Partitioned hot air and adjustable ultraviolet collaborative drying equipment

Abstract

The utility model provides partition hot air and adjustable ultraviolet collaborative drying equipment, and relates to the technical field of industrial drying equipment, the partition hot air and adjustable ultraviolet collaborative drying equipment comprises a material conveying track, and a material pretreatment unit, a drying chamber and a waste gas treatment unit which are sequentially arranged along the material conveying track. The drying chamber is provided with an upper-layer ultraviolet irradiation area and a lower-layer hot air circulation channel in a layered manner; the upper ultraviolet irradiation area is provided with a modularized ultraviolet generation unit comprising a plurality of ultraviolet LED arrays with different central wavelengths and a wavelength selection driving module; the lower-layer hot air circulation channel is provided with a hot air circulation air outlet which is provided with a partition flow guide module and blows out hot air at a preset inclination angle. The material pretreatment unit is used for cleaning and preheating materials entering the drying cavity, obtaining clean gas from the waste gas treatment unit, and heating the clean gas for preheating the materials. Efficient drying of the materials is achieved, and the drying quality and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of industrial drying equipment technology, and in particular to a zoned hot air and adjustable ultraviolet light synergistic drying equipment. Background Technology

[0002] In modern industrial production, such as printing, coating, and electronic packaging, the rapid, uniform, and high-quality drying or curing of inks, coatings, and adhesives on material surfaces is a crucial process. Traditional drying methods, such as simple hot air drying, suffer from slow drying speed, high energy consumption, and incompatibility with heat-sensitive materials.

[0003] To overcome the limitations of single drying methods, ultraviolet (UV) and hot air combined drying technology has emerged. However, existing combined drying equipment still has some shortcomings. Traditional UV mercury lamps have fixed wavelengths, making it difficult to accurately match the optimal absorption wavelengths of different photosensitive materials, affecting curing efficiency and depth. Traditional hot air systems often use overall air supply, making it difficult to differentiate and adjust according to the drying needs of different areas of the material, resulting in insufficient local drying and affecting product quality. The lack of physical surface treatment means that the surface condition of the material affects the drying effect. The cleanliness of the material surface (such as dust and electrostatic adsorption) directly affects the adhesion of the coating and the final drying effect. For materials of different sizes, shapes, or drying characteristics, the equipment often lacks the ability to flexibly adjust the irradiation angle, distance, and hot air distribution.

[0004] Therefore, it is necessary to improve existing drying equipment technology to overcome its shortcomings. Utility Model Content

[0005] To overcome the problems existing in related technologies, the purpose of this utility model is to provide a zoned hot air and adjustable ultraviolet light synergistic drying device to solve the problems of poor adaptability of ultraviolet light source, imprecise hot air control, and lack of material pretreatment in the prior art.

[0006] A zoned hot air and adjustable ultraviolet light synergistic drying device includes:

[0007] The material conveying track and the material pretreatment unit, drying chamber and waste gas treatment unit arranged sequentially along the material conveying direction;

[0008] The drying chamber includes an upper ultraviolet irradiation area and a lower hot air circulation channel arranged in layers along the vertical direction.

[0009] The upper ultraviolet irradiation area is provided with at least one detachably connected modular ultraviolet generating unit. The modular ultraviolet generating unit includes an ultraviolet LED array composed of ultraviolet LED particles or ultraviolet LED modules with various center wavelengths, and a wavelength selection driving module for selectively driving ultraviolet LED particles or ultraviolet LED modules with specific wavelengths or specific wavelength combinations in the ultraviolet LED array.

[0010] The lower hot air circulation channel is provided with a hot air circulation outlet connected to an external hot air circulation system. The hot air circulation system generates hot air and sends it to the hot air circulation outlet. The hot air circulation outlet is set at a preset tilt angle to blow the hot air toward the material to be dried on the material conveying track. A zoned flow guiding module is provided at the hot air circulation outlet to adjust the hot air blowing angle of different areas.

[0011] The upper ultraviolet irradiation area covers the lower hot air circulation channel;

[0012] The material pretreatment unit is located at the inlet end of the drying chamber and is used to clean and preheat the material to be dried. The exhaust gas treatment unit is located at the outlet end of the drying chamber and is used to purify the gas discharged from the drying chamber and output clean gas. The material pretreatment unit includes a preheating chamber and a preheating pipe. The preheating chamber is connected to the exhaust gas treatment unit through the preheating pipe and is used to obtain and heat the clean gas.

[0013] The upper ultraviolet irradiation area is located above the lower hot air circulation channel, and the two form a stacked drying area above the material conveying track.

[0014] Furthermore, the modular ultraviolet generating unit also includes a heat dissipation structure for dissipating heat from the ultraviolet LED array. The heat dissipation structure includes a heat dissipation base that is closely fitted to the ultraviolet LED array, an array of heat dissipation fins fixed on the heat dissipation base, and a heat dissipation fan for generating airflow.

[0015] Furthermore, the modular ultraviolet generating unit also includes a support structure for manually adjusting the irradiation angle and irradiation distance of the ultraviolet LED array, the support structure comprising:

[0016] A rotating adjustment arm is provided, on which the ultraviolet LED array is mounted or connected. The rotating adjustment arm is used to drive the ultraviolet LED array to rotate in order to adjust its irradiation angle. The adjustment range of the irradiation angle is ±30°.

[0017] A pair of guide rails, both of which are arranged in a vertical direction;

[0018] A sliding adjustment base is provided, on which the rotating adjustment arm is mounted. The two ends of the sliding adjustment base are slidably connected to the guide rail. The sliding adjustment base is disposed on the guide rail and can slide along the guide rail to adjust the irradiation distance.

[0019] Furthermore, each end of the sliding adjustment seat is provided with a slider that slides in cooperation with the pair of guide rails. The sliding adjustment seat is provided with a manual locking mechanism, which is a lever-type locking handle. The manual locking mechanism is used to lock the sliding adjustment seat at any vertical position on the guide rail under manual operation.

[0020] One end of the rotating adjustment arm is fixedly connected to one side of the ultraviolet LED array, and the other end extends out of the sliding adjustment seat. The other side of the ultraviolet LED array is pivotally connected to the sliding adjustment seat via a rotating shaft, and the axis of the rotating shaft is parallel to the material conveying direction.

[0021] The rotary adjusting arm includes a screw body and a manually rotating nut for locking itself relative to the sliding adjusting seat. The manually rotating nut includes a nut body and a knob sleeved on the nut body.

[0022] Furthermore, the hot air circulation outlet is a strip-shaped slit-type outlet array extending along the width direction of the material conveying track.

[0023] Furthermore, the preset tilt angle of the hot air circulation outlet is 45 degrees relative to the horizontal plane of the material conveying track.

[0024] Furthermore, the partitioned airflow guiding module includes multiple sets of airflow guiding blades spaced apart along the length of the air outlet. Each set of airflow guiding blades can rotate independently around its own axis of rotation, which is connected to an external manual adjustment lever or knob.

[0025] Furthermore, the material pretreatment unit further includes at least one of the following:

[0026] The static eliminator is an ion bar or an ion curtain.

[0027] A brush cleaning assembly includes a pair of antistatic soft brushes positioned vertically opposite each other, a dust collection hood and a dust suction port that cooperate with the soft brushes, the antistatic soft brushes being arranged along the width direction of the material conveying track, and the antistatic soft brushes being driven to rotate by a motor.

[0028] An air knife cleaning assembly includes a high-pressure air knife, which includes a flat nozzle and a compressed air source. The flat nozzle is arranged along the width direction of the material conveying track, and the compressed air source is connected to the flat nozzle.

[0029] Furthermore, the waste gas treatment unit includes a condenser and an adsorption purification box connected in sequence. The inlet end of the condenser is connected to the exhaust port of the drying chamber, the outlet end of the condenser is connected to the inlet end of the adsorption purification box, and the outlet end of the adsorption purification box is connected to the preheating pipe.

[0030] The condenser is a shell-and-tube heat exchanger or a plate heat exchanger, used to reduce the temperature of the gas discharged from the drying chamber. The bottom of the condenser is provided with a liquid collection tank to collect the condensed liquid dripping from the condenser.

[0031] The adsorption purification box includes a box body and a drawer-type activated carbon filter plate disposed inside the box body. The drawer-type activated carbon filter plate is filled with granular or honeycomb activated carbon. The box body is provided with parallel rails for guiding the insertion and removal of the drawer-type activated carbon filter plate. One side of the box body is provided with an openable and sealable door panel for loading and unloading the drawer-type activated carbon filter plate.

[0032] Furthermore, a heating assembly is provided inside the preheating pipe, the heating assembly including an electric heating tube or an electric heating wire, and the heating assembly is fixed inside the preheating pipe by an insulating bracket.

[0033] The beneficial effects of this utility model are as follows:

[0034] This invention provides a zoned hot air and adjustable ultraviolet (UV) co-drying device. By integrating and streamlining the material pretreatment unit, the co-drying chamber containing an adjustable wavelength UV LED array and zoned hot air flow, and the exhaust gas treatment unit, it achieves full-process optimization and efficient synergy. Material pretreatment ensures that the material entering the drying chamber has a good initial state. The synergistic adjustability of UV light and hot air parameters within the drying chamber allows for precise control of the equipment to achieve optimal drying results for different materials and process requirements. The clean gas output from the exhaust gas treatment is utilized by the preheating chamber. This improves drying quality and efficiency. The wavelength of the modular UV generator can be selectively matched to the material, while the zoned adjustable hot air provides more uniform and targeted assistance for solvent evaporation and curing reactions. The detachable modular UV unit and adjustable UV and hot air parameters enable it to adapt to a wide range of material types and process requirements. Attached Figure Description

[0035] Figure 1 This is a system connection diagram of the zoned hot air and adjustable ultraviolet co-drying equipment provided in this application;

[0036] Figure 2 This is a schematic diagram of the drying chamber provided in this application;

[0037] Figure 3This is a schematic diagram of the modular ultraviolet generating unit provided in this application.

[0038] Figure label:

[0039] 100. Material conveying track;

[0040] 200. Material pretreatment unit; 210. Preheating chamber; 211. Brush cleaning assembly; 212. Air knife cleaning assembly; 220. Preheating pipe; 221. Heating assembly;

[0041] 300. Drying chamber;

[0042] 400. Waste gas treatment unit; 410. Condenser; 420. Adsorption purification box; 421. Drawer-type activated carbon filter plate; 430. Liquid collection tank;

[0043] 500. Modular UV generating unit; 510. UV LED array; 511. Heat dissipation base; 512. Heat dissipation fin array; 513. Cooling fan; 520. Rotary adjustment arm; 521. Manually rotated nut; 530. Guide rail; 540. Sliding adjustment seat; 541. Manual locking mechanism;

[0044] 600; Hot air circulation outlet. Detailed Implementation

[0045] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0046] Reference Figures 1 to 3 This utility model provides a zoned hot air and adjustable ultraviolet co-drying device, which aims to solve the problems of poor adaptability of ultraviolet light source, imprecise hot air control, lack of material pretreatment, and low efficiency of waste gas treatment and energy recovery in the existing technology. Through integrated and process-oriented design, it improves drying quality and efficiency, and enhances the adaptability and environmental performance of the equipment.

[0047] In one specific embodiment, the present invention provides a zoned hot air and adjustable ultraviolet co-drying device, the core structure of which includes a material conveying track 100, a material pretreatment unit 200, a drying chamber 300 and an exhaust gas treatment unit 400 arranged sequentially along the material conveying direction.

[0048] The material conveying track 100 is used to carry the material to be dried and sequentially convey it through each processing unit. The material conveying track 100 can be selected according to the characteristics of the material, such as mesh belt, chain plate, or roller conveyor belt, to ensure that the material passes through the equipment smoothly and continuously.

[0049] The material pretreatment unit 200 is located at the feed end of the drying chamber 300. Its main function is to clean and preheat the material to be dried.

[0050] Cleaning is performed to remove dust, impurities, static electricity, etc., from the material surface to ensure the quality of subsequent drying and curing processes and prevent reduced coating adhesion or surface defects caused by contaminants. Specific cleaning equipment may include:

[0051] An antistatic device, such as at least one ion bar or ion curtain, is installed above or on both sides of the material conveying track 100 to generate positive and negative ions to neutralize the static electricity on the material surface and prevent static electricity from attracting dust.

[0052] The brush cleaning assembly 211 may include a pair of anti-static soft brushes positioned vertically opposite each other, arranged along the width of the material conveying track 100. These soft brushes are driven by a motor to rotate in opposite directions, brushing away adhering substances from the material surface. With the aid of a dust collection hood and a suction port, the brushed dust can be collected promptly, preventing secondary contamination.

[0053] The air knife cleaning assembly 212 includes a high-pressure air knife with a flat nozzle arranged along the width of the material conveying track 100 and connected to a compressed air source. The high-pressure airflow can effectively blow away loose particles from the surface of the material.

[0054] The above-mentioned cleaning devices can be used individually or in combination, depending on the cleanliness requirements and characteristics of the materials.

[0055] Preheating is used to ensure the material reaches a certain temperature before entering the drying chamber 300. This helps improve drying efficiency, reduces temperature differences within the drying chamber 300, and makes the drying process more uniform. The material pretreatment unit 200 includes a preheating chamber 210 and a preheating pipe 220. Crucially, the preheating chamber 210 is connected to the subsequent waste gas treatment unit 400 via the preheating pipe 220, using the clean gas output from the purified waste gas treatment unit 400 to preheat the incoming material. To further precisely control the preheating temperature, a heating component 221, such as an electric heating tube or electric heating wire, can also be installed inside the preheating pipe 220. This component is fixed inside the preheating pipe 220 by an insulating bracket to supplement the heating of the recovered clean gas, ensuring effective preheating.

[0056] The drying chamber 300 is the core component of this equipment, comprising an upper ultraviolet irradiation area and a lower hot air circulation channel arranged in layers along the vertical direction. This layered design allows ultraviolet irradiation and hot air drying to act on the material simultaneously, achieving a synergistic drying effect. The upper ultraviolet irradiation area covers the lower hot air circulation channel, ensuring that the material receives both treatments within the same area.

[0057] Within the upper ultraviolet irradiation area, at least one detachably connected modular ultraviolet generating unit 500 is provided. The modular design allows for flexible adjustment of the number of ultraviolet units based on drying requirements (such as material width and required light power), while also facilitating the maintenance and replacement of individual modules. Each modular ultraviolet generating unit 500 includes:

[0058] The ultraviolet LED array 510 is composed of various ultraviolet LED particles or ultraviolet LED modules with different center wavelengths. For example, it can include LEDs with different wavelengths such as 365nm, 385nm, 395nm, and 405nm to adapt to the optimal absorption spectrum of different photoinitiators or photosensitive resins.

[0059] The wavelength selection drive module is used to selectively drive UV LED particles or UV LED modules of a specific wavelength or a specific combination of wavelengths in the UV LED array 510. With this module, operators can select the most suitable UV wavelength or wavelength combination according to the characteristics of the material to be dried (such as coating type and thickness), thereby significantly improving curing efficiency, reducing energy waste, and improving curing depth and surface effect.

[0060] A wavelength selection drive module may specifically include multiple selection switch groups, a power interface, and a drive circuit.

[0061] If the ultraviolet LED array (510) contains three LEDs with different center wavelengths (e.g., 365nm, 385nm, 395nm), at least three sets of corresponding selection switches can be set. Each set of switches controls the on / off state of an ultraviolet LED chip or module of a specific wavelength.

[0062] Each selector switch is connected to a corresponding drive circuit, which is responsible for providing the appropriate drive current and voltage to the corresponding wavelength of the ultraviolet LED chip or module.

[0063] The power interface is used to connect an external power source to power the entire wavelength selection driver module and the ultraviolet LED array.

[0064] In a preferred embodiment, ultraviolet LED particles or modules with different center wavelengths are arranged in groups in the ultraviolet LED array. The first group consists of LEDs with a wavelength of 365nm, the second group consists of LEDs with a wavelength of 385nm, and the third group consists of LEDs with a wavelength of 395nm. The wavelength selection driving module is correspondingly equipped with a first selection switch, a second selection switch, and a third selection switch.

[0065] Operators can independently operate these selector switches to selectively turn on or off the corresponding wavelength of ultraviolet LED arrays. For example:

[0066] When only the first selection switch is closed, only the 365nm wavelength ultraviolet LED emits light;

[0067] When the first and second selection switches are closed simultaneously, the 365nm and 385nm wavelength ultraviolet LEDs emit light at the same time, achieving wavelength combination.

[0068] When all switches are off, the UV LED array will not emit light.

[0069] These selector switches can be easy-to-operate types such as physical push-button switches, toggle switches, or rotary switches. They can be installed on the equipment's control panel or in an appropriate location on the modular UV generator unit, allowing users to manually select the required single UV wavelength or combination of multiple UV wavelengths according to the photosensitive characteristics of the material to be dried and the process requirements. This enables efficient curing of different materials and optimizes energy use.

[0070] Those skilled in the art will understand that the specific design of the drive circuit, such as constant current drive and voltage control, falls within the scope of conventional electrical design and will not be elaborated upon here.

[0071] Since high-power ultraviolet LEDs generate a large amount of heat during operation, the modular ultraviolet generating unit 500 also includes a heat dissipation structure to ensure stable operation and service life. This heat dissipation structure preferably includes a heat dissipation base 511 (such as a copper or aluminum substrate with good thermal conductivity) that is closely attached to the ultraviolet LED array 510, a heat dissipation fin array 512 (to increase the heat dissipation area) fixed on the heat dissipation base 511, and a cooling fan 513 for generating forced convection airflow.

[0072] To accommodate materials of different sizes, shapes, or drying characteristics, the modular UV generating unit 500 also includes a support structure for manually (or electrically, as in other embodiments) adjusting the irradiation angle and irradiation distance of the UV LED array 510. This support structure may include:

[0073] A rotating adjustment arm 520 is mounted on which an ultraviolet LED array 510 is installed. It can rotate around a certain axis to adjust the irradiation angle.

[0074] A pair of vertically aligned guide rails 530;

[0075] The sliding adjustment base 540 and the rotating adjustment arm 520 are mounted on the sliding adjustment base 540. The sliding adjustment base 540 can slide on the guide rail 530 to adjust the irradiation distance (i.e., the distance between the ultraviolet lamp and the material surface).

[0076] Furthermore, the sliding adjustment base 540 may have sliders at both ends that slide in cooperation with the guide rail 530, and a manual locking mechanism 541 (such as a lever-type locking handle) to facilitate quick locking by the operator after adjusting to a suitable height. One end of the rotating adjustment arm 520 is fixedly connected to one side of the ultraviolet LED array 510, and the other end extends out of the sliding adjustment base 540. The other side of the ultraviolet LED array 510 is pivotally connected to the sliding adjustment base 540. The rotating adjustment arm 520 includes a screw body and a manually rotating nut 521 for locking itself relative to the sliding adjustment base 540 (the manually rotating nut 521 may include a nut body and a knob sleeved on the nut body). By operating the manually rotating nut 521, the rotating adjustment arm 520 can be fixed at the desired angle. This design makes the adjustment of the irradiation angle and distance flexible, precise, and easy to fix.

[0077] Within the lower-level hot air circulation channel, a hot air circulation outlet 600 is provided, which connects to an external hot air circulation system. The hot air circulation system employs existing technology (typically including heaters, fans, and ducts) to generate hot air at the required temperature and volume for the process, and then delivers it to the hot air circulation outlet 600.

[0078] The hot air circulation outlet 600 is set at a preset tilt angle of 45 degrees relative to the horizontal plane of the material conveying track 100. This tilted airflow design, compared to vertical or horizontal airflow, can more effectively penetrate the material (especially for porous materials with a certain thickness) or form a stronger turbulent airflow on the material surface, thereby accelerating solvent evaporation and heat transfer, and improving the drying rate.

[0079] The specific form of the air outlet can be a strip-shaped slotted air outlet array extending along the width of the material conveying track by 100. Strip-shaped slotted air outlets are suitable for the uniform drying of wide-area materials.

[0080] A zoned airflow guiding module is installed at the hot air circulation outlet 600. This module is used to adjust the hot air blowing angle or flow rate in different areas. The zoned airflow guiding module includes multiple sets of guide vanes spaced along the length of the outlet. Each set of guide vanes can rotate independently around its own axis, which is connected to an external manual adjustment lever or knob. The operator can independently adjust the angle of each set of guide vanes according to the drying requirements of different areas of the material (e.g., the drying speed is different between the edge and center of the material), thereby achieving precise control of the hot air distribution, ensuring uniform drying of all parts of the material, and avoiding local over-drying or under-drying.

[0081] More specifically, multiple sets of guide vanes mean that the entire width of the air outlet is divided into several independent control zones. Each zone has one set or one guide vane. A wide air outlet can be divided into 3 to 5 or more zones, each zone corresponding to one set (or one) of independently adjustable guide vanes.

[0082] Each guide vane is typically made of a high-temperature resistant and corrosion-resistant metal material (such as stainless steel or aluminum alloy), possessing sufficient rigidity and structural stability to maintain the set angle under the impact of hot airflow. The vanes can be simple flat plates or designed as airfoils with a certain curvature to guide airflow more effectively, with the vanes spaced 20-50cm apart.

[0083] Each set (or each individual) of guide vanes is fixed or connected to an independent rotating shaft. This shaft is positioned parallel to the width of the air outlet along the length of the vanes and is pivotally connected to the outlet frame structure, allowing the vanes to rotate around this shaft. One end of the shaft extends to the outside of the hot air circulation channel and is connected via a linkage mechanism to an easily operable manual adjustment lever or knob located outside the drying chamber. Operators can independently and manually fine-tune the hot air blowing angle of each area from outside the equipment.

[0084] The guide vanes, based on the pre-set 45-degree angle at the hot air circulation outlet, further guide the hot air a second time. Operators can independently adjust the deflection angle of each set of guide vanes according to the characteristics, width, or drying needs of different areas of the material to be dried (e.g., the edges of the material may dry more easily than the center or require different intensities of hot air). The vanes in some areas can be adjusted to direct the hot air more vertically towards the material (i.e., reducing the angle with the horizontal plane, approaching vertical downwards) to enhance the drying intensity in that area; or the vanes in other areas can be adjusted to direct the hot air at a larger sweeping angle (i.e., increasing the angle with the horizontal plane, approaching 45 degrees or greater) towards the material surface to achieve gentler drying or promote rapid solvent evaporation in specific areas.

[0085] The exhaust gas treatment unit 400 is located at the discharge end of the drying chamber 300 and is used to purify the gas discharged from the drying chamber 300 that contains volatile organic compounds (VOCs), solvent vapors, or solidification reaction byproducts, and output clean gas after treatment. As mentioned above, a portion of the clean gas is guided to the preheating chamber 210 of the material pretreatment unit 200 for heat recovery.

[0086] In a preferred embodiment, the exhaust gas treatment unit 400 includes a condenser 410 and an adsorption purification box 420 connected in sequence.

[0087] The inlet of condenser 410 is connected to the exhaust port of drying chamber 300. It can be a shell-and-tube heat exchanger or a plate heat exchanger, etc., which uses a cooling medium (such as cooling water, a thermoelectric cooler, etc.) to lower the temperature of the high-temperature exhaust gas, causing the high-boiling-point solvent vapor to condense into liquid. A collection tank 430 is provided at the bottom of condenser 410 to collect and receive the condensate, which can be subsequently recycled or treated. Condensation effectively removes most of the solvent, reducing the load on subsequent adsorption units and extending the service life of the adsorption material. It also ensures that the humidity of the gas flowing into the preheating unit remains low, preventing the high-temperature preheated gas in preheating chamber 210 from contacting the lower-temperature material and producing condensate.

[0088] The outlet of the condenser 410 is connected to the inlet of the adsorption purification box 420. The adsorption purification box 420 contains a drawer-type activated carbon filter plate 421, filled with highly efficient adsorption materials such as granular or honeycomb activated carbon, used to adsorb residual organic pollutants in the waste gas. The drawer-type design, combined with parallel tracks inside the box to guide the insertion and removal of the filter plate, and an openable and sealable door on one side of the box, makes the replacement and maintenance of the activated carbon filter plate very convenient and quick. The outlet of the adsorption purification box 420 outputs purified clean gas, a portion of which is connected to the preheating pipe 220 of the material pretreatment unit 200.

[0089] Workflow and Benefits:

[0090] During operation, the material to be dried first enters the material pretreatment unit 200 via the material conveyor track 100 for surface cleaning (static electricity removal and dust removal) and preliminary preheating using recycled clean air. Subsequently, the pretreated material enters the drying chamber 300. Inside the drying chamber 300, the modular ultraviolet (UV) generator 500 above irradiates the material with UV light according to preset wavelengths and intensities, promoting photocuring or surface sterilization; simultaneously, the hot air circulation channel below blows inclined hot air onto the material through a zoned flow guide module, accelerating solvent evaporation and overall drying. The synergistic effect of UV light and hot air significantly improves drying and curing efficiency. The exhaust gas containing organic solvents discharged from the drying chamber 300 enters the exhaust gas treatment unit 400, where most of the solvent is condensed and recovered by the condenser 410, and then the remaining pollutants are adsorbed by activated carbon in the adsorption purification box 420. The purified clean gas is then transported back to the preheating chamber 210 of the material pretreatment unit 200 to preheat new materials entering the chamber.

[0091] This invention ensures that the material entering the drying chamber 300 has a good initial state through material pretreatment. Inside the drying chamber 300, an adjustable wavelength ultraviolet LED array 510 can precisely match the photosensitive characteristics of different materials, achieving efficient and deep curing. The zoned, adjustable tilting hot air more evenly and specifically assists solvent evaporation and the curing reaction, avoiding problems common in traditional drying methods such as uneven drying, surface crusting, or incomplete internal drying. The modular ultraviolet generating unit 500's wavelength selectivity, adjustable irradiation angle and distance, and the fine adjustment capability of the hot air zone guiding module enable this equipment to flexibly adapt to various types, sizes, shapes, and drying characteristics of materials and process requirements. The detachable modular ultraviolet unit also facilitates rapid configuration adjustments according to production needs. "The clean gas output from the exhaust gas treatment unit 400 is recovered and heated for material preheating. The condenser 410 reduces activated carbon consumption. The modular UV unit and drawer-type activated carbon filter plate design make equipment maintenance and consumable replacement more convenient. By integrating material pretreatment, co-drying, exhaust gas treatment, and energy recovery into a continuous process, with each unit having a clear function and cooperating with each other, the entire drying process is optimized, improving overall production efficiency and economic benefits."

[0092] In other embodiments, the angle and distance adjustment mechanisms in the support structure of the modular ultraviolet generating unit 500, as well as the adjustment of the guide vanes in the partitioned flow guiding module, can be designed to be electrically adjusted in addition to manual operation, and integrated into the central control system of the equipment (e.g., PLC with touch screen), thereby realizing automated and programmed adjustment, further improving the ease of operation and process repeatability.

[0093] In addition, sensors for temperature, humidity, and gas concentration can be installed in the drying chamber 300 or at key nodes of the exhaust gas treatment unit 400 to achieve real-time monitoring and feedback control of the drying process and exhaust gas treatment effect, making the equipment operation more intelligent.

[0094] The cleaning components in the material pretreatment unit 200 can be equipped with more advanced cleaning methods such as ultrasonic cleaning and plasma cleaning, depending on actual needs.

[0095] In the waste gas treatment unit 400, in addition to activated carbon adsorption, other purification technologies or combinations thereof, such as catalytic combustion (RCO / CO) and photocatalytic oxidation, can be used depending on the composition of the waste gas.

[0096] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application. Any specific values ​​in all examples shown and discussed herein should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0097] Furthermore, it should be noted that the use of terms such as "first" and "second" is merely for ease of distinction, and unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0098] 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. A zoned hot air and adjustable ultraviolet light synergistic drying device, characterized in that, include: The material conveying track (100) and the material pretreatment unit (200), drying chamber (300) and waste gas treatment unit (400) arranged sequentially along the material conveying direction; The drying chamber (300) includes an upper ultraviolet irradiation area and a lower hot air circulation channel arranged in layers along the vertical direction; The upper ultraviolet irradiation area is provided with at least one detachably connected modular ultraviolet generating unit (500). The modular ultraviolet generating unit (500) includes an ultraviolet LED array (510) composed of ultraviolet LED particles or ultraviolet LED modules with various center wavelengths, and a wavelength selection driving module for selectively driving a specific wavelength or a specific combination of wavelengths in the ultraviolet LED array (510). The lower hot air circulation channel is provided with a hot air circulation outlet (600) connected to an external hot air circulation system. The hot air circulation system is used to generate hot air and send it to the hot air circulation outlet (600). The hot air circulation outlet (600) is set at a preset tilt angle to blow hot air toward the material to be dried on the material conveying track (100). The hot air circulation outlet (600) is provided with a zoned flow guiding module, which is used to adjust the hot air blowing angle of different areas. The material pretreatment unit (200) is located at the inlet end of the drying chamber (300) and is used to clean and preheat the material to be dried. The exhaust gas treatment unit (400) is located at the outlet end of the drying chamber (300) and is used to purify the gas discharged from the drying chamber (300) and output clean gas. The material pretreatment unit (200) includes a preheating chamber (210) and a preheating pipe (220). The preheating chamber (210) is connected to the exhaust gas treatment unit (400) through the preheating pipe (220) and is used to obtain and heat the clean gas.

2. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 1, characterized in that: The modular ultraviolet generating unit (500) further includes a heat dissipation structure for dissipating heat from the ultraviolet LED array (510). The heat dissipation structure includes a heat dissipation base (511) that is in close contact with the ultraviolet LED array (510), a heat dissipation fin array (512) fixed on the heat dissipation base (511), and a heat dissipation fan (513) for generating airflow.

3. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 1, characterized in that: The modular ultraviolet generating unit (500) also includes a support structure for manually adjusting the irradiation angle and irradiation distance of the ultraviolet LED array (510), the support structure comprising: A rotating adjustment arm (520) is provided, on which the ultraviolet LED array (510) is mounted or connected to the rotating adjustment arm (520). The rotating adjustment arm (520) is used to drive the ultraviolet LED array (510) to rotate in order to adjust its irradiation angle. The adjustment range of the irradiation angle is ±30°. A pair of guide rails (530), both of which are arranged in a vertical direction; A sliding adjustment seat (540) is provided, and the rotating adjustment arm (520) is mounted on the sliding adjustment seat (540). The two ends of the sliding adjustment seat (540) are slidably connected to the guide rail (530). The sliding adjustment seat (540) is disposed on the guide rail (530) and can slide along the guide rail (530) to adjust the irradiation distance.

4. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 3, characterized in that: The sliding adjustment seat (540) has sliders at both ends that slide in cooperation with the pair of guide rails (530). The sliding adjustment seat (540) is provided with a manual locking mechanism (541), which is a lever-type locking handle. The manual locking mechanism (541) is used to lock the sliding adjustment seat (540) at any vertical position on the guide rails (530) under manual operation. One end of the rotating adjustment arm (520) is fixedly connected to one side of the ultraviolet LED array (510), and the other end extends out of the sliding adjustment seat (540). The other side of the ultraviolet LED array (510) is pivotally connected to the sliding adjustment seat (540) through a rotating shaft. The axis of the rotating shaft is parallel to the material conveying direction. The rotary adjustment arm (520) includes a screw body and a manually operated nut (521) for locking itself relative to the sliding adjustment seat (540). The manually operated nut (521) includes a nut body and a knob sleeved on the nut body.

5. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 1, characterized in that: The hot air circulation outlet (600) is a strip-shaped slot-type outlet array extending along the width direction of the material conveying track (100).

6. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 1, characterized in that: The preset tilt angle of the hot air circulation outlet (600) is 45 degrees relative to the horizontal plane of the material conveying track (100).

7. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 1, characterized in that: The partitioned airflow guiding module includes multiple sets of airflow guiding blades spaced apart along the length of the air outlet. Each set of airflow guiding blades can rotate independently around its own axis, which is connected to an external manual adjustment lever or knob.

8. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 1, characterized in that: The material pretreatment unit (200) further includes at least one of the following: The static eliminator is an ion bar or an ion curtain. The brush cleaning assembly (211) includes a pair of antistatic soft brushes facing each other, a dust collection cover and a dust suction port that cooperate with the soft brushes. The antistatic soft brushes are arranged along the width direction of the material conveying track (100) and are driven to rotate by a motor. An air knife cleaning assembly (212) includes a high-pressure air knife, which includes a flat nozzle and a compressed air source. The flat nozzle is arranged along the width direction of the material conveying track (100), and the compressed air source is connected to the flat nozzle.

9. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 1, characterized in that: The waste gas treatment unit (400) includes a condenser (410) and an adsorption purification box (420) connected in sequence. The inlet end of the condenser (410) is connected to the exhaust port of the drying chamber (300), the outlet end of the condenser (410) is connected to the inlet end of the adsorption purification box (420), and the outlet end of the adsorption purification box (420) is connected to the preheating pipe (220). The condenser (410) is used to reduce the temperature of the gas discharged from the drying chamber (300). The bottom of the condenser (410) is provided with a liquid collection tank (430) for receiving the condensed liquid dripping from the condenser (410). The adsorption purification box (420) includes a box body and a drawer-type activated carbon filter plate (421) disposed inside the box body. The drawer-type activated carbon filter plate (421) is filled with granular or honeycomb activated carbon. The box body is provided with parallel rails for guiding the drawer-type activated carbon filter plate (421) to be inserted and removed. One side of the box body is provided with an openable and sealable door for loading and unloading the drawer-type activated carbon filter plate (421).

10. The zoned hot air and adjustable ultraviolet co-drying equipment according to claim 1, characterized in that: The preheating pipe (220) is provided with a heating component (221), which includes an electric heating tube or an electric heating wire. The heating component (221) is fixed inside the preheating pipe (220) by an insulating bracket.

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