A high efficiency spray dryer
By introducing air guides and fans for pre-cooling in the spray drying machine, the problems of paint film instability and surface defects caused by residual workpiece temperature are solved. This achieves efficient cooling and heating balance of the workpiece, optimizes the production process and energy consumption, and improves the overall performance of the spray drying equipment.
Patent Information
- Application Number
- CN202522043979.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-22
AI Technical Summary
Existing spray drying machines retain residual heat after the workpiece is dried, which leads to a decrease in the stability and adhesion of the paint film, and may cause surface defects or workpiece deformation. In addition, an extra drying or cooling process is required, which increases energy consumption and production complexity.
An air guide hood and a first fan are installed in the spray drying machine to pre-cool the surface of the workpiece using external air. Through the design of the air guide slope and multi-point air intake, the workpiece is simultaneously cooled and dissipated before heating and drying, combined with the dynamic balance control of the heating components.
It effectively reduces workpiece residual temperature, avoids paint film overheating, simplifies the production process, reduces energy consumption, and improves the efficiency of spraying and drying equipment and product quality.
Smart Images
Figure CN224673105U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spray coating and drying technology, specifically to a high-efficiency spray coating and drying machine. Background Technology
[0002] Existing paint drying machines typically include a conveyor belt, a heating element above the conveyor belt, and a fan. The fan drives airflow over the heating element to create hot air, which then dries the paint film on the workpiece moving along the conveyor belt. This structure enables rapid curing of the paint film during continuous conveying, improving the overall efficiency of the painting process.
[0003] However, due to the continuous hot air exposure in the drying zone, the workpieces retain a high residual temperature on their surface and inside as they exit the conveyor belt, easily leading to heat accumulation. If the workpieces directly enter subsequent processes, it will not only affect the stability and adhesion of the paint film but may also cause surface defects or even workpiece deformation. Therefore, existing equipment often requires additional drying or cooling stages to dissipate excess heat from the workpieces and ensure paint film quality. This inevitably increases production steps and energy consumption, hindering continuous and efficient processes. Utility Model Content
[0004] In order to overcome the defects of the prior art, the present invention provides a high-efficiency spray drying machine, which uses a first fan to draw in external air into the air guide hood and direct it to the surface of the workpiece on the conveyor belt, so that the workpiece can receive effective airflow before entering the heating and drying area, thereby simultaneously achieving auxiliary cooling and heat dissipation of the workpiece during the conveying and drying process.
[0005] The technical solution adopted by this utility model to solve its problem is: A high-efficiency spray drying machine includes: A frame is provided with a conveyor belt for transporting workpieces, and a heating component is provided above the conveyor belt for heating and drying the paint film on the surface of the workpieces. An air guide assembly includes an air guide shroud and a first fan disposed at the air inlet of the air guide shroud. The air guide shroud is arranged at the feed end of the conveyor belt, and the air outlet of the air guide shroud is arranged along the conveying direction of the conveyor belt. The first fan is used to draw in external air into the air guide shroud and guide it to the surface of the workpiece on the conveyor belt, so as to achieve auxiliary cooling and heat dissipation of the workpiece during the workpiece conveying process.
[0006] Furthermore, the air guide shroud is provided with a first air guide slope and a second air guide slope for guiding and changing the direction of airflow.
[0007] Furthermore, it also includes a first drive motor, which is connected to the first fan and is disposed at the air inlet of the air guide shroud. The first drive motor and the first fan are provided in multiple ways and arranged at the air inlet of the air guide shroud along the conveying direction perpendicular to the conveyor belt.
[0008] Furthermore, the air inlet ends of multiple first fans are equipped with protective nets.
[0009] Furthermore, a first side plate is provided on one side of the frame, and a second side plate is provided on the other side of the frame. A top plate is provided on the top of the first side plate and the second side plate. The first side plate, the second side plate and the top plate together form a protective cover and cover the conveying surface of the conveyor belt.
[0010] Furthermore, a second fan is provided inside the shield for driving the airflow inside the shield.
[0011] Furthermore, the heating component is disposed within the protective cover; The heating assembly includes a first set of heating elements and a second set of heating elements. The first set of heating elements is located on one side of the second fan and close to the air guide shroud, while the second set of heating elements is located on the other side of the second fan and away from the air guide shroud.
[0012] Furthermore, a second drive motor is provided on the top of the protective cover, and the output shaft of the second drive motor extends into the interior of the protective cover and is connected to the second fan drive.
[0013] Furthermore, both the first group of heating elements and the second group of heating elements are provided with multiple heating elements, which are arranged in an array at intervals along the conveying direction of the conveyor belt.
[0014] Furthermore, it also includes a controller mounted on the rack.
[0015] In summary, this utility model has the following technical effects: 1. The present invention is a high-efficiency spray drying machine. It uses a first fan to draw external air into the air guide hood and direct it to the surface of the workpiece on the conveyor belt, so that the workpiece can receive effective airflow before entering the heating and drying area, thereby achieving auxiliary cooling and heat dissipation of the workpiece simultaneously during the conveying and drying process.
[0016] 2. This utility model of a high-efficiency spray drying machine can significantly reduce the problem of residual heat buildup on workpieces after drying, effectively preventing paint film adhesion degradation, surface defects, or workpiece deformation caused by overheating. At the same time, it eliminates the need for an additional independent drying or cooling process found in traditional equipment, not only optimizing the production process and shortening the process chain, but also reducing energy consumption and space requirements, thereby improving the overall efficiency and product quality of the spray drying equipment. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the high-efficiency spray drying machine of this utility model; Figure 2 This is a schematic diagram of the heating component in the high-efficiency spray drying machine of this utility model; Figure 3 This is a schematic diagram of the air guide shroud in the high-efficiency spray drying machine of this utility model.
[0018] The meanings of the reference numerals in the attached figures are as follows: 1. Frame; 11. First side plate; 12. Second side plate; 13. Top plate; 2. Conveyor belt; 21. Third drive motor; 3. Heating assembly; 31. First set of heating elements; 32. Second set of heating elements; 4. Air guide shroud; 41. First air guide slope; 42. Second air guide slope; 5. First drive motor; 51. Protective net; 6. Second drive motor; 61. Second fan; 7. Controller. Detailed Implementation
[0019] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.
[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0022] like Figure 1-3As shown, this utility model discloses a high-efficiency spray coating dryer, including a frame 1 and an air guide assembly. The frame 1 is equipped with a conveyor belt 2 for transporting workpieces. The conveyor belt 2 is connected to a third drive motor 21. A heating assembly 3 is located above the conveyor belt 2 for rapidly heating and drying the paint film on the workpiece surface. Through this structure, uniform curing of the paint film can be achieved during continuous workpiece transport, improving overall spray coating efficiency.
[0023] The air guiding assembly includes an air guide shroud 4 and a first fan (not shown in the figure) located at the air inlet of the air guide shroud 4. The air guide shroud 4 is arranged at the feed end of the conveyor belt 2, and its air outlet is arranged along the conveying direction of the conveyor belt 2. The first fan is used to draw in external air into the air guide shroud 4 and guide it evenly to the surface of the workpiece on the conveyor belt 2 through the action of the air guide shroud 4, thereby simultaneously achieving auxiliary cooling and heat dissipation during workpiece conveying and drying. This design not only effectively reduces the residual temperature on and inside the workpiece surface, avoiding the decrease in adhesion or surface defects of the paint film due to overheating, but also improves the processing stability of subsequent processes.
[0024] See Figure 3 The air guide shroud 4 is provided with a first air guide slope 41 and a second air guide slope 42, which are used to guide and change the flow direction of the airflow, improve the flow of external air to the top of the conveyor belt 2, so that the cooling airflow is more evenly distributed, avoid the problem of insufficient local heat dissipation, and further improve the cooling uniformity of the paint film surface and the overall quality of the finished product.
[0025] It should be noted that the first guide slope 41 is arranged at the air inlet of the air guide shroud 4, and the second guide slope 42 is arranged at the air outlet of the air guide shroud 4. Through this coordinated arrangement, the first guide slope 41 can initially guide and divert the incoming air during the air intake stage, reducing turbulence. Meanwhile, the second guide slope 42 further rectifies and guides the airflow during the air outlet stage, allowing the airflow to act more concentratedly and evenly on the surface of the workpiece on the conveyor belt 2. This not only improves the utilization efficiency of the airflow but also achieves a more balanced heat dissipation effect, thereby effectively improving the curing quality and surface consistency of the workpiece's paint film.
[0026] In other embodiments, the first guide slope 41 and the second guide slope 42 can also be designed as arc-shaped structures. Through the guiding effect of the arc surfaces, the airflow path inside the air guide shroud 4 is smoother, effectively reducing eddies and energy loss, thereby improving the stability and uniformity of airflow. This allows the workpiece surface to achieve a more balanced cooling and heat dissipation effect during transport, further improving the consistency of paint film curing and surface quality.
[0027] Furthermore, it also includes a first drive motor 5, which is connected to a first fan (not shown in the figure) and is located at the air inlet of the air guide shroud 4. Multiple first drive motors 5 and first fans are arranged at the air inlet of the air guide shroud 4 along a direction perpendicular to the conveying direction of the conveyor belt 2. By using a multi-point air intake method, the air volume and air pressure can be enhanced, ensuring that workpieces of different widths can obtain sufficient cooling airflow, thereby adapting to the spraying and drying requirements of workpieces of various specifications.
[0028] Each of the first drive motors 5 is equipped with a protective net 51 at the air inlet end of the first fan. This protective net 51 effectively prevents foreign objects from entering the fan, avoiding damage caused by foreign objects being drawn in. It also prevents impurities from falling onto the conveyor belt 2 through the air guide shroud 4, thus avoiding contamination or scratches to the workpiece's paint film. This structure not only improves the safety and stability of the equipment during operation but also extends the service life of the fan and the entire machine, further ensuring the quality of paint film curing and the continuity of the production process.
[0029] Furthermore, a first side plate 11 is provided on one side of the frame 1, and a second side plate 12 is provided on the other side. A top plate 13 is provided on top of the first side plate 11 and the second side plate 12. The three together form a protective cover to cover the conveying surface of the conveyor belt 2. This protective cover structure not only serves to insulate heat and guide airflow, but also reduces heat loss and environmental interference, thereby improving the stability and energy efficiency of the heating and cooling process.
[0030] Furthermore, a second fan 61 is provided inside the protective cover to drive the circulation of air inside the cover, thereby creating a synergistic effect between hot and cold air, accelerating the curing of the paint film while achieving dynamic heat dissipation and improving the accuracy of workpiece surface temperature control.
[0031] See Figure 2 The heating component 3 is housed within the protective cover. The heating component 3 includes a first set of heating elements 31 and a second set of heating elements 32. The first set of heating elements 31 is located on one side of the second fan 61 and close to the air guide shroud 4, while the second set of heating elements 32 is located on the other side of the second fan 61 and away from the air guide shroud 4. This front-to-back distribution of the two sets of heating elements ensures a continuous and stable heat supply while cooling airflow is introduced, thereby achieving a dynamic balance between heating and cooling and preventing the paint film from becoming too dry or not dry at all.
[0032] Furthermore, a second drive motor 6 is provided on the top of the cover. The output shaft of the second drive motor 6 extends into the inside of the cover and is connected to the second fan 61 for transmission, which can stably drive air circulation, thereby ensuring the air volume and air pressure requirements under different working conditions.
[0033] Specifically, both the first group of heating elements 31 and the second group of heating elements 32 are provided with multiple heating elements. The multiple heating elements are arranged in an array at intervals along the conveying direction of the conveyor belt 2 to realize segmented heating control of the workpiece during the conveying process, so that the paint film can be gradually cured, reducing thermal shock and improving the uniformity of curing and the quality of the paint film.
[0034] In this embodiment, a controller 7 is also provided on the frame 1. The controller 7 is used to centrally control the first drive motor 5, the second drive motor 6, the heating component 3 and the conveyor belt 2. It can adjust the heating and cooling parameters in real time according to the workpiece material, coating thickness and conveying speed, thereby realizing intelligent operation and significantly improving the automation level and energy utilization efficiency of the production line.
[0035] In summary, the high-efficiency spray drying machine of this utility model utilizes a first fan to draw external air into the air guide shroud 4 and guide it directionally to the surface of the workpiece on the conveyor belt 2, so that the workpiece can receive effective airflow before entering the heating and drying area, thereby simultaneously achieving auxiliary cooling and heat dissipation of the workpiece during the conveying and drying process.
[0036] This utility model of a high-efficiency spray drying machine can significantly reduce the problem of residual heat buildup on workpieces after drying, effectively preventing paint film adhesion degradation, surface defects, or workpiece deformation caused by overheating. At the same time, it eliminates the need for an additional independent cooling or drying process found in traditional equipment, optimizing the production process, shortening the process chain, reducing energy consumption and space requirements, thereby improving the overall efficiency and product quality of the spray drying equipment.
[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.
[0038] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the module or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0039] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.
[0040] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
Claims
1. A high-efficiency spray coating dryer, characterized in that, include: A frame is provided with a conveyor belt for transporting workpieces, and a heating component is provided above the conveyor belt for heating and drying the paint film on the surface of the workpieces. An air guide assembly includes an air guide shroud and a first fan disposed at the air inlet of the air guide shroud. The air guide shroud is arranged at the feed end of the conveyor belt, and the air outlet of the air guide shroud is arranged along the conveying direction of the conveyor belt. The first fan is used to draw in external air into the air guide shroud and guide it to the surface of the workpiece on the conveyor belt, so as to achieve auxiliary cooling and heat dissipation of the workpiece during the workpiece conveying process.
2. The high-efficiency spray drying machine according to claim 1, characterized in that, The air guide shroud is provided with a first air guide slope and a second air guide slope for guiding and changing the direction of airflow.
3. The high-efficiency spray drying machine according to claim 1, characterized in that, It also includes a first drive motor, which is connected to the first fan and is located at the air inlet of the air guide shroud. The first drive motor and the first fan are provided in multiple ways and arranged at the air inlet of the air guide shroud along the conveying direction perpendicular to the conveyor belt.
4. The high-efficiency spray drying machine according to claim 3, characterized in that, Each of the first fans has a protective mesh at its air inlet.
5. The high-efficiency spray drying machine according to claim 1, characterized in that, The frame has a first side plate on one side and a second side plate on the other side. The first side plate, the second side plate and the top plate are provided with a top plate. The first side plate, the second side plate and the top plate together form a protective cover and cover the conveying surface of the conveyor belt.
6. The high-efficiency spray drying machine according to claim 5, characterized in that, The protective cover is equipped with a second fan for driving the airflow within the protective cover.
7. The high-efficiency spray drying machine according to claim 6, characterized in that, The heating component is disposed inside the protective cover; The heating assembly includes a first set of heating elements and a second set of heating elements. The first set of heating elements is located on one side of the second fan and close to the air guide shroud, while the second set of heating elements is located on the other side of the second fan and away from the air guide shroud.
8. The high-efficiency spray drying machine according to claim 7, characterized in that, The top of the protective cover is also provided with a second drive motor, the output shaft of which extends into the interior of the protective cover and is connected to the second fan drive.
9. The high-efficiency spray drying machine according to claim 8, characterized in that, Both the first group of heating elements and the second group of heating elements are provided with multiple heating elements, which are arranged in an array at intervals along the conveying direction of the conveyor belt.
10. The high-efficiency spray drying machine according to claim 1, characterized in that, It also includes a controller mounted on the rack.