Electric heating type drying equipment for digital printing
By incorporating hot air preheating and gas purification design into the electric heating drying equipment, the problems of fabric deformation and odor during the drying process are solved, achieving efficient and safe fabric drying results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-03
AI Technical Summary
During the fabric drying process, existing digital printing equipment causes fabric deformation and uneven coloring due to differences in low and high temperatures, and also produces odorous and harmful gases, affecting product quality and environmental safety.
The equipment uses electric heating drying equipment, which generates hot air to preheat the fabric. It also uses gas purification equipment to treat harmful gases, and improves heat transfer efficiency through inclined conveyor roller design. Dust is filtered out using a filter screen, and the fabric is cooled by natural wind.
It achieves uniform drying of fabrics, reduces deformation and color changes, ensures product quality, purifies gases for harmless discharge, and improves production safety.
Smart Images
Figure CN224075310U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fabric printing technology, and in particular to an electric heating drying device for digital printing. Background Technology
[0002] Digital printing technology, as an advanced printing method, has been widely used in the field of fabric printing. During the digital printing process, after the fabric is sprayed with ink by the digital printer, it needs to be dried. The main purpose of drying is to fix the printed colors, prevent color bleeding or bleed-through, and improve the print's abrasion resistance and washability. Through drying, the moisture or other solvents in the ink evaporate, allowing the colors to adhere more firmly to the material, thereby extending the product's lifespan.
[0003] In the actual use of printed fabric drying equipment, the fabric is transported to the drying zone by conveyor rollers and heated to remove moisture. However, when the fabric is suddenly exposed to high temperature at low temperature, thermal stress is easily generated, causing the fibers to shrink rapidly and internal tension to increase. This may cause the fabric to deform, have uneven color, or change color. These adverse effects will be reflected in the printing effect, resulting in pattern distortion or color deviation, affecting the quality and aesthetics of the fabric, leading to poor drying effect of the equipment, failing to meet the needs of high-quality production, and possibly generating odors or harmful gases, which may affect the environment and the health of workers. Utility Model Content
[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that the fabric cannot be preheated before drying, and the fabric generates odorous and harmful gases when heated. To this end, we propose an electric heating drying device for digital printing.
[0005] To achieve the above objectives, this application adopts the following technical solution: an electric heating drying device for digital printing, comprising a digital printing machine body, an electric heating drying device body installed on one side of the digital printing machine body, three conveying rollers installed at the bottom of the electric heating drying device body, fabric being disposed on the surface of the conveying rollers, a frame plate fixedly connected to one side of the electric heating drying device body, fans installed at both ends of the frame plate, a lower guide plate fixedly connected to one side of the electric heating drying device body, an upper guide plate rotatably connected to the top of one side of the electric heating drying device body via a hinge, a conduit fixedly connected to the top of the upper guide plate, a gas purification device installed at the other end of the conduit, and the gas purification device fixedly connected to the top of the electric heating drying device body.
[0006] Preferably, grooves are provided at both ends of the top of the frame plate, and a filter screen is inserted into the inner wall of the groove. The filter screen is placed at the output end of the fan.
[0007] Preferably, a collection box is fixedly connected to the bottom of the filter screen.
[0008] Preferably, baffles are fixedly connected to both sides of the bottom of the upper guide plate, and one side of the baffle abuts against the outer side of the lower guide plate.
[0009] Preferably, ventilation openings are provided on both sides of the digital printing machine body, and fans are installed inside the ventilation openings, with the airflow direction of the two fans being the same.
[0010] Preferably, the three conveying rollers are arranged in a triangular structure, with the top two conveying rollers installed at an angle, higher on the left and lower on the right.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] In this invention, a fan generates airflow that is heated inside the electric heating drying equipment to form hot air, which blows onto the surface of the fabric, ensuring uniform contact between the front end of the fabric and the heat. At the same time, the fabric at the rear end is preheated. Finally, the heated gas is absorbed and purified through a duct and a gas purification device, and then discharged harmlessly, thereby improving the drying efficiency and safety of the device. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0014] Figure 2 This is an exploded view of the main structural part of this utility model;
[0015] Figure 3 This is a cross-sectional view of the internal structure of this utility model;
[0016] Figure 4 This is a sectional view of the vertical cross-section of this utility model.
[0017] Legend: 1. Digital printing machine body; 2. Electric heating drying equipment body; 3. Conveyor roller; 4. Fabric; 5. Frame plate; 6. Fan; 7. Lower guide plate; 8. Upper guide plate; 9. Conduit; 10. Gas purification equipment; 11. Groove; 12. Filter screen; 13. Collection box; 14. Baffle; 15. Ventilation port; 16. Fan. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0019] Reference Figure 1 - Figure 4As shown, this utility model provides a technical solution: an electric heating drying device for digital printing, including a digital printing machine body 1, an electric heating drying device body 2 installed on one side of the digital printing machine body 1, three conveying rollers 3 installed at the bottom of the electric heating drying device body 2, fabric 4 on the surface of the conveying rollers 3, a frame plate 5 fixedly connected to one side of the electric heating drying device body 2, fans 6 installed at both ends of the frame plate 5, a lower guide plate 7 fixedly connected to one side of the electric heating drying device body 2, an upper guide plate 8 rotatably connected to the top of one side of the electric heating drying device body 2 via a hinge, a conduit 9 fixedly connected to the top of the upper guide plate 8, a gas purification device 10 installed at the other end of the conduit 9, and the gas purification device 10 fixedly connected to the top of the electric heating drying device body 2. When the operator starts the fan 6, the fan 6 generates an air path to the conveying rollers 3, and at the same time, the air path passes through the heating area of the electric heating drying device body 2 to form hot air. The hot air flows backward and makes uniform contact with the surface of the fabric 4, achieving a fast and uniform drying effect. As the hot air flows backward along the surface of the fabric 4, the airflow path cools down as it moves, causing the heat of the airflow path at the rear to gradually decrease. When the airflow path comes into contact with the fabric 4 that has not yet entered the main body 2 of the electric heating drying equipment, it can preheat the surface of the fabric 4. The surface temperature of the fabric 4 after preheating gradually increases, providing better heat conduction conditions for the hot air that is about to pass through, further improving the drying efficiency. It can also effectively avoid the hot air directly contacting the digitally printed products at high temperatures, reducing the product deformation or color change that may be caused by sudden high temperatures, and ensuring the drying quality. Then, the airflow is guided and concentrated by the lower guide plate 7 and the upper guide plate 8, so that the airflow flows in the central area of the lower guide plate 7 and the upper guide plate 8. Then, the gas purification device 10 draws out the hot airflow through the duct 9, so that the gas purification device 10 collects and treats the gas formed by heating the printing pigment, and discharges it in a harmless manner, avoiding the formation of odorous and harmful gases by the heating of pigment, which may cause safety hazards to nearby workers.
[0020] Reference Figure 2 and Figure 3 As shown in this embodiment: both ends of the top of the frame plate 5 are provided with grooves 11, and a filter screen 12 is inserted into the inner wall of the groove 11. The filter screen 12 is placed at the output end of the fan 6. By placing the filter screen 12 at the air outlet of the fan 6, when the fan 6 generates airflow to the surface of the fabric 4, the filter screen 12 can filter and block the dust adsorbed in the air, preventing the dust from flowing along the airflow path generated by the fan 6 into the interior of the electric heating drying equipment body 2, causing the dust to be adsorbed on the surface of the fabric 4, which would affect the printing quality and cleanliness of the fabric 4. The filter screen 12 is installed and fixed by inserting it into the groove 11, which makes it easy for the staff to disassemble the filter screen 12 to clean the dirt adsorbed by the filter screen 12, thereby ensuring the long-term effective operation of the filter screen 12.
[0021] Reference Figure 2 As shown in this embodiment: a collection box 13 is fixedly connected to the bottom of the filter screen 12. When the filter screen 12 adsorbs and blocks dirt, the dirt will be adsorbed on one side of the filter screen 12 due to wind pressure. When the fan 6 stops running, the dirt is no longer affected by wind pressure and thus detaches from the surface of the filter screen 12. The collection box 13 set at the bottom of the filter screen 12 receives the dirt and collects the dirt falling from the surface of the filter screen 12, avoiding the dirt from splashing and affecting the surrounding environment.
[0022] Reference Figure 1 and Figure 2 As shown in this embodiment: baffles 14 are fixedly connected to both sides of the bottom of the upper guide plate 8. One side of the baffle 14 abuts against the outer side of the lower guide plate 7. Through the rotational connection between the upper guide plate 8 and the main body 2 of the electric heating drying equipment, the upper guide plate 8 can rotate upward and move away from the lower guide plate 7, so that the staff can place the fabric 4 in the gap between the lower guide plate 7 and the upper guide plate 8. Then, the baffles 14 on both sides cover the connection gap between the lower guide plate 7 and the upper guide plate 8, so that the air force cannot flow through the gap. The baffles 14 make the upper guide plate 8 heavier. The upper guide plate 8 can be guaranteed to be in a vertical state with the main body 2 of the electric heating drying equipment by the influence of the baffles 14, thereby restricting the initial position of the upper guide plate 8 and improving the sealing between the lower guide plate 7 and the upper guide plate 8.
[0023] Reference Figure 1 , Figure 2 and Figure 4 As shown in this embodiment: ventilation openings 15 are provided on both sides of the digital printing machine body 1. Fans 16 are installed inside the ventilation openings 15. The two fans 16 have the same airflow direction. The operation of the fans 16 generates unidirectional airflow. One fan delivers natural air to the fabric 4 and the other exhausts the hot air after heat exchange. This allows the fans 16 to cool the fabric 4 after drying by natural airflow, thereby accelerating the cooling speed of the fabric 4 after drying. This prevents workers from being burned when the fabric 4 is in a high-temperature state and also prevents the residual high temperature of the fabric 4 from affecting subsequent processing steps.
[0024] Reference Figure 4 As shown in this embodiment: the three conveying rollers 3 form a triangular structure, with the top two conveying rollers 3 installed at an angle, higher on the left and lower on the right. Through the height design of the conveying rollers 3, the fabric 4 being conveyed is in an inclined state, so that when the air path is in a straight flow, it comes into contact with the inclined fabric 4, increasing the contact area between the air path and the fabric 4, improving the heat transfer efficiency, making the fabric 4 more evenly heated during the drying process, and further improving the heating effect of the hot air on the fabric 4.
[0025] Working principle: When the operator starts the fan 6, it generates an airflow path towards the conveyor roller 3. Simultaneously, the airflow path passes through the heating area of the electric heating drying equipment body 2, forming hot air. This hot air flows backward and makes uniform contact with the surface of the fabric 4, achieving a rapid and uniform drying effect. As the hot air flows backward along the surface of the fabric 4, its temperature decreases with the distance it travels, causing the heat in the rear airflow path to gradually decrease. When it comes into contact with the fabric 4 that has not yet entered the electric heating drying equipment body 2, it can preheat the surface of the fabric 4. The surface temperature of the fabric 4 gradually increases, providing better heat conduction conditions for the hot air to pass through, further improving drying efficiency. This also effectively prevents direct high-temperature contact between the hot air and the digitally printed product, reducing potential deformation or color changes caused by sudden high temperatures and ensuring drying quality. Subsequently, the lower guide plate 7 and upper guide plate 8 guide and concentrate the airflow, ensuring it flows through the central area of the lower guide plate 7 and upper guide plate 8. The hot air is then drawn out by the gas purification device 10 through the duct 9, allowing the gas purification device 10 to heat the printing pigments and form… The gas is collected and treated to ensure it is discharged harmlessly. A filter 12 is placed at the outlet of the fan 6. When the fan 6 generates airflow towards the surface of the fabric 4, the filter 12 filters and blocks dust adsorbed in the air, preventing dust from flowing along the airflow path generated by the fan 6 into the interior of the electric heating drying equipment 2. When the filter 12 adsorbs and blocks dirt, the dirt is adsorbed to one side of the filter 12 due to air pressure. When the fan 6 stops running, the dirt is no longer affected by air pressure and thus detaches from the surface of the filter 12. A collection system located at the bottom of the filter 12 collects the dust. Box 13 collects dirt from the surface of filter screen 12. The fan 16 generates unidirectional airflow, with one fan supplying natural air to fabric 4 and the other expelling hot air after heat exchange. This allows the fan 16 to cool the dried fabric 4 naturally, thus accelerating the cooling speed of the dried fabric 4. The height design of the conveyor roller 3 ensures that the conveyed fabric 4 is tilted, allowing the airflow to contact the tilted fabric 4 when it is in a straight flow, increasing the contact area between the airflow and the fabric 4 and improving heat transfer efficiency.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An electric heating type drying apparatus for digital printing, comprising a digital printing machine body (1), characterized in that: The side of the digital printing machine body (1) is provided with an electric heating drying device body (2), the bottom of the electric heating drying device body (2) is provided with three conveying rollers (3), the surface of the conveying roller (3) is provided with cloth (4), one side of the electric heating drying device body (2) is fixedly connected with a frame plate (5), both ends of the frame plate (5) are provided with a fan (6), one side of the electric heating drying device body (2) is fixedly connected with a lower guide plate (7), the top of one side of the electric heating drying device body (2) is rotatably connected with an upper guide plate (8) through a hinge, the top of the upper guide plate (8) is fixedly connected with a pipe (9), the other end of the pipe (9) is provided with a gas purification device (10), the gas purification device (10) is fixedly connected to the top of the electric heating drying device body (2).
2. The electric heating drying apparatus for digital printing according to claim 1, characterized in that: The top of the frame plate (5) is provided with a groove (11) at both ends, the inner wall of the groove (11) is inserted with a filter screen (12), and the filter screen (12) is arranged at the output end of the fan (6).
3. The electric heating drying apparatus for digital printing according to claim 2, characterized in that: The bottom of the filter screen (12) is fixedly connected with a collecting box (13).
4. The electric heating drying apparatus for digital printing according to claim 1, characterized in that: Both sides of the bottom of the upper guide plate (8) are fixedly connected with a baffle (14), and one side of the baffle (14) abuts against the outer side of the lower guide plate (7).
5. The electric heating drying apparatus for digital printing according to claim 1, characterized in that: Both sides of the digital printing machine body (1) are provided with air vents (15), the air vents (15) are provided with fans (16), and the directions of the two fans (16) are uniform.
6. The electric heating drying apparatus for digital printing according to claim 1, characterized in that: The three conveying rollers (3) are in a triangular structure, and the top two conveying rollers (3) are inclinedly installed with the left higher and the right lower.