Cooling and waste discharging device of UV light curing oven

Abstract

The utility model belongs to the technical field of UV light curing ovens, and particularly relates to a cooling and waste discharging device of a UV light curing oven. A cooling and waste discharging device of a UV light curing oven is applied to a light curing oven body. One end of the light curing oven body is provided with an air inlet cooling assembly, and the other end of the light curing oven body is provided with a waste discharge assembly for discharging water vapor in the curing reaction process; by means of the air inlet cooling assembly, nitrogen is cooled through the heat exchanger before entering the light curing oven. And the cooled nitrogen uniformly enters the photocuring furnace through the exhaust holes in the inner pipe, so that the temperature in the furnace is effectively reduced, and the problem of non-uniform curing caused by local overheating is avoided. Due to the fact that the nitrogen is evenly distributed, the materials are heated more evenly in the curing process, the curing defect caused by uneven temperature is reduced, and therefore the curing quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of UV light curing furnaces, and in particular relates to a cooling and waste discharge device for a UV light curing furnace. Background Art

[0002] Many existing UV curing furnaces lack air cooling and exhaust systems. This prevents the timely removal of vaporized water during the initial reaction, blocking the UV lamp's ultraviolet radiation and reducing its intensity, leading to quality issues such as inadequate curing. Curing reactions are generally exothermic, and without air cooling, the heat generated by the reaction is not promptly cooled or removed, raising the UV lamp's operating temperature and reducing its intensity, impacting product quality. Consequently, the lack of air cooling and exhaust systems in existing UV curing furnaces leads to poor curing quality. Utility Model Content

[0003] The utility model provides a cooling and waste discharge device for a UV curing furnace, aiming to solve the problem of poor curing quality of the UV curing furnace in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A cooling and waste discharge device for a UV curing oven, applied to the main body of the curing oven;

[0006] One end of the light curing furnace body is provided with an air inlet cooling component, and the other end of the light curing furnace body is provided with a waste discharge component for discharging water vapor during the curing reaction;

[0007] The air inlet cooling assembly includes a nitrogen air inlet pipe and a heat exchanger arranged outside the light curing furnace body, the nitrogen air inlet pipe includes an outer pipe located outside the light curing furnace body and an inner pipe located inside the light curing furnace body, the inner pipe and the outer pipe are connected through the heat exchanger, the nitrogen in the outer pipe is cooled by the heat exchanger and then enters the inner pipe, the inner pipe is provided with an exhaust hole, the nitrogen in the inner pipe enters the light curing furnace through the exhaust hole, and the inner pipe spans the light curing furnace body along the width direction of the light curing furnace;

[0008] The waste discharge component includes a suction pipe, there are two suction pipes, and the two suction pipes are respectively located on both sides of the light curing furnace body. The waste discharge component also includes an exhaust pipe, both of the suction pipes are connected to the exhaust pipe, and a fan is connected in series to the exhaust pipe.

[0009] A further improved solution: a partition is provided in the inner tube, the partition divides the inner tube into an upper chamber and a lower chamber, and a diversion hole is provided on the partition to connect the upper chamber with the lower chamber. The nitrogen output by the heat exchanger enters the upper chamber and then enters the lower chamber through the diversion hole. The nitrogen in the lower chamber enters the light curing furnace body through the exhaust hole.

[0010] Based on the above technical solution: the design of the diverter hole enables the nitrogen to form an effective flow path between the upper chamber and the lower chamber. When the nitrogen enters the lower chamber from the upper chamber through the diverter hole, the nitrogen can achieve more uniform diffusion in the lower chamber due to the uniform distribution of the diverter hole. This uniform nitrogen distribution helps to reduce the difference in oxygen concentration in different areas of the light-curing furnace body, thereby improving the uniformity of curing. After the nitrogen is evenly distributed, it can more effectively prevent oxidation reactions on the surface of the material during the curing process and protect the material properties. At the same time, the uniform nitrogen atmosphere also helps to improve the penetration and utilization rate of UV light, making the curing process more efficient and thorough. By adjusting the diverter hole, the flow speed and direction of nitrogen in the light-curing furnace body can be further controlled, thereby optimizing the curing environment. This helps to reduce problems such as thermal stress and deformation during the curing process, and improve the quality and stability of the cured product.

[0011] A further improved solution: the diversion holes are evenly distributed on the partition plate, and the exhaust holes are evenly distributed on the inner tube along the length direction of the inner tube.

[0012] Based on the above technical solution, when the nitrogen output from the heat exchanger enters the upper chamber, the even distribution of diverter holes on the partition allows the nitrogen to flow evenly and stably through the diverter holes into the lower chamber. This uniform distribution ensures more uniform nitrogen diffusion within the lower chamber, avoiding localized nitrogen concentrations that are too high or too low. The uniform distribution of exhaust holes along the length of the inner tube allows the nitrogen in the lower chamber to be discharged evenly and continuously and smoothly into the main body of the light-curing oven. This further ensures uniform distribution of nitrogen within the oven, providing a stable nitrogen atmosphere for the curing process.

[0013] A further improved solution: the diversion hole and the exhaust hole are staggered.

[0014] Based on the above technical solution, the staggered placement of the diverter holes and exhaust holes effectively prevents nitrogen from flowing directly from the diverter holes into the exhaust holes during operation, creating a "short circuit." This design ensures that nitrogen can fully diffuse within the lower chamber. The staggered placement also prolongs the nitrogen's residence time within the light-curing oven, allowing the active ingredients in the nitrogen to more fully react with the curing material. This not only improves nitrogen utilization, but also reduces nitrogen waste and lowers production costs.

[0015] A further improved solution: the heat exchanger includes an air inlet and an air outlet, the air inlet is connected to the air source through the outer tube, and the air outlet is connected to the upper cavity of the inner tube; the heat exchanger also includes a cooling water inlet and a cooling water outlet.

[0016] Based on the above technical solution, the heat exchanger's air inlet is connected to the air source via an external tube, ensuring a stable supply of nitrogen. After passing through the heat exchanger, the nitrogen's temperature is regulated, helping to reduce temperature fluctuations during the curing process and improve curing quality. The heat exchanger's air outlet is connected to the upper chamber of the inner tube. After passing through the heat exchanger, the nitrogen's temperature is adjusted to better suit the curing process. This design enables more precise temperature control during the curing process, helping to improve product quality and consistency. The heat exchanger includes a cooling water inlet and outlet. Cooling water circulates through the heat exchanger, removing heat from the nitrogen and lowering its temperature. This design improves cooling efficiency, ensuring that the nitrogen is fully cooled before entering the light-curing oven. This improved cooling effect helps reduce temperature stress during the curing process and lowers the heat load on the equipment. This helps extend the equipment's service life and reduce maintenance costs.

[0017] A further improved solution: the cross-section of the suction pipe is a square, and the suction pipe is arranged along the length direction of the light curing furnace body.

[0018] Based on the above technical solution, the uniform cross-sectional shape of the suction duct ensures that nitrogen enters the light-curing oven evenly and stably. This uniform nitrogen distribution helps improve curing uniformity and reduces color variation and deformation of the cured product. The square suction duct's arrangement along the length of the light-curing oven optimizes the airflow path. This not only increases nitrogen utilization but also ensures a stable oxygen concentration during the curing process, thereby improving cure quality. The square suction duct design contributes to overall system efficiency.

[0019] A further improved solution: suction holes are evenly distributed on the suction pipe, and the suction holes are located in the light curing furnace body.

[0020] Based on the above technical solution: Due to the uniform distribution of nitrogen, the penetration and utilization rate of UV light in the curing oven are also improved. Nitrogen can more effectively prevent oxidation reactions on the material surface during the curing process, protecting the material properties. At the same time, the uniform nitrogen atmosphere also helps to increase the penetration depth of UV light, making the curing process more efficient and thorough. This helps to shorten the curing time and improve production efficiency. The evenly distributed suction holes on the suction pipe also help to optimize the curing environment. By adjusting the size and number of the suction holes, the flow rate and direction of nitrogen in the light curing oven can be precisely controlled. This precise control helps to reduce thermal stress, deformation and other problems during the curing process, and improves the quality and stability of the cured product.

[0021] A further improved solution: an air valve for adjusting the air volume in the suction pipe is provided on the portion of the suction pipe outside the light curing furnace body, and there are two air valves, which correspond one to one with the two suction pipes.

[0022] Based on the above technical solution: By providing two air valves, the air volume in the two suction pipes can be independently adjusted. This design makes air volume adjustment more flexible and allows precise control of the nitrogen flow rate in the light-curing oven according to actual curing needs. This helps reduce waste during the curing process and improve nitrogen utilization. The air valve adjustment function helps optimize the curing environment within the light-curing oven. By adjusting the air valve opening, the flow rate and distribution of nitrogen in the light-curing oven can be changed, thereby achieving precise control of the curing environment. This precise environmental control helps improve the uniformity and quality of curing and reduces problems such as color difference and deformation of the cured product.

[0023] A further improved solution: the cross-section of the exhaust pipe is circular.

[0024] Based on the above technical solution: The design of a circular exhaust duct helps reduce the flow resistance of gas in the duct. Because the circular cross-sectional shape has the smallest circumference-to-area ratio, this allows the gas to flow more smoothly in the duct, reduces the formation of eddies and turbulence, and thus improves the gas flow efficiency. This design is particularly important in UV light-curing ovens because it ensures that nitrogen or other protective gases can be quickly and evenly distributed throughout the curing oven, providing a stable environment for the curing process. The circular exhaust duct has greater structural stability. Compared with other shapes, circular ducts can more evenly distribute stress when subjected to internal pressure or external loads, thereby reducing the risk of duct deformation or rupture. This structural stability is crucial to ensuring the long-term stable operation of UV light-curing ovens.

[0025] A further improved solution: the two suction pipes are symmetrically arranged about the symmetrical center plane of the light curing furnace body.

[0026] Based on the above technical solution: The symmetrically arranged suction pipes can ensure that the exhaust gas is discharged more evenly within the main body of the light-curing furnace. Since the two suction pipes are located on both sides of the main body of the light-curing furnace and are symmetrical about the center plane of symmetry, they can extract exhaust gas from the furnace at the same time, making the flow and discharge of exhaust gas in the furnace more balanced. This uniform exhaust gas discharge helps to reduce localized excessive exhaust gas concentration or exhaust gas stagnation, thereby improving the exhaust gas treatment efficiency. The symmetrically arranged suction pipes also help to improve the exhaust gas treatment efficiency. Since the exhaust gas is discharged evenly, the exhaust gas treatment equipment can treat the exhaust gas more effectively. This not only reduces the exhaust gas emissions and the content of pollutants, but also reduces the load and operating costs of the exhaust gas treatment equipment. At the same time, the uniform exhaust gas discharge also helps to improve the overall performance and stability of the UV light-curing furnace.

[0027] The beneficial effects of the utility model are:

[0028] This utility model utilizes an air inlet cooling assembly to cool nitrogen through a heat exchanger before entering the light-curing oven. The cooled nitrogen then flows evenly into the oven through exhaust holes on the inner tube, effectively lowering the oven temperature and preventing uneven curing caused by localized overheating. This even distribution of nitrogen ensures more uniform heating of the material during the curing process, reducing curing defects such as cracks and deformation caused by temperature variations, thereby improving curing quality.

[0029] The exhaust assembly effectively removes water vapor and other waste gases generated during the curing process through two suction pipes. These pipes, located on either side of the light-curing oven, ensure comprehensive collection of waste gases, preventing them from stagnating and accumulating within the oven. Fans connected in series to the exhaust pipes provide sufficient suction to ensure smooth exhaust discharge. Furthermore, this design helps reduce environmental pollution from waste gases, complying with environmental protection requirements.

[0030] The synergistic effect of the air inlet cooling assembly and exhaust exhaust assembly provides a stable curing environment for the light-curing oven. Uniform temperature distribution and smooth exhaust gas discharge help reduce fluctuations and uncertainties during the curing process. This stable curing environment and effective exhaust gas treatment reduce equipment damage caused by overheating and exhaust gas corrosion, thereby extending the equipment's service life.

[0031] Due to the uniform temperature distribution and smooth exhaust gas discharge during the curing process, the curing speed is improved. This helps shorten the production cycle and improve production efficiency. The stable curing environment and effective exhaust gas treatment reduce the maintenance requirements of the equipment and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For users of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 The utility model is a front view of a cooling and waste discharge device of a UV light curing furnace.

[0034] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle.

[0035] Figure 3 yes Figure 1 Cross-sectional view at the middle BB.

[0036] Description of the numbers in the figure:

[0037] 1-Light curing oven body; 2-Air inlet cooling assembly; 3-Waste exhaust assembly; 4-Heat exchanger; 5-Outer pipe; 6-Inner pipe; 7-Suction pipe; 8-Exhaust pipe; 9-Fan; 10-Air valve. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by users of the present invention without creative work are within the scope of protection of the present invention.

[0039] refer to Figures 1 to 3 , a cooling and waste discharge device for a UV curing oven, applied to a curing oven body 1;

[0040] An air inlet cooling component 2 is provided at one end of the light curing furnace body 1, and a waste discharge component 3 for discharging water vapor during the curing reaction is provided at the other end of the light curing furnace body 1;

[0041] The air inlet cooling assembly 2 includes a nitrogen air inlet pipe and a heat exchanger 4 arranged outside the light curing furnace body 1. The nitrogen air inlet pipe includes an outer pipe 5 located outside the light curing furnace body 1 and an inner pipe 6 located inside the light curing furnace body 1. The inner pipe 6 is connected to the outer pipe 5 through the heat exchanger 4. The nitrogen in the outer pipe 5 is cooled by the heat exchanger 4 and then enters the inner pipe 6. The inner pipe 6 is provided with an exhaust hole. The nitrogen in the inner pipe 6 enters the light curing furnace through the exhaust hole. The inner pipe 6 spans the light curing furnace body 1 along the width direction of the light curing furnace.

[0042] The waste discharge component 3 includes a suction pipe 7, and there are two suction pipes 7. The two suction pipes 7 are respectively located on both sides of the light curing furnace body 1. The waste discharge component 3 also includes an exhaust pipe 8, and the two suction pipes 7 are communicated with the exhaust pipe 8. A fan 9 is connected in series to the exhaust pipe 8.

[0043] Specifically, a partition is provided within the inner tube 6 , dividing the inner tube 6 into an upper chamber and a lower chamber. A diverter hole is provided on the partition that connects the upper chamber and the lower chamber. Nitrogen gas output from the heat exchanger 4 enters the upper chamber and then flows through the diverter hole into the lower chamber. Nitrogen gas in the lower chamber enters the light-curing furnace body 1 through the exhaust hole. The partition and the inner tube 6 may be integrally formed.

[0044] The diverter holes are evenly distributed on the partition, and the exhaust holes are evenly distributed on the inner tube 6 along the length of the inner tube 6. The diverter holes and the exhaust holes are staggered. The cross-sectional shape of the diverter holes can be circular or polygonal. The cross-sectional shape of the exhaust holes can be circular or polygonal.

[0045] Specifically, the heat exchanger 4 includes an air inlet and an air outlet. The air inlet communicates with the air source through the outer tube 5, and the air outlet communicates with the upper cavity of the inner tube 6. The heat exchanger 4 also includes a cooling water inlet and a cooling water outlet. Heat exchange tubes may be provided within the heat exchanger 4, connecting the air inlet and the air outlet through the heat exchange tubes. Cooling water contacts the heat exchange tubes within the heat exchanger 4, completing heat exchange and reducing the temperature of the nitrogen.

[0046] Wherein: the cross-sectional shape of the suction pipe 7 is square, and the suction pipe 7 is arranged along the length direction of the light curing furnace body 1. The suction pipe 7 is evenly distributed with suction holes, and the suction holes are located inside the light curing furnace body 1. The portion of the suction pipe 7 located outside the light curing furnace body 1 is provided with an air valve 10 for adjusting the air volume in the suction pipe 7. There are two air valves 10, and the two air valves 10 correspond one to one to the two suction pipes 7. The cross-sectional shape of the exhaust pipe 8 is circular. The two suction pipes 7 are symmetrically arranged with respect to the center plane of symmetry of the light curing furnace body 1. The cross-sectional shape of the suction pipe 7 can also be other shapes, such as circular or rectangular. The cross-sectional shape of the exhaust pipe 8 can also be polygonal, such as a quadrilateral, etc. The air valve 10 can be a solenoid valve for easy operation.

[0047] The working principle of this embodiment is as follows:

[0048] Nitrogen gas enters the nitrogen inlet pipe's outer tube 5 from an external source. Heat exchanger 4 cools the nitrogen in outer tube 5 to a suitable temperature. The cooled nitrogen then enters inner tube 6 and evenly flows into the UV curing oven through exhaust holes on the inner tube 6. This evenly distributed cooling nitrogen provides a stable cooling effect during the curing process, helping to improve curing quality.

[0049] Exhaust gases, such as water vapor, generated during the curing process are effectively collected by suction pipes 7 located on both sides of the light-curing oven body 1. The collected exhaust gas passes through suction pipes 7 and enters exhaust pipes 8. Fans 9 provide suction to smoothly exhaust the exhaust gas outside the light-curing oven body 1.

[0050] A transversely arranged inner tube 6 is provided at the rear of the photocuring furnace body 1. The inlet of the heat exchanger 4 is connected to the nitrogen source. The heat exchanger 4 cools the nitrogen entering the photocuring furnace body 1 through chilled water. The cooled nitrogen enters the upper chamber, and the nitrogen in the upper chamber then enters the lower chamber through the diversion hole. The nitrogen is fully mixed and then blown out at a low speed and evenly. Two square exhaust suction pipes 7 are symmetrically arranged on the photocuring furnace body 1. The suction pipes 7 are arranged along the length of the photocuring furnace body 1, covering multiple groups of UV lamp groups, and the suction pipes 7 are located between the lamp groups and the conveyor belt; the suction holes on the side of the suction pipes 7 are used to suck air, and then lead it out of the photocuring furnace body 1 through a circular pipe. After the suction pipes 7 on both sides merge, they enter the exhaust fan 9 and are discharged into the exhaust main pipe of the factory area; before the suction pipes 7 on both sides are merged, an air valve 10 is provided on each side to adjust the air volume on both sides to be consistent.

[0051] The air inlet cooling component 2 and the exhaust component 3 can take away the heat generated by light curing. The cold nitrogen can partially condense the water vapor generated by vaporization during the reaction. The remaining water vapor is extracted by the fan 9 through the exhaust suction pipe 7. The water vapor generated by the reaction in the furnace is removed in time, allowing the ultraviolet rays of the UV lamp to fully irradiate the product, thereby improving the lighting efficiency.

[0052] The present invention is not limited to the above optional implementation methods. Under the premise of not conflicting with each other, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the scope of protection of the present invention.

Claims

1. A cooling and waste discharge device for a UV curing furnace, characterized by: Applicable to the light curing oven body; One end of the light curing furnace body is provided with an air inlet cooling component, and the other end of the light curing furnace body is provided with a waste discharge component for discharging water vapor during the curing reaction; The air inlet cooling assembly includes a nitrogen air inlet pipe and a heat exchanger arranged outside the light curing furnace body, the nitrogen air inlet pipe includes an outer pipe located outside the light curing furnace body and an inner pipe located inside the light curing furnace body, the inner pipe and the outer pipe are connected through the heat exchanger, the nitrogen in the outer pipe is cooled by the heat exchanger and then enters the inner pipe, the inner pipe is provided with an exhaust hole, the nitrogen in the inner pipe enters the light curing furnace through the exhaust hole, and the inner pipe spans the light curing furnace body along the width direction of the light curing furnace; The waste discharge component includes a suction pipe, there are two suction pipes, and the two suction pipes are respectively located on both sides of the light curing furnace body. The waste discharge component also includes an exhaust pipe, both of the suction pipes are connected to the exhaust pipe, and a fan is connected in series to the exhaust pipe.

2. The cooling and waste discharge device of a UV curing furnace according to claim 1, characterized in that: A partition is provided in the inner tube, which divides the inner tube into an upper chamber and a lower chamber. A diversion hole is provided on the partition to connect the upper chamber with the lower chamber. The nitrogen output by the heat exchanger enters the upper chamber and then enters the lower chamber through the diversion hole. The nitrogen in the lower chamber enters the light curing furnace body through the exhaust hole.

3. The cooling and waste discharge device of a UV curing furnace according to claim 2, characterized in that: The diversion holes are evenly distributed on the partition plate, and the exhaust holes are evenly distributed on the inner tube along the length direction of the inner tube.

4. The cooling and waste discharge device of a UV curing furnace according to claim 3, characterized in that: The diversion hole and the exhaust hole are staggered.

5. The cooling and waste discharge device of a UV curing furnace according to claim 2, characterized in that: The heat exchanger includes an air inlet and an air outlet, the air inlet is connected to the air source through the outer tube, and the air outlet is connected to the upper cavity of the inner tube; the heat exchanger also includes a cooling water inlet and a cooling water outlet.

6. The cooling and waste discharge device of a UV curing furnace according to claim 1, characterized in that: The cross-section of the air suction pipe is square, and the air suction pipe is arranged along the length direction of the light curing furnace body.

7. The cooling and waste discharge device of a UV curing furnace according to claim 6, characterized in that: The suction pipe is evenly distributed with suction holes, and the suction holes are located in the light curing furnace body.

8. The cooling and waste discharge device of a UV curing furnace according to claim 7, characterized in that: The portion of the air suction pipe located outside the light curing furnace body is provided with an air valve for adjusting the air volume in the air suction pipe. There are two air valves, and the two air valves correspond one to one to the two air suction pipes.

9. The cooling and waste discharge device of a UV curing furnace according to claim 1, characterized in that: The cross-section of the exhaust pipe is circular.

10. The cooling and waste discharge device of a UV curing furnace according to claim 1, characterized in that: The two air suction pipes are symmetrically arranged about the symmetrical center plane of the light curing furnace body.

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