Polyurethane foam photocatalytic aldehyde removal performance enhancement curing apparatus

Abstract

The utility model relates to polyurethane foam technical field discloses polyurethane foam photocatalysis aldehyde removal performance intensification solidification equipment, including equipment shell, the top surface rotatable connection of equipment shell has the sealing cover, the inside fixed setting of sealing cover has the hot -blast circulation mechanism for hot -blast circulation heating, the hot -blast circulation mechanism includes U type mounting plate, baffle, motor, fan blade, electric heating tube, U type sealing plate, exhaust hole no.

Description

Technical Field

[0001] This application belongs to the field of polyurethane foam technology, specifically a polyurethane foam photocatalytic formaldehyde removal performance enhancement and curing equipment. Background Technology

[0002] Polyurethane foam is a porous functional material made primarily of polyurethane. Due to its lightweight, good elasticity, and excellent heat and sound insulation properties, it is widely used in furniture, home appliances, and construction. However, it continuously releases volatile organic compounds such as formaldehyde during production and use, posing a potential threat to the indoor environment and human health.

[0003] To address this challenge, a photocatalytic formaldehyde removal and curing device for polyurethane foam has been developed. This device integrates core components such as a conveying system, a sealed processing chamber, a hot air circulation device, a photocatalytic mechanism, a curing module, and an intelligent control system. Its workflow involves continuously feeding polyurethane foam into the sealed processing chamber via the conveying system. The hot air circulation device provides a uniform heat flow at a specific temperature, acting on the foam to accelerate the release of formaldehyde. Simultaneously, an ultraviolet light source arranged within the chamber activates a photocatalyst (such as nano-titanium dioxide), utilizing photogenerated strong oxidizing substances to efficiently degrade the released formaldehyde molecules into harmless carbon dioxide and water. Subsequently, the curing module cools or cures the treated foam at low temperatures, thereby stabilizing its microstructure and macroscopic properties.

[0004] Existing photocatalytic formaldehyde removal performance enhancement curing equipment has a relatively simple hot air circulation mode. Most of its hot air outlets can only deliver air to the top and bottom of the polyurethane foam on the conveyor belt for heating. This one-way heating method is difficult to effectively and uniformly heat the three-dimensional sides of the foam material, resulting in insufficient and incomplete release of formaldehyde inside the foam, creating processing dead zones. Furthermore, it is difficult to achieve a multi-stage, segmented heating process and cannot provide a matching, gradual temperature environment according to the different processing needs of the foam during different stages of transportation (such as initial heating, deep desorption, and final stabilization). Therefore, we provide a polyurethane foam photocatalytic formaldehyde removal performance enhancement curing equipment. Utility Model Content

[0005] The purpose of this application is to provide a polyurethane foam photocatalytic formaldehyde removal performance enhancement curing device in order to solve the problems mentioned above.

[0006] The technical solution adopted in this application is as follows: a polyurethane foam photocatalytic formaldehyde removal performance enhancement curing device, including a device housing, a sealing cover rotatably connected to the top surface of the device housing, and a hot air circulation mechanism for hot air circulation heating fixedly installed inside the sealing cover.

[0007] The hot air circulation mechanism includes a U-shaped mounting plate, partitions, a motor, fan blades, an electric heating element, a U-shaped sealing plate, an exhaust port one, and an exhaust port two. The U-shaped mounting plate is fixedly installed inside the sealing cover by fastening bolts. Two partitions are evenly spaced along the length of the U-shaped mounting plate, dividing its interior into three independent hot air chambers. At least one motor is fixedly installed on the top surface of the U-shaped mounting plate corresponding to each hot air chamber. The drive end of the motor extends vertically downwards into the corresponding hot air chamber. The drive end is fixedly equipped with fan blades. Each hot air chamber inside the U-shaped mounting plate is fixedly equipped with two electric heating tubes for heating air. Inside the U-shaped mounting plate, below the electric heating tubes, a U-shaped sealing plate is fixedly installed. The U-shaped sealing plate and the inner wall of the U-shaped mounting plate enclose a hot air circulation channel. The inner side wall of the U-shaped sealing plate is symmetrically provided with multiple exhaust holes 1 for supplying air to the side of the polyurethane foam along its height direction. The inner top surface of the U-shaped sealing plate is provided with multiple exhaust holes 2 for supplying air to the top of the polyurethane foam along its length direction.

[0008] In a preferred embodiment, two feed holes are provided on the front side of the equipment housing. Above the two feed holes, telescopic cylinders are fixedly mounted on the front side of the equipment housing via mounting bases. The telescopic ends of the telescopic cylinders are vertically downward and fixedly mounted with baffles.

[0009] In a preferred embodiment, a photocatalytic connection housing is fixedly installed on the rear side of the device housing, and the interior of the photocatalytic connection housing is connected to the interior of the device housing.

[0010] In a preferred embodiment, two vertically arranged rails are fixedly installed on the front side of the equipment housing for each baffle, and the two rails are located on both sides of the feed hole. A slider is slidably connected to the front side of each of the rails, and the front side of the slider is fixedly connected to the rear side of the baffle by bolts.

[0011] In a preferred embodiment, the top surfaces of both the device housing and the photocatalytic connection housing are welded with exhaust pipes for discharging exhaust gases. The end of the exhaust pipe away from the device housing and the photocatalytic connection housing is sealed and connected to the air inlet of the external filtration and purification system.

[0012] In a preferred embodiment, support feet for support and leveling are fixedly installed at the four corners of the bottom surface of the device housing and the photocatalytic connection housing.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0014] 1. In this application, due to the adoption of the above-mentioned scheme, the user first sets the heating temperature of the three hot air chambers (gradually increasing) according to the formaldehyde release requirements of the foam, starts the motor to drive the fan blades to form a stable hot air flow. When the foam enters the equipment from the feed inlet via the conveyor belt, the telescopic cylinder drives the baffle to adjust the opening and closing according to the conveying speed to reduce the leakage of hot air and formaldehyde. The foam passes through the three chambers in sequence. The gradient heating combined with multi-directional air supply promotes the full release of surface and deep formaldehyde. The hot air carrying formaldehyde enters the photocatalytic chamber. After being degraded by the photocatalytic component, the residual exhaust gas enters the filtration system through the pipeline for secondary treatment to meet the emission standards. The treated foam is sent out from the other side of the equipment, completing the formaldehyde removal and curing process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 This is a schematic diagram of the internal structure of the sealing cover in this application;

[0017] Figure 3 This is a schematic diagram of the U-shaped mounting plate structure of this application;

[0018] Figure 4 This is a schematic diagram of the shielding plate structure before it is installed in this application.

[0019] The markings in the diagram are: 1. Equipment housing; 2. Sealing cover; 3. Hot air circulation mechanism; 301. U-shaped mounting plate; 302. Partition plate; 303. Motor; 304. Fan blade; 305. Motor heat pipe; 306. U-shaped sealing plate; 307. Exhaust port one; 308. Exhaust port two; 4. Feed port; 5. Telescopic cylinder; 6. Baffle plate; 7. Photocatalytic connecting housing; 8. Track; 9. Slider; 10. Exhaust pipe; 11. Support feet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] refer to Figures 1-4As shown, the polyurethane foam photocatalytic formaldehyde removal performance enhancement curing equipment includes a housing 1. A photocatalytic connecting housing 7 is fixedly installed on the rear side of the housing 1, and the interior of the photocatalytic connecting housing 7 is connected to the interior of the housing 1. Exhaust pipes 10 for discharging exhaust gas are welded to the top surfaces of both the housing 1 and the photocatalytic connecting housing 7. The end of the exhaust pipe 10 away from the housing 1 and the photocatalytic connecting housing 7 is sealed to the air inlet of an external filtration and purification system. By connecting the photocatalytic connecting housing 7 to the interior of the housing 1, it is ensured that the formaldehyde gas carried out by the hot air inside the housing 1 can completely enter the photocatalytic area, avoiding formaldehyde leakage in the middle. By sealing the exhaust pipe 10 to the external filtration and purification system, it is possible to perform secondary purification on any trace amounts of formaldehyde that may remain after photocatalytic treatment, further reducing the pollution of the environment caused by exhaust gas emissions. At the same time, the welding connection method can improve the sealing and structural stability of the exhaust pipe 10, preventing exhaust gas from escaping from the interface.

[0022] refer to Figures 1-4 As shown, support feet 11 for support and leveling are fixedly installed at the four corners of the bottom surface of the equipment housing 1 and the photocatalytic connection housing 7. The support feet 11 at the four corners can provide stable support for the whole equipment, preventing the equipment from shaking due to uneven force during operation. The support feet 11 can also be adjusted in height through the threaded structure, which makes it easy to quickly level the equipment on the ground with different flatness, ensuring that the conveyor belt can transport polyurethane foam horizontally, preventing the foam from shifting during transportation, and ensuring the stability of subsequent formaldehyde removal and curing treatment.

[0023] refer to Figures 1-4 As shown, a sealing cover 2 is rotatably connected to the top surface of the equipment housing 1. A hot air circulation mechanism 3 for hot air circulation heating is fixedly installed inside the sealing cover 2. The sealing cover 2 is rotatably connected to the equipment housing 1, which facilitates the opening of the sealing cover 2 to inspect and replace the internal hot air circulation mechanism 3 during equipment maintenance. It also ensures the sealing of the equipment housing 1 during equipment operation, reduces hot air loss, maintains stable internal temperature, and improves hot air utilization efficiency. By integrating the hot air circulation mechanism 3 inside the sealing cover 2, the internal structural layout of the equipment can be optimized, and interference between the hot air circulation components and other structures can be avoided.

[0024] refer to Figures 1-4As shown, two feed holes 4 are opened on the front side of the equipment housing 1. Above each feed hole 4, a telescopic cylinder 5 is fixedly mounted on the front side of the equipment housing 1 via a mounting base. The telescopic end of the telescopic cylinder 5 is vertically downward and fixedly mounted with a baffle plate 6. Corresponding to each baffle plate 6, two vertically arranged rails 8 are fixedly mounted on the front side of the equipment housing 1, with the two rails 8 located on either side of the feed hole 4. A slider 9 is slidably connected to the front side of each rail 8, and the front side of the slider 9 is fixedly connected to the rear side of the baffle plate 6 by bolts. The feed holes 4 are connected via two feed holes. Hole 4 can adapt to the conveying needs of different widths or multiple sets of conveyor belts, improving the equipment's adaptability to different specifications of polyurethane foam. The baffle plate 6 is driven to rise and fall by the telescopic cylinder 5, which can flexibly control the opening and closing of the feed hole 4 according to the foam conveying rhythm. When there is no foam conveying, the feed hole 4 is closed to reduce the leakage of hot air and formaldehyde inside the equipment. The cooperation of the set track 8 and slider 9 can guide the lifting direction of the baffle plate 6, preventing the baffle plate 6 from deviating during the movement, ensuring that it can accurately seal the feed hole 4, and at the same time reducing the resistance when the telescopic cylinder 5 is driven.

[0025] refer to Figures 1-4 As shown, the hot air circulation mechanism 3 includes a U-shaped mounting plate 301, a partition plate 302, a motor 303, a fan blade 304, an electric heating tube 305, a U-shaped sealing plate 306, an exhaust port 1 307, and an exhaust port 2 308. The U-shaped mounting plate 301 is fixedly installed inside the sealing cover 2 by fastening bolts. Two partition plates 302 are evenly spaced along the length of the U-shaped mounting plate 301, dividing the interior of the U-shaped mounting plate 301 into three independent hot air chambers. At least one motor 303 is fixedly installed on the top surface of the U-shaped mounting plate 301 corresponding to each hot air chamber. The drive end of the motor 303 is vertically oriented... Extending downwards to the corresponding hot air chamber, the drive end of the motor 303 is fixedly equipped with a fan blade 304; the partition 302 facilitates the division of the U-shaped mounting plate 301 into three independent hot air chambers, enabling independent temperature control of each chamber, meeting the gradient heating requirements of different areas and stages of polyurethane foam, and avoiding problems such as incomplete formaldehyde release or foam deformation caused by heating at a single temperature. Each chamber corresponds to an independent motor 303 and fan blade 304, which can adjust the hot air flow rate of each chamber separately, ensuring that the hot air evenly covers the foam surface, and at the same time, it is convenient to repair a component in a certain chamber separately without affecting the overall operation of the equipment.

[0026] refer to Figures 1-4As shown, each hot air chamber inside the U-shaped mounting plate 301 is fixedly equipped with two electric heating tubes 305 for heating air. A U-shaped sealing plate 306 is fixedly installed inside the U-shaped mounting plate 301 below the electric heating tubes 305, and the U-shaped sealing plate 306 and the inner wall of the U-shaped mounting plate 301 enclose a hot air circulation channel. Multiple exhaust holes 307 for supplying air to the edges of the polyurethane foam are symmetrically opened on the inner sidewall of the U-shaped sealing plate 306 along its height direction. Multiple exhaust holes for supplying air to the top of the polyurethane foam are opened on the inner top surface of the U-shaped sealing plate 306 along its length direction. 308; By setting two electric heating tubes 305 in each hot air chamber, the internal air temperature of the chamber can be quickly increased, and the temperature can be precisely controlled by adjusting the power of the electric heating tubes 305 to adapt to the temperature requirements of different formaldehyde release stages. The hot air circulation channel enclosed by the U-shaped sealing plate 306 and the U-shaped mounting plate 301 can guide the hot air to flow in a directional manner and avoid energy waste caused by disorderly diffusion of hot air. The exhaust port 1 307 and exhaust port 2 308 respectively send air to the side and top of the foam, eliminate the blind spot of hot air circulation, promote the full release of deep formaldehyde inside the foam, and improve the formaldehyde removal efficiency.

[0027] The implementation principle of the polyurethane foam photocatalytic formaldehyde removal performance enhancement curing equipment embodiment of this application is as follows: First, the user sets the temperature of the electric heating tube 305 in the three independent hot air chambers according to the formaldehyde release requirements of the foam to be treated (e.g., initially, the chamber near the feed hole 4 is set to 50-60℃, the middle chamber to 65-70℃, and the chamber near the photocatalytic connection housing 7 to 70-75℃). Then, the motor 303 is started to drive the fan blades 304 to rotate, creating a stable airflow in the hot air circulation channel. When the polyurethane foam enters the equipment housing 1 through the feed hole 4 via the conveyor belt, the telescopic cylinder 5 drives the baffle plate 6 to descend along the track 8. The opening and closing range of the baffle plate 6 is adjusted in real time according to the foam conveying speed to reduce hot air and formaldehyde leakage. At this time, after the foam enters the equipment housing 1, it first passes through the first hot air chamber. In the first chamber, hot air from the first chamber acts on the foam through exhaust vent 307 and exhaust vent 308, stimulating the release of formaldehyde from the surface. As the foam is conveyed by the conveyor belt, it sequentially enters the middle and third hot air chambers. The gradually increasing temperature causes the deep formaldehyde inside the foam to gradually escape, and the multi-directional airflow ensures that the formaldehyde is fully removed from the foam. The hot air carrying the formaldehyde enters the photocatalytic connection shell 7, which is connected to the equipment shell 1, under the influence of the airflow. After being degraded by the photocatalytic components (such as UV lamps and titanium dioxide catalysts), most of the formaldehyde is decomposed into harmless carbon dioxide and water. The remaining exhaust gas, which may contain trace amounts of formaldehyde, enters the external filtration and purification system through the exhaust pipe 10 for secondary treatment, and finally meets the emission standards. The treated polyurethane foam is then conveyed out from the other side of the equipment shell 1, completing the formaldehyde removal and performance enhancement curing process.

[0028] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A polyurethane foam photocatalytic formaldehyde removal performance enhancement curing device, comprising a device housing (1), characterized in that: The top surface of the equipment housing (1) is rotatably connected to a sealing cover (2), and a hot air circulation mechanism (3) for hot air circulation heating is fixedly installed inside the sealing cover (2). The hot air circulation mechanism (3) includes a U-shaped mounting plate (301), a partition (302), a motor (303), a fan blade (304), an electric heating tube (305), a U-shaped sealing plate (306), an exhaust port one (307), and an exhaust port two (308). The U-shaped mounting plate (301) is fixedly installed inside the sealing cover (2) by fastening bolts. Two partitions (302) are evenly spaced along the length of the U-shaped mounting plate (301), and the two partitions (302) divide the interior of the U-shaped mounting plate (301) into three independent hot air chambers. At least one motor (303) is fixedly installed on the top surface of the U-shaped mounting plate (301) corresponding to each hot air chamber. The driving end of the motor (303) extends vertically downward to the corresponding... Inside the hot air chamber, a fan blade (304) is fixedly installed on the drive end of the motor (303). Two electric heating tubes (305) for heating air are fixedly installed in each hot air chamber inside the U-shaped mounting plate (301). A U-shaped sealing plate (306) is fixedly installed inside the U-shaped mounting plate (301) below the electric heating tubes (305). The U-shaped sealing plate (306) and the inner wall of the U-shaped mounting plate (301) enclose a hot air circulation channel. Multiple exhaust holes (307) for supplying air to the side of the polyurethane foam are symmetrically opened on the inner side wall of the U-shaped sealing plate (306) along its height direction. Multiple exhaust holes (308) for supplying air to the top of the polyurethane foam are opened on the inner top surface of the U-shaped sealing plate (306) along its length direction.

2. The polyurethane foam photocatalytic formaldehyde removal performance enhancement and curing equipment as described in claim 1, characterized in that: Two feed holes (4) are provided on the front side of the equipment housing (1). Above the two feed holes (4), telescopic cylinders (5) are fixedly installed on the front side of the equipment housing (1) via mounting bases. The telescopic end of the telescopic cylinder (5) is set vertically downward and fixedly installed with a baffle plate (6).

3. The polyurethane foam photocatalytic formaldehyde removal performance enhancement and curing equipment as described in claim 1, characterized in that: A photocatalytic connection housing (7) is fixedly installed on the rear side of the device housing (1), and the interior of the photocatalytic connection housing (7) is connected to the interior of the device housing (1).

4. The polyurethane foam photocatalytic formaldehyde removal performance enhancement and curing equipment as described in claim 1, characterized in that: Two vertically arranged rails (8) are fixedly installed on the front side of the equipment housing (1) for each baffle (6), and the two rails (8) are located on both sides of the feed hole (4). A slider (9) is slidably connected to the front side of each of the rails (8), and the front side of the slider (9) is fixedly connected to the rear side of the baffle (6) by bolts.

5. The polyurethane foam photocatalytic formaldehyde removal performance enhancement and curing equipment as described in claim 1, characterized in that: The top surfaces of the equipment housing (1) and the photocatalytic connection housing (7) are both welded with exhaust pipes (10) for discharging exhaust gas. The end of the exhaust pipe (10) away from the equipment housing (1) and the photocatalytic connection housing (7) is sealed to the air inlet of the external filtration and purification system.

6. The polyurethane foam photocatalytic formaldehyde removal performance enhancement curing equipment as described in claim 1, characterized in that: The device housing (1) and the photocatalytic connection housing (7) are each fixedly installed with support feet (11) at the four corners of the bottom surface for support and leveling.

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