A device and method for deeply sterilizing down feather by nanophotocatalysis and low-temperature plasma

Abstract

This invention relates to a device and method for deep sterilization of down feathers using nano-photocatalysis combined with low-temperature plasma. The device includes a housing, several horizontally arranged transparent tubes within the housing, a light source on the housing for inputting ultraviolet light into the transparent tubes, and a gas supply component on the housing for delivering plasma into the housing. The transparent tubes reflect the ultraviolet light input from the light source into the housing, which, in conjunction with the plasma, sterilizes the falling down feathers. In this invention, the high-energy particles and ozone generated by the plasma first perform deep sterilization and surface activation on the down feathers. Ultraviolet light excites the nano-photocatalyst to generate hydroxyl radicals, further decomposing residual microorganisms and ozone, forming a free radical burst effect, significantly improving sterilization efficiency.

Description

Technical Field

[0001] This invention belongs to the field of down processing technology, specifically relating to a device and method for deep sterilization of down using nano-photocatalysis combined with low-temperature plasma. Background Technology

[0002] Down, as a high-quality insulating filling material, is widely used in clothing, bedding, and other fields. However, down comes from poultry and is prone to carrying bacteria, fungi, and other microorganisms during production and processing. If sterilization is not thorough, it can not only affect product quality but also potentially cause health problems such as allergic reactions.

[0003] Traditional methods for sterilizing down feathers mainly include high-temperature steam sterilization and soaking in chemical disinfectants. High-temperature treatment can easily damage the protein fibers of down feathers, reducing their loft and warmth retention; chemical disinfectants pose a risk of residue and do not meet green and environmental protection requirements. In recent years, low-temperature plasma technology and nano-photocatalysis technology have attracted attention in the field of down feather sterilization due to their low-temperature, high-efficiency, and residue-free characteristics.

[0004] Low-temperature plasma can generate high-energy particles and reactive species such as ozone, possessing strong penetrating power and enabling deep sterilization of down feathers; nano-photocatalysis can generate hydroxyl radicals under ultraviolet light excitation, thoroughly decomposing surface microorganisms and organic pollutants. However, in existing technologies, these two technologies are mostly used independently or simply combined, failing to fully leverage their synergistic effect. Furthermore, existing devices suffer from problems such as down feather accumulation, uneven illumination, and low processing efficiency during the treatment process. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for deep sterilization of down using nano-photocatalysis combined with low-temperature plasma, in order to solve the technical problems mentioned in the background art, such as uneven sterilization of down, low processing efficiency, and easy damage to down quality.

[0006] The present invention achieves the above objectives through the following technical solutions: A nano-photocatalytic synergistic low-temperature plasma deep sterilization device for down includes a box, several transversely arranged transparent tubes disposed in the box, a light source disposed on the box for inputting ultraviolet light into the transparent tubes, and a gas conveying component disposed on the box for conveying plasma into the box. The transparent tube reflects the ultraviolet light input from the light source into the chamber, which, together with the plasma, sterilizes the falling down feathers.

[0007] Preferably, the light source reflects ultraviolet light into the transparent tube through a pipe with lenses on the inner wall. The transparent tube is provided with a number of lenses for reflecting ultraviolet light so that the ultraviolet light can spread throughout the interior of the box.

[0008] Preferably, the transparent tube and the pipe are rotatably connected, and the box body is provided with a drive mechanism for rotating the transparent tube; The drive mechanism includes several rotating wheels rotatably mounted on the housing. One end of each wheel is connected to a transparent tube, and the other end is concentrically connected to a driven wheel. The housing is equipped with a drive module for driving the driven wheel to rotate.

[0009] Preferably, the drive module includes a drive motor fixedly mounted on the housing, and the drive motor drives several driven wheels to rotate via a synchronous belt.

[0010] Preferably, the connection point between each transparent tube and the corresponding rotating wheel is located at a non-center position of the rotating wheel, so that the end of each transparent tube near the rotating wheel rotates with the rotating wheel.

[0011] Preferably, a feeding pool is provided above the box body, and a number of strip-shaped feeding ports are provided at the bottom of the feeding pool. A feeding plate is rotatably installed at the feeding port, and one of the driven wheels drives the feeding plate to open intermittently through a transmission module.

[0012] Preferably, the transmission module includes a horizontal plate fixedly connected to all the feeding plates, a lever fixedly mounted on one of the driven wheels, a slider movably disposed on the feeding pool and fixedly connected to the horizontal plate, and a baffle fixedly disposed on the slider.

[0013] Preferably, the air supply component includes a housing with a top surface, the top surface having a plurality of air inlets, and the top surface having an angle relative to the horizontal plane, so that the down slides off the top surface and is collected.

[0014] A method for deep sterilization of down feathers using nano-photocatalysis combined with low-temperature plasma includes the following steps: S1: The nano-photocatalyst dispersion is uniformly loaded onto the surface of down fibers by impregnation or spraying, and then dried for later use; S2: Allow down loaded with photocatalyst to enter through the opening at the top of the box and fall freely under the influence of gravity; S3: The plasma is transported to the box using the gas conveying device and moves upward to form convective contact with the falling down. At the same time, the light source is activated, and ultraviolet light enters each transparent tube to form a surrounding light field. The ultraviolet light excites the nano-photocatalyst on the surface of the down to generate hydroxyl radical active species. S4: The treated down continues to fall under the influence of gravity and is discharged from the bottom opening of the box, completing the deep sterilization process.

[0015] The beneficial effects of this invention are as follows: 1. In this invention, the high-energy particles and ozone generated by plasma first perform deep sterilization and surface activation on the down feathers. Ultraviolet light excites the nano-photocatalyst to generate hydroxyl radicals, which further decompose residual microorganisms and ozone, forming a free radical burst effect, and greatly improving the sterilization efficiency.

[0016] 2. This invention effectively solves the problems of down accumulation and light dead zones by using the surrounding scattering light of the transparent tube, the rotating anti-pilling design of the transparent tube, and the kneading and dispersing effect generated by the eccentric rotation, ensuring that each down feather is treated evenly.

[0017] 3. This invention achieves uniform down feeding by intermittently controlling the feeding plate; and extends the processing time by using airflow to extend the processing time, thereby improving processing efficiency while ensuring sterilization effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the second perspective structure of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a right-side perspective view of the present invention; Figure 5 This is a schematic diagram showing the positional relationship between the transparent tube and the rotating wheel in this invention.

[0019] In the diagram: 1. Box body; 2. Transparent tube; 3. Light source; 4. Air supply component; 5. Rotary wheel; 6. Driven wheel; 7. Drive motor; 8. Feeding pool; 9. Feeding port; 10. Feeding plate; 11. Horizontal plate; 12. Actuating rod; 13. Sliding block; 14. Baffle; 15. Top surface; 16. Air inlet; 17. Slide groove. Detailed Implementation

[0020] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example 1

[0022] like Figure 1-5As shown, a deep sterilization device for down feathers using nano-photocatalysis combined with low-temperature plasma includes a housing 1, several horizontally arranged transparent tubes 2 disposed within the housing 1, a light source 3 disposed on the housing 1 for inputting ultraviolet light into the transparent tubes 2, and a gas supply component 4 disposed on the housing 1 for delivering plasma into the housing 1. Preferably, the light source 3 is a mercury lamp. The housing 1 has openings at both the top and bottom; down feathers enter the housing 1 through the top opening and are discharged through the bottom opening.

[0023] The transparent tube 2 reflects the ultraviolet light input from the light source 3 into the box 1. Combined with plasma, it sterilizes the falling down feathers (the nano-photocatalyst dispersion is uniformly loaded onto the surface of the down fibers through impregnation or spraying technology). The ozone and hydrogen peroxide generated by the plasma can be further converted into ·OH with stronger oxidizing power on the photocatalytic surface, forming a free radical burst effect of 1+1>2, which greatly improves the efficiency of sterilization and decomposition of organic pollutants.

[0024] In this system, the light source 3 reflects ultraviolet light into each transparent tube 2 through a pipe with lenses on its inner wall. The transparent tube 2 contains several lenses for reflecting ultraviolet light, so that the ultraviolet light is distributed throughout the interior of the box 1. The transparent tube 2 evenly scatters the introduced ultraviolet light along the tube body, forming a surrounding lighting field, effectively reducing shadows and dead angles.

[0025] In this embodiment, the air supply component 4 includes a housing with an upper top surface 15, the upper top surface 15 having a plurality of air inlets 16, and the upper top surface 15 having an angle relative to the horizontal plane, so that the down slides off the upper top surface 15 and is collected.

[0026] It should be noted that plasma is generated using a low-temperature plasma reactor, and then pumped into the housing using an air pump. The plasma enters the chamber 1 through the air inlet 16 and moves upward. The high-energy particles and ozone generated by the plasma first perform deep and rapid sterilization and surface activation on the down feathers. Ultraviolet light excites the photocatalyst to generate free radicals, completing the deep decomposition of residual microorganisms, microbial remains, and excess ozone generated during the plasma stage.

[0027] Meanwhile, the upward-moving gas generated by the air pump slows down the falling speed of the down feathers, prolonging the plasma and photocatalytic time, and further improving the sterilization effect. The airflow velocity is 0.3-0.8 m / s to prevent down feathers from being blown back or suspended and accumulated.

[0028] Example 2

[0029] Based on Example 1, in this example, the transparent tube 2 is rotatably connected to the pipeline, and the box 1 is provided with a drive mechanism for rotating the transparent tube 2.

[0030] Preferably, the drive mechanism includes several rotating wheels 5 rotatably mounted on the housing 1. One end of the rotating wheel 5 is connected to the transparent tube 2, and the other end is concentrically connected to a driven wheel 6. The housing 1 is provided with a drive module for driving the driven wheel 6 to rotate.

[0031] It should be noted that during the fall of down feathers, they may accumulate above the transparent tube 2, which may affect the diffusion of ultraviolet rays in the transparent tube 2. This may cause the down feathers in the accumulated part to receive more irradiation, resulting in over-treatment, while the other down feathers do not receive ultraviolet light and are under-treated.

[0032] By incorporating a drive module, the driven wheel 6 rotates, causing the transparent tube 2 to rotate synchronously. As the transparent tube 2 rotates, it removes the down feathers accumulated on its surface from above, allowing the down to move downwards again, thus reducing the likelihood of down accumulation.

[0033] Preferably, the drive module includes a drive motor 7 fixedly mounted on the housing 1, and the drive motor 7 drives a plurality of driven wheels 6 to rotate via a synchronous belt. The plurality of wheels 5 are grouped together, with multiple horizontally arranged in one group, and the wheels 5 in the same group are kept in contact, so that when one wheel 5 in the same group rotates, all the wheels 5 in the group rotate.

[0034] Only one of the pulleys 5 in the same group needs to be connected to a driven pulley 6. The driven pulley 6 can be driven to rotate by the timing belt, thus reducing the number of driven pulleys 6 used and lowering costs. To ensure the normal rotation of the driven pulleys 6, the size of each driven pulley 6 is adjusted to prevent slippage during operation. If necessary, auxiliary pulleys are added next to each driven pulley 6 to ensure that the timing belt does not disengage from the driven pulley 6.

[0035] Furthermore, the connection point between each transparent tube 2 and the corresponding rotating wheel 5 is located at a non-center position of the rotating wheel 5, so that the end of each transparent tube 2 near the rotating wheel 5 rotates with the rotating wheel 5.

[0036] It should be noted that the connection point between the transparent tube 2 and the rotating wheel 5 is located at a non-center position of the rotating wheel 5. During the rotation of the rotating wheel 5, the end of the transparent tube 2 away from the light source 3 rotates, causing the transparent tube 2 to move up and down. During the staggered up and down movement of adjacent transparent tubes 2, the distance between them changes. When adjacent transparent tubes 2 come closer to each other, they can rub and disperse the falling down, so that the falling down can receive more uniform ultraviolet light irradiation.

[0037] Example 3

[0038] Furthermore, a feeding pool 8 is provided above the box body 1, and several strip-shaped feeding ports 9 are provided at the bottom of the feeding pool 8. A feeding plate 10 is rotatably installed at the feeding port 9, and one of the driven wheels 6 drives the feeding plate 10 to open intermittently through the transmission module.

[0039] Preferably, the transmission module in this embodiment includes a horizontal plate 11 fixedly connected to all the feed plates 10, a lever 12 fixedly mounted on one of the driven wheels 6, a slider 13 movably mounted on the feed pool 8 and fixedly connected to the horizontal plate 11, and a baffle 14 fixedly mounted on the slider 13. The feed pool 8 is provided with a groove 17, and the slider 13 is movably mounted in the groove 17. The lever 12 rotates synchronously with the driven wheel 6. When the end of the lever 12 contacts the baffle 14, it drives the baffle 14 to move upward, causing the slider 13 to be lifted upward. When the slider 13 moves upward, it drives the horizontal plate 11 connected to it to move upward, causing the end of the feed plate 10 to be lifted, the feed port 9 to open, and the down can enter the box 1.

[0040] When the lever 12 disengages from the baffle 14, the end of the feed plate 10 moves downward under its own weight, causing the feed port 9 to be blocked again, preventing the down from entering the box 1.

[0041] By intermittently opening the feed plate 10, down can enter the box 1 at a constant speed. Furthermore, by matching the dimensions of the lever 12 and the slider 13, the amount of down processed can be controlled to ensure maximum processing efficiency.

[0042] Example 4

[0043] A method for deep sterilization of down feathers using nano-photocatalysis combined with low-temperature plasma includes the following steps: S1: The nano-photocatalyst dispersion is uniformly loaded onto the surface of down fibers by impregnation or spraying, and then dried for later use; S2: Allow the down loaded with photocatalyst to enter through the opening at the top of the box 1 and fall freely under the action of gravity; S3: The plasma is transported to the box by the gas supply component 4 and moves upward to form convective contact with the falling down. At the same time, the light source 3 is activated and ultraviolet light enters each transparent tube 2 to form a surrounding light field. The ultraviolet light excites the nano-photocatalyst on the surface of the down to produce hydroxyl radical active species. S4: The treated down continues to fall under the influence of gravity and is discharged from the bottom opening of the box 1, completing the deep sterilization process.

[0044] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A device for deep sterilization of down feathers using nano-photocatalysis combined with low-temperature plasma, characterized in that, Includes a box (1), several transversely arranged transparent tubes (2) inside the box (1), a light source (3) on the box (1) for inputting ultraviolet light into the transparent tubes (2), and a gas conveying component (4) on the box (1) for conveying plasma into the box (1). The transparent tube (2) reflects the ultraviolet light input from the light source (3) into the box (1), and works with plasma to sterilize the falling down feathers.

2. The down deep sterilization device based on nano-photocatalysis and low-temperature plasma according to claim 1, characterized in that, The light source (3) reflects ultraviolet light into the transparent tube (2) through a pipe with lenses on the inner wall. The transparent tube (2) is provided with several lenses for reflecting ultraviolet light so that the ultraviolet light can spread throughout the interior of the box (1).

3. The down deep sterilization device based on nano-photocatalysis and low-temperature plasma according to claim 2, characterized in that, The transparent tube (2) is rotatably connected to the pipeline, and the box (1) is provided with a drive mechanism for driving the transparent tube (2) to rotate; The drive mechanism includes several rotating wheels (5) rotatably mounted on the housing (1). One end of the rotating wheel (5) is connected to the transparent tube (2), and the other end is concentrically connected to the driven wheel (6). The housing (1) is provided with a drive module for driving the driven wheel (6) to rotate.

4. The down deep sterilization device based on nano-photocatalysis and low-temperature plasma according to claim 3, characterized in that, The drive module includes a drive motor (7) fixed on the housing (1), and the drive motor (7) drives several driven wheels (6) to rotate via a synchronous belt.

5. The down deep sterilization device based on nano-photocatalysis and low-temperature plasma according to claim 4, characterized in that, The connection point between each transparent tube (2) and the corresponding rotating wheel (5) is located at a non-center position of the rotating wheel (5), so that the end of each transparent tube (2) near the rotating wheel (5) rotates with the rotating wheel (5).

6. The down deep sterilization device based on nano-photocatalysis and low-temperature plasma according to claim 5, characterized in that, The box (1) is provided with a feeding pool (8) above it. The bottom of the feeding pool (8) is provided with several strip-shaped feeding ports (9). A feeding plate (10) is rotatably installed at the feeding port (9). One of the driven wheels (6) drives the feeding plate (10) to open intermittently through the transmission module.

7. The down deep sterilization device based on nano-photocatalysis and low-temperature plasma according to claim 6, characterized in that, The transmission module includes a horizontal plate (11) fixedly connected to all the feed plates (10), a lever (12) fixedly installed on one of the driven wheels (6), a slider (13) movably set on the feed pool (8) and fixedly connected to the horizontal plate (11), and a baffle (14) fixedly set on the slider (13).

8. The down deep sterilization device based on nano-photocatalysis and low-temperature plasma according to claim 7, characterized in that, The air supply component (4) includes a housing with an upper top surface (15), which has a plurality of air inlets (16) and an angle relative to the horizontal plane, so that down feathers slide off the upper top surface (15) and are collected.

9. A method for sterilizing down using a nano-photocatalytic synergistic low-temperature plasma deep sterilization device as described in any one of claims 1-8, characterized in that, Includes the following steps: S1: The nano-photocatalyst dispersion is uniformly loaded onto the surface of down fibers by impregnation or spraying, and then dried for later use; S2: Allow the down loaded with photocatalyst to enter through the opening at the top of the box (1) and fall freely under the action of gravity; S3: The plasma is transported to the box using the gas delivery device (4) and moves upward to form a convective contact with the falling down. At the same time, the light source (3) is activated, and ultraviolet light enters each transparent tube (2) to form a surrounding light field. The ultraviolet light excites the nano-photocatalyst on the surface of the down to produce hydroxyl radical active species. S4: The treated down continues to fall under the action of gravity and is discharged from the bottom opening of the box (1), completing the deep sterilization treatment.

Images