Down feather disinfection device based on low-temperature plasma

Abstract

The invention relates to a down feather disinfection device based on low-temperature plasma. The device comprises an annular pipeline provided with a discharging port, a feeding port and an air inlet, a plurality of movable plugs attached to an inner cavity of the annular pipeline are movably installed in the annular pipeline, and a driving mechanism used for driving the movable plugs to move in the inner cavity of the annular pipeline is arranged on the annular pipeline. The down feather is borne through the annular moving plug, the space of an inner cavity of the moving plug is small, the inner cavity can be fully filled with low-temperature plasmas, and primary full contact between the down feather and the plasmas is guaranteed; down feather is in a floating state in cooperation with reverse plasma airflow, down feather agglomeration is further broken through the rotary lifting of a third sealing plate and the scattering effect of a stirring piece, the contact area and contact time of down feather and plasma are greatly increased, and the problem of uneven disinfection is thoroughly solved.

Description

Technical Field

[0001] This invention belongs to the field of down disinfection technology, specifically relating to a down disinfection device based on low-temperature plasma. Background Technology

[0002] Down, as a high-quality insulating material, is widely used in clothing, bedding, and other fields. Because down comes from poultry feathers, its surface is prone to harboring harmful microorganisms such as bacteria, viruses, and parasite eggs. Therefore, disinfection is a crucial step in the down processing.

[0003] Currently, common methods for disinfecting down products on the market mainly include chemical disinfection and high-temperature disinfection. Low-temperature plasma disinfection technology, as a novel green disinfection technology, generates various active substances, including electrons, ions, active free radicals, and ultraviolet light, through gas discharge. These substances destroy the structure of microorganisms through comprehensive physicochemical actions, thereby achieving highly efficient sterilization. This process is carried out under near-room temperature conditions, theoretically avoiding heat damage. It has advantages such as high disinfection efficiency, no chemical residue, and minimal damage to the disinfected items, and is gradually gaining attention in the industry.

[0004] Existing low-temperature plasma-based disinfection devices, when applied to down disinfection, typically involve feeding down into a sealed reaction chamber via an airflow, evacuating the chamber or introducing a working gas, and then starting the plasma equipment for timed treatment. After treatment, the down is removed. However, achieving uniform dispersion of the down during the process is difficult, and the plasma distribution may be uneven, resulting in some down failing to effectively contact the plasma, thus affecting the disinfection effect. Summary of the Invention

[0005] The purpose of this invention is to provide a down disinfection device based on low-temperature plasma in order to solve the problems mentioned in the background art.

[0006] The present invention achieves the above objectives through the following technical solutions: A down disinfection device based on low-temperature plasma includes an annular pipe with a discharge port, a loading port and an air inlet. Several movable plugs that fit into the inner cavity of the annular pipe are movably installed inside the annular pipe. The annular pipe is provided with a drive mechanism for moving the movable plugs within the inner cavity of the annular pipe. The movable plug is ring-shaped, and a No. 1 sealing plate is fixedly provided at one end of the movable plug. The No. 1 sealing plate is provided with a plurality of No. 1 vent holes. A plasma generator is connected to the air inlet. The plasma generator is used to inject low-temperature plasma into the inner cavity of a moving plug carrying down that continuously passes through the air inlet to disinfect the down.

[0007] Preferably, a second sealing plate is rotatably mounted on the movable plug, and the second sealing plate is provided with a second vent hole corresponding to the first vent hole; The inner wall of the annular pipe is provided with a first guide groove, and the second sealing plate is provided with a slider located in the first guide groove. Under the guidance of the first guide groove, the slider drives the second sealing plate to rotate so that the second sealing plate can block the first vent hole on the first sealing plate.

[0008] Preferably, the annular pipe is further provided with a No. 1 hole, a No. 2 hole, and a No. 3 hole. Each of the No. 1 hole, the No. 2 hole, and the No. 3 hole is connected to a suction device for extracting gas from the inner cavity of the moving plug. The No. 3 hole is located near the discharge port of the annular pipe and is used to recover harmful gases from the moving plug. The No. 1 hole and the No. 2 hole are located near the feed port of the annular pipe and are used for vacuum treatment of the moving plug and forming a gas circuit with the air inlet, respectively.

[0009] Preferably, the second sealing plate is concentrically fixedly connected to a rotating shaft that passes through the first sealing plate, and a third sealing plate is concentrically sleeved on the rotating shaft. The third sealing plate is provided with a plurality of third vent holes corresponding to the first vent hole. The inner wall of the movable plug is provided with two No. 2 guide grooves. The outer ring of the No. 3 sealing plate is fixedly connected with two limiting blocks located in the No. 2 guide grooves. When the limiting blocks move in the No. 2 guide grooves, they drive the No. 3 sealing plate to move in the inner cavity of the movable plug, thereby driving the down feathers to move. The cross-section of the rotating shaft is non-circular.

[0010] Preferably, the second guide groove is spiral-shaped, and the lead angle of the second guide groove is greater than 20°.

[0011] Preferably, the rotating shaft is provided with an external thread section, and a rotating component that is threadedly connected to the external thread section is sleeved on the rotating shaft. A plurality of paddles for dispersing down are fixedly connected to the outer ring of the rotating component. The No. 3 sealing plate is equipped with two push rods for driving the rotating parts to move.

[0012] Preferably, the rotating shaft is concentrically fixed with two collars located at both ends of the external thread for limiting the stroke of the rotating component, so that the rotating component will not come into contact with the No. 3 sealing plate.

[0013] Preferably, the driving mechanism includes a transmission ring located inside the annular pipe and fixedly connected to a plurality of movable plugs, a reducer fixedly mounted on the annular pipe, a drive motor connected to the reducer, and a gear mounted on the output shaft of the drive motor. The transmission ring has a plurality of tooth grooves along its circumference, and the gear drives the transmission ring to rotate by meshing with the tooth grooves.

[0014] The beneficial effects of this invention are as follows: This invention uses a ring-shaped movable plug to carry down feathers. The small internal space of the movable plug allows low-temperature plasma to fully fill the cavity, ensuring sufficient initial contact between the down feathers and the plasma. Simultaneously, the rotation of the second sealing plate is controlled by the first guide groove to achieve sealing and vacuuming of the movable plug's internal cavity. When the first vent is opened, the plasma rapidly rushes into the internal cavity under the pressure difference, causing the down feathers to disperse extremely. Combined with the reverse plasma airflow that keeps the down feathers in a floating state, and the rotation and lifting of the third sealing plate and the dispersing effect of the paddle, the down feathers are further broken up, significantly increasing the contact area and contact time between the down feathers and the plasma, thus completely solving the problem of uneven disinfection.

[0015] This invention uses a drive mechanism to move multiple movable plugs continuously along an annular pipe. The notches at the ends of the movable plugs correspond to the feed and discharge ports, enabling automatic and continuous feeding and unloading of down. The precise control of the rotation of the No. 2 sealing plate by the No. 1 guide groove ensures the orderly connection of processes such as feeding, vacuuming, sterilization, exhausting, and unloading. At the same time, the movable plugs can clean the filter screen surface during movement, preventing filter screen blockage and ensuring long-term stable operation of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a front view of the invention when partially cut open; Figure 4 This is a schematic diagram showing the positional relationship between the movable plug and the lever in this invention; Figure 5 This is a schematic diagram showing the positional relationship between the No. 1 sealing plate and the No. 3 sealing plate in this invention; Figure 6 This is a schematic diagram showing the positional relationship between the No. 1 sealing plate and the movable plug in this invention.

[0017] In the diagram: 1. Feed port; 2. Feed port; 3. Air inlet; 4. Moving plug; 5. No. 1 sealing plate; 6. No. 1 vent hole; 7. No. 2 sealing plate; 8. No. 2 vent hole; 9. Sliding block; 10. No. 1 hole; 11. No. 2 hole; 12. No. 3 hole; 13. Rotating shaft; 14. No. 3 sealing plate; 15. No. 3 vent hole; 16. No. 2 guide groove; 17. External thread section; 18. Rotating component; 19. Paddle; 20. Push rod; 21. Collar; 22. Transmission ring; 23. Reducer; 24. Drive motor; 25. Gear; 26. Gear groove; 27. Notch; 28. Annular pipe. Detailed Implementation

[0018] 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.

[0019] Example 1 like Figure 1-6 As shown, a down sterilization device based on low-temperature plasma includes an annular pipe 28 with a discharge port 1, a loading port 2, and an air inlet 3. The discharge port 1 is located on the outer ring of the annular pipe 28 and at the lower part of the annular pipe 28 (analogous to the 6 o'clock position on a clock). The loading port 2 is located on the inner ring of the annular pipe 28 and is also located at the lower part of the annular pipe 28 (analogous to the 4 or 5 o'clock position on a clock).

[0020] Several movable plugs 4 are movably installed inside the annular pipe 28, fitting snugly against its inner cavity. The inner cavity of the annular pipe 28 is coated with a coating to improve its smoothness and reduce the friction experienced by the movable plugs 4 during movement. The movable plugs 4 fit tightly into the inner cavity of the annular pipe 28. The movable plugs 4 are annular in shape, and one end of the movable plug 4 is fixedly provided with a No. 1 sealing plate 5, which has several No. 1 vent holes 6. The other end of the movable plug 4 has two notches 27, whose directions correspond to the feed port 2 and the discharge port 1, respectively. When the movable plug 4 moves to the feed port 2, the down falls from the notches 27 into the inner cavity of the movable plug 4. Because the annular pipe 28 is on the outer ring at the feed port 2, the down will not leak out and will then enter the interior of the annular pipe 28 along with the movable plug 4. When the movable plug 4 moves to the discharge port 1, the down falls from the notches 27 through the discharge port 1 under its own gravity, emptying the inner cavity of the movable plug 4.

[0021] The annular pipe 28 is equipped with a drive mechanism for moving the movable plug 4 within the annular pipe 28. Preferably, the drive mechanism includes a transmission ring 22 located inside the annular pipe 28 and fixedly connected to several movable plugs 4, a reducer 23 fixedly mounted on the annular pipe 28, a drive motor 24 connected to the reducer 23, and a gear 25 mounted on the output shaft of the drive motor 24. The transmission ring 22 has several toothed grooves 26 along its circumference. The gear 25 drives the transmission ring 22 to rotate by meshing with the toothed grooves 26. Through the cooperation of the reducer 23 and the drive motor 24, and the cooperation of the gear 25 and the toothed grooves 26, the rotational speed of the transmission ring 22 is controlled, thereby controlling the moving speed of the movable plug 4.

[0022] A plasma generator is connected to the air inlet 3. A plasma generator (existing technology) can be used. The plasma generator is used to inject low-temperature plasma into the inner cavity of the moving plug 4, which continuously passes through the air inlet 3 and carries down, to disinfect the down.

[0023] It should be noted that the annular pipe 28 is fixedly installed on the ground, and a feeding funnel is installed at the feeding port 2. When the moving plug 4 moves to the feeding funnel, the material is automatically fed.

[0024] As the down feathers move within the annular pipe 28 along with the movable plug 4, they pass through the air inlet 3. The low-temperature plasma introduced through the air inlet 3 enters the inner cavity of the movable plug 4, where it comes into full contact with the down feathers. Due to the small size of the movable plug 4, the low-temperature plasma can fill the entire inner cavity of the movable plug 4, ensuring uniform disinfection of the down feathers and significantly improving the disinfection effect.

[0025] Furthermore, a second sealing plate 7 is rotatably installed on the first sealing plate 5. The second sealing plate 7 is located outside the movable plug 4, and the second sealing plate 7 is provided with a second vent 8 corresponding to the first vent 6.

[0026] The inner wall of the annular pipe 28 is provided with a first guide groove, and the second sealing plate 7 is provided with a slider 9 located in the first guide groove. Under the guidance of the first guide groove, the slider 9 drives the second sealing plate 7 to rotate so that the second sealing plate 7 can block the first vent 6 on the first sealing plate 5.

[0027] It should be noted that before entering the annular pipe 28, the second vent hole 8 on the second sealing plate 7 is connected to the first vent hole 6 on the first sealing plate 5. When it is about to move to the discharge port 1 (passing the air inlet 3), the first guide groove changes direction. The slider 9 changes direction synchronously in the first guide groove and drives the second sealing plate 7 to rotate. After the second sealing plate 7 rotates, the second vent hole 8 and the first vent hole 6 are misaligned, thus preventing air from passing through the first vent hole 6. After the first vent hole 6 is blocked, the annular pipe 28 is approximately sealed in the direction of the discharge port 1.

[0028] When the moving plug 4 moves to the bottom of the annular pipe 28 and the first vent 6 is blocked, the air inlet 3 is set at the bottom of the annular pipe 28 (analogous to the 7 or 8 o'clock position of a clock). At this time, the plasma injection speed can be appropriately increased so that the plasma gas flow moves from the bottom of the annular pipe 28 in the opposite direction of the down conveying until it flows out from the feed port 2 of the annular pipe 28.

[0029] During the reverse flow of the plasma gas flow, the down in the moving plug 4 is lifted up. Especially when the down is in the downward movement segment (analogous to the 11 o'clock to 8 o'clock position of a clock), the plasma gas flow blows the down in the moving plug 4, causing the down to float in the inner cavity of the moving plug 4. This directly increases the degree of contact between the plasma gas flow and the down, making the contact between the plasma gas flow and the down more uniform.

[0030] Furthermore, the annular pipe 28 is also provided with three air extraction holes, namely hole 10, hole 11, and hole 12. Hole 10 is located at the end of the annular pipe 28 near the feed port 2 (analogous to the 2 or 3 o'clock position on a clock), hole 11 is located next to the aforementioned air extraction hole (analogous to the 12 or 1 o'clock position on a clock), and hole 12 is located at the end of the annular pipe 28 near the discharge port 1 (located between the air inlet 3 and the discharge port 1). Each air extraction hole is connected to a suction device for extracting gas from the inner cavity of the moving plug 4. A filter screen is provided between the air extraction hole and the suction device to prevent down from being drawn away. During the movement of the moving plug 4, the down on the surface of the filter screen will be cleaned, and the filter screen will not be clogged. Preferably, the air extraction device can be an air compressor.

[0031] It should be noted that the air-filled inner cavity of the movable plug 4 entering the annular pipe 28 will affect the sterilization effect of the plasma. By designing the first guide groove, the second sealing plate 7 rotates immediately upon entering the annular pipe 28, thus sealing both ends of the annular pipe 28, and the down feathers actually move within a sealed cavity. The suction device at the first hole 10 removes the gas from the inner cavity of the movable plug 4, placing the movable plug 4 in a low-pressure or vacuum state. When the low-pressure movable plug 4 passes the working area of ​​the first hole 10, the second sealing plate 7 rotates under the guidance of the first guide groove, causing the first vent 6 to open. At this time, a gas flow containing a large amount of plasma rapidly enters the inner cavity of the low-pressure movable plug 4, sterilizing the down feathers within. Driven by the strong gas flow, the down feathers in the movable plug 4 are in a highly dispersed state, further increasing the contact between the plasma and the down feathers.

[0032] The plasma gas flow enters the annular pipe 28 through the air inlet 3, and is extracted from the second hole 11 in the opposite direction of the down movement to avoid environmental pollution.

[0033] The suction device at hole 12 absorbs the gas inside the moving plug 4, thus preventing environmental pollution.

[0034] Furthermore, the second sealing plate 7 is concentrically fixedly connected to a rotating shaft 13 that passes through the first sealing plate 5. The third sealing plate 14 is concentrically sleeved on the rotating shaft 13. The third sealing plate 14 is provided with several third vent holes 15 corresponding to the first vent hole 6.

[0035] The inner wall of the movable plug 4 is provided with two second guide grooves 16. The outer ring of the third sealing plate 14 is fixedly connected with two limiting blocks located in the second guide grooves 16. When the limiting blocks move in the second guide grooves 16, they drive the third sealing plate 14 to move in the inner cavity of the movable plug 4, thereby driving the down feathers to move.

[0036] The cross-section of the rotating shaft 13 is non-circular, and can be rectangular or elliptical. During the rotation of the rotating shaft 13, it drives the No. 3 sealing plate 14 to rotate synchronously, and the No. 3 sealing plate 14 can move along the axial direction of the rotating shaft 13.

[0037] It should be noted that the design of the first guide groove allows the second sealing plate 7 to intermittently block the first vent 6. Due to the continuous air intake at the second hole 11, the moving plug 4 is constantly under negative pressure during its movement. When the first vent 6 is unobstructed, airflow enters the moving plug 4, causing the down comforter to disperse, which helps to improve the uniform disinfection effect of the down.

[0038] Simultaneously, when the second sealing plate 7 rotates, it drives the rotating shaft 13 to rotate, causing the third sealing plate 14 to rotate synchronously. The limiting block on the third sealing plate 14 moves within the second guide groove 16, causing the third sealing plate 14 to move away from the first sealing plate 5. When the third sealing plate 14 moves away from the first sealing plate 5, it can lift up heavy down feathers.

[0039] When the second sealing plate 7 rotates, the third sealing plate 14 rotates synchronously. The heavy down feathers float in the moving plug 4 under the action of airflow, and the plasma can disinfect the floating down feathers evenly.

[0040] At the same time, the rotation of the No. 3 sealing plate 14 causes the No. 3 ventilation hole 15 to rotate synchronously. The No. 3 ventilation hole 15 drives the airflow to rotate, further reducing the cleaning dead corners and allowing the plasma to fully contact the down.

[0041] Preferably, the second guide groove 16 is spiral-shaped, and the lead angle of the second guide groove 16 is greater than 20°. The larger lead angle can ensure that the third sealing plate 14 can rotate and rise normally, and can have a large range of movement.

[0042] In the above embodiments, during material feeding, the No. 1 guide groove can drive the No. 2 sealing plate 7 and the No. 3 sealing plate 14 to rotate, causing the No. 3 sealing plate 14 to move away from the No. 1 sealing plate 5, thereby ejecting the down from the moving plug 4, accelerating the feeding speed, and making the feeding more thorough. During material loading, the amount of material loaded can be controlled by controlling the distance between the No. 3 sealing plate 14 and the No. 1 sealing plate 5, avoiding excessive material loading that would reduce the disinfection effect.

[0043] Furthermore, the rotating shaft 13 is provided with an external thread section 17, and a rotating component 18, threadedly connected to the external thread section 17, is sleeved on the rotating shaft 13. Several paddles 19 for dispersing down are fixedly connected to the outer ring of the rotating component 18. The third sealing plate 14 is provided with two push rods 20 for moving the rotating component 18. During the movement of the third sealing plate 14, the push rods 20 contact the rotating component 18, causing the rotating component 18 to move. During the movement of the rotating component 18, the paddles 19 rotate, dispersing the down and reducing the likelihood of down clumping. When the third sealing plate 14 moves away from the rotating component 18, under the action of gravity, the rotating component 18 automatically moves closer to the third sealing plate 14, simultaneously causing the paddles 19 to rotate.

[0044] Similar to the second guide groove 16 mentioned above, the external thread section 17 here has a larger lead angle, ensuring that the rotating part 18 can fall smoothly and automatically. Preferably, the rotating part 18 can be a nut to form a ball screw pair to reduce friction.

[0045] Two concentrically fixed collars 21 located at both ends of the external thread are provided on the rotating shaft 13 to limit the stroke of the rotating part 18, so that the rotating part 18 will not come into contact with the No. 3 sealing plate 14, and to avoid the down being squeezed during the contact between the rotating part 18 and the paddle 19 and the No. 3 sealing plate 14, so that it cannot be smoothly detached during feeding.

[0046] 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 low-temperature plasma-based down disinfection device, characterized by, The utility model provides a kind of device for disinfecting down feather, including annular pipeline (28) with down outlet (1), upper inlet (2) and air inlet hole (3), several mobile plugs (4) are movably installed in the inner cavity of annular pipeline (28) and are attached to it, and driving mechanism for moving mobile plug (4) in the inner cavity of annular pipeline (28) is equipped on annular pipeline (28). The mobile plug (4) is annular, and one end of the mobile plug (4) is fixedly provided with a first sealing plate (5), and the first sealing plate (5) is provided with a plurality of first air holes (6). The air inlet hole (3) is connected with a plasma generating device, and the plasma generating device is used for injecting low-temperature plasma into the inner cavity of the mobile plug (4) continuously passing through the air inlet hole (3) and carrying down feather to disinfect the down feather.

2. A low temperature plasma based down sanitization device as claimed in claim 1, wherein, A second sealing plate (7) is rotatably installed on the mobile plug (4), and the second sealing plate (7) is provided with a second air hole (8) corresponding to the first air hole (6). The inner wall of the annular pipeline (28) is provided with a first guide groove, and the second sealing plate (7) is provided with a sliding block (9) located in the first guide groove, and the sliding block (9) drives the second sealing plate (7) to rotate under the guidance of the first guide groove to block the first air hole (6) on the first sealing plate (5).

3. A low temperature plasma based down sanitization device as claimed in claim 2, wherein, The annular pipeline (28) is also provided with a first hole (10), a second hole (11) and a third hole (12), and the first hole (10), the second hole (11) and the third hole (12) are connected with a gas suction device for sucking gas in the inner cavity of the mobile plug (4), the third hole (12) is located near the down outlet (1) of the annular pipeline (28), and is used for recycling harmful gas in the mobile plug (4), the first hole (10) and the second hole (11) are located near the upper inlet (2) of the annular pipeline (28), and are used for vacuum treatment of the mobile plug (4) and forming a gas loop with the air inlet hole (3), respectively.

4. A low temperature plasma based down sanitization device as claimed in claim 3, wherein, The second sealing plate (7) is fixedly connected with a rotating shaft (13) penetrating through the first sealing plate (5), the rotating shaft (13) is concentrically sleeved with a third sealing plate (14), and the third sealing plate (14) is provided with a plurality of third air holes (15) corresponding to the first air holes (6). The inner wall of the mobile plug (4) is provided with two second guide grooves (16), and the outer circle of the third sealing plate (14) is fixedly connected with two limiting blocks located in the second guide grooves (16), and the limiting blocks move in the second guide grooves (16) to drive the third sealing plate (14) to move in the inner cavity of the mobile plug (4) to drive the down feather to move. The cross section of the rotating shaft (13) is non-circular.

5. A low temperature plasma based down sanitization device as claimed in claim 4, wherein, The second guide groove (16) is spiral, and the lead angle of the second guide groove (16) is greater than 20°.

6. A low temperature plasma based down sanitization device as claimed in claim 5, wherein, The rotating shaft (13) is provided with an external thread segment (17), the rotating shaft (13) is sleeved with a rotating member (18) threadedly connected with the external thread segment (17), and the outer circle of the rotating member (18) is fixedly connected with a plurality of poking pieces (19) for dispersing down feather. The third sealing plate (14) is provided with two top rods (20) for driving the rotating member (18) to move.

7. A low temperature plasma based down sanitization device as claimed in claim 6, wherein, The rotating shaft (13) is fixed with two rings (21) at both ends of the outer thread, which are used to limit the stroke of the rotating part (18), so that the rotating part (18) does not contact the third sealing plate (14).

8. A low temperature plasma based down sanitization device as claimed in claim 1, wherein, The driving mechanism comprises a transmission ring (22) fixedly connected with the plurality of moving plugs (4) in the annular pipeline (28), a speed reducer (23) fixedly arranged on the annular pipeline (28), a driving motor (24) connected with the speed reducer (23), and a gear (25) arranged on an output shaft of the driving motor (24). A plurality of tooth grooves (26) are arranged on the transmission ring (22) in the circumferential direction. The gear (25) drives the transmission ring (22) to rotate by meshing with the tooth grooves (26).

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