Down feather filtering equipment for down jacket filling

Abstract

The application relates to the field of down filtering equipment, in particular to down filtering equipment for down-filled down jackets. The equipment comprises a shell, a feeding port and a discharging port arranged on the shell, a screen fixed to the inside of the shell, the lower end of the screen being located below the feeding port, a plurality of fan blades distributed at equal intervals arranged in the shell, a driving module arranged on the shell and used for driving the plurality of fan blades to synchronously rotate, a plurality of groups of fixing blocks arranged in the shell, each group of fixing blocks comprising two fixing blocks symmetrically distributed, and a magnet fixed to each group of fixing blocks. The magnet is arranged in the shell and spaced apart from the fan blades, so that the equipment can actively adsorb metal impurities such as iron wires and iron scraps mixed in the down while conveying and scattering the down under negative pressure, the probability of the metal impurities penetrating the filter material and entering the subsequent process is reduced, and the smooth progress of the subsequent process is ensured.

Description

Technical Field

[0001] This invention relates to the field of down filtration equipment, and more particularly to a down filtration device for filling down jackets. Background Technology

[0002] Down is the core filling material for down garments and home textiles. Its processing involves multiple steps, including washing, drying, feather separation and impurity removal, filtration and conveying, and quantitative filling. Down filtration equipment is the core equipment for down purification and material transfer between processes. It can separate impurities such as dust, fine down debris, and feather shafts from the down, playing a crucial role in ensuring the cleanliness of finished products, improving production automation, and controlling dust pollution in the workshop.

[0003] Most existing down filtration equipment adopts an integrated structure of "negative pressure conveying + filter media screening". A negative pressure environment is created by a negative pressure fan, drawing down into the equipment with the airflow. Down and large impurities are trapped by filter elements such as filter screens and filter bags, while clean air is discharged by the fan. The collected down is then discharged to the next process via an unloading mechanism. Some equipment is equipped with a pulse backflushing cleaning mechanism to periodically clean the dust from the filter media surface, alleviating clogging and extending continuous operating time.

[0004] However, existing equipment generally lacks the function of removing metal with magnets, exhibiting significant technical defects: First, metal impurities have multiple entry paths, making physical screening ineffective in intercepting them. Foreign impurities such as iron wire and nails are easily introduced during raw material acquisition and transfer. During production, wear and tear on equipment and loose fasteners also enter the material flow, and fine metal fragments and wires can penetrate the filter material and flow to subsequent processes. Second, it exacerbates equipment wear and increases the risk of failure. Metal impurities carried by high-speed airflow can easily scrape and puncture the filter material, causing filtration failure and raw material loss; they can also impact and wear down the fan impeller, disrupting dynamic balance, causing abnormal vibration or even shutdown, and easily leading to blockage and sealing failure of pipelines and unloading valves. Third, it poses dual hazards to fire safety and quality. Metal collisions can easily generate sparks, igniting down and dust, inducing fire risks; contamination of finished products can damage filling equipment and even harm consumers, damaging product quality and brand reputation. Fourth, external independent magnetic separation solutions have poor adaptability. Adding magnetic separation equipment is costly and takes up a lot of space. It can easily damage the airtightness of the negative pressure system, causing down to escape. In addition, it lacks coordination with the filtration system, has limited efficiency except for metals, and is difficult to adapt to the needs of continuous and closed production. Summary of the Invention

[0005] In order to overcome the shortcomings mentioned in the background art, the present invention provides a down filtration device for filling down jackets.

[0006] The technical solution is as follows: A down filtering device for down filling in down jackets includes a shell, an inlet and an outlet on the shell, a screen fixed inside the shell with its lower end below the inlet, a plurality of fan blades evenly distributed inside the shell, a drive module for driving the plurality of fan blades to rotate synchronously on the shell, and a plurality of sets of fixing blocks inside the shell, each set including two symmetrically distributed fixing blocks, each set of fixing blocks being fixedly connected to a magnet, and all the magnets being located between the outlet and the screen.

[0007] Preferably, the magnet consists of a rectangular portion and symmetrically distributed guide portions, and the minimum distance between each magnet and the corresponding fan blade is equal.

[0008] Preferably, the magnet is fitted with a mounting shell on its outer side, the mounting shell is fixedly connected to the corresponding fixing block, and a connecting pipe is fixedly connected to and connected to one side of the mounting shell, the connecting pipe passing through the corresponding fixing block.

[0009] Preferably, the mounting shell consists of a flexible portion and symmetrically distributed rigid portions, wherein the flexible portion of the mounting shell is made of an elastically deformable material.

[0010] Preferably, the outer shell is provided with equidistantly distributed static eliminators, and the projections of all the static eliminators on the horizontal plane are staggered with the projections of all the magnets on the horizontal plane. The static eliminators are located between the magnets and the discharge port. Symmetrically distributed positioning blocks are fixed inside the outer shell, and the positioning blocks are in contact with the corresponding static eliminators. The positioning blocks are provided with symmetrically distributed inclined surfaces.

[0011] Preferably, the device further includes a guide shell, which is fixedly connected to the inside of the outer shell and located between the magnet and the static eliminator. The guide shell has a matrix of inclined surfaces, and a fixed tube is fixedly connected to the upper side of the guide shell. The guide shell has a through hole communicating with the fixed tube. A movable tube is slidably connected to the fixed tube. A telescopic rod is fixedly connected to the guide shell, and the telescopic end of the telescopic rod is fixedly connected to the movable tube. A helical blade is fixedly connected inside the fixed tube, and the helical blade is slidably connected to the movable tube.

[0012] Preferably, the movable tube is sleeved on the outside of the fixed tube, and the outer diameter of the movable tube is smaller than the diameter of the inscribed circle of the outer shell. When the movable tube is not moving, the height of the upper side of the spiral blade is not lower than the height of the upper side of the movable tube.

[0013] Preferably, the outer shell is detachably connected to symmetrically distributed sealing plates, and the sealing plates are detachably connected to a plurality of spacer plates. The outer shell is slidably connected to the fixing blocks. The spacer plates are used to block the gaps between two adjacent fixing blocks. The connecting pipe passes through the corresponding sealing plate and is fixedly connected to it. The outer shell is rotatably connected to a matrix of connecting shafts. A reset torsion spring is provided between the connecting shaft and the outer shell. A shielding member is wound on the connecting shaft. The shielding member passes through the outer shell and is fixedly connected to the corresponding magnet.

[0014] Preferably, the shielding member is made of a flexible material, the width of the shielding member is the same as the width of the inner side of the housing, and the connecting shaft is located below the magnet.

[0015] Preferably, the outer casing is rotatably connected to a connecting post and a positioning post. A drive module on the outer casing is used to drive the connecting post to rotate. The connecting post and the positioning post are fixedly connected to a fixed shaft. The fan blades are slidably connected to the fixed shaft. The connecting post and the positioning post are rotatably connected to a first rotating shaft, a second rotating shaft, and a third rotating shaft. The first rotating shaft and the second rotating shaft are each provided with symmetrically distributed external threads. The first rotating shaft and the second rotating shaft are respectively threaded to the corresponding fan blades through their external threads. All the fan blades are slidably connected to the third rotating shaft.

[0016] The beneficial effects of this invention are: by setting magnets spaced apart from the fan blades inside the outer shell, the device can actively adsorb metal impurities such as iron wires and iron filings mixed in the down while conveying and dispersing the down under negative pressure, thereby reducing the probability of metal impurities penetrating the filter material and entering subsequent processes, and ensuring the smooth progress of subsequent processes.

[0017] By inflating the housing with air to make it expand, the surface deposits are moved away from the magnetic source. Then, the air is quickly evacuated to make it contract. The sudden change in volume and stretching effect cause the adsorbed impurities and tangled down to fall off, ensuring the impurity removal effect and stability of the equipment during continuous operation.

[0018] By setting spiral blades in the airflow channel, the down is forced to move in a spiral motion with the airflow. By utilizing the density difference between impurities and down, centrifugal force is used to throw non-metallic residual impurities such as fine dust and feather shafts that cannot be attracted by magnets to a position away from the axis of the spiral blades, thus achieving effective separation from the down. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the outer casing of the present invention; Figure 3 This is a three-dimensional structural diagram of the feed inlet and screen of the present invention; Figure 4 This is a schematic diagram showing the positional relationship between the outer casing and the connecting shaft of the present invention; Figure 5 This is a three-dimensional structural diagram of the fan blade and connecting shaft of the present invention; Figure 6 This is a three-dimensional structural diagram of the fixing block and mounting shell of the present invention; Figure 7 This is a three-dimensional structural cross-sectional view of the mounting shell of the present invention; Figure 8 This is a three-dimensional structural diagram of the fixed tube and the movable tube of the present invention; Figure 9 This is a three-dimensional sectional view of the fixing tube of the present invention; Figure 10 This is a three-dimensional structural diagram of the first and second rotating shafts of the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1-Outer shell, 2-Inlet, 3-Outlet, 4-Screen, 5-Fan blade, 6-Fixing block, 7-Magnet, 8-Mounting shell, 9-Connecting pipe, 901-Static eliminator, 902-Positioning block, 10-Guide shell, 11-Fixing pipe, 12-Moving pipe, 13-Telescopic rod, 14-Helical blade, 15-Sealing plate, 16-Spacing plate, 17-Connecting shaft, 18-Blocking component, 19-Connecting column, 20-Positioning column, 21-Fixing shaft, 22-First rotating shaft, 23-Second rotating shaft, 24-Third rotating shaft. Detailed Implementation

[0021] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0022] Example 1

[0023] A down filtration device for filling down jackets, such as Figures 1-7 As shown, the device includes a housing 1, an inlet 2 and an outlet 3 on the housing 1, a screen 4 fixedly connected inside the housing 1, the lower end of the screen 4 being located below the inlet 2, a number of fan blades 5 evenly distributed inside the housing 1, a drive module for driving the number of fan blades 5 to rotate synchronously on the housing 1, and a number of sets of fixing blocks 6 inside the housing 1, each set including two symmetrically distributed fixing blocks 6, each set of fixing blocks 6 being fixedly connected to a magnet 7, and all magnets 7 being located between the outlet 3 and the screen 4.

[0024] In the above scheme, the shape of the outer shell 1 is only an example in the figure. The inlet 2 on the outer shell 1 is located on its lower left side to ensure that the down enters the outer shell 1 from the side. Multiple inclined surfaces arranged in a matrix are provided inside the outer shell 1 near the outlet 3 to guide the down, and the outlet 3 is connected to an external adsorption device. The screen 4 is an existing device used to screen out impurities contained in the down. The specific number of fan blades 5 is selected by the operator. In this embodiment, all fan blades 5 are connected by the same shaft, which is directly connected to the drive module. The rotating fan blades 5 draw the down into the outer shell 1. The down inside is dispersed; the drive module is an existing device, and the figure shows a motor, belt and pulleys. Pulleys are fixed to the output shaft of the motor and the shaft of the fan blades. The belt is wound around the two pulleys to drive all the fan blades 5 to rotate; the number of fixed blocks 6 is the specific number of fan blades 5 plus one; all the magnets 7 are distributed at intervals with all the fan blades 5, so that after the down is dispersed by the fan blades 5, the metal impurities contained in the down can be attracted by the magnets 7 in time, thereby improving the efficiency and effect of processing metal impurities in the down. There is a gap between two adjacent magnets 7 to form a channel for the down to move.

[0025] like Figure 7 As shown, the magnet 7 consists of a rectangular part and symmetrically distributed guide parts, and the minimum distance between each magnet 7 and the corresponding fan blade 5 is equal. The distance between the magnet 7 and the fan blade 5 is limited to ensure that the down feathers are dispersed.

[0026] In the above scheme, the middle part of magnet 7 is rectangular, which is used to extend the movement path of impurities between two adjacent magnets 7, thereby improving the capture efficiency of metal impurities; the guide part on magnet 7 is located on its upper and lower sides, and the width of each guide part gradually decreases from the rectangular part outward, which is used to guide down and impurities and reduce the impact of impurities in down on magnet 7.

[0027] like Figure 6 and Figure 7 As shown, a mounting shell 8 is fitted on the outer side of the magnet 7. The mounting shell 8 is fixedly connected to the corresponding fixing block 6. A connecting pipe 9 is fixedly connected to and connected to one side of the mounting shell 8. The connecting pipe 9 passes through the corresponding fixing block 6. The mounting shell 8 is composed of a flexible part and symmetrically distributed rigid parts. The flexible part of the mounting shell 8 is made of an elastic deformable material.

[0028] In the above scheme, the rigid parts on the mounting shell 8 are symmetrically distributed front and back, and the flexible parts on it are located between the symmetrically distributed rigid parts. Under normal conditions, the flexible parts of the mounting shell 8 are in a stretched state to ensure that the mounting shell 8 fits with the corresponding magnet 7, thereby reducing the influence on the magnetic force of the magnet 7; the connecting pipe 9 is connected to the external air supply device, and the volume of gas inside the mounting shell 8 is controlled by the operator through the external air supply device.

[0029] like Figure 6 and Figure 7 As shown, the outer shell 1 is provided with equidistant static eliminators 901. The projections of all static eliminators 901 on the horizontal plane are staggered with the projections of all magnets 7 on the horizontal plane. The static eliminators 901 are located between the magnets 7 and the discharge port 3. The outer shell 1 is fixed with symmetrically distributed positioning blocks 902, which are attached to the corresponding static eliminators 901.

[0030] In the above scheme, the static eliminator 901 is an existing device. The figure shows four evenly distributed static eliminators. There is a gap between two adjacent static eliminators 901 for down to pass through, which is used to eliminate static electricity generated by the friction of the down and ensure the smooth flow of the filter air duct; it is also used to increase the contact probability between the static eliminator 901 and the down. The two positioning blocks 902 inside the outer shell 1 are symmetrically distributed from left to right, and the two positioning blocks 902 are attached to the two static eliminators 901 on the left and right sides respectively. The inclined surfaces on the upper and lower sides of the positioning blocks 902 are used to guide the down between the corresponding two static eliminators 901 to ensure the static electricity elimination rate of the down.

[0031] The specific workflow of the above scheme is as follows: When this device is needed to filter down, the operator first connects the down conveying pipe to the inlet 2 and starts the drive module. The drive module drives all the fan blades 5 to rotate synchronously. Then, the external adsorption device is started to create a negative pressure working environment inside the outer shell 1, thereby sucking the down into the outer shell 1 and moving it upward along the outer shell 1.

[0032] As the down feathers move upwards along the inside of the outer shell 1 (the down feathers gradually enter the channels formed by all the magnets 7, while the guide part on the lower side of the magnets 7 guides the moving down feathers, reducing the probability of the down feathers getting tangled on the magnets 7), the down feathers come into contact with and are dispersed by the rotating fan blades 5. At this time, the impurities wrapped in the down feathers are exposed, and the non-metallic impurities and some metallic impurities fall downwards onto the screen 4. The remaining metallic impurities are attracted by the magnetic force of the magnets 7 and adhere to the outside of the mounting shell 8, thus completing the metal removal operation of the down feathers. The down feathers that have undergone the metal removal operation continue to... Continuing to move upward under the influence of airflow, the down gradually enters the gap formed by the static eliminator 901, where the static eliminator 901 eliminates the static electricity present in the down, reduces the accumulation of static electricity on the surface of the down, and reduces the probability of the down fibers tangling, clumping together, or adsorbing onto the inner wall of the outer shell 1 during subsequent conveying. This ensures that the down remains in a loose and smooth flow state and smoothly enters the next sorting or collection process. After the down passes through the static eliminator 901, it continues to move under the influence of airflow and gradually enters the next process through the discharge port 3.

[0033] During the process of adsorbing metal from down feathers, although the guide portion on the lower side of magnet 7 can guide the down feathers, some down feathers will still adhere to or even become entangled on the surface of mounting shell 8 due to the metal impurities. As the amount of down feathers on the surface of mounting shell 8 gradually increases, the attraction of magnet 7 to the metal inside the down feathers will decrease accordingly. Therefore, it is necessary for staff to regularly clean the impurities (down feathers and metal impurities) attached to mounting shell 8. The specific process is as follows: The staff shuts down the external adsorption device, stops the down delivery, and stops the drive module to stop the fan blade 5. Then, they start the external air supply device and inject gas into all the mounting shells 8 through all the connecting pipes 9, causing all the mounting shells 8 to expand rapidly (the mounting shells 8 are stretched again). During this process, as the mounting shells 8 gradually expand, the impurities attached to them gradually move away from the corresponding magnets 7, and the attraction of magnets 7 to the metal on the corresponding mounting shells 8 gradually decreases. After the mounting shells 8 expand to contact the fan blades 5, the staff quickly extracts the gas from all the mounting shells 8 through the external air supply device, causing the mounting shells 8 to contract rapidly. During this process, the impurities attached to the mounting shells 8 separate from them and fall downward into the outer shell 1. At the same time, during the expansion of the mounting shells 8, the down wrapped around them is stretched circumferentially, causing the down to break at the stress concentration point and separate from the mounting shells 8. This reduces the impact on the magnetic attraction of magnets 7 during the subsequent down filtration process, ensuring efficient removal of metal impurities contained in the down.

[0034] The cleaning is complete once the housing 8 is firmly reattached to the corresponding magnet 7. The staff then continues to filter down according to the above procedure until the device has been used for the specified time. After that, the staff stops filtering down and cleans and maintains the device (in actual use, a closed door can be installed around the housing 1 to facilitate cleaning of the inside) for future use.

[0035] Example 2

[0036] Based on Example 1, such as Figure 2 , Figure 8 and Figure 9 As shown, it also includes a guide shell 10, which is fixed inside the outer shell 1 and located between the magnet 7 and the static eliminator 901. The guide shell 10 has a matrix-distributed inclined surface. A fixed tube 11 is fixed to the upper side of the guide shell 10. The guide shell 10 has a through hole communicating with the fixed tube 11. A movable tube 12 is slidably connected to the fixed tube 11. A telescopic rod 13 is fixed to the guide shell 10. The telescopic end of the telescopic rod 13 is fixed to the movable tube 12. A spiral blade 14 is fixed inside the fixed tube 11 and is slidably connected to the movable tube 12.

[0037] In the above scheme, the guide plate 10 is part of the conical shell, and the apex of the conical shell on which the guide plate 10 is located is above it, so that the guide plate 10 can guide the upward-moving down to the middle part, and can also guide the down falling on its upper side to the periphery; the fixing tube 11 is located in the middle of the guide plate 10, and the central axis of the fixing tube 11 coincides with the central axis of the outer shell 1; the telescopic rod 13 is an existing device, and its driving method is selected by the staff, which can be an electric push rod, a hydraulic push rod, etc. Under normal conditions, the telescopic end of the telescopic rod 13 is in the extended state.

[0038] like Figure 8 As shown, the movable tube 12 is sleeved on the outside of the fixed tube 11, and the outer diameter of the movable tube 12 is smaller than the diameter of the inner circle of the outer shell 1.

[0039] In the above scheme, the size of the moving tube 12 is limited so that a gap is formed between the moving tube 12 and the inner wall of the outer shell 1 for the movement of down feathers.

[0040] like Figure 9 As shown, when the moving tube 12 is not moving, the height of the upper side of the spiral blade 14 is not lower than the height of the upper side of the moving tube 12, ensuring that when the moving tube 12 is not moving, the guiding effect of the spiral blade 14 can fully act on all the airflow and down that is about to enter the moving tube 12, thereby optimizing the airflow organization and preventing the down from turbulence, entanglement or blockage at the key inlet.

[0041] The specific workflow of the above scheme is as follows: When this equipment is needed to filter down, the operator adjusts the position of the moving tube 12 according to the proportion of impurities contained in the down. The specific procedure is as follows: Start the telescopic rod 13. The telescopic end of the telescopic rod 13 drives the moving tube 12 to move downward, so that the spiral blade 14 located inside the moving tube 12 is gradually exposed. When the moving tube 12 is adjusted to the designated position (the position is determined by the staff according to the proportion of impurities contained in the down), the staff stops the telescopic rod 13, thereby fixing the moving tube 12 in the moved position. Then, the down is filtered according to the above operation.

[0042] As the down moves upward within the outer shell 1, it gradually comes into contact with the lower side of the guide shell 10 and is guided by the guide shell 10 into the fixed tube 11. The down then enters the fixed tube 11 and moves upward in a spiral shape along the spiral blade 14. During the movement, centrifugal force throws the impurities remaining in the down away from the axis of the spiral blade 14, separating them from the down. Subsequently, the separated impurities and down continue to move upward under the action of negative pressure airflow and gradually enter the moving tube 12.

[0043] When impurities move with the airflow to the top outlet of the moving tube 12, these impurities break free from the constraint of the moving tube 12 and fall into the gap formed between the moving tube 12 and the outer shell 1 under the action of gravity. They then gradually move downwards along the gap to the guide shell 10. The impurities falling on the guide shell 10 are guided by the inclined surface on the upper side of the guide shell 10 to gradually move towards the junction with the outer shell 1, thereby further reducing the impurity content of the down. At the same time, the down that has separated from the moving tube 12 continues to move upwards under the action of the negative pressure airflow and finally enters the discharge port 3 at the top of the outer shell 1, thereby further reducing the impurity content of the down.

[0044] Example 3

[0045] Based on Example 2, such as Figures 2-6 As shown, the outer shell 1 is detachably connected to symmetrically distributed sealing plates 15, and the sealing plates 15 are detachably connected to several spacer plates 16. The outer shell 1 is slidably connected to the fixing blocks 6. The spacer plates 16 are used to block the gap between two adjacent fixing blocks 6. The connecting pipe 9 passes through the corresponding sealing plate 15 and is fixed to it. The outer shell 1 is rotatably connected to a matrix of connected shafts 17. A reset torsion spring is provided between the connecting shafts 17 and the outer shell 1. A shielding member 18 is wound on the connecting shafts 17. The shielding member 18 passes through the outer shell 1 and is fixed to the corresponding magnet 7.

[0046] In the above scheme, the two sealing plates 15 on the outer shell 1 are symmetrically distributed front and back. The sealing plates 15 can be fixed to the outer shell 1 by means of bolts or buckles. In this embodiment, there are five magnets 7, which are arranged from left to right as the first magnet 7, the second magnet 7, the third magnet 7, the fourth magnet 7, and the fifth magnet 7. The specific number of spacers 16 is the specific number of fixing blocks 6 plus one. The size of the spacers 16 is adapted to the distance between two adjacent magnets 7. In this embodiment, the connecting pipe 9 is a flexible hose. All connecting shafts 17 are located on the outside of the outer shell 1, and two are arranged symmetrically on the left and right sides. The shielding members 18 are made of flexible material. The two shielding members 18 on the lower side are fixed to the lower side of the corresponding mounting shell 8, and the two shielding members 18 on the upper side are fixed to the upper side of the corresponding mounting shell 8. The torsion spring between the outer shell 1 and the connecting shaft 17 is always in a stored state to ensure that the corresponding shielding member 18 is always in a tensioned state.

[0047] like Figures 2-6 As shown, the shield 18 is made of flexible material. The width of the shield 18 is the same as the width of the inner side of the outer shell 1. It is used to improve the sealing between the shield 18 and the outer shell 1 and reduce the probability of down passing through the gap between them. The connecting shaft 17 is located below the magnet 7, so that the shield 18 is always in an inclined state, which is used to guide the rising down to the area where the magnet 7 is located.

[0048] like Figure 4 , Figure 5 and Figure 10 As shown, the outer casing 1 is rotatably connected to a connecting post 19 and a positioning post 20. The drive module on the outer casing 1 is used to drive the connecting post 19 to rotate. The connecting post 19 and the positioning post 20 are fixedly connected to a fixed shaft 21. The fan blade 5 is slidably connected to the fixed shaft 21. The connecting post 19 and the positioning post 20 are rotatably connected to a first rotating shaft 22, a second rotating shaft 23 and a third rotating shaft 24. The first rotating shaft 22 and the second rotating shaft 23 are both provided with symmetrically distributed external threads. The first rotating shaft 22 and the second rotating shaft 23 are respectively threaded to the corresponding fan blade 5 through their external threads. All the fan blades 5 are slidably connected to the third rotating shaft 24.

[0049] In the above scheme, the connecting post 19 is located on the right side of the outer shell 1, and the positioning post 20 is located on the left side of the outer shell 1. In this embodiment, the belt of the drive module is wound around the connecting post 19, and the fixed shaft 21 and the third rotating shaft 24 are used together to guide the fan blade 5. In this embodiment, the fan blade 5 is described as four in both the figure and the text, and from left to right, they are the first fan blade 5, the second fan blade 5, the third fan blade 5, and the fourth fan blade 5. The first fan blade 5 and the fourth fan blade 5 are respectively connected to the corresponding external thread on the second rotating shaft 23, and the second fan blade 5 and the third fan blade 5 are respectively connected to the corresponding external thread on the first rotating shaft 22.

[0050] The specific workflow of the above scheme is as follows: When this equipment is needed to filter down, the staff will adjust the gap between two adjacent magnets 7 according to the proportion of metal impurities contained in the down to enhance the attraction of the magnets 7 to the metal impurities, thereby improving the removal efficiency. The specific process is as follows: The operator rotates the first rotating shaft 22, which drives the second and third fan blades 5 to move through the symmetrically distributed external threads on the shaft during rotation, bringing the second and third fan blades 5 closer to each other until they have both moved to the designated position (determined by the operator). The operator then stops rotating the first rotating shaft 22 and fixes the second and third fan blades 5 in their moved positions.

[0051] After adjusting the positions of the second and third fan blades 5, the workers first removed the front and rear sealing plates 15 in sequence, and then removed all the partition plates 16 in sequence. After removing all the partition plates 16, the workers simultaneously moved the two fixing blocks 6 on the second magnet 7 (moving them towards the central axis of the outer casing 1) to reduce the distance between the second magnet 7 and the third magnet 7. After adjusting the second magnet 7 to the appropriate position (at this time, the second magnet 7 and the third magnet 7 are symmetrically distributed relative to the second fan blade 5), the workers stopped moving the two fixing blocks 6 on the second magnet 7 and selected two partition plates 16 of appropriate size to install between the corresponding two fixing blocks 6, thereby sealing the gap between the corresponding two fixing blocks 6. Then, the workers changed the position of the fourth magnet 7 as described above. After completing the installation, the workers then adjusted the positions of the first and fourth fan blades 5, as well as the first and fifth magnets 7 in sequence, until all fan blades and magnets reached the target position.

[0052] During the movement of the first magnet 7 and the fifth magnet 7, the first magnet 7 drives the two blocking parts 18 on the left to move synchronously through the mounting shell 8 on it, thereby pulling out the blocking parts 18 wound on the two connecting shafts 17 on the left (during this process, the torsion springs on the two connecting shafts 17 on the left twist and store force). The two blocking parts 18 on the left continue to block the gap between the outer shell 1 and the left mounting shell 8. At the same time, the fifth magnet 7 drives the two blocking parts 18 on the right to move synchronously during the movement, and the two blocking parts 18 on the right continue to block the gap between the outer shell 1 and the right mounting shell 8, thereby reducing the probability of down feathers passing through the gap.

[0053] After adjusting the positions of all fan blades 5 and magnets 7, the staff reinstalled the two sealing plates 15 into the corresponding positions of the outer casing 1. Then, the down was filtered according to the above operation. As the down moved upward, when the down came into contact with the two lower blocking parts 18, the two blocking parts 18 guided the down into the gap formed by the first magnet 7 and the second magnet 7 and the gap formed by the fourth magnet 7 and the fifth magnet 7, respectively, thereby ensuring the removal effect of metal impurities in the down.

[0054] During the down filtration process, when it is necessary to clean the impurities attached to the mounting shell 8, the staff can pressurize the mounting shell 8 with gas according to the above operation until the equipment has been running for a specified period of time. After that, the staff will shut down the equipment and clean and maintain the internal parts of the equipment in preparation for subsequent use.

[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A down filtration device for filling down jackets, characterized in that: The device includes a housing (1), on which a feed inlet (2) and a discharge outlet (3) are provided. A screen (4) is fixed inside the housing (1), with the lower end of the screen (4) located below the feed inlet (2). A number of fan blades (5) are evenly distributed inside the housing (1). A drive module for driving the fan blades (5) to rotate synchronously is provided on the housing (1). A number of sets of fixing blocks (6) are provided inside the housing (1), each set including two symmetrically distributed fixing blocks (6). A magnet (7) is fixed to each set of fixing blocks (6). All the magnets (7) are located between the discharge outlet (3) and the screen (4).

2. The down filtering device for down filling in down jackets according to claim 1, characterized in that: The magnet (7) consists of a rectangular part and symmetrically distributed guide parts, and the minimum distance between each magnet (7) and the corresponding fan blade (5) is equal.

3. A down filtering device for down filling in down jackets according to claim 2, characterized in that: The magnet (7) is fitted with a mounting shell (8) on its outer side. The mounting shell (8) is fixedly connected to the corresponding fixing block (6). A connecting pipe (9) is fixedly connected to and connected to one side of the mounting shell (8). The connecting pipe (9) passes through the corresponding fixing block (6).

4. A down filtering device for down filling in down jackets according to claim 3, characterized in that: The mounting shell (8) is composed of a flexible part and symmetrically distributed rigid parts, and the flexible part of the mounting shell (8) is made of an elastic deformable material.

5. A down filtering device for filling down jackets according to claim 4, characterized in that: The outer shell (1) is provided with equidistant static eliminators (901). The projections of all the static eliminators (901) on the horizontal plane are staggered with the projections of all the magnets (7) on the horizontal plane. The static eliminators (901) are located between the magnets (7) and the discharge port (3). The outer shell (1) is fixed with symmetrically distributed positioning blocks (902). The positioning blocks (902) are attached to the corresponding static eliminators (901). The positioning blocks (902) are provided with symmetrically distributed inclined surfaces.

6. A down filtering device for filling down jackets according to claim 5, characterized in that: It also includes a guide shell (10), which is fixed inside the outer shell (1) and located between the magnet (7) and the static eliminator (901). The guide shell (10) has a matrix-distributed inclined surface. A fixed tube (11) is fixed to the upper side of the guide shell (10). The guide shell (10) has a through hole communicating with the fixed tube (11). The fixed tube (11) is slidably connected to a moving tube (12). The guide shell (10) is fixed to a telescopic rod (13). The telescopic end of the telescopic rod (13) is fixed to the moving tube (12). A spiral blade (14) is fixed inside the fixed tube (11). The spiral blade (14) is slidably connected to the moving tube (12).

7. A down filtering device for down filling in down jackets according to claim 6, characterized in that: The movable tube (12) is sleeved on the outside of the fixed tube (11), and the outer diameter of the movable tube (12) is smaller than the diameter of the inscribed circle of the outer shell (1). When the movable tube (12) is not moving, the height of the upper side of the spiral blade (14) is not lower than the height of the upper side of the movable tube (12).

8. A down filtering device for down filling in down jackets according to claim 7, characterized in that: The outer shell (1) is detachably connected to symmetrically distributed sealing plates (15), and the sealing plates (15) are detachably connected to several spacer plates (16). The outer shell (1) is slidably connected to the fixing block (6). The spacer plate (16) is used to block the gap between two adjacent fixing blocks (6). The connecting pipe (9) passes through the corresponding sealing plate (15) and is fixed to it. The outer shell (1) is rotatably connected to a matrix-distributed connecting shaft (17). A reset torsion spring is provided between the connecting shaft (17) and the outer shell (1). A shielding member (18) is wound on the connecting shaft (17). The shielding member (18) passes through the outer shell (1) and is fixed to the corresponding magnet (7).

9. A down filtering device for filling down jackets according to claim 8, characterized in that: The shield (18) is made of a flexible material, the width of the shield (18) is the same as the width of the inner side of the outer shell (1), and the connecting shaft (17) is located below the magnet (7).

10. A down filtering device for filling down jackets according to claim 9, characterized in that: The outer shell (1) is rotatably connected to a connecting post (19) and a positioning post (20). The driving module on the outer shell (1) is used to drive the connecting post (19) to rotate. The connecting post (19) and the positioning post (20) are fixedly connected to a fixed shaft (21). The fan blade (5) is slidably connected to the fixed shaft (21). The connecting post (19) and the positioning post (20) are rotatably connected to a first rotating shaft (22), a second rotating shaft (23), and a third rotating shaft (24). The first rotating shaft (22) and the second rotating shaft (23) are both provided with symmetrically distributed external threads. The first rotating shaft (22) and the second rotating shaft (23) are respectively threaded to the corresponding fan blade (5) through their external threads. All the fan blades (5) are slidably connected to the third rotating shaft (24).

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