High-purity down grading and screening device and screening method

Abstract

The present invention relates to a high-purity down grading and screening device and screening method. The device comprises a bracket, a first separator, a second separator, a third separator, and a fourth separator fixedly connected to the top of the bracket, a first pipe fixedly connected between the first separator and the second separator, a second pipe fixedly connected between the second separator and the third separator, and a third pipe fixedly connected between the third separator and the fourth separator, a feeding device fixedly connected to the outer end of the first separator, and four continuous separators are used for multi-stage separation of down to ensure a high-precision and high-purity grading effect. The device is designed to improve separation efficiency, save resources, and enhance the adaptability of the equipment by combining an independent adjustment system, a transparent design, and an optimized structural layout. The entire system emphasizes continuous operation, automated control, and observation feedback, thereby achieving an efficient, accurate, and easy-to-operate down separation process.

Description

Technical Field

[0001] The present invention relates to a high-purity down grading and screening device and a screening method, and in particular to a high-purity down grading and screening device and a screening method applied in the technical field of down processing. Background Art

[0002] Down airflow grading equipment mainly uses airflow to separate and screen down. The core principle of this equipment is based on the ability of down of different masses and sizes to float in the airflow. When air passes through the down, the light down and heavy impurities (such as broken feathers, dust, etc.) behave differently in the airflow. The fiber structure of the down allows it to float in the airflow, while the heavy impurities are knocked down by the airflow.

[0003] Chinese invention patent CN111607849 discloses a down agglomeration and sorting device for down processing. The device comprises a feed hopper, a feed roller symmetrically arranged at the bottom, and brushes evenly arranged on the outer surface of the feed roller. Synchronous gears are provided on the shaft side of the feed roller, and a feed motor is provided at the shaft end of the feed roller. A clumping sealing cylinder is arranged below the feed hopper. The device disperses clumped down through the interlocking vibration between the pile attachment plate and the fixed plate in the agglomeration sealing cylinder. The dispersed down is then conveyed into a grading and sorting cylinder. A bottom fan at the bottom of the grading and sorting cylinder blows the incoming down upward. Since higher-quality down has a better loftiness and a lower relative density, it is easily blown upward by the bottom wind. Therefore, the down can be separated by wind and divided into multiple levels from top to bottom. The down is then sorted in blocks through a grading discharge pipe provided on the side, achieving higher sorting efficiency.

[0004] Although the above design can separate down by using wind power through the fan, it still has certain limitations. For example, the equipment is high and occupies a large space, and the grading and sorting cylinder is an integrated structure. Different levels of down are prone to mixing to a certain extent during grading.

[0005] Application Contents

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to achieve high-precision, high-efficiency and automatic grading of down through multi-stage separation.

[0007] To solve the above problems, the present invention provides a high-purity down grading and screening device and screening method, including a bracket, a first separator, a second separator, a third separator and a fourth separator are fixedly connected to the top of the bracket, a first pipe is fixedly connected between the first separator and the second separator, a second pipe is fixedly connected between the second separator and the third separator, and a third pipe is fixedly connected between the third separator and the fourth separator. The outer end of the first separator is fixedly connected to a feeding device, the bottoms of the first separator, the second separator, the third separator and the fourth separator are fixedly connected to a valve device, the outer end of the bracket is fixedly connected to a control system, the valve device is electrically connected to the control system through a wire, the first separator, the second separator, the third separator and the fourth separator each include a feeding ring fixedly connected to the bracket, the top of the feed ring is fixedly connected to a separation barrel, the first pipe, the second pipe, the third pipe and the feeding device are respectively arranged along the tangent direction of the outer ends of the feed rings of the first separator, the second separator, the third separator and the fourth separator, and the first separator, the second separator, the third separator and the fourth separator are all made of transparent materials.

[0008] In the above-mentioned high-purity down grading and screening device and screening method, four continuous separators are used for multi-stage separation of down, ensuring a high-precision and high-purity grading effect. Combined with an independent adjustment system, a transparent design and an optimized structural layout, it aims to improve separation efficiency, save resources, and enhance the adaptability of the equipment. The entire system emphasizes continuous operation, automated control and observation feedback, thereby achieving an efficient, accurate and easy-to-operate down separation process.

[0009] As a further improvement of the present application, the separation barrel is a conical structure, and the end with a larger diameter of the conical structure is fixedly connected to the top of the feed ring, and the end with a smaller diameter is located on the upper side of the feed ring. The feed ring and the separation barrel are both hollow structures, and the outer ends of the feed rings of the second separator, the third separator and the fourth separator are fixedly connected to the first pipe, the second pipe and the third pipe respectively. A sieve plate is fixedly connected to the bottom of the feed ring, and a plurality of small holes are opened on the sieve plate near the inner wall of the feed ring, and the plurality of small holes are evenly distributed around the center of the sieve plate.

[0010] As a further improvement of the present application, a collecting bucket is fixedly connected to the bottom of the sieve plate. The collecting bucket is a conical structure, and the end with a larger diameter of the conical structure is fixedly connected to the bottom of the outer end of the sieve plate, and the end with a smaller diameter is located on the lower side of the sieve plate. A discharge box is fixedly connected to the bottom of the collecting bucket.

[0011] As a further improvement of the present application, the discharge box is a cylindrical structure, the collecting hopper and the discharge box are both hollow structures, and the hollow parts of the collecting hopper and the discharge box are interconnected, a bottom cover is fixedly connected to the bottom of the discharge box, and a filter is fixedly connected to the top of the bottom cover.

[0012] As another improvement of the present application, the outer end of the bottom cover is slidably connected to a baffle, a sliding groove is provided between the bottom cover and the baffle, a sliding door is slidably connected in the sliding groove, a handle is fixedly connected to the top of the sliding door, and a discharge port is provided at the corresponding position of the bottom cover and the sliding door.

[0013] As another improved supplement to the present application, the center of the sieve plates of the first separator, the second separator, the third separator and the fourth separator are respectively fixedly connected with the first discharge pipe, the second discharge pipe, the third discharge pipe and the fourth discharge pipe, the first discharge pipe, the second discharge pipe, the third discharge pipe and the fourth discharge pipe respectively penetrate the sieve plates of the first separator, the second separator, the third separator and the fourth separator and extend to the upper and lower sides of the sieve plates, and their upper ends are centimeters away from the separation barrels of the first separator, the second separator, the third separator and the fourth separator by the fourth separator-valve device, the bottoms of the first discharge pipe, the second discharge pipe and the third discharge pipe are respectively fixedly connected to the first pipeline, the second pipeline and the third pipeline, the lower end of the fourth discharge pipe penetrates the bottom side end of the fourth separator and extends to the outside of the fourth separator, and the extended part is fixedly connected to the collecting cylinder.

[0014] As another improved supplement to the present application, the valve device includes a first valve, a second valve, a third valve and a fourth valve respectively fixedly connected to the bottom of the bottom cover of the first separator, the second separator, the third separator and the fourth separator, the first valve, the second valve, the third valve and the fourth valve are all electrically controlled butterfly valves, the first valve, the second valve, the third valve and the fourth valve are respectively electrically connected to the control system through wires, the bottom of the first valve, the second valve, the third valve and the fourth valve are fixedly connected to an exhaust pipe, and one end of the multiple exhaust pipes away from the first valve, the second valve, the third valve and the fourth valve is fixedly connected to an exhaust fan, a dust collecting box is provided at the bottom of the exhaust fan, and the dust collecting box is fixedly connected to the ground where the screening device is installed, the feeding device includes a feed pipe fixedly connected to the outer end of the feed ring of the first separator, a feed fan is fixedly connected to the feed pipe, the end of the feed pipe away from the feed ring is a conical structure, and the end with a smaller diameter of the conical structure is set away from the feed ring, a feed box is provided at the end of the feed pipe away from the feed ring, and the feed box is fixedly connected to the ground where the screening device is installed.

[0015] As another improvement of this application, the following steps are included:

[0016] S1. Loading: The user puts the down to be classified into the feed box, and the down is sucked into the first separator under the action of the airflow of the feed fan;

[0017] S2, primary separation: the down sucked into the first separator completes primary separation in the first separator, wherein the heavier down is discharged from the bottom of the first separator, and the lighter down enters the second separator through the first pipe;

[0018] S3, secondary separation: the down entering the second separator undergoes secondary separation in the second separator, wherein the heavier down is discharged from the bottom of the second separator, and the lighter down enters the third separator through the second pipe;

[0019] S4, three-stage separation: the down entering the third separator completes three-stage separation in the third separator, wherein the heavier down is discharged from the bottom of the third separator, and the lighter down enters the fourth separator through the third pipe;

[0020] S5, four-stage separation: the down entering the fourth separator undergoes secondary separation in the fourth separator, wherein the heavier down is discharged from the bottom of the fourth separator, and the lighter down enters the collection cylinder through the fourth discharge pipe to complete the classification;

[0021] S6, discharging: the user takes out the down in the first separator, the second separator, the third separator, the fourth separator and the collecting cylinder as needed to complete the classification.

[0022] In summary, this solution has the following beneficial effects:

[0023] 1. Multi-stage separation improves accuracy: Four consecutive separators make the down undergo four classifications, ensuring a high separation rate and high purity classification effect. Each level of separation provides a more purified input for the next level, improving the overall separation efficiency and ensuring the accuracy and efficiency of separation.

[0024] 2. Independent adjustment system: The airflow of each separator can be adjusted independently to ensure that each separator has suitable airflow conditions. The control system and valve device provide precise control to meet different separation requirements. The valve device includes an electrically controlled butterfly valve and is connected to the control system through a wire, so that the system can be automatically adjusted.

[0025] 3. Observation and feedback: The transparent design of the separator allows users to visually observe the behavior and deposition of down and make timely adjustments.

[0026] 4. Structural optimization: The tangential direction of the feeding device and each pipe is designed to rotate, helping the heavier down to settle to the bottom. The conical structure of the separation barrel and collection hopper is conducive to the directional movement and separation of the down. The design of the chute and sliding door simplifies the discharge process.

[0027] 5. Efficiency and resource saving: Continuous operation avoids frequent manual intervention and improves work efficiency. The airflow generated by the feed fan allows the down to be quickly sucked from the feed box to the separator. Continuous multiple classifications reduce the need for multiple handling and re-classification, saving time and resources.

[0028] 6. Adaptability and automated control: The equipment and screening method can adapt to a variety of down types and properties, and are highly adaptable. Due to the use of multi-stage separators, it can handle down of different qualities, sizes and densities. The control system can automatically adjust the opening of each electronically controlled butterfly valve, thereby controlling the airflow in each separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is the overall structure diagram of this application;

[0030] Figure 2 A top view of the present application;

[0031] Figure 3 It is the AA cross-sectional view of this application;

[0032] Figure 4 This is the front view of the application;

[0033] Figure 5 This is the BB cross-sectional view of this application;

[0034] Figure 6 This is the appearance structure diagram of the first separator of this application;

[0035] Figure 7 This is the CC cross-sectional view of this application;

[0036] Figure 8 This is a diagram showing the internal structure of the first separator of this application;

[0037] Figure 9 A bottom view of the valve device of this application;

[0038] Figure 10 This is a structural diagram of the valve device of this application;

[0039] Figure 11 This is the appearance structure diagram of this application.

[0040] Description of the numbers in the figure:

[0041] 1. Bracket; 2. First separator; 3. Second separator; 4. Third separator; 5. Fourth separator; 6. First pipeline; 7. Second pipeline; 8. Third pipeline; 9. Feed device; 10. Valve device; 11. Control system; 12. Feed ring; 13. Separation barrel; 14. Sieve plate; 15. Collecting hopper; 16. Discharge box; 17. Bottom cover; 18. Baffle; 19. Chute; 20. Sliding door; 21. First discharge pipe; 22. Second discharge pipe; 23. Third discharge pipe; 24. Fourth discharge pipe; 25. First valve; 26. Second valve; 27. Third valve; 28. Fourth valve; 29. ​​Exhaust pipe; 30. Exhaust fan; 31. Feed pipe; 32. Feed fan; 33. Feed box. DETAILED DESCRIPTION

[0042] The following describes three implementation methods of the present application in detail with reference to the accompanying drawings.

[0043] The first implementation method:

[0044] Figure 1 、 Figure 2 、 Figure 4 and Figure 11 Shown.

[0045] A high-purity down grading and screening device and screening method, comprising a bracket 1, a first separator 2, a second separator 3, a third separator 4 and a fourth separator 5 are fixedly connected to the top of the bracket 1, a first pipe 6 is fixedly connected between the first separator 2 and the second separator 3, a second pipe 7 is fixedly connected between the second separator 3 and the third separator 4, a third pipe 8 is fixedly connected between the third separator 4 and the fourth separator 5, a feeding device 9 is fixedly connected to the outer end of the first separator 2, a valve device 10 is fixedly connected to the bottom of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5, and the bracket 1. A control system 11 is fixedly connected to the outer end, and the valve device 10 is electrically connected to the control system 11 through a wire. The first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 all include a feed ring 12 fixedly connected to the bracket 1, and a separation barrel 13 is fixedly connected to the top of the feed ring 12. The first pipe 6, the second pipe 7, the third pipe 8 and the feeding device 9 are respectively arranged along the tangential direction of the outer end of the feed ring 12 of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5. The first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 are all made of transparent materials.

[0046] In the above-mentioned high-purity down grading and screening device and screening method, four continuous separators are used for multi-stage separation of down, ensuring a high-precision and high-purity grading effect. Combined with an independent adjustment system, a transparent design and an optimized structural layout, it aims to improve separation efficiency, save resources, and enhance the adaptability of the equipment. The entire system emphasizes continuous operation, automated control and observation feedback, thereby achieving an efficient, accurate and easy-to-operate down separation process.

[0047] During use, the user places the pre-treated down to be graded onto the feeding device 9, and then controls the feeding device 9 through the control system 11 to suck the down into the first separator 2. After the down is graded for the first time in the first separator 2, it enters the second separator 3 through the first pipe 6 for the second classification, and then enters the third separator 4 through the second pipe 7 for the third classification, and finally enters the fourth separator 5 through the third pipe 8 for the fourth classification. Down of different grades is separated in sequence during the classification process of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5. The grade of the down gradually increases from the first separator 2, the second separator 3, the third separator 4 to the fourth separator 5. At the same time, the valve device 10 is controlled by the control system 11 to independently adjust the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 so that the down in the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 are adjusted. The airflow in the interior meets the separation requirements of each level. Since the first pipe 6, the second pipe 7, the third pipe 8 and the feeding device 9 are respectively arranged along the tangent direction of the outer end of the feed ring 12 of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5, the down enters the feed ring 12 and rotates along the inner wall of the feed ring 12 under the action of the airflow. During the rotation, it gradually moves toward the inner wall of the separation barrel 13. During the rotation, the heavier down in the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 are deposited to the bottom of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 in turn. During the deposition process, the user can see the deposition amount through the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5. When the deposition amount reaches a certain level, the user manually removes the deposited down inside, and the down classification is completed.

[0048] Multi-stage separation improves precision. Through four consecutive separators, down undergoes four classifications, ensuring high-resolution and high-purity classification results. Each separator can more accurately separate down with specific properties. The independent adjustment system uses a control system 11 and a valve device 10 to independently adjust the airflow of each separator, ensuring that each separator has suitable airflow conditions to meet different separation requirements. The transparent design facilitates observation. Because the separators are made of transparent materials, users can intuitively observe the behavior and deposition of down within the separators, allowing timely adjustments. Rotational separation is more efficient. The tangential direction of the feed device 9 and each pipe causes the down to rotate under the action of the airflow. This design helps to deposit heavier down at the bottom of the separator, improving separation efficiency, saving resources, and increasing efficiency. Because down can undergo multiple classifications continuously in a single device, the need for multiple handling and re-classification is reduced, saving time and resources. The device and screening method are highly adaptable. By adjusting different airflows and control conditions, this device and screening method can adapt to a variety of down types and properties.

[0049] Second implementation method:

[0050] Figure 3 and Figure 5-10 Shown.

[0051] The separation barrel 13 is a conical structure, and the end with a larger diameter of the conical structure is fixedly connected to the top of the feed ring 12, and the end with a smaller diameter is located on the upper side of the feed ring 12. The feed ring 12 and the separation barrel 13 are both hollow structures. The outer ends of the feed rings 12 of the second separator 3, the third separator 4 and the fourth separator 5 are fixedly connected to the first pipe 6, the second pipe 7 and the third pipe 8 respectively. A sieve plate 14 is fixedly connected to the bottom of the feed ring 12. A plurality of small holes are opened on the sieve plate 14 near one end of the inner wall of the feed ring 12, and the plurality of small holes are evenly distributed around the center of the sieve plate 14.

[0052] When the down rotates from the inner wall of the feed ring 12 into the separation barrel 13, the down also rotates and moves along the inner wall of the separation barrel 13 under the action of the airflow. Since the separation barrel 13 is a conical structure, the down gradually moves from the end with a larger diameter to the end with a smaller diameter on the inner wall of the separation barrel 13. During the rotation and movement of the down, centrifugal force toward the outer wall of the separation barrel 13 is generated. Since the mass of down of different grades is different, the magnitude of the centrifugal force they are subjected to is also different. The heavier down gradually moves downward along the inner wall of the separation barrel 13 during this process, and is finally discharged from the small holes on the sieve plate 14, while the lighter down gathers at the top of the separation barrel 13.

[0053] A collecting bucket 15 is fixedly connected to the bottom of the sieve plate 14. The collecting bucket 15 is a conical structure, and the end with a larger diameter of the conical structure is fixedly connected to the bottom of the outer end of the sieve plate 14, and the end with a smaller diameter is located on the lower side of the sieve plate 14. A discharge box 16 is fixedly connected to the bottom of the collecting bucket 15.

[0054] When the heavier down is discharged from the small holes on the screen plate 14 , the down enters the collecting hopper 15 . Under the dual effects of gravity and airflow, the down gradually settles into the discharge box 16 .

[0055] The discharge box 16 is a cylindrical structure. The collecting hopper 15 and the discharge box 16 are both hollow structures, and the hollow parts of the collecting hopper 15 and the discharge box 16 are interconnected. A bottom cover 17 is fixedly connected to the bottom of the discharge box 16, and a filter is fixedly connected to the top of the bottom cover 17.

[0056] The filter on the top of the bottom cover 17 is convenient for separating the down from the gas, so that the down remains on the top of the filter.

[0057] The outer end of the bottom cover 17 is slidably connected to a baffle 18, a sliding groove 19 is provided between the bottom cover 17 and the baffle 18, a sliding door 20 is slidably connected in the sliding groove 19, a handle is fixedly connected to the top of the sliding door 20, and a discharge port is provided at the corresponding position of the bottom cover 17 and the sliding door 20.

[0058] When the down is deposited on the filter screen at the bottom of the bottom cover 17 to a certain extent, the user slides the sliding door 20 to the side by means of the handle and then manually removes the down.

[0059] The first discharge pipe 21, the second discharge pipe 22, the third discharge pipe 23 and the fourth discharge pipe 24 are fixedly connected to the center of the sieve plates 14 of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 respectively. The first discharge pipe 21, the second discharge pipe 22, the third discharge pipe 23 and the fourth discharge pipe 24 respectively penetrate the sieve plates 14 of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 and extend to the upper and lower sides of the sieve plates 14, and their upper ends are 10 cm away from the separation barrels 13 of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 from the fourth separator 5-valve device. The bottoms of the first discharge pipe 21, the second discharge pipe 22 and the third discharge pipe 23 are fixedly connected to the first pipe 6, the second pipe 7 and the third pipe 8 respectively. The lower end of the fourth discharge pipe 24 penetrates the bottom side end of the fourth separator 5 and extends to the outside of the fourth separator 5, and the extended part is fixedly connected to the collecting cylinder.

[0060] When the down is concentrated on the top of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 under the action of the airflow, the down will enter the first pipe 6, the second pipe 7 and the third pipe 8 respectively through the first discharge pipe 21, the second discharge pipe 22 and the third discharge pipe 23 under the action of the airflow, and then enter the second separator 3, the third separator 4 and the fourth separator 5 respectively through the first pipe 6, the second pipe 7 and the third pipe 8, and at the same time enter the collection cylinder outside the fourth separator 5 through the fourth discharge pipe 24.

[0061] The valve device 10 includes a first valve 25, a second valve 26, a third valve 27 and a fourth valve 28, which are fixedly connected to the bottom of the bottom cover 17 of the first separator 2, the second separator 3, the third separator 4 and the fourth separator 5 respectively. The first valve 25, the second valve 26, the third valve 27 and the fourth valve 28 are all electrically controlled butterfly valves. The first valve 25, the second valve 26, the third valve 27 and the fourth valve 28 are electrically connected to the control system 11 through wires. The bottoms of the first valve 25, the second valve 26, the third valve 27 and the fourth valve 28 are fixedly connected to an exhaust pipe 29, and the multiple exhaust pipes 29 are away from One end of the first valve 25, the second valve 26, the third valve 27 and the fourth valve 28 is fixedly connected to the exhaust fan 30, and a dust collecting box is provided at the bottom of the exhaust fan 30, and the dust collecting box is fixedly connected to the ground where the screening device is installed. The feeding device 9 includes a feed pipe 31 fixedly connected to the outer end of the feed ring 12 of the first separator 2, and a feed fan 32 is fixedly connected to the feed pipe 31. The end of the feed pipe 31 away from the feed ring 12 is a conical structure, and the end with a smaller diameter of the conical structure is arranged away from the feed ring 12. A feed box 33 is provided at the end of the feed pipe 31 away from the feed ring 12, and the feed box 33 is fixedly connected to the ground where the screening device is installed.

[0062] During use, air flows from the bottom cover 17 at the bottom of the first separator 2, the second separator 3, the third separator 4, and the fourth separator 5 into the first valve 25, the second valve 26, the third valve 27, and the fourth valve 28, respectively. The air flows are then gathered together through the exhaust pipe 29 and discharged through the exhaust fan 30. During the down separation process, the control system 11 controls the openings of the first valve 25, the second valve 26, the third valve 27, and the fourth valve 28, respectively, so that the air flows in the first separator 2, the second separator 3, the third separator 4, and the fourth separator 5 can better separate the down and achieve a better separation effect. The dust collection box at the bottom of the exhaust fan 30 can collect some dust. When the user puts the down to be classified into the feed box 33, the down is attracted by the airflow of the feed fan 32 and enters the inner wall of the feed ring 12 of the first separator 2 from the feed pipe 31. Under the action of the airflow, the down rotates and moves along the inner wall of the feed ring 12.

[0063] Grading and separation: Since down of different grades has different qualities, its performance under the action of centrifugal force is also different, thus achieving graded separation of down and realizing efficient utilization of resources; automated control: through the control system 11, it can automatically adjust the opening of each electrically controlled butterfly valve, and then control the airflow in each separator, so that the down separation reaches the optimal state; the continuous work process realizes the continuous input, separation, collection and output of down, thereby improving work efficiency; the conical structure: whether it is the separation barrel 13 or the collection hopper 15, its conical structure design is conducive to the directional movement and separation of down; the discharge is simple, and the design of the chute 19 and the sliding door 20 makes it simple and convenient to remove the down from the discharge box 16; the multi-stage separation: through the design of multiple separators, the down can undergo multiple separations, ensuring that it is separated more thoroughly.

[0064] The third implementation method:

[0065] Figure 1-11 Shown.

[0066] The following steps are included:

[0067] S1. Loading: The user places the down to be classified into the feed box 33, and the down is sucked into the first separator 2 under the action of the airflow of the feed fan 32;

[0068] S2, primary separation: the down sucked into the first separator 2 completes primary separation in the first separator 2, wherein the heavier down is discharged from the bottom of the first separator 2, and the lighter down enters the second separator 3 through the first pipe 6;

[0069] S3, secondary separation: the down entering the second separator 3 undergoes secondary separation in the second separator 3, wherein the heavier down is discharged from the bottom of the second separator 3, and the lighter down enters the third separator 4 through the second pipe 7;

[0070] S4, three-stage separation: the down entering the third separator 4 completes three-stage separation in the third separator 4, wherein the heavier down is discharged from the bottom of the third separator 4, and the lighter down enters the fourth separator 5 through the third pipe 8;

[0071] S5, fourth-stage separation: The down entering the fourth separator 5 undergoes secondary separation in the fourth separator 5, wherein the heavier down is discharged from the bottom of the fourth separator 5, and the lighter down enters the collection cylinder through the fourth discharge pipe 24, completing the classification;

[0072] S6, discharging: the user takes out the down in the first separator 2, the second separator 3, the third separator 4, the fourth separator 5 and the collecting cylinder as needed to complete the classification.

[0073] Multi-stage separation: by continuously separating the down in multiple separators, this design achieves precise and detailed down grading, ensuring the accuracy and efficiency of separation. Each stage of separation provides a more purified input for the next stage, which helps to improve the overall separation efficiency. Continuous operation: starting from the feed box 33 and ending at the collection cylinder, the entire process is continuous, which avoids frequent manual intervention and reduces the complexity of the work. It has strong adaptability. Due to the use of multi-stage separators, the design can handle down of different qualities, sizes and densities, making it highly adaptable. Automation and electrical control: the valve device 10 includes an electrically controlled butterfly valve and is connected to the control system 11 through a wire, so that the entire system can be automatically adjusted as needed during the down separation process, greatly improving the convenience of operation. High efficiency: through the airflow generated by the feed fan 32, the down can be quickly sucked into the separator from the feed box 33, improving the overall work efficiency.

[0074] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A high-purity down grading and screening device, characterized by: The invention comprises a bracket (1), wherein a first separator (2), a second separator (3), a third separator (4) and a fourth separator (5) are fixedly connected to the top of the bracket (1), a first pipeline (6) is fixedly connected between the first separator (2) and the second separator (3), a second pipeline (7) is fixedly connected between the second separator (3) and the third separator (4), and a third pipeline (8) is fixedly connected between the third separator (4) and the fourth separator (5), an outer end of the first separator (2) is fixedly connected to a feeding device (9), and the bottoms of the first separator (2), the second separator (3), the third separator (4) and the fourth separator (5) are fixedly connected to a valve device (10), and an outer end of the bracket (1) is fixedly connected to a control valve. The control system (11) is electrically connected to the valve device (10) through a wire, the first separator (2), the second separator (3), the third separator (4) and the fourth separator (5) each include a feed ring (12) fixedly connected to the bracket (1), the top of the feed ring (12) is fixedly connected to a separation barrel (13), the first pipe (6), the second pipe (7), the third pipe (8) and the feed device (9) are respectively arranged along the tangent direction of the outer end of the feed ring (12) of the first separator (2), the second separator (3), the third separator (4) and the fourth separator (5), and the first separator (2), the second separator (3), the third separator (4) and the fourth separator (5) are all made of transparent materials; The separation barrel (13) is a conical structure, and the end with a larger diameter of the conical structure is fixedly connected to the top of the feed ring (12), and the end with a smaller diameter is located on the upper side of the feed ring (12). The feed ring (12) and the separation barrel (13) are both hollow structures. The outer ends of the feed rings (12) of the second separator (3), the third separator (4) and the fourth separator (5) are fixedly connected to the first pipe (6), the second pipe (7) and the third pipe (8), respectively. The valve device (10) comprises a first valve (25), a second valve (26), a third valve (27) and a fourth valve (28) respectively fixedly connected to the bottom of the bottom cover (17) of the first separator (2), the second separator (3), the third separator (4) and the fourth separator (5), wherein the first valve (25), the second valve (26), the third valve (27) and the fourth valve (28) are all electrically controlled butterfly valves, and the first valve (25), the second valve (26), the third valve (27) and the fourth valve (28) are respectively electrically connected to the control system (11) through a wire, and the bottoms of the first valve (25), the second valve (26), the third valve (27) and the fourth valve (28) are all fixedly connected to an exhaust pipe (29), and one end of the plurality of exhaust pipes (29) away from the first valve (25), the second valve (26), the third valve (27) and the fourth valve (28) is fixedly connected to an exhaust fan (30); A sieve plate (14) is fixedly connected to the bottom of the feed ring (12), and a plurality of small holes are opened at one end of the sieve plate (14) close to the inner wall of the feed ring (12), and the plurality of small holes are evenly distributed around the center of the sieve plate (14); The center of the sieve plates (14) of the first separator (2), the second separator (3), the third separator (4) and the fourth separator (5) are respectively fixedly connected with a first discharge pipe (21), a second discharge pipe (22), a third discharge pipe (23) and a fourth discharge pipe (24); the first discharge pipe (21), the second discharge pipe (22), the third discharge pipe (23) and the fourth discharge pipe (24) respectively penetrate the sieve plates (14) of the first separator (2), the second separator (3), the third separator (4) and the fourth separator (5) and extend to the upper side and the lower side of the sieve plates (14); the bottoms of the first discharge pipe (21), the second discharge pipe (22) and the third discharge pipe (23) are respectively fixedly connected to the first pipe (6), the second pipe (7) and the third pipe (8); the lower end of the fourth discharge pipe (24) penetrates the bottom side end of the fourth separator (5) and extends to the outside of the fourth separator (5), and the extended portion is fixedly connected to a collecting cylinder.

2. The high-purity down grading and screening device according to claim 1, characterized in that: The bottom of the sieve plate (14) is fixedly connected to a collecting hopper (15). The collecting hopper (15) is a conical structure, and the end with a larger diameter of the conical structure is fixed to the bottom of the outer end of the sieve plate (14), and the end with a smaller diameter is located on the lower side of the sieve plate (14). The bottom of the collecting hopper (15) is fixedly connected to a discharge box (16).

3. The high-purity down grading and screening device according to claim 2, characterized in that: The discharge box (16) is a cylindrical structure, the collecting hopper (15) and the discharge box (16) are both hollow structures, and the hollow parts of the collecting hopper (15) and the discharge box (16) are interconnected. The bottom of the discharge box (16) is fixedly connected to a bottom cover (17), and the top of the bottom cover (17) is fixedly connected to a filter screen.

4. The high-purity down grading and screening device according to claim 3, characterized in that: The outer end of the bottom cover (17) is slidably connected to a baffle (18), a sliding groove (19) is provided between the bottom cover (17) and the baffle (18), a sliding door (20) is slidably connected in the sliding groove (19), a handle is fixedly connected to the top of the sliding door (20), and a discharge port is provided at a position corresponding to the bottom cover (17) and the sliding door (20).

5. The high-purity down grading and screening device according to claim 4, characterized in that: A dust collecting box is provided at the bottom of the exhaust fan (30), and the dust collecting box is fixedly connected to the ground on which the screening device is installed. The feeding device (9) includes a feeding pipe (31) fixedly connected to the outer end of the feeding ring (12) of the first separator (2). A feeding fan (32) is fixedly connected to the feeding pipe (31). The end of the feeding pipe (31) away from the feeding ring (12) is a conical structure, and the end with a smaller diameter of the conical structure is arranged away from the feeding ring (12). A feeding box (33) is provided at the end of the feeding pipe (31) away from the feeding ring (12), and the feeding box (33) is fixedly connected to the ground on which the screening device is installed.

6. A high-purity down screening method using a high-purity down grading and screening device according to any one of claims 1 to 5, characterized in that: The following steps are included: S1, loading, the user puts the down to be classified into the feed box (33), and the down is sucked into the first separator (2) under the action of the airflow of the feed fan (32); S2, primary separation, the down sucked into the first separator (2) completes primary separation in the first separator (2), wherein the heavier down is discharged from the bottom of the first separator (2), and the lighter down enters the second separator (3) through the first pipe (6); S3, secondary separation, the down entering the second separator (3) undergoes secondary separation in the second separator (3), wherein the heavier down is discharged from the bottom of the second separator (3), and the lighter down enters the third separator (4) through the second pipe (7); S4, three-stage separation, the down entering the third separator (4) completes three-stage separation in the third separator (4), wherein the heavier down is discharged from the bottom of the third separator (4), and the lighter down enters the fourth separator (5) through the third pipe (8); S5, four-stage separation, the down entering the fourth separator (5) completes the second-stage separation in the fourth separator (5), wherein the heavier down is discharged from the bottom of the fourth separator (5), and the lighter down enters the collection cylinder through the fourth discharge pipe (24), completing the classification; S6, discharging: the user takes out the down in the first separator (2), the second separator (3), the third separator (4), the fourth separator (5) and the collection tube as needed to complete the classification.

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