Down feather multi-gradient nondestructive grading and impurity removing integrated device

Abstract

The application is suitable for the down processing technical field, and provides a down multi-gradient lossless grading and impurity removing integrated device, which comprises a pretreatment unit, a multi-gradient grading and impurity removing unit and an intelligent collecting unit which are sequentially connected, and further comprises a central control unit which is electrically connected with the pretreatment unit, the multi-gradient grading and impurity removing unit and the intelligent collecting unit respectively; the pretreatment unit comprises a feeding hopper, a low-temperature ultrasonic scattering cavity and an electrostatic dust removal cavity, the low-temperature ultrasonic scattering cavity is internally provided with an ultrasonic vibration assembly and a low-temperature airflow nozzle, and the electrostatic dust removal cavity is internally provided with a high-voltage electrostatic generating assembly and a dust collecting groove; the application realizes the continuous, automatic and low-damage grading and impurity removing of the down, and effectively solves the problems of the existing technology, such as the easy clogging of the screen hole, the great damage of the down, the insufficient grading precision and the dispersed process.

Description

Technical Field

[0001] This invention belongs to the field of down processing technology, and in particular relates to an integrated device for multi-gradient non-destructive grading and impurity removal of down. Background Technology

[0002] Down is a natural insulating material, possessing advantages such as light weight, excellent warmth retention, and strong resilience, and is widely used in the production of down jackets, down comforters, and other thermal insulation products. Grading and impurity removal is a crucial step in down processing, directly impacting the quality and market value of down products. Currently, down grading and impurity removal primarily employs technologies such as mechanical sieving, airflow sorting, centrifugal separation, and electrostatic separation; however, these technologies all have limitations in practical applications. Fine dust particles are difficult to remove effectively, adhering to the surface of the down fibers, affecting the effectiveness of subsequent grading and impurity removal, polluting the production environment, and harming the health of operators.

[0003] Sieve holes are prone to clogging, resulting in insufficient grading accuracy: Mechanical sieving technology uses sieves with different apertures to grade down. During the grading process, larger impurities such as stiff feathers and long feathers easily get stuck in the sieve holes, causing clogging and reducing down throughput, thus affecting the overall sorting effect. Frequent machine shutdowns are required to clear the clogged sieve holes, reducing production efficiency. Furthermore, a single mechanical sieving method cannot achieve precise multi-gradient grading of down; it typically only divides down into a few approximate grades, failing to meet the stringent quality requirements of high-end down products.

[0004] The deep impurity removal effect is limited, and it is difficult to remove impurities of different densities: Existing airflow sorting and centrifugal separation technologies mainly utilize density differences to separate down from impurities, but they can usually only remove impurities with large density differences. For impurities with densities close to down, such as feather fragments and fine down dander, the separation effect is poor. At the same time, a single separation method is difficult to adapt to the impurity removal needs of different types of down with different moisture contents, resulting in unstable impurity removal effects and large fluctuations in product quality.

[0005] The processes are fragmented and have a low level of automation: Existing down processing typically involves multiple independent steps such as breaking down, dust removal, grading, impurity removal, and collection. Each step requires separate equipment and operators, resulting in large floor space requirements, high energy consumption, and easy loss and secondary contamination of down between steps. In addition, most existing equipment requires manual operation and monitoring, leading to high labor intensity, low production efficiency, and product quality that is easily affected by human factors, making it difficult to achieve standardized production.

[0006] Therefore, an integrated device for multi-gradient non-destructive grading and impurity removal of down feathers is needed to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide an integrated device for multi-gradient non-destructive grading and impurity removal of down feathers to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] The integrated multi-gradient non-destructive grading and impurity removal device for down includes a pretreatment unit, a multi-gradient grading and impurity removal unit, and an intelligent collection unit connected in sequence, as well as a central control unit electrically connected to the pretreatment unit, the multi-gradient grading and impurity removal unit, and the intelligent collection unit respectively. The pretreatment unit includes a feeding hopper, a low-temperature ultrasonic dispersing chamber, and an electrostatic dust removal chamber. The low-temperature ultrasonic dispersing chamber is equipped with an ultrasonic vibration component and a low-temperature airflow nozzle, and the electrostatic dust removal chamber is equipped with a high-voltage electrostatic generator and a dust collection tank. The multi-gradient grading and impurity removal unit includes a main grading chamber and a self-cleaning screen disposed inside the main grading chamber. The system comprises an airflow generating component connected to the bottom of the main grading chamber, and a primary cyclone separator, a secondary cyclone separator, and a tertiary cyclone separator sequentially connected to the sidewalls of the main grading chamber. The outlet of the primary cyclone separator connects to the inlet of the secondary cyclone separator, and the outlet of the secondary cyclone separator connects to the inlet of the tertiary cyclone separator. The inlets of each cyclone separator are located on the sidewalls, and the outlets are located at the top. The intelligent collection unit includes a collection pipe connected to the outlet of each cyclone separator, an online detection module installed on the collection pipe, and multiple classified collection compartments connected to the end of the collection pipe.

[0010] A further technical solution involves an insulation layer on the inner wall of the low-temperature ultrasonic dispersing cavity. The ultrasonic vibration assembly includes multiple ultrasonic vibration plates arranged alternately along the vertical direction. Each ultrasonic vibration plate is electrically connected to a central control unit. The low-temperature airflow nozzles are evenly distributed circumferentially along the low-temperature ultrasonic dispersing cavity, and the low-temperature airflow nozzles spray upwards at an angle to the vertical direction. This structure enables the low-temperature airflow to form a uniform temperature field within the cavity, effectively maintaining the dry and fluffy state of the down fibers. The alternately arranged ultrasonic vibration plates ensure uniform distribution of ultrasonic waves within the cavity, improving the dispersing effect of agglomerated down. The independently adjustable ultrasonic vibration plates can adapt to the dispersing needs of different types and degrees of agglomeration of down, further reducing damage to the down fibers.

[0011] A further technical solution involves a high-voltage electrostatic generator comprising multiple parallel anode plates and cathode wires arranged alternately. A dust collection trough is located at the bottom of the electrostatic precipitator chamber, and a spiral discharge mechanism is provided at the bottom of the dust collection trough. This structure can create a uniform high-voltage electric field within the electrostatic precipitator chamber, allowing dust particles to become fully charged and adsorbed by the anode plates. The alternating arrangement of anode plates and cathode wires increases the area of ​​the electric field, improving dust removal efficiency. The spiral discharge mechanism automatically discharges the collected dust, eliminating the need for manual cleaning, reducing labor intensity, and preventing secondary dust pollution.

[0012] A further technical solution includes a self-cleaning screen assembly comprising multiple layers of grading screens spaced vertically, a rotating cleaning brush positioned above each layer of grading screens, and a drive motor for rotating the cleaning brushes. The aperture of the multiple layers of grading screens decreases progressively from top to bottom, and the bristles of the rotating cleaning brushes contact the upper surface of the grading screens. This structure enables multi-gradient grading of down, allowing down and impurities of different particle sizes to remain on different grading screens. The rotating cleaning brushes clean the surface of the grading screens in real time, effectively preventing the screen holes from being clogged by impurities, eliminating the need for frequent shutdowns for cleaning. The progressively decreasing aperture improves grading accuracy, meeting the grading requirements for down of different qualities.

[0013] A further technical solution includes a vibrator disposed below each layer of grading screens. The vibrators are electrically connected to the central control unit. The edges of the grading screens are equipped with elastic connectors, which connect the grading screens to the inner wall of the main grading chamber. This structure enables the grading screens to generate small-amplitude vibrations, further promoting the dispersion and grading of down, thus improving the grading effect. The elastic connectors buffer the impact of vibration on the main grading chamber, reducing noise and vibration during equipment operation. The independently adjustable vibrators can adjust vibration parameters according to the characteristics of the down, adapting to the grading requirements of different types of down.

[0014] A further technical solution includes an airflow generating assembly comprising a main fan, an annular duct connected to the main fan outlet, and multiple airflow nozzles disposed on the annular duct. The airflow nozzles spray upwards, and each nozzle is electrically connected to a central control unit. This structure can generate a uniform upward airflow within the main grading chamber, suspending the down and reducing friction between the down and the screen, thus minimizing down damage. The annular duct and uniformly distributed airflow nozzles ensure uniform airflow distribution within the main grading chamber, improving grading consistency. The independently adjustable airflow nozzles can adjust airflow parameters according to the characteristics of the down, adapting to the grading requirements of different types of down.

[0015] A further technical solution involves sequentially decreasing inner diameters of the primary, secondary, and tertiary cyclone separators, and progressively increasing inlet heights at each stage. Each stage of the cyclone separator has a contaminant collection chamber at its bottom. This structure enables each stage of the cyclone separator to generate centrifugal forces of varying intensities, specifically separating impurities of different densities. The progressively increasing inlet heights ensure that down particles of different sizes enter their respective cyclone separators sequentially, improving impurity removal efficiency. The contaminant collection chambers collect the separated impurities for centralized processing, preventing them from re-entering the down.

[0016] A further technical solution involves an online detection module comprising an optical sensor, a weight sensor, a loft sensor, and a moisture sensor; all of these sensors are electrically connected to a central control unit. This structure can detect quality parameters such as color, impurity content, weight, and loft of down in real time, providing accurate data for down classification and collection. The combination of multiple sensors enables a comprehensive evaluation of down quality, improving classification accuracy. The real-time detection function can promptly identify product quality issues, ensuring product quality stability.

[0017] A further technical solution involves installing multiple electrically operated valves on the collection pipeline, each corresponding to a different collection bin. These valves are electrically connected to a central control unit. This structure automatically controls the opening and closing of the corresponding valves based on the detection results from the online detection module, allowing down of different qualities to be sent to their respective collection bins. The automatically switching collection method enables continuous down production, improving efficiency. Multiple collection bins can meet the classification needs of down of different qualities, facilitating subsequent processing and sales.

[0018] A further technical solution involves a central control unit comprising a data acquisition module, a data processing module, a control execution module, and a storage module. The data acquisition module is electrically connected to the online detection module, the data processing module is electrically connected to both the data acquisition module and the storage module, and the control execution module is electrically connected to the data processing module. This structure enables automated control of the entire device. The data acquisition module can acquire detection data from various sensors in real time, the data processing module can analyze and process the acquired data, and the control execution module can automatically adjust the operating parameters of each unit based on the processing results. The central control unit can automatically adjust operating parameters according to different raw material and product requirements, adapting to different production needs and improving production flexibility and adaptability.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention employs a pretreatment technology that combines low-temperature ultrasonic agitation with electrostatic dust removal. The resonance effect of ultrasound is used to break up clumps of down, avoiding the direct impact of mechanical stirring on the down fibers. At the same time, the low-temperature airflow can reduce the brittleness of the down fibers and reduce the damage to the fibers caused by ultrasonic vibration, which helps to maintain the fluffiness and warmth of the down. The electrostatic dust removal technology can effectively remove fine dust from the down, improve the effect of subsequent grading and impurity removal, and improve the production environment, reducing the harm of dust to the health of operators.

[0021] This invention employs a grading technology combining airflow-vibration synergistic grading with a self-cleaning screen. The multi-layered grading screen enables multi-gradient grading of down, improving grading accuracy. The rising airflow suspends the down within the main grading chamber, reducing friction between the down and the screen and minimizing down damage. The self-cleaning screen assembly uses a rotating cleaning brush to continuously clean the screen surface, effectively preventing screen blockage and eliminating the need for frequent shutdowns for cleaning, thus improving production efficiency. Simultaneously, the vibrator's auxiliary action causes the grading screen to vibrate slightly, further enhancing the grading effect and ensuring effective separation of down particles of different sizes.

[0022] This invention employs a combination of multi-stage cyclone separation and intelligent collection technology. By utilizing the centrifugal forces of varying intensities generated by each stage of the cyclone separator, impurities of different densities can be selectively separated, achieving deep impurity removal from the down. The intelligent collection unit monitors the quality parameters of the down in real time through an online detection module. The central control unit automatically controls the opening and closing of the electric valve based on the detection results, enabling automatic classification and collection of down of different qualities. This improves the level of automation in production and the stability of product quality. The integrated design combines processes such as dispersing, dust removal, grading, impurity removal, and collection into one device, reducing floor space and energy consumption, and avoiding down loss and secondary pollution between processes.

[0023] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a block diagram of the overall architecture of the present invention;

[0025] Figure 2 This is a schematic diagram of the preprocessing unit of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the multi-gradient hierarchical impurity removal unit and the intelligent collection unit of the present invention;

[0027] Figure 4 This is a structural block diagram of the central control unit provided in an embodiment of the present invention.

[0028] In the diagram: 1. Pretreatment unit; 11. Feed hopper; 12. Low-temperature ultrasonic agitation chamber; 121. Ultrasonic vibration assembly; 1211. Ultrasonic vibration plate; 122. Low-temperature airflow nozzle; 123. Insulation layer; 13. Electrostatic dust removal chamber; 131. High-voltage electrostatic generator assembly; 1311. Anode plate; 1312. Cathode wire; 132. Dust collection tank; 1321. Spiral discharge mechanism; 2. Multi-gradient classification and impurity removal unit; 21. Main classification chamber; 22. Self-cleaning screen assembly; 221. Classification screen; 222. Rotary cleaning brush; 223. Drive motor; 224. Vibrator; 225. Elastic connector; 23. Airflow generator assembly; 231. Main fan; 232. Annular air duct; 233. Airflow nozzle; 24. Primary cyclone separator; 25. Secondary cyclone separator; 26. Tertiary cyclone separator; 27. Impurity collection bin; 3. Intelligent collection unit; 31. Collection pipe; 32. Online detection module; 321. Optical sensor; 322. Weight sensor; 323. Looseness sensor; 324. Moisture sensor; 33. Classified collection bin; 34. Electric valve; 4. Central control unit; 41. Data acquisition module; 42. Data processing module; 43. Control execution module; 44. Storage module; 26. Secondary cyclone separator; 27. Tertiary cyclone separator; 38. Impurity collection bin; 39. Intelligent collection unit; 31. Collection pipe; 32. Online detection module; 321. Optical sensor; 322. Weight sensor; 323. Looseness sensor; 324. Moisture sensor; 33. Classified collection bin; 34. Electric valve; 4. Central control unit; 41. Data acquisition module; 42. Data processing module; 43. Control execution module; 44. Storage module. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0031] Example 1

[0032] like Figure 1-4 As shown, this embodiment of the invention provides an integrated device for multi-gradient non-destructive grading and impurity removal of down feathers, including a pre-treatment unit 1, a multi-gradient grading and impurity removal unit 2 and an intelligent collection unit 3 connected in sequence, and a central control unit 4 electrically connected to the pre-treatment unit 1, the multi-gradient grading and impurity removal unit 2 and the intelligent collection unit 3 respectively.

[0033] The pretreatment unit 1 includes a feeding hopper 11, a low-temperature ultrasonic agitation chamber 12, and an electrostatic dust removal chamber 13. The feeding hopper 11 is fixedly connected to the top of the low-temperature ultrasonic agitation chamber 12, and the bottom of the low-temperature ultrasonic agitation chamber 12 is connected to the top of the electrostatic dust removal chamber 13 through a pipe. The low-temperature ultrasonic agitation chamber 12 is equipped with an ultrasonic vibration assembly 121 and a low-temperature airflow nozzle 122. The electrostatic dust removal chamber 13 is equipped with a high-voltage electrostatic generator 131 and a dust collection tank 132.

[0034] The multi-gradient classification and impurity removal unit 2 includes a main classification chamber 21, a self-cleaning screen assembly 22, an airflow generating assembly 23, a primary cyclone separator 24, a secondary cyclone separator 25, and a tertiary cyclone separator 26. The main classification chamber 21 is a vertically arranged cylindrical cavity, its top connected to the bottom of the electrostatic precipitator chamber 13 via a pipe. The self-cleaning screen assembly 22 is disposed inside the main classification chamber 21. The airflow generating assembly 23 is connected to the bottom of the main classification chamber 21. The side wall inlet of the primary cyclone separator 24 is connected to the side wall of the main classification chamber 21, the top outlet of the primary cyclone separator 24 is connected to the side wall inlet of the secondary cyclone separator 25, and the top outlet of the secondary cyclone separator 25 is connected to the side wall inlet of the tertiary cyclone separator 26.

[0035] The intelligent collection unit 3 includes a collection pipe 31, an online detection module 32, and multiple sorting collection bins 33. One end of the collection pipe 31 is connected to the top air outlet of the three-stage cyclone separator 26, and the other end is connected to the top of each of the multiple sorting collection bins 33. The online detection module 32 is fixedly connected to the collection pipe 31.

[0036] The central control unit 4 is electrically connected to each of the execution components of the preprocessing unit 1, the multi-gradient hierarchical impurity removal unit 2, and the intelligent collection unit 3.

[0037] In this embodiment, the down raw material enters the low-temperature ultrasonic dispersing chamber 12 from the feed hopper 11, where it is dispersed and kept dry and fluffy under the action of ultrasonic vibration and low-temperature airflow. It then enters the electrostatic dust removal chamber 13 to remove fine dust. Next, it enters the main grading chamber 21 for preliminary grading under the action of airflow. The pre-graded down is then separated in series by a primary cyclone separator 24, a secondary cyclone separator 25, and a tertiary cyclone separator 26 to remove various impurities. Finally, it enters the collection pipe 31, where the online detection module 32 detects the quality of the down. The central control unit 4, based on the detection results, sends down of different qualities to the corresponding sorting and collection bins 33.

[0038] The overall control method of this embodiment is as follows: The central control unit calls the corresponding down variety process parameters pre-stored in the storage module, and sequentially starts the pre-processing unit, the multi-gradient graded impurity removal unit, and the intelligent collection unit through the control execution module; during operation, the data acquisition module collects the detection data of the online detection module in real time, and the data processing module compares the detection data with the preset standard parameters. When the parameters are abnormal, the control execution module automatically adjusts the operating parameters of each unit until the parameters return to the standard state; after production is completed, the central control unit shuts down each unit in reverse order of the process and automatically records the process parameters and product quality data of this production to the storage module.

[0039] Example 2

[0040] like Figure 2 As shown, the difference between this embodiment and embodiment 1 is that: the inner wall of the low-temperature ultrasonic dispersing cavity 12 is provided with a heat insulation layer 123, the ultrasonic vibration assembly 121 includes a plurality of ultrasonic vibration plates 1211 arranged alternately in the vertical direction, each ultrasonic vibration plate 1211 is electrically connected to the central control unit 4, the low-temperature airflow nozzles 122 are evenly distributed along the circumference of the low-temperature ultrasonic dispersing cavity 12, and the low-temperature airflow nozzles 122 spray upward at an angle with the vertical direction.

[0041] In this embodiment, the insulation layer 123 effectively maintains the low-temperature environment within the cryogenic ultrasonic dispersing cavity 12, reducing cold loss. The staggered ultrasonic vibration plates 1211 ensure uniform distribution of ultrasonic waves within the cavity, improving the dispersing effect of clumped down. The low-temperature airflow ejected from the low-temperature airflow nozzles 122 keeps the down fibers dry and fluffy, while reducing their brittleness and minimizing damage from ultrasonic vibration. The central control unit 4 can adjust the vibration frequency of each ultrasonic vibration plate 1211 according to the characteristics of the down to achieve the optimal dispersing effect.

[0042] The low-temperature ultrasonic agglomeration control method in this embodiment is as follows: The central control unit adjusts the vibration parameters of each ultrasonic vibrating plate according to the feeding speed and the degree of agglomeration of the down raw material through the control execution module to adapt to the agglomeration requirements of down with different degrees of agglomeration; at the same time, based on the temperature detection value inside the low-temperature ultrasonic agglomeration cavity, the gas flow rate and spray state of the low-temperature airflow nozzle are automatically adjusted to maintain a suitable temperature environment for agglomeration inside the cavity; when excessive down accumulation is detected inside the cavity, the feeding speed and ultrasonic vibration intensity are automatically adjusted to eliminate the accumulation state.

[0043] Example 3

[0044] like Figure 2As shown, the difference between this embodiment and embodiment 1 is that the high-voltage electrostatic generator 131 includes a plurality of parallel anode plates 1311 and cathode wires 1312, the anode plates 1311 and cathode wires 1312 are arranged alternately, the dust collection tank 132 is located at the bottom of the electrostatic dust removal chamber 13, and the bottom of the dust collection tank 132 is provided with a spiral discharge mechanism 1321.

[0045] In this embodiment, a high-voltage electric field is formed between the anode plate 1311 and the cathode wire 1312, causing the dust particles passing through the electrostatic dust removal chamber 13 to become charged. Under the influence of the electric field, the charged dust particles move towards the anode plate 1311 and are adsorbed onto it, then fall into the dust collection trough 132 below. The screw discharge mechanism 1321 can automatically discharge the collected dust, eliminating the need for manual cleaning, improving production efficiency, and preventing secondary dust pollution.

[0046] The electrostatic dust removal control method in this embodiment is as follows: The central control unit adjusts the output voltage of the high-voltage electrostatic generator component according to the down dust content fed back by the online detection module, so as to adapt to the dust removal needs of different dust contents; the screw discharge mechanism is automatically started according to the preset cycle to discharge the dust in the dust collection tank; when excessive dust accumulation is detected on the surface of the anode plate, the dust cleaning operation is automatically performed to ensure dust removal efficiency.

[0047] Example 4

[0048] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that the self-cleaning screen assembly 22 includes multiple layers of grading screens 221 arranged at intervals along the vertical direction, a rotating cleaning brush 222 disposed above each layer of grading screens 221, and a drive motor 223 fixedly disposed on the top of the main grading chamber 21 and driving the rotating cleaning brush 222 to rotate. The aperture of the multiple layers of grading screens 221 decreases gradually from top to bottom, and the bristles of the rotating cleaning brush 222 are in contact with the upper surface of the grading screens 221.

[0049] In this embodiment, the multi-layer grading screen 221 can separate down into multiple different grades, improving grading accuracy. The drive motor 223 drives the rotating cleaning brush 222 to rotate, continuously cleaning the upper surface of the grading screen 221 to prevent the screen holes from being clogged by impurities. The bristles of the rotating cleaning brush 222 are made of a soft material that will not damage the down fibers. The progressively smaller screen hole diameter ensures that down and impurities of different particle sizes remain on different grading screens 221, achieving effective grading.

[0050] The self-cleaning screen control method in this embodiment is as follows: The central control unit drives the rotating cleaning brush to rotate continuously through the control execution module to clean the surface of the grading screen in real time; the screen hole blockage status is judged according to the pressure detection value of each layer of grading screen; when blockage occurs, the cleaning intensity of the corresponding layer rotating cleaning brush is automatically increased until the blockage is eliminated; when the screen hole blockage continues and cannot be relieved, an alarm signal is automatically issued and the feeding speed is reduced to ensure stable operation of the equipment.

[0051] Example 5

[0052] like Figure 1 and Figure 3 As shown, the difference between this embodiment and embodiment 4 is that the self-cleaning screen assembly 22 also includes a vibrator 224 disposed below each layer of grading screen 221. The vibrator 224 is electrically connected to the central control unit 4. The edge of the grading screen 221 is provided with an elastic connector 225. The grading screen 221 is connected to the inner wall of the main grading chamber 21 through the elastic connector 225.

[0053] In this embodiment, the vibrator 224 causes the grading screen 221 to vibrate slightly, further promoting the dispersion and grading of down and improving the grading effect. The elastic connector 225 buffers the impact of vibration on the main grading chamber 21, reducing noise and vibration during equipment operation. The central control unit 4 can adjust the vibration frequency and amplitude of the vibrator 224 according to the characteristics of the down to achieve the best grading effect.

[0054] The screen vibration control method in this embodiment is as follows: The central control unit adjusts the vibration parameters of the vibrators below each layer of grading screens according to the particle size distribution and moisture content of the down raw materials through the control execution module to adapt to the grading requirements of down with different characteristics; it adopts intermittent vibration mode to avoid damage to down fibers caused by continuous vibration; when excessive down accumulation is detected on the screen surface, the vibration intensity of the corresponding layer vibrator is automatically increased to accelerate down dispersion and passage.

[0055] Example 6

[0056] like Figure 1 and Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the airflow generating component 23 includes a main fan 231, an annular air duct 232 connected to the outlet of the main fan 231 and disposed below all the graded screens 221, and a plurality of airflow nozzles 233 disposed on the annular air duct 232. The airflow nozzles 233 spray upward, and the plurality of airflow nozzles 233 are electrically connected to the central control unit 4 respectively.

[0057] In this embodiment, the airflow generated by the main fan 231 is distributed to each airflow nozzle 233 through the annular air duct 232. The airflow nozzles 233 spray airflow upwards, forming a uniform upward airflow that penetrates all screen layers within the main grading chamber 21. This upward airflow suspends the down feathers, reducing friction between the down feathers and the screen, and minimizing down damage. The central control unit 4 can adjust the spray angle and airflow speed of each airflow nozzle 233 according to the characteristics of the down feathers to achieve the optimal grading effect.

[0058] The airflow grading control method in this embodiment is as follows: The central control unit adjusts the main fan speed and the opening of each airflow nozzle through the control execution module based on the down loft and grading accuracy feedback from the online detection module, so as to form a uniform and stable rising airflow in the main grading chamber; combined with the position of each grading screen, the airflow state of the airflow nozzle in the corresponding area is adjusted to form a gradient airflow field; when the grading accuracy is not up to standard, the airflow operation parameters are automatically fine-tuned until the grading accuracy meets the requirements.

[0059] Example 7

[0060] like Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the inner diameters of the first-stage cyclone separator 24, the second-stage cyclone separator 25 and the third-stage cyclone separator 26 decrease sequentially, and the air inlet height of each stage of the cyclone separator increases sequentially. Each stage of the cyclone separator is provided with an impurity collection chamber 27 at its bottom.

[0061] In this embodiment, the first-stage cyclone separator 24 has the largest inner diameter and generates the least centrifugal force, enabling it to separate impurities with higher density. The second-stage cyclone separator 25 has the next largest inner diameter and generates a moderate centrifugal force, enabling it to separate impurities with moderate density. The third-stage cyclone separator 26 has the smallest inner diameter and generates the greatest centrifugal force, enabling it to separate impurities with lower density. The progressively increasing inlet height ensures that down particles of different sizes enter the corresponding cyclone separators sequentially, improving impurity removal efficiency. The separated impurities fall into the impurity collection chamber 27 for centralized processing.

[0062] This embodiment uses a multi-stage cyclone separation control method: The central control unit adjusts the opening of the inlet baffle of each stage of the cyclone separator according to the down flow rate and impurity content at the outlet of the main grading chamber, thereby controlling the airflow state entering each stage of the cyclone separator and matching the separation requirements of impurities of different densities; when the impurity removal efficiency of a certain stage of the cyclone separator is detected to be insufficient, the airflow operating parameters of that stage are automatically adjusted to improve the impurity removal effect.

[0063] Example 8

[0064] like Figure 3 and Figure 4As shown, the difference between this embodiment and Embodiment 1 is that: the online detection module 32 includes an optical sensor 321, a weight sensor 322, a fluffiness sensor 323, and a moisture sensor 324; the optical sensor 321, weight sensor 322, fluffiness sensor 323, and moisture sensor 324 are all electrically connected to the central control unit 4; the collection pipe 31 is equipped with multiple electric valves 34 corresponding one-to-one with the sorting collection bins 33, and the electric valves 34 are electrically connected to the central control unit 4; the central control unit 4 includes a data acquisition module 41, a data processing module 42, a control execution module 43, and a storage module 44; the data acquisition module 41 is electrically connected to the online detection module 32, the data processing module 42 is electrically connected to the data acquisition module 41 and the storage module 44 respectively, and the control execution module 43 is electrically connected to the data processing module 42.

[0065] In this embodiment, optical sensor 321 is used to detect the color and impurity content of the down, weight sensor 322 is used to detect the weight of the down, loft sensor 323 is used to detect the loft of the down, and moisture sensor 324 is used to detect the moisture content of the down. Data acquisition module 41 collects these detection data and transmits them to data processing module 42. Data processing module 42 analyzes and processes the data to determine the quality grade of the down, and simultaneously calls preset parameters stored in storage module 44 to match the optimal operating mode. Control execution module 43 controls the opening and closing of corresponding electric valves 34 according to the judgment result, sending down of different qualities into the corresponding sorting and collection bins 33 respectively. Central control unit 4 can also automatically adjust the operating parameters of each unit according to the detection results to ensure the stability of product quality.

[0066] This embodiment uses an intelligent collection control method: a data acquisition module collects real-time detection data from optical sensors, weight sensors, loft sensors, and moisture sensors; a data processing module processes the collected data and compares it with pre-stored standard parameters for each quality grade in the storage module to determine the current down quality grade; a control execution module, based on the determination result, pre-controls the opening of the electric valve of the corresponding classification collection bin and closes the other valves to achieve accurate classification collection; when the down quality grade changes, the opening and closing state of the electric valve is automatically switched; when the classification collection bin is detected to be full, it automatically switches to the standby collection bin and issues a reminder signal.

[0067] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-gradient non-destructive grading and impurity removal integrated device for down feathers, comprising a pretreatment unit (1), a multi-gradient grading and impurity removal unit (2), and an intelligent collection unit (3) connected in sequence, characterized in that: It also includes a central control unit (4) which is electrically connected to the pretreatment unit (1), the multi-gradient graded impurity removal unit (2), and the intelligent collection unit (3); 1) a self-cleaning screen assembly (22) inside, an airflow generating assembly (23) connected to the bottom of the main grading chamber (21), and a first-stage cyclone separator (24), a second-stage cyclone separator (25), and a third-stage cyclone separator (26) connected in sequence to the side wall of the main grading chamber (21); The intelligent collection unit (3) includes a collection pipe (31) connected to the outlet of each cyclone separator, an online detection module (32) installed on the collection pipe (31), and multiple classified collection bins (33) connected to the end of the collection pipe (31).

2. The integrated device for multi-gradient non-destructive grading and impurity removal of down feathers according to claim 1, characterized in that: The inner wall of the low-temperature ultrasonic dispersing cavity (12) is provided with a heat insulation layer (123). The ultrasonic vibration assembly (121) includes multiple ultrasonic vibration plates (1211) arranged alternately in the vertical direction. Each ultrasonic vibration plate (1211) is electrically connected to the central control unit (4). The low-temperature airflow nozzles (122) are evenly distributed along the circumference of the low-temperature ultrasonic dispersing cavity (12), and the low-temperature airflow nozzles (122) spray upward at an angle with the vertical direction.

3. The integrated device for multi-gradient non-destructive grading and impurity removal of down feathers according to claim 1, characterized in that: The high-voltage electrostatic generator assembly (131) includes multiple parallel anode plates (1311) and cathode wires (1312), which are arranged alternately. The dust collection tank (132) is located at the bottom of the electrostatic dust removal chamber (13), and a spiral discharge mechanism (1321) is provided at the bottom of the dust collection tank (132).

4. The integrated device for multi-gradient non-destructive grading and impurity removal of down feathers according to claim 1, characterized in that: The self-cleaning screen assembly (22) includes multiple layers of graded screens (221) spaced apart in the vertical direction, a rotating cleaning brush (222) disposed above each layer of graded screens (221), and a drive motor (223) for driving the rotating cleaning brush (222) to rotate. The aperture of the multiple layers of graded screens (221) decreases gradually from top to bottom, and the bristles of the rotating cleaning brush (222) are in contact with the upper surface of the graded screens (221).

5. The integrated device for multi-gradient non-destructive grading and impurity removal of down feathers according to claim 4, characterized in that: The self-cleaning screen assembly (22) also includes a vibrator (224) disposed below each layer of grading screen (221). The vibrator (224) is electrically connected to the central control unit (4). The edge of the grading screen (221) is provided with an elastic connector (225). The grading screen (221) is connected to the inner wall of the main grading chamber (21) through the elastic connector (225).

6. The integrated device for multi-gradient non-destructive grading and impurity removal of down feathers according to claim 1, characterized in that: The airflow generating component (23) includes a main fan (231), an annular air duct (232) connected to the outlet of the main fan (231), and a plurality of airflow nozzles (233) disposed on the annular air duct (232). The airflow nozzles (233) spray upward, and the plurality of airflow nozzles (233) are electrically connected to the central control unit (4).

7. The integrated device for multi-gradient non-destructive grading and impurity removal of down feathers according to claim 1, characterized in that: The inner diameters of the first-stage cyclone separator (24), the second-stage cyclone separator (25), and the third-stage cyclone separator (26) decrease sequentially, and the inlet height of each stage of the cyclone separator increases sequentially. Each stage of the cyclone separator is provided with an impurity collection chamber (27) at its bottom.

8. The integrated device for multi-gradient non-destructive grading and impurity removal of down according to claim 1, characterized in that: The online detection module (32) includes an optical sensor (321), a weight sensor (322), a fluffiness sensor (323), and a moisture sensor (324); the optical sensor (321), weight sensor (322), fluffiness sensor (323), and moisture sensor (324) are all electrically connected to the central control unit (4).

9. The integrated device for multi-gradient non-destructive grading and impurity removal of down feathers according to claim 1, characterized in that: The collection pipe (31) is equipped with multiple electric valves (34) that correspond one-to-one with the classified collection bins (33), and the electric valves (34) are electrically connected to the central control unit (4).

10. The integrated device for multi-gradient non-destructive grading and impurity removal of down according to claim 1, characterized in that: The central control unit (4) includes a data acquisition module (41), a data processing module (42), a control execution module (43), and a storage module (44); the data acquisition module (41) is electrically connected to the online detection module (32), the data processing module (42) is electrically connected to the data acquisition module (41) and the storage module (44) respectively, and the control execution module (43) is electrically connected to the data processing module (42).

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