Foreign fiber cleaning device and seed cotton processing system

Abstract

The invention discloses a foreign fiber cleaning device and a seed cotton processing system, and the foreign fiber cleaning device comprises a foreign fiber image recognition part which is provided with a monitoring channel arranged from bottom to top and monitoring assemblies arranged at the two sides of the monitoring channel; the cotton outlet channel is connected to the upper end of the monitoring channel and is provided with a blowing opening and an impurity outlet opposite to the blowing opening; the cotton feeding channel is connected to the lower end of the monitoring channel; the waste cotton channel is connected to the impurity outlet; and the blowing assembly is connected to the blowing opening. According to the special-shaped limiting cleaning device, the structure is compact, and the installation and use cost is relatively low.

Description

Technical Field

[0001] This invention relates to a foreign fiber cleaning device, and also to a seed cotton processing system equipped with the foreign fiber cleaning device, wherein the foreign fiber is simply referred to as foreign fiber, commonly known as three-fiber. Background Technology

[0002] To clearly understand the principles and specific implementation of this invention, the following will first describe the seed cotton foreign fiber cleaning process based on image recognition. Figure 1 The diagram shows a process flow chart for image monitoring and cleaning of foreign fibers in seed cotton. At the first station, the dust cage of the seed cotton separator separates the fed seed cotton from the air. Under gravity, the seed cotton falls into the closed-loop valve of the seed cotton separator and is discharged from the separator by the rotation of the closed-loop valve. Under gravity, it falls into the mechanical three-fiber machine. The mechanical three-fiber machine uses a combination of double-sided mechanical winding, spiked roller loosening and cleaning, mechanical throwing, airflow adsorption cleaning, and sedimentation box diffusion to achieve the initial removal of foreign fibers and other impurities. Winding cleaning mainly removes longer foreign fibers, such as long woven bags, long drip irrigation tapes, long mulch films, and various long ropes. Spiked roller loosening cleaning can remove some broken cotton stalks, broken cotton leaves, and fine, heavy impurities such as dust. Airflow adsorption cleaning mainly removes shorter foreign fibers, especially flaky impurities, such as mulch films, poultry feathers, plastic bag pieces, and hair.

[0003] The seed cotton is cleaned by a mechanical three-fiber machine, and after a drying process, it is sucked into the second station by a downward-suction inclined seed cleaner. After cleaning by the downward-suction inclined seed cleaner, a large amount of infertile seeds, broken cotton stalks, broken cotton leaves, and dust are discharged under the combined action of the barbed rollers and grid. The cleaned seed cotton falls into the refining seed cleaner, which uses centrifugal force to remove impurities such as cotton stalks, bolls, cotton leaves, and dust. The impurities are thoroughly separated by the upper and lower U-shaped barbed rollers and discharged from the equipment by an auger. The cleaned seed cotton is then conveyed to the next process, the double-layer seed cleaner. The upper and lower cleaning sections of the double-layer seed cleaner use the barbed rollers and grid screening principle to separate impurities from the seed cotton, while the recovery section uses wiping and shaking combined with inertial centrifugal force to recover the fallen small cotton bolls.

[0004] Seed cotton is cleaned by a double-layer seed cleaner, dried twice, and then sucked into the third station by the image seed cotton separator. Under gravity, it falls into the cotton storage box of the image mechanical cleaning section. The storage box is used for temporary cotton storage to ensure cotton is available throughout the working width of the equipment. Two feeding rollers rotate in opposite directions to achieve uniform cotton feeding. The seed cotton fed by the feeding rollers enters the main body, first passing through a spiked roller for loosening and cleaning, and then being thrown onto a row of conveyor rollers. During the forward rotation of the conveyor rollers, impurities are removed from the seed cotton. Above the conveyor rollers is a leveling roller, the height of which is adjustable to control the cotton layer thickness. The cotton conveyed by the conveyor rollers is further loosened and cleaned by two spiked rollers, ultimately forming uniform, loose single-grain seed cotton, which is then thrown into the seed cotton channel and enters the image monitoring channel. LED lights are installed on both sides of the image monitoring channel. A high-speed linear scan camera scans the cotton seed flow. The collected image data is analyzed and processed by professional computer software. Based on the analysis results, the computer controls the high-pressure jet unit to spray the identified foreign fibers into the impurity channel for discharge, which then enters the waste cotton recycling machine. The cleaned cotton seed is then conveyed to the next process and sucked into the fourth station by a downward suction tilting cotton seed cleaner.

[0005] Chinese patent document CN117966304A discloses a high-speed uniform cotton spreading mechanism for monitoring foreign fibers in seed cotton. This mechanism is incorporated into a third workstation. Seed cotton that has undergone two drying stages is transported via an upper pipe to a seed cotton heavy impurity separator. After heavy impurity separation, the seed cotton is sent to a foreign fiber monitoring module (seed cotton foreign fiber image monitoring and cleaning device). In this type of equipment, the seed cotton foreign fiber image monitoring and cleaning device needs to be placed after the secondary drying tower. The seed cotton needs to be fed from the top and discharged from the bottom of the secondary drying tower, then pass through a relatively long pipe to enter the heavy impurity seed cotton separator before connecting with the seed cotton foreign fiber image monitoring and cleaning device. The overall pipe length is long, increasing the total investment in the equipment and requiring a large footprint. Furthermore, those skilled in the art will understand that the longer the conveying pipe, the higher the requirements for the induced draft equipment.

[0006] It should be noted that the above background technology is technical information acquired by the inventor in order to deduce the relevant technical problems or obtained in the process of designing the present invention, and does not mean that the above background technology was prior art before this application, especially the technical content of the cognition and confirmation of the relevant technical problems. Summary of the Invention

[0007] The purpose of this invention is to provide a foreign fiber cleaning device with a relatively simple structure and relatively low usage and installation costs. This invention also relates to a seed cotton processing system equipped with the foreign fiber cleaning device.

[0008] According to a first aspect of the present invention, a foreign fiber cleaning device is provided, comprising: The heterogeneous fiber image recognition unit has a monitoring channel arranged from bottom to top and monitoring components arranged on both sides of the monitoring channel; The cotton outlet channel, connected to the upper end of the monitoring channel, has a blow nozzle and a waste outlet opposite to the blow nozzle; The cotton inlet channel is connected to the lower end of the monitoring channel; Waste cotton channel, connected to the waste outlet; and A jetting assembly is connected to the jetting nozzle.

[0009] Optionally, the heterogeneous fiber image recognition unit includes an upper component and a lower component; The upper component monitors the cotton seed flow from the first side of the monitoring channel, while the lower component monitors the cotton seed flow from the second side. The first side is opposite to the second side.

[0010] Optionally, the monitoring components include: Lighting assembly for illuminating the monitoring channel with light of a predetermined color; A camera array is used to acquire video or photographs of the seed cotton stream for the purpose of extracting the location of foreign fibers.

[0011] Optionally, the monitoring component further includes a mirror assembly comprising: The first position reflector is at the same height as the viewing window used for monitoring in the monitoring channel, and has a first angle with the horizontal plane, and has a first mirror image of the cotton seed flow corresponding to the viewing window; The second position reflector is offset above or below the viewing window and has a second mirror image corresponding to the first mirror image of the cotton seed flow; Accordingly, the camera array is used to acquire the second image, and the first optical axis of the camera array is either horizontal or vertical.

[0012] Optionally, the lighting assembly includes a front light assembly and a back light assembly, wherein the front light assembly is on the same side as the paired camera array, and the back light assembly is located on the opposite side of the paired camera array; The front light component includes a white light group and a purple light group; the back light component is a white light group.

[0013] Optionally, both the front light assembly and the backlight assembly include an upper light assembly and a lower light assembly; The upper and lower light groups are symmetrical about a horizontal plane, which is the upper and lower mid-surface of the viewing window. The optical axes of the upper and lower light groups intersect on the front and rear mid-surface of the monitoring channel.

[0014] Optionally, the angle between the upper optical axis corresponding to the upper lamp group and the lower optical axis corresponding to the lower lamp group is an acute angle.

[0015] Optionally, the positive light component may include a near component and a far component depending on the distance from the monitoring channel; The near-field component is a UV lamp group, and the far-field component is a white lamp group.

[0016] Optionally, the heterogeneous fiber image recognition unit is located inside a sealed housing; The cotton inlet channel, cotton outlet channel, waste cotton channel, and blowing assembly are located outside the sealed housing.

[0017] According to a second aspect of the present invention, a seed cotton processing system is provided for processing foreign fibers in seed cotton, the seed cotton processing system comprising: The foreign fiber cleaning device described in the first aspect of the present invention; A drying tower is used to dry seed cotton conveyed from upstream process equipment, and to send the dried seed cotton to the foreign fiber cleaning device through the cotton inlet channel; and A waste cotton recycling device is connected to the waste cotton channel to recycle seed cotton mixed with foreign fibers.

[0018] Optionally, the drying tower is connected to the cotton inlet channel via a seed cotton flow rate regulating channel.

[0019] Optionally, the upper side of the seed cotton flow rate regulating channel has a bypass connected to the atmosphere; The width of the bypass connected to one end of the speed control channel is the same as the width of the speed control channel at the corresponding position. Accordingly, the bypass is equipped with an opening adjustment device.

[0020] Optionally, the opening adjustment device is configured as follows: A fixing plate is provided at the entrance of the bypass, and the fixing plate has a first group of holes distributed in a row and column matrix manner; An adjustment plate is provided, which constitutes an insert plate for column adjustment, and the insert plate has a second group of holes distributed in the same row and column matrix as the fixed plate.

[0021] Optionally, the seed cotton flow rate regulation channel is a rectangular pipe, and a pair of sides of the rectangular pipe are horizontal. Correspondingly, the horizontal side gradually increases in the direction of seed cotton flow, while the other pair of sides gradually decreases.

[0022] According to an embodiment of the present invention, the foreign fiber cleaning device has the cotton inlet channel located on the lower side of the foreign fiber cleaning device, while the cotton outlet channel is located on the upper side. Under these conditions, the seed cotton after secondary drying can be fed into the foreign fiber cleaning device through a relatively short pipe, shortening the length of the cotton conveying pipe and reducing space occupation. Because the pipe is shorter, the pipe's own cost decreases, and since it is installed at a lower position, the overall installation cost is also relatively low. Simultaneously, the shorter pipe also reduces the load on the corresponding fan, resulting in relatively low operating costs. Attached Figure Description

[0023] Figure 1 This is a process flow diagram for image monitoring and cleaning of foreign fibers in seed cotton.

[0024] Figure 2 This is a schematic diagram of the seed cotton processing system in one embodiment.

[0025] Figure 3 This is a schematic diagram of the heterogeneous fiber cleaning device in one embodiment.

[0026] Figure 4 This is a schematic diagram of the heterogeneous fiber image recognition unit in one embodiment.

[0027] Figure 5 This is a schematic diagram of the second and fourth light box structures in one embodiment.

[0028] Figure 6 This is a schematic diagram of the structure of the first and third light boxes in one embodiment.

[0029] Figure 7 This is a schematic diagram of the camera arrangement in one embodiment.

[0030] Figure 8 This is a schematic diagram illustrating the connection principle between the heterogeneous fiber cleaning device and the waste cotton recycling machine in one embodiment.

[0031] Figure 9 This is a schematic diagram of the right-side structure of the flow regulation channel in one embodiment.

[0032] Figure 10 This is a schematic diagram of the three-dimensional structure of the flow regulation channel in one embodiment.

[0033] Figure 11 This is a schematic diagram of the air supply inlet structure in one embodiment.

[0034] Figure 12 This is a schematic diagram of the insert slot structure in one embodiment.

[0035] Figure 13 This is a schematic diagram of the structure of the fixed plate and the insert plate when the air supply port is in the maximum air supply state in one embodiment.

[0036] Figure 14 This is a schematic diagram of the structure of the fixed plate and the insert plate when the air supply port is in the state of medium air supply in one embodiment.

[0037] Figure 15 This is a schematic diagram of the structure of the fixing plate and the insert plate when the air inlet is completely closed in one embodiment.

[0038] Figure 16 This is a flowchart of the cotton processing production line.

[0039] In the diagram: 1. Second waste cotton blower, 2. Recycled cotton blower, 3. Waste cotton flow rate regulating channel, 4. Waste cotton cleaning machine, 5. Waste cotton separator, 6. Seed cleaning machine, 7. Seed cotton flow rate regulating channel, 8. Drying tower, 9. Foreign fiber cleaning device, 10. Waste cotton recycling machine, 11. Support frame, 12. Second light box, 13. Fourth reflector, 14. Third reflector, 15. Second camera array, 16. Third light box, 17. First waste cotton blower, 18. Waste cotton channel, 19. Cotton outlet channel, 20. Spray valve assembly, 21. Air tank, 22. Fourth light box, 23. First light box, 24. Monitoring box, 25. Second reflector, 26. First camera array. 27. First reflector; 28. Monitoring channel; 29. ​​Cotton inlet channel; 30. First focal line; 31. First lamp holder; 32. First lamp group; 33. First background plate; 34. Second lamp group; 35. Third lamp group; 36. Second focal line; 37. Fourth lamp group; 38. Second lamp holder; 39. Fifth lamp group; 40. Optical path channel; 41. Sixth lamp group; 42. First identification system; 43. Second identification system; 44. Outlet flange; 45. Cotton passage; 46. Flow regulation channel; 47. Inlet flange; 48. Air supply port; 49. Flanged edge; 50. Fixing plate; 51. Insertion plate slot; 52. Insertion plate; 53. Position fixing hole; 54. Position movable hole. Detailed Implementation

[0040] To facilitate understanding of the present invention, a more detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that the removal of foreign fibers from seed cotton can typically be completed at multiple workstations, while the foreign fibers suitable for removal in the embodiments of the present invention are mainly relatively lightweight foreign fibers such as mulch film. Meanwhile, the technology of using image recognition to blow identified foreign fibers into the predetermined waste cotton channel 18 via compressed air is a relatively mature technology. For example, the "Cotton Foreign Fiber Cleaning Technology.PPT" uploaded to Doc88 on December 10, 2016 (link: https: / / www.doc88.com / p-6971377942667.html) systematically introduced the cotton foreign fiber cleaning technology, explained the photoelectric recognition principle for foreign fibers, and the principle of optical CCD monitoring of foreign fibers. Pages 15-26 of the PPT introduced the basic structure and principle of several common foreign fiber detection machines abroad. Currently, the foreign fiber detection machine from the Swiss company Jossi shown on pages 15 and 16 of the PPT (i.e., the foreign fiber cleaning device described in the embodiments of this invention) is widely used in China. The basic technology of foreign fiber detection machines produced domestically is mostly derived from the foreign fiber detection machine technology of the Swiss company Jossi.

[0041] Given that current cotton foreign fiber cleaning devices are very mature and their basic principles are well known to those skilled in the art, a considerable amount of technical literature, including patent documents, has been generated. Examples include Chinese patent documents CN117626483A, CN117448990A, CN113403691, CN217600928U, and "Research and Application of Online Cotton Foreign Fiber Cleaning Equipment in Cotton Processing Production Lines," *China Cotton Processing*, 2020, No. 1, by Kang Yuguo and Li Wenxia. In the embodiments of this invention, the focus is on describing the improved parts; for other undescribed parts, existing structures or configurations can be used.

[0042] The cotton processing equipment on a cotton processing production line has a definite orientation: front-to-back in the direction of cotton flow, and left-to-right on either side of that direction. In other words, the front-to-back, left-to-right orientation of the cotton processing equipment is fixed. The simplest way to determine this is by matching the width of the cotton processing equipment to its left-to-right orientation.

[0043] However, it should be understood that in the mechanical field, for example, "up" and "down" do not specifically refer to being directly up or down, but usually indicate a difference in elevation. Furthermore, in the embodiments of this invention, "up," "down," and other terms such as left, right, inside, outside, front, and back, as well as similar expressions, are for illustrative and explanatory purposes only, and are intended to prevent misunderstanding by those skilled in the art.

[0044] Similarly, statements that are mutually explanatory, such as vertical or horizontal, are also for the purpose of explanation or clarification.

[0045] Additionally, to facilitate the description of the relationship between one component or component and another component or component shown in the accompanying drawings, spatially relative terms, such as "lower," "upper," and similar terms, may be used in embodiments of the invention. It should be understood that the spatially relative terms are intended to cover different orientations of the device during use and operation, in addition to those depicted in the accompanying drawings.

[0046] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0047] Furthermore, as a special note, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] In addition, in the field of mechanics, the front-to-back direction is also called the head-to-tail direction, longitudinal direction, or length direction, while the left-to-right direction is also called the left-to-right direction, transverse direction, or width direction.

[0049] It should be understood that in the field of mechanics, standard geometric terms are typically used to describe approximate mechanical structures, without implying that the mechanical mechanism possesses the exact geometric characteristics corresponding to those terms. For example, the bolt head of a hexagonal head bolt is actually a hexagonal prism, and the ends of the bolt head are rounded.

[0050] See Figure 1 and Figure 16 ,as well as Figure 2 It is known that cotton needs to be dried before entering the foreign fiber cleaning device to reduce the affinity between foreign fibers and cotton fibers, making it easier to separate them from the seed cotton. However, for example, drying tower 8 is usually fed from the top and discharged from the bottom, meaning the discharge port of drying tower 8 is relatively low. Referring to the aforementioned cotton foreign fiber cleaning technology.PPT, the cotton inlet of the foreign fiber detector is generally located at the top. Under this condition, drying tower 8 needs to use three bends in conjunction with a vertical pipe to connect to the cotton inlet of the foreign fiber detector. The bend effect will accumulate, and a separate vertical cotton conveying pipe is also required, resulting in a relatively long overall pipeline and increased flow resistance.

[0051] In the embodiments of the present invention, the number of bends is reduced to one by using a bottom feeding method, which will inevitably simplify the vertical cotton conveying pipe and shorten the total pipe length. Under these conditions, energy consumption will be reduced, and due to the simplified structure, the installation cost and subsequent maintenance cost will also be reduced accordingly.

[0052] Accordingly, such as Figure 3 An example of a foreign fiber cleaning device has a cotton inlet channel 29 located at the bottom, so that it can be used when connected to its upstream drying tower 8. Figure 2 The method shown is a direct connection at the bottom, rather than going around to the top of the foreign fiber cleaning device via a vertical cotton conveying pipe, which simplifies the use of one vertical cotton conveying pipe and two bends.

[0053] Furthermore, in an embodiment of the present invention, the foreign fiber cleaning device includes a foreign fiber image recognition unit, which can be a conventional foreign fiber image recognition unit, and a monitoring channel 28 arranged in the vertical direction. In an embodiment of the present invention, a monitoring channel 28 arranged from bottom to top is adopted, and the circulating seed cotton is fed from bottom to top.

[0054] Meanwhile, in conjunction with the monitoring channel 28, the heterogeneous fiber image recognition unit also includes monitoring components arranged on both sides of the monitoring channel 28, which are the front and rear sides of the monitoring channel 28.

[0055] It should be noted that the monitoring channel 28 is a rectangular tube with a relatively large length-to-width ratio, generally between 9:1 and 23:1, with 14.5:1 being the most common. The longitudinal direction here corresponds to the transverse direction of the foreign fiber cleaning device. In contrast, the monitoring channel can be understood as a flat, vertically arranged pipe.

[0056] cotton outlet channel 19 and cotton inlet channel 29 are in Figure 3 The middle section consists of two curved sections, wherein the cotton outlet channel 19 is connected to the upper end of the monitoring channel 28 and is adapted to the blower assembly, and a blower nozzle is opened at a predetermined position in the cotton outlet channel 19, while a debris outlet is opened on the wall of the cotton outlet channel 19 opposite to the blower nozzle.

[0057] The waste outlet connects to the waste cotton channel 18. Foreign fibers ejected by compressed air enter the waste cotton channel 18. During this process, some small cotton buds or loose cotton petals may also be ejected, thus... Figure 2 In the illustrated structure, the waste cotton channel 18 is also equipped with a recycling device to facilitate the recycling of seed cotton mixed with foreign fibers.

[0058] In some embodiments, the waste cotton channel 18 can be connected to a predetermined compartment to facilitate centralized processing of waste cotton. This is because the proportion of foreign fibers is relatively low, even if... Figure 8 As shown, even when multiple foreign fiber cleaning machines share a single waste cotton recycling machine, the relatively low amount of waste cotton may still lead to waste in the recycling machine. Therefore, centralized processing after collecting waste cotton has its better application scenarios. Figure 8The foreign fiber cleaning machine mentioned in this invention is an abbreviation for the foreign fiber cleaning device in this embodiment of the invention, and is a component of the seed cotton processing system in this embodiment of the invention.

[0059] The method of blowing air to remove the located foreign fibers is a standard practice in this field and will not be elaborated upon here.

[0060] exist Figure 3 In the illustrated structure, the cotton inlet channel 29, in the form of a bent tube, is connected to the lower end of the monitoring channel 28. The cotton inlet channel 29... Figure 2 The illustrated structure is connected to the drying tower 8 to introduce seed cotton that has undergone secondary drying. It should be noted that in some implementations, the seed cotton cleaned using a foreign fiber cleaning device may also come from seed cotton that has undergone primary drying, and this method can also be used in some embodiments of the present invention.

[0061] Regarding the image recognition of foreign fibers, traditional recognition methods generally employ a single-sided recognition approach, which involves placing a camera array on either the front or rear side of the monitoring channel 28. However, the monitoring channel 28 typically has a front-to-back dimension of around 110 mm, resulting in a relatively large thickness of the cotton seed flow. Although the cotton seed flow may not form a continuous flow, it can still cause visual obstruction, affecting the monitoring of foreign fibers located on the other side.

[0062] exist Figure 3 and Figure 4 In the illustrated structure, the heterogeneous fiber image recognition unit includes an upper component and a lower component; in Figure 4 The image is represented by two sets of heterogeneous fiber image recognition units arranged in the upper and lower positions, such as the first camera array 26 shown in the figure, and the first light box 23 and the second light box 12 matched with the first camera array 26. Figure 4 The second camera array 15 shown is equipped with a third light box 16 and a fourth light box 22.

[0063] Using a staggered arrangement between the upper and lower components helps avoid mutual interference between the monitoring of the upper and lower components.

[0064] At the same time, such as Figure 4 As shown, since the upper component is equipped with two light boxes and the lower component is also equipped with two light boxes, the cotton flow can be illuminated from both the front and back, which can more effectively identify foreign fibers and their positions. When there are a total of four light boxes, the vertical arrangement can effectively avoid positional interference during assembly.

[0065] For ease of description, the position of the upper component is designated as the first side of monitoring channel 28, for monitoring the seed cotton flow from the first side. The lower component is located on the second side of monitoring channel 28, for monitoring the seed cotton flow from the second side. The first side and the second side are located at the front and rear sides of monitoring channel 28, respectively.

[0066] Figure 4 In the process, the monitoring channel 28 is adapted to the position of the monitoring component and is a transparent shell. Due to the influence of the assembly position and monitoring distance, when the camera array is relatively close to the monitoring channel 28, it will inevitably affect its field of view. An excessively small field of view will affect the accuracy of monitoring.

[0067] In a preferred embodiment, the monitoring component further includes a reflector group. The configuration of the reflector group extends the overall optical path, thereby expanding the field of view of the camera array and facilitating more accurate identification of heterogeneous fibers.

[0068] Accordingly, the mirror assembly includes: A first position reflector is positioned at the same height as the corresponding viewing window used for monitoring in the monitoring channel, and forms a first angle with the horizontal plane, thus having a first mirror image of the cotton seed flow corresponding to the viewing window; the first angle with the horizontal plane is used to reflect, for example, horizontally emitted light upwards or downwards. The cotton seed flow has a first mirror image on the first position reflector.

[0069] The reflector group also includes a second position reflector, which is located on the exit path of the optical axis corresponding to the viewing window area on the first position reflector. Since the first position reflector forms a first angle with the horizontal plane, the second position reflector must be offset above or below the viewing window in the vertical direction. Since it is located on the exit path of the first position reflector with the corresponding optical axis, it has a second mirror image corresponding to the first mirror image of the cotton seed flow.

[0070] At this point, the camera array mainly needs to extract images or video streams for the second radial direction, while the output path of the corresponding optical axis is based on the second position reflector.

[0071] For ease of arrangement, the first optical axis of the camera array is either horizontal or vertical.

[0072] It should be known that, since light has a certain degree of divergence, the optical axis is usually determined by the center line of the light path for ease of calculation. This is common knowledge in the field of optics. For example, for a lens, the optical axis is usually determined by the axis of the lens. Although the angle of view will affect the range of the scene captured, the optical axis is always fixed.

[0073] In addition, such as Figure 8 As shown, the transverse direction of the foreign fiber cleaning device is relatively large, generally between 1200mm and 2500mm, and is often arranged in a transverse array of cameras to ensure transverse coverage of the cotton flow. Under these conditions, the aforementioned first position reflector forms a first angle with the horizontal plane, similar to a reflector deflected about the transverse axis and facing the viewing window, forming a first angle with the horizontal plane.

[0074] Based on two reflections, the two camera arrays can acquire the second image in the second position reflector under the condition that the optical axis is vertical or horizontal.

[0075] exist Figure 4 In the illustrated structure, the optical axis of the second camera array 15 is vertical and the optical axis of the first camera array 26 is horizontal. Those skilled in the art can make an adaptive selection based on the assembly space and the positional relationship with other components.

[0076] As mentioned above, in a preferred embodiment, supplemental lighting is applied to both the front and back sides of the seed cotton stream to improve the success rate of the camera array in identifying heterogeneous fibers. Figure 4 In the illustrated structure, each recognition position has two sets of light boxes. The upper and lower components each include a set of front light components and a set of back light components to more fully distinguish cotton fibers from foreign fibers optically, thereby facilitating the subsequent recognition algorithm's identification after the camera array acquires the corresponding images.

[0077] Since the subsequent recognition algorithms are common knowledge, they will not be described in detail here. In the embodiments of the present invention, the focus is on the layout of the corresponding components, without involving the improvement of the recognition algorithm.

[0078] The front lighting component includes a white light group and a violet light group; the backlight component is a white light group. The violet light emits light with a relatively short wavelength and poor penetration, but it is advantageous for frontal recognition. Here, "frontal" refers to the area relative to the accompanying camera array, such as... Figure 4 The first camera array 26 shown on the right side of the figure is the front side of the figure with respect to the first camera array 26.

[0079] from Figure 5 and Figure 6 As can be seen, both the front light assembly and the backlight assembly include upper and lower light assemblies. Among them, Figure 5 The diagram shows an example structure of the second light box 12 and the fourth light box 22. Both light boxes are backlit light boxes, and the lamp assemblies they are equipped with are all backlit lamp assemblies. Figure 6 The diagram shows an example structure of the first light box 23 and the third light box 16, all of which contain positive light groups and are located on the same side of the monitoring channel 28 as the corresponding camera array.

[0080] The following does not distinguish between front light groups and backlight groups; it only considers the light groups included. Figure 5 and Figure 6 The illustrated structure is arranged in a symmetrical manner. The corresponding symmetrical plane is a horizontal plane, which is the upper and lower mid-planes of the viewing window. If the viewing window is not set up in a symmetrical manner, it can be designated as the upper and lower mid-planes of the monitoring area.

[0081] Because the upper and lower light groups, which are included in the front and backlight groups, are arranged symmetrically, and are angled relative to the horizontal plane (i.e., their corresponding optical axes are angled), this ensures that both the upper and lower light groups project onto the same target. Therefore, the optical axes of the upper and lower light groups, which are included in the same front or backlight group, intersect on the front and rear mid-surface surfaces of monitoring channel 28. Figure 5 and Figure 6 The details are clearly shown in the image, so I will not repeat them here.

[0082] By symmetrically arranging the upper and lower light groups, the light output path of monitoring channel 28 corresponding to the camera array can be avoided.

[0083] In addition Figure 5 and Figure 6 As can be seen in the illustrated structure, the angle between the upper optical axis corresponding to the upper lamp group and the lower optical axis corresponding to the lower lamp group is an acute angle. Under the condition of relatively compact structure, it can effectively cover the predetermined monitoring area and improve the utilization rate of light.

[0084] Figure 6 As shown above, this is a positive beam lamp assembly. In embodiments of the present invention, it is configured as a component and can be referred to as a positive beam assembly. This positive beam assembly includes a near component and a far component depending on the distance from the monitoring channel; and the near component and the far component use lamps of different colors. The near-field component is a UV lamp group, and the far-field component is a white lamp group.

[0085] As mentioned earlier, for monitoring channel 28, the seed cotton flowing inside needs to be suitable for supplemental lighting and to be photographed by a camera array. At least the predetermined monitoring area should be made of transparent material. However, cotton processing plants are often in relatively harsh environments with relatively high dust content. In order to reduce dust adhesion to the predetermined monitoring area, the foreign fiber image recognition unit is set in a sealed shell.

[0086] In addition, the cotton inlet channel 29, cotton outlet channel 19, waste cotton channel 18 and the blowing assembly are all located outside the sealed housing for easy maintenance.

[0087] Figure 2 As shown, a seed cotton processing system is used to process foreign fibers in seed cotton, while protecting the foreign fiber cleaning device described in the embodiments of the present invention.

[0088] It should be understood that since multiple identical processing devices are often installed side-by-side on cotton processing production lines, such as multiple seed cotton cleaning machines, the foreign fiber cleaning device can correspond one-to-one with, for example, the seed cotton cleaning machine. However, as mentioned earlier, the separated foreign fibers may contain some seed cotton, but the amount is relatively small. The waste cotton produced by multiple foreign fiber cleaning devices can be sent to a single waste cotton recycling machine 10 for processing, as already mentioned above, and will not be repeated here.

[0089] Accordingly, a drying tower 8 is provided to dry the seed cotton conveyed from the upstream process equipment, and the dried seed cotton is sent to the foreign fiber cleaning device through the cotton inlet channel 29.

[0090] Similarly, the waste cotton recycling machine 10 is also a general process equipment in this field, and will not be described in detail here.

[0091] Given that it is difficult to ensure the stability of the seed cotton flow rate in the cotton conveying process, in a preferred embodiment, the drying tower 8 is connected to the cotton inlet channel 29 through a seed cotton flow rate regulating channel.

[0092] Regarding the seed cotton flow rate regulation channel, hereinafter referred to as the regulation channel, in Figure 9 and Figure 10 The illustrated structure is represented by a cotton passage 45 with an inlet flange 47 and an outlet flange 44. Figure 9 and Figure 10 The structure of the cotton passage 45 shown is roughly similar to the triangular box in cotton processing equipment, but it has an additional air supply structure, such as... Figure 9 and Figure 10 The flow regulation channel 46 shown constitutes Figure 9 and Figure 10 It is a bypass of the cotton passage 45 shown, and is located on the upper side of the cotton passage 45.

[0093] Correspondingly, the width of the bypass connected to the speed control channel is the same as the width of the speed control channel at the corresponding position. Furthermore, the bypass is equipped with an opening adjustment device to adjust the make-up air volume. When the make-up air volume is relatively large, the seed cotton entering the cotton passage 45 will be accelerated; conversely, it will be decelerated. That is, by controlling the make-up air volume, the flow rate of the seed cotton stream can be controlled, thereby controlling the flow rate per unit time.

[0094] In embodiments of the present invention, a relatively simple make-up air volume adjustment structure is adopted, specifically, as follows: Figure 11 and Figure 12 As shown, the opening adjustment device is constructed as follows: A fixing plate 50 is provided at the entrance of the bypass, and the fixing plate 50 has a first group of holes distributed in a row and column matrix manner, such as... Figures 13-15 The row and column matrix shown is formed by fixing the position 53.

[0095] Provide an adjustment plate, such as Figures 13-15 The insert 52 shown, from Figure 13 and Figure 15 As can be seen, the air intake volume is adjusted by misaligning the fixed position hole 53 and the movable position hole 54. Figure 13 The state shown is equivalent to the maximum opening. Figure 14 This means the opening is adjusted to approximately halfway. Figure 15 This is the state where the opening degree is 0.

[0096] Correspondingly, for example, the insert plate 52 also has position movable holes 54 arranged in the same row and column matrix. Here, position movable means that the position movable holes 54 can be adjusted in the column direction of the position fixed holes 53, following the insert plate 52. For ease of description, the group of holes formed by the position movable holes 54 is referred to as the second group of holes.

[0097] in addition Figure 11 and Figure 12 As can be seen, the insert plate groove 51 can be constructed using a flange 49 or other structural methods, requiring only the insertion plate groove 51 extending in the first hole group. At this time, adjustment and locking of the adjusted position can be achieved by the cooperation between the insert plate 52 and the insert plate groove 51 and by the friction between the two.

[0098] See Figure 10 The seed cotton flow rate regulating channel is a rectangular pipe, with one pair of horizontal sides and the other pair of vertical sides. Accordingly, the horizontal sides gradually increase in the direction of seed cotton flow, while the other pair of sides gradually decrease. With this structure, the seed cotton can be dispersed laterally.

[0099] The above description is illustrative in conjunction with the accompanying drawings and is not intended to limit the invention. Within the framework of this invention, the above embodiments or different embodiments can be combined without conflict. Although the invention has been described in detail in the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this invention.

Claims

1. A device for removing foreign fibers, characterized in that, The application relates to a ginning system, comprising: a foreign fiber image recognition unit, which comprises a monitoring channel and monitoring components arranged on both sides of the monitoring channel; an outlet channel connected to the upper end of the monitoring channel, which comprises a blowing port and a foreign fiber outlet port opposite to the blowing port; an inlet channel connected to the lower end of the monitoring channel; a waste cotton channel connected to the foreign fiber outlet port; and a blowing component connected to the blowing port. The foreign fiber image recognition unit comprises an upper component and a lower component; 2. The lint cleaning device of claim 1, wherein the upper component monitors the flow of seed cotton from the first side of the monitoring channel, and the lower component monitors the flow of seed cotton from the second side; the first side is opposite to the second side. The monitoring component comprises:

3. The bale of claim 1 or 2, wherein, a light component for irradiating the monitoring channel with light of a predetermined color; a camera array for acquiring a video or a photo of the flow of seed cotton for extracting the position of foreign fibers. The monitoring component further comprises a mirror group, which comprises:

4. The lint cleaning device of claim 3, wherein a first position mirror, which is at the same height as a perspective window of the monitoring channel for monitoring and has a first mirror image of the flow of seed cotton at a first angle with a horizontal plane; a second position mirror, which is offset to the upper side or the lower side of the perspective window and has a second mirror image corresponding to the first mirror image of the flow of seed cotton; correspondingly, the camera array is used for acquiring the second mirror image, and the first optical axis of the camera array is in a horizontal direction or a vertical direction. The light component comprises a front light component and a back light component, wherein the front light component is on the same side as the matched camera array, and the back light component is on the opposite side of the matched camera array; 5. The lint cleaning device of claim 3, wherein the front light component comprises a white light group and a violet light group, and the back light component is the white light group. The front light group and the back light group each comprise an upper light group and a lower light group; 6. The lint cleaning device of claim 5, wherein, the upper light group and the lower light group are symmetrical about a horizontal plane, the horizontal plane is the upper and lower middle plane of the perspective window, and the optical axis of the upper light group and the optical axis of the lower light group intersect on the front and back middle plane of the monitoring channel. The included angle between the upper optical axis corresponding to the upper light group and the lower optical axis corresponding to the lower light group is an acute angle.

7. The bale of claim 6, wherein, The front light component comprises a near component and a far component according to the distance from the monitoring channel; 8. The lint cleaning device of claim 5, wherein, the near component is the violet light group, and the far component is the white light group. The foreign fiber image recognition unit is located in a closed shell; 9. The lint cleaning device of claim 1, wherein, the inlet channel, the outlet channel, the waste cotton channel and the blowing component are located outside the closed shell. The seed cotton processing system comprises:

10. A seed cotton treatment system for the treatment of foreign fibers in seed cotton, comprising: a seed cotton treatment system as in any one of claims 1-9, wherein the seed cotton treatment system is configured to treat seed cotton in a seed cotton module. the foreign fiber cleaning device according to any one of claims 1 to 9; ​ a drying tower for drying seed cotton delivered by a previous process device and sending the dried seed cotton to the foreign fiber cleaning device through the inlet channel; and a waste cotton recovery device connected to the waste cotton channel for recovering seed cotton mixed with foreign fibers. The drying tower is connected to the inlet channel through a seed cotton flow speed regulating channel.

11. The seed cotton treatment system of claim 10, wherein, The upper side of the seed cotton flow speed regulating channel is provided with a bypass connected to the atmosphere; 12. The seed cotton treatment system of claim 11, wherein, the width of the bypass connected to one end of the speed regulating channel is the same as the width of the speed regulating channel at the corresponding position; correspondingly, the bypass is provided with an opening adjusting device. The opening adjusting device is configured as:

13. The seed cotton treatment system of claim 12, wherein, a fixed plate is arranged at the inlet of the bypass, and the fixed plate is distributed with a first hole group in a matrix manner. ​ The adjusting plate is arranged in the same matrix as the fixed plate.

14. The seed cotton treatment system of claim 11, wherein, The seed cotton flow speed regulating channel is a rectangular pipe, and one pair of edges of the rectangular pipe is horizontal. Correspondingly, the horizontal edges gradually increase in accordance with the seed cotton flow direction, and the other pair of edges gradually decrease.

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