System suitable for foreign fiber detection and cleaning and cotton processing production line

Abstract

The utility model discloses a system suitable for foreign fiber detection and cleaning and a cotton processing production line, and the system suitable for foreign fiber detection and cleaning comprises an image detection part which is used for detecting and removing short foreign fibers in seed cotton flow; the seed cotton flow speed adjusting device is located at the front stage of the image detection part and provided with a shell, the shell is provided with a guide-in opening and a guide-out opening used for being connected with the image detection part, the shell is gradually narrowed in the front-back direction from the guide-in opening to the guide-out opening, and an air supplementing opening is formed in the front side or the rear side of the guide-in opening; the double-layer seed cleaning machine is connected to the guide-in opening in a matched mode; the mechanical three-filament machine is positioned at the front stage of the double-layer seed cleaning machine and is used for cleaning long foreign fibers in seed cotton; before seed cotton enters the image detection part, at least one seed cotton drying device is arranged. The foreign fiber detecting and cleaning system is suitable for being beneficial to spreading seed cotton.

Description

TECHNICAL FIELD

[0001] The utility model relates to a system suitable for detecting and cleaning foreign fibers on a cotton processing production line, and also relates to a cotton processing production line with the system. BACKGROUND

[0002] Foreign fibers refer to non-cotton fibers mixed into cotton, such as chemical fibers, silk, hemp, hair, plastic ropes, etc. In the cotton processing production process, foreign fibers are also called three-silk, and the concept of three-silk appeared relatively earlier, so the original range of three-silk is relatively small. Traditional three-silk includes three main components, i.e., brown silk, hemp silk, and hair silk. With the change of cotton harvesting methods, three-silk is not enough to generalize foreign fibers, so the name of three-silk is gradually replaced by the more standardized foreign fibers, but three-silk is still used as a common name.

[0003] In the early days, domestic cotton harvesting was mainly carried out by manual picking. The impurity rate of the harvested seed cotton is very low, and almost no cleaning is needed. With the wide popularization of mechanical cotton picking, although the efficiency of cotton harvesting is greatly improved, the impurity rate of the harvested seed cotton is relatively high, and the types of impurities mixed into the seed cotton are relatively more. Therefore, the seed cotton or lint needs to be cleaned at multiple stations of the cotton processing production line, usually not less than seven times. One or two processes are used for cleaning foreign fibers in the seed cotton. Once the ginning is completed, it is difficult to clean foreign fibers, so it is necessary to clean foreign fibers before the ginning station of the cotton processing production line. A three-silk cleaner is usually configured before the ginning station of the cotton processing production line (executing GH / T 1064-2010, standard name: "seed cotton foreign fiber cleaner", published on August 30, 2010, implemented on December 1, 2010, standard state: current).

[0004] The three-silk cleaning machine is generally equipped with a three-silk detection device and a cleaning device. The detection of the three-silk has been very mature, and there are relatively more detection methods. For example, under the condition that the seed cotton needs to be dried before processing, the foreign fibers will produce a specific type of chemical gas during the drying process (the drying temperature is generally about 140°C, and the foreign fibers will release chemical gas when the ambient temperature is higher than 50°C). According to the difference in the composition of the released chemical gas and the composition released by the seed cotton, qualitative and quantitative detection is further carried out by means of, for example, chromatography / mass spectrometer. For another example, the photoelectron cotton foreign fiber automatic detection and removal system developed by the Shanghai Institute of Applied Physics of the Chinese Academy of Sciences is commonly used in China. In addition, in addition to manual cleaning, the main method of cleaning the three-silk is mechanical cleaning, which mainly relies on the difference in the winding ability of the winding roller for foreign fibers and cotton fibers to clean the three-silk. The cleaning method of the winding roller is mainly for the cleaning of the long three-silk commonly known as. Another three-silk cleaning method is mainly for the cleaning of the short three-silk commonly known as, which mainly relies on the difference in the specific surface area of the short three-silk and the seed cotton, and separates the short three-silk by impact wind and projection. The two cleaning methods are generally used in combination.

[0005] As can be seen from the above description, the identification and cleaning of the three-silk first need to expose the three-silk. The three-silk cleaning machine is generally located after at least one seed cleaning process. For example, the seed cotton is generally transported between different process equipment by a cotton conveying pipeline. The cotton conveying pipeline is generally a circular pipe. The cotton processing process equipment such as the seed cleaning machine generally has a relatively large machine radius (the transverse dimension of the functional part of the cotton processing process equipment process component, and the machine radius of the seed cleaning machine can reach four meters at present, and there is a further increasing trend). In view of this, for example, the seed cotton needs to be dispersed uniformly in the transverse direction before being transported to the predetermined process equipment at the end of the cotton conveying pipeline. For example, the same is true for the three-silk cleaning machine. Only when the seed cotton is uniformly dispersed in the transverse direction can the foreign fibers be fully exposed and cleaned. The current detection and cleaning of foreign fibers is how to fully expose and clean the foreign fibers.

[0006] In view of the great influence of three wires on the quality of lint, the artificially picked three wire output lint is 300~600 yuan more expensive than the machine-identified cleaned three wire output lint per ton, from which the influence of three wires on the quality of lint can be seen. In recent years, major cotton processing machinery manufacturers have generally increased research on three wire identification and cleaning. In some implementations, a separate cotton spreading module is configured before the three wire detection station to evenly spread the seed cotton before it enters the three wire detection station. In such implementations, the cotton spreading module receives seed cotton from a seed cotton opening device through a dust removal cage, and then spreads the seed cotton evenly on a cotton net conveyor belt, which is equipped with a weighing module to control the amount of seed cotton entering the cotton net conveyor belt, thereby ensuring that the seed cotton can be evenly spread. Meanwhile, a plurality of steel brushes are provided above the cotton net conveyor belt to comb and spread the seed cotton distributed on the cotton net conveyor belt. In such implementations, an opening and cleaning part, a cotton storage box, a conveying and cleaning part, and a spike roller cleaning part are sequentially arranged from top to bottom above the cotton net conveyor belt, the process flow before the cotton net conveyor belt is complex, and occupies a large vertical space, limiting its application range, and the seed cotton spreading effect of simply relying on the cooperation of the horizontally placed cotton net conveyor belt and the steel brushes is not good. Practical new type content

[0007] Therefore, the system suitable for foreign fiber detection and cleaning is provided, and the cotton processing production line with the system is also provided.

[0008] According to a first aspect of the embodiment of the present application, a system suitable for foreign fiber detection and cleaning is provided, which comprises:

[0009] An image detection part for detecting and removing short foreign fibers in the seed cotton flow;

[0010] A seed cotton flow rate adjusting device located in front of the image detection part, having a shell with an inlet and an outlet connected with the image detection part, the shell gradually narrows from the inlet to the outlet in the front-back direction, and the front side or the back side of the inlet is provided with a wind supplementing port;

[0011] A double-layer seed cleaner connected with the inlet; and

[0012] A mechanical three wire machine located in front of the double-layer seed cleaner for cleaning long foreign fibers in the seed cotton;

[0013] Before the seed cotton enters the image detection part, at least one seed cotton drying device is adapted.

[0014] Optionally, the shell of the seed cotton flow rate adjusting device is surrounded by a front wall, a back wall, and left and right side walls, and an upper opening and a lower opening are determined, wherein the lower opening constitutes the outlet;

[0015] The upper opening is separated in the front-to-back direction to form the inlet and the air supply outlet;

[0016] The air supply vent has an opening adjustment mechanism or structure.

[0017] Optionally, the rear wall is a vertical plate, and the front wall is an arc-shaped plate or an inclined plate forming a given angle with the rear wall, so as to form the structure that gradually narrows in the front-rear direction;

[0018] Accordingly, the air supply inlet is located in front of the air inlet;

[0019] If it is an inclined plate, the lower end of the inclined plate has an arc transition section.

[0020] Optionally, in the front-to-back direction, the length ratio of the outlet to the inlet is 3:10 to 3.5:10;

[0021] The length ratio of the air intake to the air inlet is 8.1:10 to 8.7:10.

[0022] Optionally, the air supply inlet has a perforated shielding plate;

[0023] The air supply inlet is provided with a valve plate in the front-to-back direction, as well as a structure or mechanism for adjusting the valve plate in the front-to-back direction.

[0024] Optionally, the image detection unit includes:

[0025] The main body has a rectangular cross-section and is used to receive the outlet.

[0026] The seed cotton outlet tube is connected to the outlet of the main body;

[0027] Waste cotton outlet pipe is vertically connected to the front or rear side of the middle part of the main body;

[0028] An air supply pipe is provided parallel to the waste cotton outlet pipe to supply air to the main body from the upper and / or lower side of the waste cotton outlet pipe.

[0029] Optionally, the end of the make-up air pipe located above the waste cotton outlet pipe that connects to the main body is parallel to the main body, while the end that connects to the waste cotton outlet pipe and the main body is vertically connected.

[0030] The air supply pipe located below the waste cotton outlet pipe is vertically connected to the main body.

[0031] The cross-sectional area of ​​the air supply pipe located above the waste cotton outlet pipe is smaller than that of the air supply pipe located below the waste cotton outlet pipe.

[0032] Optionally, the image detection unit, the seed cotton flow rate adjustment device, the double-layer seed cleaner, and the down-suction inclined seed cleaner located in front of the double-layer seed cleaner are arranged from bottom to top at the same workstation in the workshop.

[0033] Optionally, the front stage of the downward suction inclined seed cleaner consists of a seed cleaner, a mechanical three-filament machine, and a seed cotton separator arranged from bottom to top at the first work station in the workshop, and there is a seed cotton drying device between the seed cleaner and the mechanical three-filament machine.

[0034] There is a second seed cotton drying device between the first station and the downward suction inclined seed cleaner.

[0035] According to a second aspect of the present invention, a cotton processing production line is provided, including the system for detecting and cleaning foreign fibers as described in the first aspect of the present invention.

[0036] According to an embodiment of this utility model, a system suitable for detecting and cleaning foreign fibers is designed by selecting appropriate cotton processing equipment and configuring a double-layer seed cleaner in front of the image detection unit. While removing impurities, the double-layer seed cleaner can more effectively break up the seed cotton and spread it evenly laterally, ensuring uniform lateral dispersion of the seed cotton before it enters the image detection unit and fully exposing foreign fibers. Furthermore, the seed cotton flow rate regulating device ensures that the seed cotton flow is fed into the image detection unit in a relatively thin and uniform manner, which is beneficial for cleaning short foreign fibers. Since the double-layer seed cleaner is an inherent configuration of the cotton processing production line, this utility model utilizes this inherent configuration to loosen and evenly spread the seed cotton laterally, eliminating the need for separate loosening and mechanical spreading equipment before the image detection unit, thus reducing the use of process equipment and minimizing the space occupied in the workshop. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of a short, heterogeneous fiber detection and cleaning system in one embodiment.

[0038] Figure 2 This is a schematic diagram of the adaptation structure between the seed cotton flow rate adjustment device and the image detection unit in one embodiment.

[0039] Figure 3 This is a three-dimensional structural diagram of a seed cotton flow rate regulating device in one embodiment.

[0040] Figure 4 This is a schematic diagram of the air supply cover structure in one embodiment.

[0041] Figure 5 This is a schematic diagram of a perforated plate structure in one embodiment.

[0042] Figure 6 This is a schematic diagram of the internal structure of the seed cotton flow rate regulating device in one embodiment.

[0043] Figure 7This is a flowchart of the cotton processing production line in the first embodiment.

[0044] Figure 8 This is a flowchart of the cotton processing production line in the second embodiment.

[0045] In the diagram: 1. Brush roller, 2. Double-layer seed cleaner, 3. Lower cotton guide plate, 4. Upper sixth spiked roller, 5. Upper cotton guide plate, 6. Upper cleaning section, 7. Upper grid, 8. Inlet section, 9. First cotton inlet pipe, 10. Separator, 11. Second cotton inlet pipe, 12. Lower suction inclined seed cleaner, 13. Impurity outlet chamber, 14. Upper first spiked roller, 15. Upper cotton outlet, 16. Lower cleaning section, 17. Cotton flow plate, 18. Lower first spiked roller, 19. Lower cotton outlet, 20. Lower impurity flow plate, 21. Double-layer cotton outlet pipe, 22. Seed cotton flow rate regulating device, 23. Image detection section, 24. Lower impurity discharge spiral auger, 25. Lower ash removal device. 26. Upper auger for waste removal, 27. Upper ash hopper, 28. U-shaped rack and pinion roller, 29. Image detection unit housing, 30. Lower air supply pipe, 31. Seed cotton, 32. Upper air supply pipe, 33. Leveling section, 34. Cotton handling chamber, 35. Inlet, 36. Air supply port, 37. Air supply chamber, 38. Waste cotton outlet pipe, 39. Seed cotton outlet pipe, 40. Side wall, 41. Observation window, 42. Inlet, 43. Adjustment seat, 44. Air supply cover plate, 45. Perforated plate, 46. Front wall, 47. Adjustment hole, 48. Plate body, 49. Flanged edge, 50. Handle, 51. Ventilation hole, 52. Fixing hole, 53. Outlet hole, 54. Rear wall. Detailed Implementation

[0046] It should be understood that cotton processing equipment has definite front, back, left, right, up, and down directions. Specifically, the direction corresponding to the width of the cotton processing equipment is its horizontal direction, which is also called the left-right direction or the width direction.

[0047] Within a predetermined reference plane, the direction perpendicular to the left and right directions is the front-back direction, also known as the longitudinal or length direction. Generally, one of the front-back directions is usually opposite to the operator's usual operating state, and that direction is the front.

[0048] The direction perpendicular to the reference plane is called the vertical direction, also known as the height direction.

[0049] It should be noted that, for example, the front and back directions do not require them to be directly in front or directly behind, but rather that the directions are roughly the same.

[0050] Figure 7 and Figure 8 The description of a workstation in the text refers to a predetermined space in which a group of process equipment is vertically arranged.

[0051] It should be noted that long foreign fibers refer to continuous non-cotton fibers mixed in with cotton, such as uncut chemical fiber filaments, plastic films, and intact hair. They are regular in shape and relatively long, and have obvious continuity compared to cotton fibers. Currently, the cleaning method for long foreign fibers is to use mechanical three-filament machines to wrap them.

[0052] Short foreign fibers refer to cut or broken non-cotton fiber fragments, such as short synthetic fibers, hair fragments, and hemp fibers. They are relatively short (usually in the millimeter to centimeter range), irregular in shape, and highly dispersed. Due to their small size, they are difficult to clean using winding methods, but their large surface area allows them to be cleaned using air power.

[0053] It should be understood that currently, no mechanical cleaning method can completely remove foreign fibers. In other words, the system suitable for detecting and cleaning foreign fibers based on the embodiments of this utility model cannot achieve complete cleaning. This is a typical characteristic of mechanical cleaning of foreign fibers, and no higher requirements should be put forward for this utility model. At present, the mechanical cleaning of foreign fibers is still focused on reducing the content of foreign fibers in seed cotton 31 as much as possible, but cannot achieve complete cleaning.

[0054] It should be noted that, based on the embodiments of this utility model, the improvement of the system suitable for detecting and cleaning foreign fibers is that, compared with existing cleaning methods (excluding manual cleaning), the cleaning rate of short foreign fibers is relatively higher.

[0055] In embodiments of this utility model, the system suitable for detecting and cleaning foreign fibers is a collection of some process equipment in a cotton processing production line, located before the ginning machine and after the feeding machine, and can be a collection of process equipment located between the ginning machine and the feeding machine.

[0056] In the embodiments of this utility model, Figure 1 The illustrated structure is the main body of a system suitable for detecting and cleaning foreign fibers, and can also be used as a standalone system. The smallest unit of the system includes the double-layer seed cleaner 2 (full name double-layer seed cotton cleaner), the seed cotton flow rate regulating device 22, and the image detection unit 23 shown in the figure, as well as the matching connection structure for configuring these three process devices at the same workstation.

[0057] As mentioned above, the basic principle of this utility model is to further dry the seed cotton 31 after cleaning the long foreign fibers, and then send it into the double-layer seed cleaner 2 for cleaning. With the help of the double-layer seed cleaner 2, the seed cotton can be fully dispersed (replacing the opening equipment). After the seed cotton exported from the double-layer seed cleaner 2 is combed, it is sent into the image detection unit 23, and then the short foreign fibers mixed in the seed cotton 31 are cleaned out by the wind.

[0058] The double-layer seed cleaner 2 is mainly used to fully disperse the seed cotton 31. During the cleaning process of the seed cotton 31, the seed cotton 31 will also extend to both sides, so that the seed cotton 31 is more evenly dispersed in the lateral direction of the double-layer seed cleaner 2, so that the seed cotton 31 will not be too thick in some places, making its overall thickness relatively uniform, which is conducive to the full exposure of short foreign fibers.

[0059] In view of this, the following is a full explanation of the double-layer seed cleaner 31:

[0060] As mentioned earlier, since most raw cotton is currently harvested mechanically, the impurity content in raw cotton is very high. Therefore, the entire cotton processing production line often requires more than six cleaning processes, including at least four for seed cotton and usually at least one for lint cotton. Currently, the double-layer seed cleaner 21 is also a common piece of equipment in this process.

[0061] To facilitate a general explanation, in Figure 1 In the illustrated structure, the down-suction inclined seed cleaner 12 (full name: down-suction inclined seed cotton cleaner), the double-layer seed cleaner 2, the seed cotton flow rate regulating device 22, and the image detection unit 23 are arranged in the same station. The seed cotton 31 undergoes two stages of drying before entering the down-suction inclined seed cleaner 12. The relatively dry seed cotton 31 has a reduced ability to trap impurities, which is beneficial for the removal of impurities.

[0062] See Figure 1 After being cleaned by the downward-suction inclined seed cleaner 12, most of the infertile seeds, broken cotton stalks, broken cotton leaves, and dust are discharged under the combined action of the spiked rollers and grids configured in the downward-suction inclined seed cleaner 12. The seed cotton cleaned by the downward-suction inclined seed cleaner 12 falls into the double-layer seed cleaner 21. The upper cleaning section 6 and the lower cleaning section 16 of the double-layer seed cleaner 21 use the configured spiked rollers and grids to separate the impurities from the seed cotton.

[0063] As mentioned earlier, seed cotton 31 is generally transported through a circular pipe. The diameter of the circular pipe is much smaller than the width of the seed cotton cleaner. Therefore, a triangular box or other seed cotton distribution device is often installed at the inlet of the seed cotton cleaner to facilitate the dispersion of seed cotton 31 in the machine width direction. However, this still results in a relatively large accumulation of seed cotton 31 in the middle of the machine width, while the amount of seed cotton on both sides is relatively small. Under the continuous impact of the spiked rollers, the relatively thick seed cotton flow in the middle will extend to both sides, thereby gradually making the thickness of seed cotton 31 in the lateral direction more uniform.

[0064] Seed cotton 31 falls freely from the inlet 8 of the double-layer seed cleaner 21 onto the spiked roller directly below the upper cleaning section 6. Due to the high-speed rotation of the spiked roller, the seed cotton 31 is immediately sent to the upper surface of the grid. The spikes of the spiked roller penetrate deep into the seed cotton clump, hooking and striking the clump, thus breaking down and loosening the internal cohesion of the clump. As the spiked roller of the upper cleaning section 6 rotates, the seed cotton clump moves forward along the upper grid 7 while being rubbed and rotated on the surface of the upper grid 7, and impurities in the seed cotton 31 are continuously screened out. As the spiked roller rotates, the continuously loosened seed cotton 31 is thrown to the upper sixth spiked roller 4 at the rear end of the upper cleaning section 6, and the seed cotton 31 is carried along the upper cotton guide plate 5 into the cleaning channel of the upper grid 7 by the spiked roller. The edge of the seed cotton clump rotates and rubs on the grid surface below the sixth spiked roller 4 in the upper layer, moving forward along the grid. Then, the sixth spiked roller 4 throws it to the fifth spiked roller in the upper layer, and the above action is repeated. It is then thrown to the fourth, third, second, and first spiked rollers in the upper layer. The seed cotton 31 undergoes processes such as impact, relative friction, and rolling between the six spiked rollers and the grid in the upper cleaning section 6. After these processes, impurities are discharged from the upper grid 7, completing the upper cleaning process. The seed cotton 31 then falls from the upper cotton outlet 15 into the lower cleaning section 16.

[0065] Because the upper cleaning section features a grid structure with relatively large gaps, it facilitates the discharge of impurities. During the impurity discharge process, some small cotton fibers are discharged simultaneously, passing through the upper impurity plate and entering the recovery section. The recovery section uses wiping and shaking combined with inertial centrifugal force to recover the fallen small cotton fibers. These small cotton fibers are recovered and cleaned, returning them to the 6-seed cotton stream in the upper cleaning section, reducing unnecessary losses. The recovered small cotton fibers and usable fibers are transferred to the pinning roller in the recovery section via a brush roller, and the pinning roller throws the small cotton fibers and usable fibers into the 6-seed cotton stream in the upper cleaning section.

[0066] When the seed cotton 31 moves to the end face of the grid under the sixth barn roller 4, it is thrown out along the tangential direction of the grid end face. Relying on its own weight, it falls from the upper cotton outlet onto the cotton flow plate 17 and slides down to the upper part of the first barn roller 18 at the front end of the lower cleaning section 16, falling into the lower cleaning section. Because the lower cleaning section is equipped with a grid structure with relatively small gaps, it can both remove impurities and prevent small cotton fibers from falling off. The seed cotton 31 discharged from the upper cleaning section is thrown by the first barn roller 18 at the front end of the lower cleaning section 16 to the second barn roller. The above action is repeated, and it is thrown to the third, fourth, fifth, and sixth barn rollers. When the continuously loosened seed cotton 31 is thrown to the sixth barn roller at the lower cleaning section 16, the seed cotton 31 is carried along the lower cotton board and into the cleaning channel of the lower grid by the barn roller. As the spiked rollers of the lower cleaning section 16 rotate, the edges of the seed cotton clumps rotate and rub against the surface of the lower grid while moving forward along the grid, continuously screening out impurities in the seed cotton 31. The seed cotton 31 is thrown by the sixth spiked roller of the lower cleaning section 16 to the fifth spiked roller of the lower layer, and the above action is repeated, and it is then thrown to the fourth, third, second, and first spiked rollers of the lower layer. When the seed cotton 31 moves to the triangular steel grid screen below the first spiked roller 18 of the lower cleaning section 16, it is thrown out along the tangential direction of the screen, and the impurities pass through the downflow impurity plate 20 and enter the lower impurity discharge spiral auger 24. The cleaned, uniform, loose single seed cotton enters the seed cotton flow rate regulating device 22 by gravity along the lower cotton outlet 19.

[0067] During the above process, most of the remaining impurities, such as infertile seeds, boll husks, cotton stalks, leaf debris, dust, and stunted petals, pass through the mesh of the grid and fall into the lower impurity discharge spiral auger, from which they are discharged outside the machine. More importantly, the seed cotton 31 is fully loosened under the continuous beating of the double-layer seed cleaner 2, and the cotton layer thickness becomes relatively uniform in the transverse direction.

[0068] Regarding the image detection unit 23, its main structure is a known configuration. It primarily detects short, foreign-shaped fibers mixed in with the seed cotton 31, and then, by utilizing the difference in specific surface area between the short, foreign-shaped fibers and the seed cotton 31, blows the short, foreign-shaped fibers out of the seed cotton 31, thereby... Figure 2 Waste cotton is discharged through the waste cotton outlet pipe 38 as illustrated in the example. Seed cotton 31, after being cleaned with short foreign fibers, is discharged from... Figure 2 The seed cotton is discharged through the cotton outlet tube 39 as illustrated in the example.

[0069] After being cleaned by the double-layer seed cleaner 2, the seed cotton 31 is fully opened while removing other impurities. It is also homogenized laterally so that the seed cotton flow has a relatively uniform thickness distribution in the lateral direction, thereby maximizing the thinning of the seed cotton flow. This facilitates the full exposure of short foreign fibers, which in turn allows the short foreign fibers to be cleaned by air.

[0070] Opening itself can also cause the seed cotton 31 to become scattered and result in uneven feeding. Therefore, a seed cotton flow rate adjustment device 22 is provided. The seed cotton flow rate adjustment device 22 is arranged between the double-layer seed cleaner 2 and the image detection unit 23 for combing the seed cotton flow.

[0071] Accordingly, the housing of the seed cotton flow rate regulating device 22 has an inlet 35 and an outlet 53 for connection with the image detection unit 23. Figure 2 , Figure 3 and Figure 6 As can be seen from the image, the shell gradually narrows in the front-to-back direction from the inlet 35 to the outlet 53, which is used to gather the seed cotton in the front-to-back direction so that the seed cotton 31 is fed evenly.

[0072] And in Figure 2 , Figure 3 and Figure 6 In the illustrated structure, an air inlet 36 is provided in front of the inlet 35 to facilitate the combing of the seed cotton flow. The air inlet 36 can also be located behind the inlet 35.

[0073] The following is a detailed description of the seed cotton flow rate regulating device 22:

[0074] exist Figure 3 and Figure 6 In the illustrated structure, the seed cotton flow rate regulating device 22 includes a seed cotton inlet channel (with an inlet 35), a makeup air channel (with a makeup air inlet 36), a seed cotton outlet channel (with an outlet 53), an observation and maintenance door (configured on the side wall 40 and having an observation window 41), a makeup air cover 44 configured at the makeup air inlet 36, and an adjustment structure or mechanism for adjusting the position of the makeup air cover 44. The housing of the seed cotton flow rate regulating device 22 is adapted with front and rear panel assemblies and left and right wall panel assemblies, etc.

[0075] After being cleaned by the double-layer seed cleaner 2, the seed cotton 31 presents as relatively uniform and loose single seed cotton grains, making it easy to separate foreign fibers from the seed cotton 31. The single seed cotton grains enter the seed cotton flow rate regulating device 22 by gravity along the double-layer cotton outlet pipe 21. The double-layer cotton outlet pipe 21 is a rectangular tube with a width consistent with the width of the double-layer seed cleaner 2, and is further connected to the inlet 35.

[0076] Since material transport on cotton processing production lines mainly relies on wind power, see [link / reference] Figure 8 The seed cotton 31 is regulated by the negative pressure adsorption of the seed cotton outlet pipe 39 connected to the image detection unit 23 at the next station, and by adjusting the supplementary air through the supplementary air channel to regulate the flow rate of the seed cotton 31. After the flow rate of the seed cotton 31 is reasonable and stable, the fixing screws of the supplementary air cover plate 44 are tightened. The seed cotton 31, with a stable and uniform flow rate, passes through the transparent detection channel of the LED fusion light source installed in the image detection unit 23.

[0077] See Figures 3-5 The seed cotton flow rate regulating device 22 is equipped with a perforated plate 45 at the air inlet 36. The perforated plate 45 has a certain filtering effect to prevent larger impurities from entering the air inlet 37. Furthermore, an air inlet cover 44 is provided at the air inlet. The flow rate entering the air inlet 36 is adjusted by adjusting the amount of obstruction of the perforated plate 45 by the air inlet cover 44.

[0078] The perforated plate 45 can be fixed to the air inlet 36 with screws, completely covering the air inlet 36, and is a fixed component.

[0079] exist Figure 3 In the illustrated structure, an air supply cover 44 is fitted on the outer side of the perforated plate 45. The position of the air supply cover 44 is adjustable in the front-rear direction, such as... Figure 4 As shown, the air supply cover 44 has an adjustment hole 47. The force generated by the air supply on the air supply cover 44 is the suction force that causes the air supply cover 44 to engage with the air supply port 36. Therefore, the fixing of the air supply cover 44 is relatively simple, or the reliability requirements are relatively low. Therefore, even using only a pair of screws can achieve the expected fixing purpose.

[0080] Figure 3 In addition to the side frames of the air supply vent 36, an adjustment seat 43 is also provided in the middle of the air supply vent 36. The adjustment seat 43 actually only serves a supporting function in the figure. The part used to fix the air supply cover plate 44 is mainly the functional frame of the air supply vent 36. Holes can also be made in the adjustment seat 43 for fixing the adjustment seat 43.

[0081] In some embodiments, the adjustment of the air supply cover 44 can also be achieved by means of a mechanism, such as providing a screw mechanism to drive the adjustment of the air supply cover 44 in the front-back direction.

[0082] Linear scan cameras on both sides of the detection channel of the image detection unit 23 scan the seed cotton flow, and the acquired image data is transmitted to the industrial computer in real time. The industrial computer uses a given detection algorithm to detect and locate foreign fibers; and controls the compressed gas jetting unit according to the analysis results to spray the identified foreign fibers into the waste cotton outlet pipe 38 and discharge them from the waste cotton outlet pipe 38.

[0083] Since the detection of foreign fibers is a mature technology and is not an improvement of this utility model, it will not be described in detail here.

[0084] Figure 2In this invention, an upper air supply pipe 32 and a lower air supply pipe 30 are provided on the upper and lower sides of the waste cotton outlet pipe 38. These two air supply pipes can be naturally inlet pipes or forced air supply pipes, such as compressed air pipes. In the embodiments of this invention, the fan used to provide compressed air is preferably a ventilator, blower, compressor, or Roots blower, but does not include positive displacement blowers and compressors, such as piston compressors.

[0085] The cross-sectional area of ​​the upper air supply pipe 32 is smaller than that of the lower air supply pipe 30. Through the combing of the airflow, short foreign fibers can be more easily blown into the waste cotton outlet pipe 38, which has a relatively small cross-sectional area.

[0086] In addition, Figure 2 As can be seen in the illustrated structure, the tube portion corresponding to the flattening portion 33 of the image detection unit 23 is a vertically arranged main tube, with the seed cotton running from top to bottom, hereinafter referred to as the main body. The cross-section of this main body is rectangular, or in other words, it forms a rectangular tube, used to receive the outlet 53.

[0087] The seed cotton outlet tube 39 of the image detection unit 23 is connected to the outlet of the main body. In the figure, the seed cotton outlet tube 39 and the main body are connected by a bent tube, so that the seed cotton outlet tube 39 becomes a horizontal tube and the seed cotton is discharged.

[0088] Figure 2 In the middle, the waste cotton outlet pipe 38 is vertically connected to the front side of the middle part of the main body, and in some embodiments it can also be connected to the rear side of the middle part of the main body.

[0089] The upper air supply pipe 32 and the lower air supply pipe 30 run parallel to the waste cotton outlet pipe 39 to supply air to the main body from the upper and / or lower side of the waste cotton outlet pipe 39. The direction of air supply is roughly opposite to the blowing direction of the short foreign fibers, which can ensure that the seed cotton can flow smoothly downward.

[0090] exist Figure 2 In the illustrated structure, the upper air supply pipe 32, located above the waste cotton outlet pipe 39, is parallel to the main body at one end and vertically connected to the end of the waste cotton outlet pipe 32 connected to the main body. This connection method is beneficial for generating a cutoff effect, preventing single cotton seeds with relatively small surface area and relatively large weight from being blown out.

[0091] Correspondingly, the air supply pipe located below the waste cotton outlet pipe 39, namely the lower air supply pipe 30, is vertically connected to the main body.

[0092] Figure 8The suction fan of the inclined seed cleaner at the third station provides negative pressure adsorption, providing power for the transfer of seed cotton 31 and giving it a certain speed. The seed cotton outlet pipe 39 of the image detection unit 23 is connected to the air inlet of the fan. When the motor drives the impeller to rotate, the impeller does work on the gas, thereby increasing the energy of the gas. As the air inside the impeller is thrown out, a negative pressure is formed in the central area of ​​the impeller. Under the action of the internal and external pressure difference, the air in the air inlet flows into the seed cotton outlet pipe 39 of the image detection unit 23. As the impeller rotates continuously, air flows in and out continuously, thereby achieving continuous delivery of seed cotton 31 with a certain pressure and speed. The seed cotton outlet pipe 39 of the image detection unit 23 is integrated with the seed cotton flow rate regulating device 22 and the lower cotton outlet 19 of the double-layer seed cleaner 2. To ensure the stability of the air pressure inside the lower cotton outlet 19 of the double-layer seed cleaner 2, the falling state of a single seed cotton along the cotton outlet pipe of the double-layer seed cleaner 2 by gravity does not change drastically. Therefore, other air inlets are needed to introduce air to supplement the negative pressure air, ensure the air pressure balance and wind speed stability in the seed cotton conveying pipeline, and provide the best conditions for image detection by the image detection unit 23.

[0093] Based on the above formulas for calculating duct air volume and air velocity:

[0094] Q = v·A × 3600s Air volume Q (m³ / h) Air velocity in duct v (m / s) Duct cross-sectional area A (m²)

[0095] A = L × W (length mm × width mm) Calculation of the cross-sectional area A (㎡) of a rectangular duct

[0096] Q = v·L / 1000×W / 1000×3600s

[0097] The working width of the seed cotton flow rate regulating device is L (the designed working width of the equipment is 3600 mm), the width of the air inlet is W1 (the designed width of the air inlet of the equipment is 260 mm), the width of the seed cotton outlet is W2 (the designed width of the seed cotton outlet of the equipment is 100 mm), and the width of the seed cotton inlet is W3 (the designed width of the seed cotton inlet of the equipment is 310 mm). For example, under this utility model... Figure 8The suction fan of the inclined seed cleaner at the third workstation is a 4-72-10C model centrifugal fan with a power of 37kW, a flow rate of 34863-48797 m³ / h, and a total pressure of 2373-1877 Pa. The seed cotton inlet width of the seed cotton flow rate regulating device 22 is W3, which is consistent with the width of the cotton outlet pipe of the double-layer seed cleaner 2; the seed cotton outlet width of the seed cotton flow rate regulating device 22 is W2, which is consistent with the inlet width of the image detection unit 23. The flow cross-section of the seed cotton flow rate regulating device 22 gradually narrows from the inlet width W3 to the outlet width W2, and is equipped with a supplementary air inlet 36 with a width of W1. The negative pressure adsorption effect in the seed cotton conveying pipe gives the seed cotton a certain movement speed. To ensure a continuous and stable air pressure and air velocity in the seed cotton conveying pipe, air entering from other supplementary air inlets 36 is needed to supplement the required combing air. By adjusting the position of the adjustment hole 47 within the air supply channel, such as the air supply cover 44, the width of the air supply port W1 is adjusted, allowing air to be supplied through the ventilation holes 51, thereby regulating the flow rate of the seed cotton within the pipeline. Once the flow rate of the seed cotton 31 is reasonable and stable, reaching the cotton flow detection velocity of 8-12 m / s required by the design of the image detection unit 23, the fixing screws of the air supply cover 44 are tightened. By adjusting the position in multiple stages, the required cotton flow detection velocity is achieved, enabling the image detection unit 23 to reach its optimal detection state.

[0098] The foregoing example provides the dimensions of the inlet 35, the supplementary air inlet 36, and the outlet 53 in one embodiment. However, in other embodiments, these dimensions are not strictly limited, for example, the inlet 35 should follow the outlet dimensions of the double-layer seed cleaner 2 as much as possible.

[0099] Furthermore, the inlet 35, the air supply inlet 36, and the outlet 53 are functionally related. Preferably, in the front-to-back direction, the length ratio of the outlet 53 to the inlet 35 is 3:10 to 3.5:10; and the length ratio of the air supply inlet 36 to the inlet 53 is 8.1:10 to 8.7:10. As mentioned above, the inlet 35, the air supply inlet 36, and the outlet 53 have the same dimensions in the width direction.

[0100] Accordingly, the housing of the seed cotton flow rate regulating device 22 is formed by a front wall, a rear wall and left and right side walls, thereby defining an upper opening and a lower opening, wherein the lower opening constitutes the outlet 53; the upper opening is separated in the front-back direction, thereby forming the inlet 35 and the air supply 36 arranged in the front-back direction.

[0101] The rear wall is a vertical wall, constructed with vertical plates. The front wall is an arc-shaped plate or an inclined plate forming a given angle with the rear wall, creating a structure that gradually narrows in the front-rear direction. Specifically, as follows... Figure 6As shown, the inner cavity of the seed cotton flow rate regulating device 22 is formed by the cooperation of the front wall and the rear wall, which makes the upper part larger and the lower part smaller. That is, the upper opening of the seed cotton flow rate regulating device 22 is an flared opening, which facilitates the arrangement of the inlet 35 and the air supply 36 in the front and rear directions. The size relationship of the inlet 35, the air supply 36 and the outlet 53 has been described in the previous text and will not be repeated here.

[0102] Based on the configuration of flaring outwards and then gradually narrowing, it can be constructed using an arc-shaped plate on one hand, and an inclined plate combined with an arc transition section on the other. The example of this utility model is easy to understand and will not be elaborated here.

[0103] In addition, as a basic configuration, a mechanical three-fiber machine is installed before the double-layer seed cleaner 2 to clean the long foreign fibers in the seed cotton. The "pre-stage" here does not specifically refer to the direct pre-stage.

[0104] Furthermore, at least one seed cotton drying device is installed before the seed cotton enters the image detection unit 23. Additionally, in Figure 7 and Figure 8 In the two examples, one uses four workstations and the other uses three workstations, with the example using three workstations being the preferred example.

[0105] The following is a description Figure 7 The example shown in the figure:

[0106] At the first station, the dust cage of the seed cotton separator separates the fed seed cotton 31 from the conveying airflow. The seed cotton 31 falls into the closed-loop valve of the seed cotton separator under gravity, 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 initially remove 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.

[0107] The seed cotton is cleaned by a mechanical three-filament machine, and after a drying process, it is sucked into the second station by a downward-suction inclined seed cleaner. After cleaning by the second station's 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 2. The upper and lower cleaning sections of the double-layer seed cleaner 2 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 fallen small cotton bolls. The double-layer seed cleaner can discharge a large amount of infertile seeds, bolls, cotton stalks, leaf debris, dust, and dead cotton petals.

[0108] Seed cotton is cleaned by a double-layer seed cleaner 2, and after two drying stages, it is 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 cotton storage box is used to temporarily store cotton to ensure that there is cotton in the working width direction 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 passes through a spiked roller for loosening and cleaning, and then is thrown onto a row of conveyor rollers. During the forward rotation of the conveyor rollers, the seed cotton is cleaned of impurities. A leveling roller is installed above the conveyor rollers. The height of the leveling roller is adjustable to control the cotton layer thickness. The cotton conveyed by the conveyor rollers is further loosened and cleaned by two spiked rollers, finally forming uniform, loose single seed cotton, which is thrown into the seed cotton channel and enters the image detection channel of the image detection section 23. LED lights are installed on both sides of the image detection 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 cotton seed recycling machine. The cleaned cotton seed is then conveyed to the next process and sucked into the fourth station by a downward-suction inclined cotton seed cleaner.

[0109] At the fourth station, after being cleaned by the downward-suction inclined seed cleaner and the double-layer seed cleaner located at the fourth station, the seed cotton enters the ginning machine. The seed cotton is separated from the fibers by the saw blades and the ribs. The cleaned cotton seeds are continuously squeezed out of the working chamber and discharged between the ginning ribs and the baffle ribs. The fibers hooked by the saw teeth are brushed into the lint channel by brushes installed in the rear chamber at speeds several times higher than the saw blade's linear speed, and then sent to the lint cleaner. After cleaning, they are sent to the cotton dust collection cage for baling and packaging.

[0110] As can be seen from the above description, a four-station configuration will inevitably occupy a relatively large space and require a relatively large number of process equipment.

[0111] The following describesFigure 8 Illustrated three-station configuration:

[0112] contrast Figure 7 The flowchart shown below illustrates the process for detecting and cleaning foreign fibers in seed cotton. Figure 7 The seed cleaning machine, located in the second station, was installed in advance at the designated location. Figure 8 The process flow chart shown illustrates the first station of the cotton foreign fiber image detection and cleaning process, following a mechanical three-fiber machine and a drying stage. This more efficient use of space in the first station leads to a more significant improvement in cleaning effectiveness. Figure 7 In the seed cotton foreign fiber image detection and cleaning process flow diagram, the image seed cotton separator and image mechanical cleaning unit located at the third station are removed. The image detection unit 23 is moved from the third station to the second station, where it is then processed. Figure 8 As shown in the process flow diagram of the foreign fiber image detection and cleaning process for medium-sized seed cotton, the downward suction inclined seed cleaner 12 and the double-layer seed cleaner 2 at the second station serve as dispersing and loosening equipment. Through the seed cotton flow rate adjustment device 22, the seed cotton 31 is uniformly and loosely introduced into the image detection unit 23.

[0113] Will Figure 7 The fourth station in the cotton foreign fiber image detection and cleaning process flow chart shown is moved forward as a whole. Figure 8 In the example shown, at the third station, the seed cotton, after being cleaned by the downward-suction inclined seed cleaner and the double-layer seed cleaner at this station, enters the ginning machine to separate the fibers from the cotton seeds. The cleaned cotton seeds are discharged from the machine, and the fibers hooked by the saw teeth are sent to the lint cleaner, where they are cleaned and then sent to the cotton dust collection cage for packaging.

[0114] Figure 8 The example shown improves the utilization efficiency of the seed cleaner and saves the equipment's energy. Compared to... Figure 7 The seed cotton foreign fiber image detection and cleaning equipment shown eliminates three main parts: the image seed cotton separator, the cotton suction fan, and the image mechanical cleaning unit. The four-station cleaning process is simplified to a three-station cleaning process.

Claims

1. A system suitable for detecting and cleaning foreign fibers, characterized in that, include: The image detection unit is used to detect and remove short, foreign fibers from the seed cotton stream; The seed cotton flow rate regulating device is located in front of the image detection unit and has a housing. The housing has an inlet and an outlet for connecting to the image detection unit. The housing gradually narrows in the front-back direction from the inlet to the outlet, and a makeup air port is provided on the front or rear side of the inlet. A double-layer seed cleaner is connected to the inlet. as well as The mechanical three-fiber machine, located before the double-layer seed cleaner, is used to clean long foreign fibers in seed cotton. Before the seed cotton enters the image detection department, it is equipped with at least one seed cotton drying device.

2. The system according to claim 1, characterized in that, The shell of the seed cotton flow rate regulating device is formed by a front wall, a rear wall and left and right side walls, which define the upper opening and the lower opening, wherein the lower opening constitutes the outlet. The upper opening is separated in the front-to-back direction to form the inlet and the air supply outlet; The air supply vent has an opening adjustment mechanism or structure.

3. The system according to claim 2, characterized in that, The rear wall is a vertical plate, and the front wall is an arc-shaped plate or an inclined plate forming a given angle with the rear wall, so as to form the structure that gradually narrows in the front-rear direction; Accordingly, the air supply inlet is located in front of the air inlet; If it is an inclined plate, the lower end of the inclined plate has an arc transition section.

4. The system according to claim 2 or 3, characterized in that, In the front-to-back direction, the length ratio of the outlet to the inlet is 3:10 to 3.5:10; The length ratio of the air intake to the air inlet is 8.1:10 to 8.7:

10.

5. The system according to claim 2 or 3, characterized in that, The air supply inlet has a perforated shielding plate. The air supply inlet is provided with a valve plate in the front-to-back direction, as well as a structure or mechanism for adjusting the valve plate in the front-to-back direction.

6. The system according to claim 1, characterized in that, The image detection unit includes: The main body has a rectangular cross-section and is used to receive the outlet. The seed cotton outlet tube is connected to the outlet of the main body; Waste cotton outlet pipe is vertically connected to the front or rear side of the middle part of the main body; An air supply pipe is provided parallel to the waste cotton outlet pipe to supply air to the main body from the upper and / or lower side of the waste cotton outlet pipe.

7. The system according to claim 6, characterized in that, The end of the make-up air pipe located above the waste cotton outlet pipe that connects to the main body is parallel to the main body, while the end that connects to the waste cotton outlet pipe and the main body is perpendicular to it. The air supply pipe located below the waste cotton outlet pipe is vertically connected to the main body. The cross-sectional area of ​​the air supply pipe located above the waste cotton outlet pipe is smaller than that of the air supply pipe located below the waste cotton outlet pipe.

8. The system according to claim 1, characterized in that, The image detection unit, seed cotton flow rate adjustment device, double-layer seed cleaner, and the down-suction inclined seed cleaner located in front of the double-layer seed cleaner are arranged from bottom to top at the same workstation in the workshop.

9. The system according to claim 8, characterized in that, The front stage of the downward suction inclined seed cleaner consists of a seed cleaner, a mechanical three-filament machine, and a seed cotton separator arranged from bottom to top at the first work station in the workshop. There is also a seed cotton drying device between the seed cleaner and the mechanical three-filament machine. There is a second seed cotton drying device between the first station and the downward suction inclined seed cleaner.

10. A cotton processing production line, characterized in that, The system includes the one described in any one of claims 1 to 9, which is suitable for detecting and cleaning foreign fibers.

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