Return clearing equipment and method for detecting and clearing foreign fibers of cotton

Abstract

The invention discloses a back-cleaning device and method for detecting and removing cotton foreign fibers, and relates to the field of textile equipment. The back-cleaning device comprises a machine body, a main cotton channel, a back-cleaning channel, a foreign fiber detection module, a spray valve module, a first impurity-containing cotton conveying module, an opening module, a second impurity-containing cotton conveying module, a waste cotton collecting module and a control module, a plurality of groups of foreign fiber detection modules are arranged, and the plurality of groups of foreign fiber detection modules are used for carrying out repeated and cyclic foreign fiber detection on the cotton flow in the main cotton channel and the cleaning channel. Single-face detection and double-face detection of the main cotton flow can be achieved, foreign fibers and impurity-containing cotton in the to-be-detected cotton flow can be effectively removed, the impurity-containing cotton is subjected to re-cleaning and re-inspection, multi-channel cyclic re-inspection and foreign fiber removal of the impurity-containing cotton and recycling of the impurity-containing cotton are achieved, waste of the cotton in the foreign fiber removal process is reduced, and the cotton quality is improved. And meanwhile, the foreign fiber detection and removal rate is improved, and the economic benefit of a cotton spinning mill is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of textile equipment, and in particular to a cleaning device and method for detecting and removing foreign fibers in cotton. Background Art

[0002] With the upgrading of the industry and the development of the market, consumers have higher and higher requirements for the quality of textile products. However, foreign fibers mixed in the production and transportation of cotton raw materials will be entangled into bundles during the process of combing and spinning, or broken into small defects and mixed into the yarn, which will cause the yarn to break, affecting the quality of yarn, cloth and printing and dyeing, causing economic losses and waste.

[0003] In order to improve the quality of textiles, textile mills generally introduce foreign fiber machines in pre-spinning production to remove foreign fibers in cotton to improve product quality. However, in actual application, foreign fiber machines will also cause new problems in removing foreign fibers. Foreign fiber machines on the market generally detect foreign fibers in cotton through image recognition (relying on light sources, detection cameras and algorithms, etc.). The detection method of a single foreign fiber machine is relatively simple, and the removal effect is limited. In order to better remove foreign fibers, pre-spinning production generally chooses to increase the sensitivity parameters of foreign fiber machine detection, or adopts the method of connecting multiple foreign fiber machines in series to increase the foreign fiber knockout rate.

[0004] Due to the limitation of the working principle of the foreign fiber machine itself, the foreign fiber machine will bring out a small amount of cotton while clearing out foreign fibers. The cotton with high foreign fiber content is called noil. According to inspection and statistics, the noil volume of the foreign fiber machine is about 1% to 5% of the total raw cotton production on the production line, and the foreign fiber content in the noil is about 0.5%, that is, most of the noil is still cotton. If the foreign fiber knockout rate of raw cotton is to be improved, the foreign fiber machine will inevitably produce a larger amount of noil while removing foreign fibers, resulting in greater waste and economic losses.

[0005] At present, cotton mills generally deal with these impure cotton by directly packing them and selling them at a reduced price, or reusing them after manual selection, or using sorting machines instead of manual selection; this will obviously increase the working hours, costs and material waste in the production process. In addition, connecting multiple foreign fiber machines in series also requires a larger workshop space and consumes more electricity. The longer and more curved cotton flow channel formed by the foreign fiber machines in series will cause the cotton to form more cotton knots (according to statistical experience, cotton will have about 15% more cotton knots after going through one more 180° bend), affecting the quality of the cloth. Summary of the invention

[0006] In order to solve the problems raised in the background technology, the present application provides a return cleaning device and method for detecting and removing foreign fibers in cotton, so as to improve the detection rate of foreign fibers and reduce the incidental losses of cotton.

[0007] In the first aspect, the present application provides a cleaning device for detecting and removing foreign fibers in cotton, which adopts the following technical solution: A return cleaning device for detecting and removing foreign fibers in cotton, comprising a machine body and a main cotton channel, a return cleaning channel, a foreign fiber detection module, a spray valve module, a trash cotton transmission module 1, an opening module, a trash cotton transmission module 2, a waste cotton collection module and a control module arranged on the machine body, wherein the main cotton channel and the return cleaning channel are arranged in parallel, and the entrance of the return cleaning channel is connected with the exit end of the opening module; the foreign fiber detection modules are arranged in multiple groups on both sides of the main cotton channel and the return cleaning channel, and the multiple groups of foreign fiber detection modules are used to perform multiple foreign fiber detections on the cotton flow in the main cotton channel and the return cleaning channel; the spray valve module is used to knock out the trash cotton detected in the main cotton channel and the trash cotton detected in the return cleaning channel; the trash cotton transmission module 1 is used to transport the trash cotton knocked out at the main cotton channel to the opening module; the trash cotton transmission module 2 is used to transport the trash cotton knocked out at the return cleaning channel to the waste cotton collection module.

[0008] Optionally, the foreign fiber detection module includes a light source module and a camera module, the light source module is used to provide lighting for the main cotton channel and the return cleaning channel, and the camera module is used to collect image data in the main cotton channel and the return cleaning channel.

[0009] Optionally, the spray valve module includes a main cotton flow spray valve group and a return cleaning spray valve group, the main cotton flow spray valve group includes a plurality of main cotton flow spray valve units arranged in sequence along a main cotton channel, and the return cleaning spray valve group includes a plurality of return cleaning spray valve units arranged in sequence along a return cleaning channel.

[0010] Optionally, a cotton storage box is provided between the trash cotton transmission module 1 and the opening module, and a sensor component for detecting the amount of dropped cotton in the cotton storage box is provided in the cotton storage box.

[0011] Optionally, a cotton storage box is provided between the impure cotton transmission module 1 and the opening module, and a sensor component is provided in the cotton storage box.

[0012] Optionally, according to the amount of cotton dropped in the cotton storage box, a first cotton amount threshold and a second cotton amount threshold are preset on the cotton storage box, and the first cotton amount threshold is smaller than the second cotton amount threshold; The sensing component is configured to: when the cotton drop amount in the cotton storage box reaches a first cotton amount threshold or a second cotton amount threshold, the sensing component sends a signal to the control module; The control module controls the working mode of the spray valve module and the working parameters of the spray valve module in the working mode according to the amount of cotton dropped in the cotton storage box.

[0013] Optionally, it also includes a return cleaning module, which includes a return cleaning cotton collecting fan and a cotton separating component. The inlet end of the return cleaning cotton collecting fan is connected to the outlet of the return cleaning channel, and the cotton separating component is used to connect the outlet end of the return cleaning cotton collecting fan to the inlet end of the opening module or the outlet end of the main cotton channel.

[0014] Optionally, it also includes a recovered cotton collection module, which includes a recovered cotton collection fan and a recovered cotton collection tray, the inlet end of the recovered cotton collection fan is connected to the outlet of the return channel, the outlet end of the recovered cotton collection fan is connected to the inlet of the recovered cotton collection tray, and the outlet of the recovered cotton collection tray is open.

[0015] In a second aspect, the present application provides a method for detecting and removing foreign fibers in cotton, which is performed using the above-mentioned return cleaning device for detecting and removing foreign fibers in cotton, and adopts the following technical solution: A method for detecting and removing foreign fibers in cotton, comprising the following steps: The cotton flow to be inspected in the main cotton channel is divided into a main cotton flow A without foreign fibers and a mixed cotton flow A with foreign fibers by using multiple groups of foreign fiber detection modules; The impure cotton A is knocked out by the spray valve module and the impure cotton transmission module 1 and transmitted to the opening module for opening; The loosened impure cotton A is sent to a return cleaning channel, and the cotton flow to be inspected in the return cleaning channel is divided into a main cotton flow B without foreign fibers and impure cotton B containing foreign fibers by multiple groups of foreign fiber detection modules; The impure cotton B is transmitted to the waste cotton collection module through the spray valve module and the impure cotton transmission module 2; The number of times the spray valve module strikes at the main cotton channel D1 and the number of times the spray valve module strikes at the return cleaning channel D2 are obtained, and based on the comparison between D1 and D2, the main cotton flow B is sent to the opening module again for opening and the main cotton flow B after opening is sent to the return cleaning channel again, or the main cotton flow B is sent to the downstream production line, or the main cotton flow B is recovered.

[0016] Optionally, based on the comparison between D1 and D2, the working mode of the spray valve module and the working parameters of the spray valve module in the working mode are adjusted.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. Multiple groups of foreign fiber detection modules can sequentially perform single-sided and double-sided detection on the cotton flow to be inspected in the main cotton channel and the return cleaning channel, effectively improving the detection rate of foreign fibers; at the same time, the cotton flow to be inspected can be in a straight-line flow state during the single-sided and double-sided detection process, effectively reducing the cotton knots caused by the bending of the flow channel of the cotton flow to be inspected, and effectively ensuring the conveying efficiency of the main cotton flow; 2. In the actual production process, the above-mentioned equipment and method for detecting and removing foreign fibers in cotton can realize single-sided and double-sided detection of the main cotton flow in the production line, effectively clear out foreign fibers in the cotton flow to be inspected, and knock out the impure cotton in the cotton flow to be inspected; and re-clear and re-inspect the impure cotton, realize multi-channel single-sided and double-sided detection and cyclic re-inspection of the impure cotton and foreign fiber removal, effectively realize the recycling of impure cotton, reduce the waste of cotton in the process of foreign fiber removal, do not need to consume additional working hours, which is conducive to improving the detection and removal rate of foreign fibers at the same time, and effectively guarantee the economic benefits of the cotton spinning mill; 3. Through the cooperation of the sensor components, spray valve module, opening module and control module, the control module in this application can automatically adjust the working mode of each module and the parameter adjustment of each module under the corresponding working mode according to the actual production situation of the production line, and the overall processing capacity and adaptability of the equipment are stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a three-dimensional schematic diagram of the overall structure of the first embodiment of the present application when viewed from the front to the back (in the drawings of the present application, the Figure 1 The arrow below is the forward direction. Figure 1 The direction opposite to the arrow direction is the rearward direction); Figure 2 is a plan view schematically showing the overall structure of the first embodiment of the present application from a rear-view perspective; Figure 3 is along Figure 2 Schematic diagram of the cross-sectional structure along the AA line; Figure 4 It is a three-dimensional schematic diagram of the overall structure of the first embodiment of the present application when viewed from the back to the front; Figure 5 This is a partial structural diagram of the first embodiment of the present application for demonstrating the spray valve module; Figure 6 This is a schematic diagram of the overall structure of the first embodiment of the present application for showing the first conveying module containing impurities; Figure 7 This is a schematic diagram of the overall structure of the first embodiment of the present application for showing the second waste cotton transmission module, the waste cotton collection module and the return cleaning module; Figure 8 is a three-dimensional schematic diagram of the overall structure of the second embodiment of the present application when viewed from front to back; Fig. 9 It is a three-dimensional schematic diagram of the overall structure of the second embodiment of the present application when viewed from the back to the front; Fig.10 It is a flow chart of a method for detecting and removing foreign fibers in cotton provided in an embodiment of the present application.

[0020] Reference numerals: 1, machine body; 11, main cotton channel; 12, return clean channel; 13, cotton storage box; 2, foreign fiber detection module; 21, light source module; 22, camera module; 3, spray valve module; 31, main cotton flow spray valve group; 311, main cotton flow spray valve unit group A; 312, main cotton flow spray valve unit group B; 32, return clean spray valve group; 321, return clean spray valve unit group A; 322, return clean spray valve unit group B; 4, impure cotton transmission module 1; 41, impure cotton collection fan; 42, main impurity removal pipe 1; 43. Main impurity removal pipe II; 44. Impurity cotton conveying pipe I; 5. Loosening module; 6. Impurity cotton conveying module II; 61. Auxiliary impurity removal pipe I; 62. Auxiliary impurity removal pipe II; 63. Impurity cotton conveying pipe II; 7. Waste cotton collection module; 71. Waste cotton collection fan; 72. Waste cotton collection tray; 8. Return cleaning module; 81. Return cleaning cotton collection fan; 82. Cotton sorting component; 821. Cotton sorting pipe I; 822. Cotton sorting pipe II; 9. Recycled cotton collection module; 91. Recycled cotton collection fan; 92. Recycled cotton collection tray. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0026] The following is combined with Figure 1-10 This application is described in further detail.

[0027] First, the following contents are introduced: The foreign fibers mentioned in this application refer to non-cotton fibers and colored fibers that are mixed into the cotton raw materials during the production and transportation of cotton raw materials and have a serious impact on the quality of cotton and its products. Common ones include plastic film, plastic rope, hemp, dyed thread (rope, cloth), silk, chemical fiber, hair, etc.

[0028] The trash cotton mentioned in this application refers to cotton with a high content of foreign fibers, which is generally the noil discharged from a foreign fiber machine, or purchased high-trash recycled cotton, waste cotton in the production process, etc.

[0029] In a first aspect, an embodiment of the present application discloses a cleaning device for detecting and removing foreign fibers in cotton. Embodiment 1:

[0030] Reference Figure 1 , Figure 2 and Figure 3 A return cleaning device for detecting and removing foreign fibers in cotton comprises a body 1 and a main cotton channel 11, a return cleaning channel 12, a foreign fiber detection module 2, a spray valve module 3, a trash cotton transmission module 1 4, an opening module 5, a trash cotton transmission module 2 6, a waste cotton collection module 7, a return cleaning module 8 and a control module; the foreign fiber detection module 2, the spray valve module 3, the trash cotton transmission module 1 4, the opening module 5, the trash cotton transmission module 2 6 and the waste cotton collection module 7 are all electrically connected to the control module and controlled by the control module.

[0031] Reference Figure 1 and Figure 3, the main cotton channel 11 and the return cleaning channel 12 both penetrate the machine body 1 from bottom to top, the width direction of the main cotton channel 11 is consistent with the width direction of the return cleaning channel 12, the main cotton channel 11 and the return cleaning channel 12 are arranged in parallel along the width direction of the main cotton channel 11, and the lower end of the main cotton channel 11 is its inlet end and the upper end is its outlet end, and the lower end of the return cleaning channel 12 is its inlet end and the upper end is its outlet end. The inlet end and the outlet end of the main cotton channel 11 are used to be connected to the production line of the cotton spinning mill, and the cotton flow to be inspected enters the return cleaning device through the inlet end of the main cotton channel 11. According to the different scales of the production lines of the cotton spinning mill, the width of the main cotton channel 11 is commonly 1.2 meters narrow and 1.6 meters wide. In this application, the width of the main cotton channel 11 can be customized or adjusted according to the existing site and production line conditions of the cotton spinning mill.

[0032] Reference Figure 3 The foreign fiber detection module 2 includes a light source module 21 and a camera module 22. The light source module 21 is used to provide illumination for the main cotton channel 11 and the return cleaning channel 12, and the camera module 22 is used to collect image data in the main cotton channel 11 and the return cleaning channel 12.

[0033] Specifically, in the embodiment of the present application, the light source module 21 includes an illumination light source, a lamp holder and a heat dissipation assembly, and the illumination light source and the heat dissipation assembly are installed on the lamp holder, and the lamp holder and the illumination light source transversely penetrate the main cotton channel 11 and the return cleaning channel 12 along the width direction of the main cotton channel 11, so that the light source module 21 provides the same lighting conditions for the main cotton channel 11 and the return cleaning channel 12.

[0034] Furthermore, the light source modules 21 in each group of foreign fiber detection modules 2 are arranged in multiple groups, and the illumination light source in the light source module 21 can be polarized light, white light, purple light, infrared light or multi-spectrum light source. In the actual production process, the light source module 21 can be replaced according to the actual needs of the cotton spinning mill, or the illumination light source in the light source module 21 can be replaced and reorganized, so as to provide a composite light source for the cotton flow to be inspected and improve the detection rate of foreign fibers.

[0035] The camera module 22 is electrically connected to the image recognition processing module. The camera module 22 and the image recognition processing module are both electrically connected to the control module and controlled by the control module.

[0036] In the preferred embodiment of the present application, refer to Figure 3, the foreign fiber detection module 2 is set to three groups, and the three groups of foreign fiber detection modules 2 can be divided into a single-sided detection group and a double-sided detection group. The single-sided detection group is composed of a group of foreign fiber detection modules 2, and the single-sided detection group is installed on one side of the main cotton channel 11 and the return cleaning channel 12. The single-sided detection group is used to realize single-sided detection of the cotton flow in the main cotton channel 11 and the return cleaning channel 12; the double-sided detection group is composed of two groups of foreign fiber detection modules 2, and the two groups of foreign fiber detection modules 2 in the double-sided detection group can be arranged in sequence on both sides of the main cotton channel 11 and the return cleaning channel 12 along the direction of the cotton flow conveyed by the main cotton channel 11, or can be relatively arranged on both sides of the main cotton channel 11 and the return cleaning channel 12. The double-sided detection group is used to realize double-sided detection of the cotton flow in the main cotton channel 11 and the return cleaning channel 12; the single-sided detection group is located at the front end of the double-sided detection group, and the cotton flow to be inspected passes through the single-sided detection group and the double-sided detection group in sequence, so as to effectively improve the foreign fiber detection rate.

[0037] In other feasible schemes of the embodiments of the present application, the foreign fiber detection modules 2 can also be set as one group, two groups or more than three groups. When the foreign fiber detection modules 2 are set as one group, they can only realize single-sided detection of the cotton flow to be inspected, and their ability to detect foreign fibers is lower than that of three groups of foreign fiber detection modules 2; when the foreign fiber detection modules 2 are set as two groups, they can only realize single, double-sided detection of the cotton flow to be inspected, or two, single-sided detection of the cotton flow to be inspected, and their ability to detect foreign fibers is lower than that of three groups of foreign fiber detection modules 2; when the foreign fiber detection modules 2 are set as more than three groups, their ability to detect foreign fibers is higher than that of three groups of foreign fiber detection modules 2, but they occupy more equipment space and have higher costs, which is not conducive to the widespread promotion of the equipment.

[0038] Further, see Figure 1 and Figure 3 The main cotton channel 11 and the return cleaning channel 12 between the single-sided detection group and the double-sided detection group are both set as straight sections. There are no bends in the main cotton channel 11 and the return cleaning channel 12, which is conducive to the straight flow of the cotton flow to be inspected, reducing the length of the flow channel, and reducing the possibility of bending or turning points in the flow channel, thereby effectively reducing the cotton knots caused by the bending of the flow channel and effectively ensuring the conveying efficiency of the cotton flow in the main cotton flow channel.

[0039] Reference Figure 4 and Figure 5 The spray valve module 3 includes a main cotton flow spray valve group 31 installed on the outside of the main cotton channel 11 and a return clean water spray valve group 32 installed on the outside of the return clean water channel 12 .

[0040] The main cotton flow spray valve group 31 and the return cleaning spray valve group 32 are arranged in parallel along the width direction of the main cotton channel 11, and in the preferred scheme of the embodiment of the present application, the main cotton flow spray valve group 31 and the return cleaning spray valve group 32 are both arranged on the lower side of the main cotton channel 11 to overcome the influence of the dead weight of the cotton flow, knock out foreign fibers in the cotton flow from bottom to top, and reduce the amount of cotton brought out when knocking out foreign fibers.

[0041] Further, see Figure 5 The main cotton flow spray valve group 31 includes a plurality of main cotton flow spray valve units sequentially arranged along the cotton flow conveying direction of the main cotton channel 11, and the return cleaning spray valve group 32 includes a plurality of return cleaning spray valve units sequentially arranged along the cotton flow conveying direction of the return cleaning channel 12.

[0042] In the preferred scheme of the embodiment of the present application, the main cotton flow spray valve unit and the return cleaning spray valve unit are both arranged in two groups, the two groups of main cotton flow spray valve units are named in sequence as main cotton flow spray valve unit group A311 and main cotton flow spray valve unit group B312, and the two groups of return cleaning spray valve units are named in sequence as return cleaning spray valve unit group A321 and return cleaning spray valve unit group B322.

[0043] The main cotton flow spray valve unit group A311 and the return cleaning spray valve unit group A321 are arranged in parallel between the single-sided detection group and the double-sided detection group, and are arranged adjacent to the single-sided detection group to knock out foreign fibers detected by the single-sided detection group in the main cotton channel 11 or the return cleaning channel 12.

[0044] The main cotton flow spray valve unit group B312 and the return cleaning spray valve unit group B322 are arranged in parallel at the rear end of the double-sided detection group and adjacent to the double-sided detection group to knock out foreign fibers detected by the double-sided detection group in the main cotton channel 11 or the return cleaning channel 12.

[0045] At present, the impurity removal rate of the single-sided foreign fiber detection machine on the market is about 80%, and the impurity removal rate of the double-sided foreign fiber detection machine is about 90%.

[0046] The impurity removal rate of the return cleaning device in the embodiment of the present application satisfies the following formula: The main cotton impurity removal rate P=1-(1-P1)*(1-P2), wherein P1 is the impurity removal rate of foreign fibers detected by the single-sided detection group and knocked out by the main cotton flow spray valve unit group A in this application, and P2 is the impurity removal rate of foreign fibers detected by the double-sided detection group and knocked out by the main cotton flow spray valve unit group B in this application.

[0047] When P1=80%, P2=90%, P=98%, that is, the cleaning device in the embodiment of the present application can significantly improve the foreign fiber removal rate.

[0048] Reference Figure 6 , and combined with Figure 1 The impurity cotton transmission module 1 4 includes an impurity cotton collecting fan 41 , a main impurity removal pipe 1 42 , a main impurity removal pipe 2 43 and an impurity cotton transmission pipe 1 44 .

[0049] The main impurity removal pipe 1 42 and the main impurity removal pipe 2 43 are fixedly installed in sequence above the main cotton channel 11 along the direction of the cotton flow conveying in the main cotton channel 11, and the impurity cotton collecting fan 41 is installed on the machine body 1, and the inlet end of the main impurity removal pipe 1 42 and the inlet end of the main impurity removal pipe 2 43 are both connected to the main cotton channel 11, and the inlet end of the main impurity removal pipe 1 42 and the main cotton flow spray valve unit group A311 are arranged oppositely, and the inlet end of the main impurity removal pipe 2 43 and the main cotton flow spray valve unit group B312 are arranged oppositely. Foreign fibers detected by the single-sided detection group in the main cotton channel 11 can be knocked out through the main cotton flow spray valve unit group A311 and enter the main impurity removal pipe 1 42; foreign fibers detected by the double-sided detection group in the main cotton channel 11 can be knocked out through the main cotton flow spray valve unit group B312 and enter the main impurity removal pipe 2 43.

[0050] The impurity cotton conveying pipe 1 44 is preferably a PVC steel wire spiral hose. There are multiple impurity cotton conveying pipes 1 44, and the outlet end of the main impurity removal pipe 1 42 and the outlet end of the main impurity removal pipe 2 43 are connected to the inlet end of the impurity cotton collecting fan 41 through the impurity cotton conveying pipes 1 and pipe fittings. It should be noted that the "pipe fittings" mentioned in this article are joints used to connect multiple pipes, and common ones include three-way joints, multi-way joints, etc.

[0051] Reference Figure 6 , and look back Figure 4 In the embodiment of the present application, the opening module 5 is a cotton opener, and a cotton storage box 13 is arranged between the impure cotton transmission module 14 and the cotton opener, and both the cotton opener and the cotton storage box 13 are provided with an inlet and an outlet. The inlet of the cotton storage box 13 is connected to the outlet end of the impure cotton collecting fan 41, and the outlet of the cotton storage box 13 is connected to the inlet of the cotton opener. The foreign fibers detected by the single-sided detection group and the foreign fibers detected by the double-sided detection group in the main cotton channel 11 can be converged through the main impurity removal pipe 1 42, the main impurity removal pipe 2 43, the impure cotton conveying pipe 1 44 and the impure cotton collecting fan 41, and then transported to the cotton storage box 13 by the impure cotton collecting fan 41, and then sent to the opening beater by the cotton conveying roller of the cotton opener for re-opening.

[0052] The inlet end of the return channel 12 is connected to the outlet end of the cotton opener.

[0053] Reference Figure 7 , and combined with Figure 1 The second impurity cotton transmission module 6 includes a first auxiliary impurity removal pipe 61, a second auxiliary impurity removal pipe 62 and a second impurity cotton transmission pipe 63. The waste cotton collection module 7 includes a waste cotton collection fan 71 and a waste cotton collection tray 72.

[0054] Auxiliary impurity removal pipe 1 61 and auxiliary impurity removal pipe 2 62 are fixedly installed in sequence above the return cleaning channel 12 along the direction of the cotton flow conveyed by the return cleaning channel 12, and the inlet end of auxiliary impurity removal pipe 1 61 and the inlet end of auxiliary impurity removal pipe 2 62 are both connected to the return cleaning channel 12, the inlet end of auxiliary impurity removal pipe 1 61 is arranged opposite to the return cleaning spray valve unit group A321, and the inlet end of the auxiliary impurity removal pipe is arranged opposite to the return cleaning spray valve unit group B322.

[0055] The material of the impurity-containing cotton conveying pipe 2 63 is consistent with that of the impurity-containing cotton conveying pipe 1 44, and there are also multiple impurity-containing cotton conveying pipes 2 63. The outlet end of the auxiliary impurity-removing pipe 1 61 and the outlet end of the auxiliary impurity-removing pipe 2 62 are connected to the inlet end of the waste cotton collecting fan 71 through multiple impurity-containing cotton conveying pipes 2 63 and pipe fittings. The waste cotton collecting tray 72 is disc-shaped, and the waste cotton collecting tray 72 is installed on the machine body 1. The inlet of the waste cotton collecting tray 72 is connected to the outlet end of the waste cotton collecting fan 71, and the outlet of the waste cotton collecting tray 72 faces downward. The impurity-containing cotton in the auxiliary impurity-removing pipe 1 61 and the auxiliary impurity-removing pipe 2 62 can be collected to the waste cotton collecting tray 72 through the impurity-containing cotton conveying pipe 2 63 and the waste cotton collecting fan 71, and discharged through the outlet of the waste cotton collecting tray 72. It should be noted that the waste cotton collection tray 72 can also be set as a square tray or a special-shaped tray; in the actual production process, the outlet of the waste cotton collection tray 72 can be detachably connected to the collection bag to collect waste cotton and prevent cotton wool from flying around.

[0056] After the cotton flow to be inspected enters the main cotton channel 11, it can be inspected on one side and two sides in sequence through the foreign fiber detection modules 2 on both sides of the main cotton channel 11. The impure cotton detected by the single side detection and the impure cotton detected by the double side detection are merged through the impure cotton transmission module 14 and sequentially transmitted to the cotton storage box 13 and the cotton opener for re-opening. The impure cotton after re-opening enters the return cleaning channel 12 from the entrance of the return cleaning channel 12, and is inspected on one side and two sides in sequence again through the foreign fiber detection modules 2 on both sides of the return cleaning channel 12. The foreign fibers detected on one side in the return cleaning channel 12 are knocked out through the return cleaning spray valve unit group A321 and enter the auxiliary impurity removal pipe 1 61, and the foreign fibers detected on both sides in the return cleaning channel 12 are knocked out through the return cleaning spray valve unit group B322 and enter the auxiliary impurity removal pipe 2 62.

[0057] In the preferred embodiment of the present application, the impure cotton ejected by the return cleaning spray valve unit group A321 and the return cleaning spray valve unit group B322 is collected to the waste cotton collection tray 72 through the auxiliary impurity removal pipe 1 61, the auxiliary impurity removal pipe 2 62, the impure cotton conveying pipe 2 63 and the waste cotton collection fan 71, and is discharged from the waste cotton collection tray 72, and this part of the high impurity cotton no longer enters the main cotton channel 11 or the return cleaning pipe. It should be noted that in other feasible solutions of the present application, the outlet of the waste cotton collection tray 72 can also be connected to the entrance of the return cleaning channel 12 or the entrance of the main cotton channel 11 through a pipeline, so as to realize the re-detection and removal of foreign fibers in this part of the high impurity cotton.

[0058] However, after many striking experiments and tests and verifications, the impure cotton knocked out by the return-cleaning spray valve unit group A321 and the impure cotton knocked out by the return-cleaning spray valve unit group B322 are high-impurity cotton with a foreign fiber content higher than 60%, wherein the foreign fiber content is even higher than the cotton content, and the amount is extremely small (the amount of foreign fiber machine dropped cotton is about 1% to 5%, and the amount of high-impurity waste cotton is about 1%*1% to 5%*5%, i.e. less than 0.25%). The economic benefit of foreign fiber detection or recycling again is low. Therefore, in the preferred scheme of the embodiment of the present application, the impure cotton knocked out by the return-cleaning spray valve unit group A321 and the return-cleaning spray valve unit group B322 no longer enters the main cotton channel 11 or the return-cleaning channel 12 for reuse.

[0059] Further, see Figure 7 , and combined with Figure 1 The return cleaning module 8 includes a return cleaning cotton collecting fan 81 and a cotton separating component 82.

[0060] The cotton dividing assembly 82 includes a cotton dividing tube 1 821, a cotton dividing tube 2 822 and a cotton splitter. The cotton dividing tube 1 821 and the cotton dividing tube 2 822 are interconnected, and the inlet of the cotton dividing tube 1 821 and the inlet of the cotton dividing tube 2 822 are gathered at one place. The outlet 43 is connected to the inlet of the cotton storage box 13, and the outlet of the cotton dividing tube 2 822 is gathered at the outlet end of the main cotton channel 11; the cotton splitter is installed at the confluence of the inlets of the cotton dividing tube 1 821 and the cotton dividing tube 2 822, and the cotton splitter is used to allow the cotton flow at the confluence of the cotton dividing tube 1 821 and the cotton dividing tube 2 822 to select one to enter the cotton dividing tube 1 821 or the cotton dividing tube 2 822.

[0061] Reference Figure 7 The return clean cotton collecting fan 81 is installed on the machine body 1, the inlet end of the return clean cotton collecting fan 81 is connected with the outlet of the return clean channel 12, and the outlet end of the recovery cotton collecting fan 91 is connected to the front end of the confluence of the inlets of the cotton dividing tube 1 821 and the cotton dividing tube 2 822. The operation of the recovery cotton collecting fan 91 and the cotton splitter are controlled by the control module.

[0062] The foreign fiber detection modules 2 in the return cleaning channel 12 and on both sides of the return cleaning channel 12 perform single-sided detection and double-sided detection in sequence again and knock out the cotton flow after the foreign fibers are again ejected through the return cleaning spray valve unit group A321 and the return cleaning spray valve unit group B322. The cotton flow can be discharged through the outlet of the return cleaning channel 12 and collected by the return cleaning cotton collection fan 81.

[0063] For the cotton flow discharged from the outlet of the return cleaning channel 12, at the beginning of operation, the control module is used to obtain the number of strikes of the main cotton flow spray valve unit group A311, the main cotton flow spray valve unit group B312, the return cleaning spray valve unit group A321 and the return cleaning spray valve unit group B322, and the number of strikes D1 of the main cotton flow spray valve group 31 at the main cotton channel 11 and the number of strikes D2 of the return cleaning spray valve group 32 at the return cleaning channel 12 are obtained. The cotton spinning mill experimenter will check and judge whether the cotton after return cleaning can be reused, and then set the judgment thresholds E of D1 and D2 according to the quality requirements of yarn production, and compare D1 and D2. According to the comparison results of D1 and D2, the cotton flow at the outlet of the return channel 12 is transmitted to the opening module 5 again through the cotton dividing tube 821 for opening, so that this part of the cotton flow enters the return channel 12 again, and multiple and cyclic detection of the cotton flow at the outlet of the return channel 12 is realized until this part of the cotton flow reaches the quality standard for reuse; or the cotton flow at the outlet of the return channel 12 is converged to the outlet of the main cotton channel 11 through the cotton dividing tube 822, so that this part of the cotton flow enters the downstream production line.

[0064] Specifically, the comparison between D1 and D2 satisfies the following conditions: 1. When D2 < D1 * E, it indicates that the processing capacity of the return cleaning spray valve group 32 needs to be increased, and the cotton flow at the outlet of the return cleaning channel 12 has not been processed cleanly and cannot be directly merged into the main cotton flow. The control module controls the cotton splitter to open the cotton splitting pipe 1 821 and close the cotton splitting pipe 2 822 synchronously, so that the cotton flow at the outlet of the return cleaning channel 12 is transmitted to the opening module 5 again through the return cleaning cotton collection fan 81 and the cotton splitting pipe 1 821 for opening, and the cotton flow after opening again enters the return cleaning channel 12, so as to realize multiple and cyclic detection of the cotton flow at the outlet of the return cleaning channel 12. At the same time, the control module controls the spray valve module 3 and the opening module 5 to make the following adjustments: a. Improve the parameters and sensitivity of the foreign fiber detection module 2 on both sides of the return cleaning channel 12; b. Improve the parameters of the return cleaning spray valve group 32 (including the number of valves opened at a single time and the valve opening time); C. Reduce the motor speed of the cotton opener and increase the degree of opening to improve the foreign fiber detection rate of the cotton flow in the return cleaning channel 12.

[0065] 2. When D2 ≥ D1 * E, it indicates that the sensitivity and parameters of the multiple groups of foreign fiber detection modules 2 on both sides of the return channel 12 are high, and the cotton flow at the outlet of the return channel 12 has been fully cleaned and can be directly merged into the main cotton flow. The control module controls the cotton splitter to close the cotton dividing tube 1 821 and the cotton dividing tube 2 822 accordingly, so that the cotton flow at the outlet of the return channel 12 is collected to the outlet of the main cotton channel 11 through the return cotton collection fan 81 and the cotton dividing tube 2 822 and enters the downstream production line. At the same time, the control module controls the spray valve module 3 and the opening module 5 to make the following adjustments: a. Improve the parameters and sensitivity of the foreign fiber detection module 2 on both sides of the main cotton channel 11; b. Improve the parameters of the main cotton flow spray valve group 31 (including the number of single valve openings and the valve opening time); C. Increase the motor speed of the cotton opener, thereby effectively improving the overall processing capacity of the equipment and improving the efficiency of cotton detection and removal.

[0066] Furthermore, when D2 increases sharply and D1 does not change much, it indicates that there may be cotton hanging in the return channel 12 that needs to be dealt with, and the control module starts the spray valve protection accordingly.

[0067] When D1 and D2 increase or decrease synchronously, it reflects that the impurity content of the cotton raw material changes. The operator can adjust the spray valve module 3 and the opening module 5 through the control module according to the actual quality requirements of the cotton products.

[0068] According to actual tests and calculations, the above E value is preferably 80%. It should be noted that the above E value can be adaptively adjusted according to the types of raw cotton in the cotton spinning mill and the actual quality requirements of textile products; the types of raw cotton mentioned here mainly refer to Xinjiang cotton, Turkish cotton, American cotton, Australian cotton, Indian cotton, etc. At the same time, during the production process, the operator can conduct routine spot checks on the returned cotton according to the equipment operation time or yarn quality requirements, and adjust the E value according to the spot check results.

[0069] Further, look back Figure 5 In the embodiment of the present application, the cotton storage box 13 is vertically installed above the cotton opening machine, transparent observation windows are arranged on both sides of the cotton storage box 13, and a sensor component for detecting the amount of cotton dropped in the cotton storage box 13 is arranged in the cotton storage box 13.

[0070] In the embodiment of the present application, the sensing component is preferably a photoelectric sensor. Combined with the observation window, according to the volume of the cotton storage box 13 and the amount of cotton dropped, the cotton storage box 13 is provided with a first cotton amount threshold and a second cotton amount threshold at different height positions, and the first cotton amount threshold is less than the second cotton amount threshold; two groups of photoelectric sensors are provided, and the two groups of photoelectric sensors are respectively installed at the height position corresponding to the first cotton amount threshold on the cotton storage box 13 and the height position corresponding to the second cotton amount threshold on the cotton storage box 13.

[0071] When the cotton dropping amount in the cotton storage box 13 reaches the first cotton amount threshold or the second cotton amount threshold, the two groups of photoelectric sensors send signals to the control module respectively, and the control module controls and adjusts the working mode of the spray valve module 3 and the working parameters of the spray valve module 3 in the corresponding working mode according to the cotton dropping amount in the cotton storage box 13. The control and adjustment method is as follows: In the actual production process, the photoelectric sensor in the cotton storage box 13 determines: 1. When the cotton drop amount in the cotton storage box 13 is lower than the first cotton amount threshold, it indicates that the processing capacity of the cotton opener and the processing capacity of the return cleaning spray valve group 32 are sufficient. The operator can automatically increase the parameters of the single-sided detection group on both sides of the main cotton channel 11 and the parameters of the main cotton flow spray valve group 31 through the control module, or manually increase the parameters of the single-sided detection group on both sides of the main cotton channel 11 and the parameters of the main cotton flow spray valve group 31 to improve the foreign fiber detection rate and foreign fiber knockout rate of the cotton flow in the main cotton channel 11.

[0072] 2. When the amount of cotton dropping in the cotton storage box 13 is higher than the second cotton amount threshold, it indicates that the foreign fiber detection module 2 has removed too much impurities. Combined with the number of strikes of the main cotton flow spray valve group 31 and the number of strikes of the return cleaning spray valve group 32, the reason for the surge in the amount of cotton dropping in the cotton storage box 13 is further determined: (1) When the number of strikes of the main cotton flow spray valve group 31 increases sharply, while the number of strikes of the return cleaning spray valve group 32 does not change much, it indicates that there is cotton hanging in the main cotton channel 11 that needs to be dealt with. The operator can start the spray valve protection through the control module and increase the motor speed of the cotton opener to reduce the amount of cotton accumulation.

[0073] (2) When the number of strikes of the main cotton flow spray valve group 31 and the number of strikes of the return cleaning spray valve group 32 increase simultaneously, it indicates that the cotton flow to be inspected contains a high amount of impurities and the cotton itself is dirty. The operator can increase the motor speed of the cotton opener through the control module and reduce the parameters of the foreign fiber detection module 2 and the parameters of the main cotton flow spray valve group 31 to reduce misjudgment and reduce the amount of cotton accumulation.

[0074] Specifically, the parameters of the aforementioned foreign fiber detection module 2 refer to the sensitivity of the camera module 22 and the image recognition module connected to the camera module 22 in detecting foreign fibers, the types of foreign fibers detected, and the size parameters of different types of foreign fibers; the parameters of the main cotton flow spray valve group 31 and the parameters of the return cleaning spray valve group 32 refer to the number of valves opened at a single time and the duration of the valve opening; the number of strikes of the main cotton flow spray valve group 31 and the number of strikes of the return cleaning spray valve group 32 refer to the cumulative number of strikes of the spray valve per unit time, and the unit time here refers to 30 seconds, 60 seconds or other time values ​​before statistical sampling.

[0075] Further, according to the test paper test results and the quality requirements of the yarn products, in the preferred embodiment of the present application, the first cotton amount threshold is set to 20%, and the second cotton amount threshold is set to 80%. In other feasible solutions of the embodiment of the present application, the actual setting value of the first cotton amount threshold and the actual setting value of the second cotton amount threshold can be adaptively adjusted according to the type of raw cotton in the cotton spinning mill and the quality requirements of the yarn products.

[0076] In other feasible schemes of the embodiments of the present application, the sensing component can also be set as a pressure sensor or other types of sensors. The sensing component only needs to be able to respond to the amount of cotton dropped in the cotton storage box 13 in real time under a preset cotton amount threshold condition.

[0077] It should be noted that all the control methods mentioned above that can be directly adjusted online by the control module can be manually controlled and adjusted by the operator according to actual production needs in the embodiments of the present application.

[0078] To sum up, the implementation principle of the "a return cleaning device for detecting and removing foreign fibers in cotton" disclosed in the first embodiment of the present application is as follows: the cotton flow to be inspected enters the return cleaning device through the main cotton channel 11, and the cotton flow to be inspected in the main cotton channel 11 is divided into a main cotton flow A without foreign fibers and a mixed cotton A containing foreign fibers through multiple groups of foreign fiber detection modules 2, and the mixed cotton A is knocked out and transmitted to the opening module 5 for opening through the main cotton flow spray valve group 31 and the mixed cotton transmission module 4, thereby realizing the first single-sided detection and double-sided detection of the cotton flow to be inspected. After opening, the impure cotton A enters the return cleaning channel 12, and is subjected to a second single-sided inspection and a double-sided inspection by multiple groups of foreign fiber detection modules 2, and the cotton flow to be inspected in the return cleaning channel 12 is divided into a main cotton flow B without foreign fibers and impure cotton B containing foreign fibers, and the impure cotton B is knocked out by the return cleaning spray valve group 32 and the impure cotton conveying module 2 and transmitted to the waste cotton collecting module 7 for collection; and the control module obtains and compares the number of strikes D1 of the main cotton flow spray valve group 31 at the main cotton channel 11 and the number of strikes D2 of the return cleaning spray valve group 32 at the return cleaning channel 12, so that the main cotton flow B with insufficient impurities is transmitted to the opening module 5 again for opening, and then sent to the return cleaning channel 12 again, so as to realize multi-channel and cyclic detection of the main cotton flow B, and transmit the main cotton flow B with sufficient impurities to the downstream production line, thereby realizing efficient recovery and utilization of impure cotton. Ultimately, while effectively improving the detection rate of foreign fibers, the final amount of waste cotton was reduced, and multi-channel cycle detection and recycling of impure cotton was achieved, effectively reducing material waste. Embodiment 2:

[0079] Reference Figure 8 , Fig. 9The difference between the embodiment of the present application and the embodiment one is that the return cleaning device in the embodiment of the present application is composed of a body 1 and a main cotton channel 11, a return cleaning channel 12, a foreign fiber detection module 2, a spray valve module 3, a trash cotton transmission module 1 4, an opening module 5, a trash cotton transmission module 2 6, a waste cotton collection module 7, a recovered cotton collection module 9 and a control module.

[0080] The recovered cotton collection module 9 includes a recovered cotton collection fan 91 and a recovered cotton collection tray 92. The inlet end of the recovered cotton collection fan 91 is connected to the outlet of the return cleaning channel 12, and the outlet end of the recovered cotton collection fan 91 is connected to the inlet of the recovered cotton collection tray 92. The outlet of the recovered cotton collection tray 92 is open. In the actual production process, the outlet of the recovered cotton collection tray 92 can also be detachably connected to the collection bag to realize the direct collection of the recovered cotton at the outlet of the return cleaning channel 12; the outlet of the recovered cotton collection tray 92 can also be connected to the front end of the main cotton channel 11 through a pipeline to realize the re-circulation and re-inspection of the recovered cotton.

[0081] The return cleaning equipment in the second embodiment of the present application can realize the direct collection of the recycled cotton, which is convenient for the cotton spinning mill to adaptively process the recycled cotton according to its own needs. The adaptability and operability of the equipment are higher.

[0082] Second, refer to Fig.10 The present application also provides a method for detecting and removing foreign fibers in cotton, which is performed using a return cleaning device for detecting and removing foreign fibers in cotton as described above. The method comprises the following steps: The cotton flow to be inspected enters the main cotton channel 11 and flows from the inlet of the main cotton channel 11 toward the outlet of the main cotton channel 11 .

[0083] In this process, the cotton flow to be inspected in the main cotton channel 11 is divided into a main cotton flow A without foreign fibers and a mixed cotton flow A containing foreign fibers by using multiple groups of foreign fiber detection modules 2 .

[0084] Furthermore, the trash cotton A is knocked out and transmitted to the opening module 5 for opening through the spray valve module 3 and the trash cotton transmission module 4, and the main cotton flow A is transmitted to the next process of the production line through the main cotton channel 11; the trash cotton A after opening is sent to the return cleaning channel 12, and the cotton flow to be inspected in the return cleaning channel 12 is divided into the main cotton flow B without foreign fibers and the trash cotton B containing foreign fibers through multiple groups of foreign fiber detection modules 2.

[0085] Among them, the multiple groups of foreign fiber detection modules 2 are preferably three groups, and the three groups of foreign fiber detection modules 2 are divided into a single-sided detection group and a double-sided detection group. The single-sided detection group is composed of a group of foreign fiber detection modules 2, and the single-sided detection group is installed on one side of the main cotton channel 11 and the return cleaning channel 12, and the single-sided detection group is used to realize single-sided detection of the cotton flow in the main cotton channel 11 and the return cleaning channel 12; the double-sided detection group is composed of two groups of foreign fiber detection modules 2, and the two groups of foreign fiber detection modules 2 in the double-sided detection group can be arranged in sequence on both sides of the main cotton channel 11 and the return cleaning channel 12 along the direction of the cotton flow conveyed by the main cotton channel 11, and can also be arranged relatively on both sides of the main cotton channel 11 and the return cleaning channel 12, and the double-sided detection group is used to realize double-sided detection of the cotton flow in the main cotton channel 11 and the return cleaning channel 12; the single-sided detection group is located at the front end of the double-sided detection group, and the main cotton channel 11 is a straight channel between the single-sided detection group and the double-sided detection group. Multiple groups of foreign fiber detection modules 2 can perform single-sided detection and double-sided detection on the cotton flow to be inspected in the main cotton channel 11 and the return channel 12 in sequence, effectively improving the detection rate of foreign fibers; at the same time, the cotton flow to be inspected can be in a straight flow state during the single-sided detection and double-sided detection process, effectively reducing the cotton knots caused by the bending of the flow channel of the cotton flow to be inspected, and effectively ensuring the transportation efficiency of the main cotton flow.

[0086] Furthermore, the trash cotton B is transmitted to the waste cotton collecting module 7 through the spray valve module 3 and the trash cotton transmission module 2 6 .

[0087] Obtain the number of strikes D1 of the spray valve module 3 at the main cotton channel 11 and the number of strikes D2 of the spray valve module 3 at the return cleaning channel 12, and based on the comparison between D1 and D2, select: convey the main cotton flow B to the opening module 5 again for loosening and convey the opened main cotton flow B to the return cleaning channel 12 again; or convey the main cotton flow B to the downstream production line; or recycle the main cotton flow B.

[0088] At the same time, according to the comparison between D1 and D2, the working mode of the spray valve module 3 and the working parameters of the spray valve module 3 in the working mode are adjusted.

[0089] Specifically, the comparison between D1 and D2 satisfies the following conditions: 1. When D2 < D1 * E, it indicates that the processing capacity of the return cleaning spray valve group 32 needs to be increased, and the cotton flow at the outlet of the return cleaning channel 12 has not been processed cleanly and cannot be directly merged into the main cotton flow. The control module controls the cotton splitter to open the cotton splitting pipe 1 821 and close the cotton splitting pipe 2 822 synchronously, so that the cotton flow at the outlet of the return cleaning channel 12 is transmitted to the opening module 5 again through the return cleaning cotton collection fan 81 and the cotton splitting pipe 1 821 for opening, and the cotton flow after opening again enters the return cleaning channel 12, so as to realize multiple and cyclic detection of the cotton flow at the outlet of the return cleaning channel 12. At the same time, the control module controls the spray valve module 3 and the opening module 5 to make the following adjustments: a. Improve the parameters and sensitivity of the foreign fiber detection module 2 on both sides of the return cleaning channel 12; b. Improve the parameters of the return cleaning spray valve group 32 (including the number of valves opened at a single time and the valve opening time); C. Reduce the motor speed of the cotton opener and increase the degree of opening to improve the foreign fiber detection rate of the cotton flow in the return cleaning channel 12.

[0090] 2. When D2 ≥ D1 * E, it indicates that the sensitivity and parameters of the multiple groups of foreign fiber detection modules 2 on both sides of the return channel 12 are high, and the cotton flow at the outlet of the return channel 12 has been fully cleaned and can be directly merged into the main cotton flow. The control module controls the cotton splitter to close the cotton dividing tube 1 821 and the cotton dividing tube 2 822 accordingly, so that the cotton flow at the outlet of the return channel 12 is collected to the outlet of the main cotton channel 11 through the return cotton collection fan 81 and the cotton dividing tube 2 822 and enters the downstream production line. At the same time, the control module controls the spray valve module 3 and the opening module 5 to make the following adjustments: a. Improve the parameters and sensitivity of the foreign fiber detection module 2 on both sides of the main cotton channel 11; b. Improve the parameters of the main cotton flow spray valve group 31 (including the number of single valve openings and the valve opening time); C. Increase the motor speed of the cotton opener, thereby effectively improving the overall processing capacity of the equipment and improving the efficiency of cotton detection and removal.

[0091] 3. When D2 increases sharply and D1 does not change much, it indicates that there may be cotton hanging in the return channel 12 that needs to be dealt with, and the control module starts the spray valve protection accordingly.

[0092] 4. When D1 and D2 increase or decrease synchronously, it reflects that the impurity content of the cotton raw material changes. The operator can adjust the spray valve module 3 and the opening module 5 through the control module according to the actual quality requirements of the cotton spinning products.

[0093] According to actual tests and calculations, the above E value is preferably 80%. It should be noted that the above E value can be adaptively adjusted according to the raw cotton types and actual quality requirements of the cotton spinning mill; the raw cotton types mentioned here mainly refer to Xinjiang cotton, Turkish cotton, American cotton, Australian cotton, Indian cotton, etc.

[0094] In the actual production process, the above-mentioned method for detecting and removing foreign fibers in cotton can be used to realize single-sided and double-sided detection of the main cotton flow in the production line, effectively clear out foreign fibers in the cotton flow to be inspected, and knock out the trash cotton in the cotton flow to be inspected; and the trash cotton can be cleared and re-inspected, so as to realize multiple single-sided and double-sided detection and cyclic re-inspection and foreign fiber removal of the trash cotton, effectively realize the recycling of the trash cotton, reduce the waste of cotton in the process of foreign fiber removal, and do not require additional working hours, which is beneficial to improve the foreign fiber detection and removal rate at the same time, and effectively guarantee the economic benefits of the cotton spinning mill.

[0095] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0096] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cleaning device for detecting and removing foreign fibers in cotton, characterized in that: The invention comprises a machine body (1), and a main cotton channel (11), a return clean channel (12), a foreign fiber detection module (2), a spray valve module (3), a first trash cotton transmission module (4), an opening module (5), a second trash cotton transmission module (6), a waste cotton collection module (7), and a control module, wherein the main cotton channel (11) and the return clean channel (12) are arranged in parallel, and the inlet of the return clean channel (12) is connected to the outlet of the opening module (5); the foreign fiber detection module (2) is arranged on both sides of the main cotton channel (11) and the return clean channel (12). A plurality of groups are provided, wherein the plurality of groups of foreign fiber detection modules (2) are used to perform multiple foreign fiber detections on the cotton flow in the main cotton channel (11) and the return cleaning channel (12); the spray valve module (3) is used to knock out the trash cotton detected in the main cotton channel (11) and the trash cotton detected in the return cleaning channel (12); the first trash cotton transmission module (4) is used to transport the trash cotton knocked out from the main cotton channel (11) to the opening module (5); and the second trash cotton transmission module (6) is used to transport the trash cotton knocked out from the return cleaning channel (12) to the waste cotton collection module (7).

2. A cleaning device for detecting and removing foreign fibers in cotton according to claim 1, characterized in that: The foreign fiber detection module (2) comprises a light source module (21) and a camera module (22), wherein the light source module (21) is used to provide illumination for the main cotton channel (11) and the return cleaning channel (12), and the camera module (22) is used to collect image data in the main cotton channel (11) and the return cleaning channel (12).

3. A cleaning device for detecting and removing foreign fibers in cotton according to claim 1, characterized in that: The spray valve module (3) comprises a main cotton flow spray valve group (31) and a return clean water spray valve group (32); the main cotton flow spray valve group (31) comprises a plurality of main cotton flow spray valve units arranged in sequence along a main cotton channel (11); and the return clean water spray valve group (32) comprises a plurality of return clean water spray valve units arranged in sequence along a return clean water channel (12).

4. A cleaning device for detecting and removing foreign fibers in cotton according to any one of claims 1 to 3, characterized in that: A cotton storage box (13) is provided between the trash cotton transmission module 1 (4) and the opening module (5), and a sensor component for detecting the amount of dropped cotton in the cotton storage box (13) is provided in the cotton storage box (13).

5. A cleaning device for detecting and removing foreign fibers in cotton according to claim 4, characterized in that: According to the amount of cotton dropped in the cotton storage box (13), a first cotton amount threshold and a second cotton amount threshold are preset on the cotton storage box (13), and the first cotton amount threshold is smaller than the second cotton amount threshold; The sensing component is configured to: when the amount of cotton dropped in the cotton storage box (13) reaches a first cotton amount threshold or a second cotton amount threshold, the sensing component sends a signal to the control module; The control module controls the working mode of the spray valve module (3) and the working parameters of the spray valve module (3) in the working mode according to the amount of cotton dropped in the cotton storage box (13).

6. A cleaning device for detecting and removing foreign fibers in cotton according to any one of claims 1 to 3, characterized in that: The invention also comprises a return clean cotton module (8), wherein the return clean cotton module (8) comprises a return clean cotton collecting fan (81) and a cotton separation component (82), wherein the inlet end of the return clean cotton collecting fan (81) is connected to the outlet of the return clean cotton channel (12), and the cotton separation component (82) is used to connect the outlet end of the return clean cotton collecting fan (81) to either the inlet end of the opening module (5) or the outlet end of the main cotton channel (11).

7. A cleaning device for detecting and removing foreign fibers in cotton according to any one of claims 1 to 3, characterized in that: The invention also comprises a recovered cotton collection module (9), wherein the recovered cotton collection module (9) comprises a recovered cotton collection fan (91) and a recovered cotton collection tray (92), wherein the inlet end of the recovered cotton collection fan (91) is connected to the outlet of the return cleaning channel (12), the outlet end of the recovered cotton collection fan (91) is connected to the inlet of the recovered cotton collection tray (92), and the outlet of the recovered cotton collection tray (92) is arranged to be open.

8. A method for detecting and removing foreign fibers in cotton, which is carried out using the return cleaning device for detecting and removing foreign fibers in cotton as claimed in any one of claims 1 to 7, characterized in that: The steps include: The cotton flow to be inspected in the main cotton channel (11) is divided into a main cotton flow A without foreign fibers and a mixed cotton flow A containing foreign fibers by using a plurality of groups of foreign fiber detection modules (2); The impure cotton A is knocked out through the spray valve module (3) and the impure cotton transmission module 1 (4) and transmitted to the opening module (5) for opening; The loosened impure cotton A is sent into a cleaning channel (12), and the cotton flow to be inspected in the cleaning channel (12) is divided into a main cotton flow B without foreign fibers and impure cotton B containing foreign fibers by using multiple groups of foreign fiber detection modules (2); The trash cotton B is transmitted to the waste cotton collection module (7) through the spray valve module (3) and the trash cotton transmission module 2 (6); The number of times D1 of the blows of the spray valve module (3) at the main cotton channel (11) and the number of times D2 of the blows of the spray valve module (3) at the return cleaning channel (12) are obtained, and based on the comparison between D1 and D2, the main cotton flow B is again transmitted to the opening module (5) for opening and the opened main cotton flow B is again sent to the return cleaning channel (12), or the main cotton flow B is transmitted to the downstream production line, or the main cotton flow B is collected and stored.

9. A method for detecting and removing foreign fibers in cotton according to claim 8, characterized in that: According to the comparison between D1 and D2, the working mode of the spray valve module (3) and the working parameters of the spray valve module (3) in the working mode are adjusted.

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