Processing link seed cotton quality online detection system and application method thereof

Abstract

The invention discloses a processing link seed cotton quality online detection system and an application method thereof, and relates to the technical field of cotton processing, a cotton conveying component is internally provided with a cotton conveying channel for seed cotton to pass through, one side of the cotton conveying component is provided with a sampling port communicated with the cotton conveying channel, and a sampling cotton pressing component is installed at the position, corresponding to the sampling port, in the cotton conveying channel; the detection part is installed at the position, corresponding to the sampling opening, outside the cotton conveying part, the detection part is electrically connected with the control module, and the sampling cotton pressing part is used for sampling seed cotton passing through the cotton conveying channel and driving the seed cotton to move in the direction close to the detection part; and the detection part can perform information acquisition and online detection on the seed cotton sample obtained by the sampling and cotton pressing part, and transmits a detection result to the control module. According to the invention, the seed cotton can be dynamically and accurately sampled, and the moisture regain and the impurity rate can be integrally and accurately detected in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of cotton processing, and particularly to an on-line detection system for the quality of unginned cotton in the processing link and an application method thereof. Background Art

[0002] With the wide application of machine-picked cotton, problems such as the moisture regain rate and impurity content rate of unginned cotton have become increasingly prominent, seriously affecting the quality of cotton processing. In order to improve the quality and efficiency of cotton processing, cotton processing plants need to conduct on-line detection of the quality of unginned cotton in the processing link, optimize the process flow according to the detection data, and adjust the process parameters of cotton processing equipment in real time to achieve closed-loop control during the processing process, so as to improve the quality of cotton processing.

[0003] At present, the processing methods of most cotton processing plants are relatively extensive. In the actual processing production process, for unginned cotton with different impurity content rates and moisture regain rates, a single processing process and equipment parameters are still used for processing, or the equipment parameters are adjusted relying on the experience of operators, lacking accuracy and real-time performance, unable to achieve "matching the processing to the cotton" and refined processing, seriously restricting the improvement of the quality of the finished lint cotton, and directly affecting the economic benefits of the processing plant.

[0004] The existing detection methods for quality indicators such as the moisture regain rate and impurity content rate of cotton usually mainly focus on off-line detection. Samples are taken manually to the detection room for detection, which has the defects of low sampling efficiency and danger in on-site sampling. Moreover, the cotton samples to be detected are affected by factors such as sealing and storage, making it difficult to accurately reflect the property parameters of the cotton samples at that time, and unable to adjust the processing process and equipment parameters in a timely manner according to relevant data. Summary of the Invention

[0005] The purpose of the present invention is to provide an on-line detection system for the quality of unginned cotton in the processing link and an application method thereof to solve the problems existing in the above-mentioned prior art, achieve dynamic and accurate sampling of unginned cotton, and integrated real-time and accurate detection of the moisture regain rate and impurity content rate.

[0006] To achieve the above purpose, the present invention provides the following solutions:

[0007] The present invention provides an on-line detection system for the quality of unginned cotton in the processing link, including a cotton conveying and sampling detection module and a control module. The cotton conveying and sampling detection module includes a cotton conveying component, a sampling and pressing component, and a detection component. An unginned cotton conveying channel is provided inside the cotton conveying component. A sampling port communicating with the unginned cotton conveying channel is provided on one side of the cotton conveying component. The sampling and pressing component is installed at a position corresponding to the sampling port in the unginned cotton conveying channel, and the detection component is installed at a position outside the cotton conveying component corresponding to the sampling port. The detection component is electrically connected to the control module. The sampling and pressing component is used to sample the unginned cotton passing through the unginned cotton conveying channel and drive the unginned cotton to move towards the detection component. The detection component can collect information and perform on-line detection on the unginned cotton sample obtained by the sampling and pressing component, and transmit the detection result to the control module.

[0008] Preferably, the cotton conveying component includes a cotton conveying pipeline and two flange connecting pipes. The unginned cotton conveying channel is formed inside the cotton conveying pipeline, and the two flange connecting pipes are respectively connected to both ends of the cotton conveying pipeline. The cotton conveying pipeline includes a pipeline barrel body, an observation window, and a ring pressing plate. The unginned cotton conveying channel is formed inside the pipeline barrel body, and the sampling port is opened on one side wall of the pipeline barrel body. An observation port is also opened on the side wall of the pipeline barrel body. The ring pressing plate is detachably connected to the observation port, and the ring pressing plate presses the observation window at the observation port.

[0009] Preferably, the cotton conveying pipeline further includes a door plate and an outer housing. The outer housing is installed on one side of the door plate, and the door plate and the sampling port are located on the same side wall of the pipeline barrel body. One side of the door plate is hinged to the side wall of the pipeline barrel body, and the other side of the door plate is detachably connected to the outer wall of the pipeline barrel body. An installation cavity is formed between the outer housing and the door plate. Both the detection component and the control module are installed in the installation cavity. A detection port is opened on the door plate, and the detection component is installed at the detection port.

[0010] Preferably, the sampling and cotton pressing component includes a mounting frame, a driving element, a flipping sampling pressing plate and a connecting rotating shaft. The mounting frame is installed on the outer wall of the cotton conveying component corresponding to the sampling port, and the door plate is installed on the mounting frame. The driving element is installed on one side of the mounting frame. The first end of the connecting rotating shaft is connected to the output shaft of the driving element. The second end of the connecting rotating shaft passes through the first side wall of the mounting frame and is rotatably connected to the second side wall of the mounting frame. The first side wall and the second side wall of the mounting frame are oppositely arranged. The connecting rotating shaft is perpendicular to the axis of the cotton conveying channel. One end of the flipping sampling pressing plate is installed on the connecting rotating shaft. The driving element can drive the connecting rotating shaft to rotate and make the flipping sampling pressing plate rotate to be in a cotton conveying state, a cotton collecting state or a cotton pressing state. In the cotton conveying state, the flipping sampling pressing plate does not block the cotton conveying channel and is arranged away from the detection component. In the cotton collecting state, the flipping sampling pressing plate blocks the cotton conveying channel and makes the unginned cotton concentrate on one side of the flipping sampling pressing plate. In the cotton pressing state, the flipping sampling pressing plate does not block the cotton conveying channel and presses the concentrated unginned cotton sample on the detection component.

[0011] Preferably, the mounting frame includes a bottom frame and a sampling frame. The bottom frame is installed on the outer periphery of the sampling port. The sampling frame is installed on the side of the bottom frame away from the cotton conveying component. The door plate is connected to the side of the sampling frame away from the bottom frame. The driving element is a servo motor. The servo motor is installed on one side of the sampling frame through a motor base. The connecting rotating shaft can pass through the sampling frame. A speed reducer is installed on the output shaft of the servo motor. The speed reducer is connected to the first end of the connecting rotating shaft through a coupling. A deep groove ball bearing and a bearing seat are installed at the second end of the connecting rotating shaft. The bearing seat is installed on the sampling frame.

[0012] Preferably, the end of the flipping sampling pressing plate away from the connecting rotating shaft is arc-shaped, and a plurality of strip-shaped grooves arranged side by side are formed on the flipping sampling pressing plate. The length direction of the strip-shaped grooves is perpendicular to the axial direction of the rotating shaft.

[0013] Preferably, the detection component includes an information collection component and a quality detection component. Both the information collection component and the quality detection component are electrically connected to the control module. The information collection component is used to collect information of the unginned cotton sample collected by the sampling and cotton pressing component. The quality detection component is used to perform on-line detection on the information collected by the information collection component. The information collected by the information collection component and the quality detection component can be transmitted to the control module.

[0014] Preferably, the information collection component includes an electrode plate, a detection window, a light source, a camera sliding plate, a camera lifting plate, an industrial camera, a camera box, and a pressure sensor. One side of the camera box is open, and the detection window is installed at the opening of the camera box. The camera box is installed on the door panel such that the detection window is located at the detection port. The camera sliding plate can be installed at different positions on the inner wall of the camera box. The camera lifting plate is installed on the side of the camera sliding plate away from the inner wall of the camera box. The industrial camera is installed on the side of the camera lifting plate away from the camera sliding plate, and the camera lens of the industrial camera is set to face the detection window. The light source is installed in the camera box through a light source fixing plate, and the installation position of the light source fixing plate in the camera box can be adjusted. The light source is close to the observation window. The electrode plate is installed on the door panel and is close to the detection window. The pressure sensor is installed on the electrode plate, and the surface of the pressure sensor protrudes from the electrode plate. When the sampling cotton pressing component presses the collected cottonseed sample against one side of the detection window, the pressure sensor can detect the pressure and transmit it to the control module.

[0015] Preferably, the control module includes an industrial computer, a control box, and a touch screen. Both the industrial computer and the control box are installed on the side of the door panel away from the cotton conveying pipeline. The touch screen is installed on the outer side wall of the outer cover. Both the touch screen and the industrial computer are electrically connected to the control box. The quality detection component is installed on the industrial computer. The information detected by the quality detection component can be transmitted to the control box, and the control box can control the touch screen to display the detection information.

[0016] The present invention also provides an application method of the on-line cottonseed quality detection system in the processing link based on the above technical solution, including the following steps:

[0017] S1. Turn on the power of the on-line cottonseed quality detection system in the processing link, check the status of the on-line cottonseed quality detection system in the processing link, and make the servo motor of the sampling cotton pressing component located at the zero position. The flipping sampling pressing plate of the sampling cotton pressing component is in a vertical state, and the free end of the flipping sampling pressing plate faces upward.

[0018] S2. Start the cottonseed quality on-line detection software corresponding to the detection component, wait for successful communication, the servo motor is located at the origin position, and make the flipping sampling pressing plate rotate counterclockwise by 15°. At this time, the cotton conveying pipeline is in the cotton conveying state, wait for the start of sampling, and at the same time, the cottonseed is conveyed from bottom to top in the cotton conveying channel.

[0019] S3. Start sampling. Control the flipping sampling press plate to rotate counterclockwise to 110° through the servo motor. When reaching the cotton collecting point position, start cotton collecting. At this time, the flipping sampling press plate is in the cotton collecting state and grabs the unginned cotton. Meanwhile, monitor the torque of the servo motor. When the torque first reaches the set value, the flipping sampling press plate stops cotton collecting and continues to rotate counterclockwise to the cotton pressing point until the flipping sampling press plate is in the cotton pressing state; if after 3 s, the torque does not reach the set value, the flipping sampling press plate also stops cotton collecting and continues to rotate counterclockwise to the cotton pressing point until the flipping sampling press plate is in the cotton pressing state;

[0020] S4. After the flipping sampling press plate reaches the cotton pressing point position, start cotton pressing. When the pressure detected by the pressure sensor in the detection component reaches the set value, perform cotton sample detection through the quality detection component in the detection component; if the pressure detected by the pressure sensor never reaches the pressure set value, when the flipping sampling press plate rotates to the vertical state and the free end of the flipping sampling press plate faces downwards, also perform cotton sample detection through the quality detection component;

[0021] S5. After the detection is completed, control the flipping sampling press plate to rotate clockwise back to the origin position through the servo motor, release the unginned cotton sample, and wait for the next sampling process.

[0022] The present invention has achieved the following technical effects compared with the prior art:

[0023] The on-line detection system for the quality of unginned cotton in the processing link and its application method provided by the present invention are provided. An unginned cotton conveying channel for the passage of unginned cotton is arranged inside the cotton conveying component to realize the conveying of unginned cotton. A sampling port communicated with the unginned cotton conveying channel is arranged on one side of the cotton conveying component. The sampling and cotton pressing component is installed at the position corresponding to the sampling port in the unginned cotton conveying channel, and the detection component is installed at the position corresponding to the sampling port outside the cotton conveying component. The detection component is electrically connected to the control module. The sampling and cotton pressing component is used to sample the unginned cotton passing through the unginned cotton conveying channel and drive the unginned cotton to move towards the direction close to the detection component, so as to be able to sample the unginned cotton multiple times during the conveying process of the unginned cotton, realize the dynamic and accurate sampling of the unginned cotton. The detection component can collect information and perform on-line detection on the unginned cotton sample obtained by the sampling and cotton pressing component to obtain the moisture regain rate, impurity content, etc. of the unginned cotton, and transmit the detection result to the control module to realize the on-line detection of the quality of the unginned cotton. Compared with the traditional off-line detection, it has the characteristics of accurate detection, high detection efficiency, simple and practical structure. At the same time, through the above design, it can be installed in the unginned cotton pipelines of different processing plants to realize the continuous and stable sampling and real-time on-line detection of unginned cotton under high flow velocity. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the online detection system for the quality of unginned cotton in the processing link in the first embodiment;

[0026] Figure 2 is Figure 1 side view of;

[0027] Figure 3 It is a schematic structural diagram after removing the outer housing in the first embodiment;

[0028] Figure 4 It is a schematic structural diagram when the door panel is in the open state in the first embodiment;

[0029] Figure 5 It is a schematic structural diagram of the sampling and pressing cotton component in the first embodiment;

[0030] Figure 6 It is a schematic diagram of the action change of the flipping sampling pressing plate in the first embodiment;

[0031] Figure 7 It is a schematic diagram of the internal structure of the camera box in the first embodiment;

[0032] Figure 8 It is a flowchart of the application method of the online detection system for the quality of unginned cotton in the processing link in the second embodiment.

[0033] In the figure: 1 - flange connecting pipe, 2 - pipe barrel body, 3 - door panel, 4 - motor base, 5 - coupling, 6 - servo motor, 7 - reducer, 8 - handle tensioning plate, 9 - hand-tightening handle, 10 - pressure sensor, 11 - outer housing, 12 - sampling frame, 13 - bottom frame, 14 - cable joint, 15 - deep groove ball bearing, 16 - bearing seat, 17 - hinge, 18 - rubber sealing strip, 19 - ring pressing plate, 20 - observation window, 21 - industrial control computer, 22 - camera box, 23 - control box, 24 - connecting rotating shaft, 25 - flipping sampling pressing plate, 26 - wiring hole, 27 - camera lifting plate, 28 - camera fixing plate, 29 - industrial camera, 30 - camera lens, 31 - camera sliding plate, 32 - light source fixing plate, 33 - light source, 34 - detection window, 35 - fixing strip, 36 - electrode plate. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The purpose of the present invention is to provide an on-line detection system for the quality of unginned cotton in the processing link and its application method to solve the problems existing in the prior art, realize dynamic and accurate sampling of unginned cotton, and integrated real-time and accurate detection of the moisture regain rate and impurity content rate.

[0036] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Embodiment 1

[0038] As Figures 1 - 7 shown, this embodiment provides an on-line detection system for the quality of unginned cotton in the processing link, including a cotton conveying and sampling detection module and a control module. The cotton conveying and sampling detection module includes a cotton conveying component, a sampling and pressing cotton component, and a detection component. An unginned cotton conveying channel for the passage of unginned cotton is provided inside the cotton conveying component to realize the conveying of unginned cotton. A sampling port communicated with the unginned cotton conveying channel is provided on one side of the cotton conveying component. The sampling and pressing cotton component is installed at a position corresponding to the sampling port in the unginned cotton conveying channel, and the detection component is installed outside the cotton conveying component at a position corresponding to the sampling port. The detection component is electrically connected to the control module. The sampling and pressing cotton component is used to sample the unginned cotton passing through the unginned cotton conveying channel and drive the unginned cotton to move in the direction close to the detection component, so as to be able to sample the unginned cotton multiple times during the conveying process of the unginned cotton, realize dynamic and accurate sampling of the unginned cotton. The detection component can collect information and perform on-line detection on the unginned cotton sample obtained by the sampling and pressing cotton component to obtain the moisture regain rate, impurity content rate, etc. of the unginned cotton, and transmit the detection result to the control module to realize on-line detection of the quality of unginned cotton. Compared with the traditional off-line detection, it has the characteristics of accurate detection, high detection efficiency, simple and practical structure. At the same time, through the above design, it can be installed in the unginned cotton pipelines of different processing plants to continuously and stably sample and perform real-time on-line detection on the unginned cotton under high flow rates.

[0039] Specifically, the cotton conveying component includes a cotton conveying pipeline and two flange connecting pipes 1. A cotton conveying channel is formed inside the cotton conveying pipeline, and unginned cotton is conveyed from bottom to top inside the cotton conveying pipeline. The two flange connecting pipes 1 are respectively connected to both ends of the cotton conveying pipeline by bolts. Moreover, this embodiment can be adapted to cotton conveying pipelines with different pipe diameters and can be installed between multiple processes such as before and after the drying tower. The circular connecting ports of the flange connecting pipes 1 can be made into different diameters according to the actual pipe diameter of the processing factory, ensuring the versatility and stability of the equipment. And the inner diameter of the cotton conveying pipeline is related to the conveying air volume and conveying wind speed of the processing factory, and the inner diameter of the cotton conveying pipeline is generally between 350 mm and 370 mm.

[0040] The cotton conveying pipeline includes a pipeline barrel body 2, an observation window 20, and a ring pressing plate 19. A cotton conveying channel is formed inside the pipeline barrel body 2, and a sampling port is opened on one side wall of the pipeline barrel body 2. An observation port is also opened on the side wall of the pipeline barrel body 2. Preferably, the sampling port is opened on the front surface of the pipeline barrel body 2, and the observation port is opened on the side surface of the pipeline barrel body 2. An embedding groove is provided at the observation port. The ring pressing plate 19 is detachably connected to the observation port, and the ring pressing plate 19 presses the observation window 20 into the embedding groove at the observation port. The observation window 20 is preferably made of acrylic board, which is convenient for observing the internal situation of the cotton conveying pipeline. The middle of the ring pressing plate 19 is hollowed out. The inner circle size of the ring pressing plate 19 is smaller than the outer circle size of the observation window 20. The ring pressing plate 19 is fixed on the pipeline barrel body 2 by screws to prevent the position of the observation window 20 from shifting.

[0041] The cotton conveying pipeline further includes a door panel 3 and an outer housing 11. The outer housing 11 serves to protect the internal components. The outer housing 11 is installed on one side of the door panel 3. And the door panel 3 and the sampling port are located on the same side wall of the pipeline barrel body 2. One side of the door panel 3 is hinged to the side wall of the pipeline barrel body 2 by a hinge 17, and the other side of the door panel 3 is detachably connected to the outer wall of the pipeline barrel body 2. As a specific implementation manner, the other side of the door panel 3 and the outer wall of the pipeline barrel body 2 are detachably connected by a handle tensioning plate 8. And the handle tensioning plate 8 can be set to a similar buckle design or can be fixed on the cotton conveying pipeline, and the door panel 3 and the handle tensioning plate 8 are connected by bolts. An installation cavity is formed between the outer housing 11 and the door panel 3. The detection component and the control module are both installed in the installation cavity. A detection port is opened on the door panel 3, and the detection component is installed at the detection port, thereby ensuring that the detection component can detect the unginned cotton sample collected by the sampling and cotton pressing component. A cable connector 14 is also installed on the door panel 3.

[0042] The sampling and pressing cotton component includes a mounting frame, a driving element, a flipping sampling pressing plate 25 and a connecting rotating shaft 24. The mounting frame is installed at a position on the outer wall of the cotton conveying component corresponding to the sampling port, and the door panel 3 is installed on the mounting frame. The mounting frame serves to provide a stable support. The driving element is installed on one side of the mounting frame. The first end of the connecting rotating shaft 24 is connected to the output shaft of the driving element. The second end of the connecting rotating shaft 24 passes through the first side wall of the mounting frame and is rotatably connected to the second side wall of the mounting frame. The first side wall and the second side wall of the mounting frame are oppositely arranged. The connecting rotating shaft 24 is perpendicular to the axis of the cotton conveying channel. One end of the flipping sampling pressing plate 25 is installed on the connecting rotating shaft 24. The driving element can drive the connecting rotating shaft 24 to rotate and make the flipping sampling pressing plate 25 rotate to be in the cotton conveying state, the cotton collecting state or the cotton pressing state. In the cotton conveying state, the flipping sampling pressing plate 25 does not block the cotton conveying channel and is arranged away from the detection component. In the cotton collecting state, the flipping sampling pressing plate 25 blocks the cotton conveying channel and makes the unginned cotton concentrate on one side of the flipping sampling pressing plate 25. In the cotton pressing state, the flipping sampling pressing plate 25 does not block the cotton conveying channel and presses the concentrated unginned cotton sample on the detection component. Furthermore, through the drive of the driving element, the cotton collecting, cotton pressing and sample placing actions are realized, the continuous and stable collection of the unginned cotton sample in the cotton conveying pipeline under high flow velocity conditions is realized, and the moisture regain rate and impurity content index of the unginned cotton can be detected in real time online, providing reliable data for the adjustment of subsequent cotton processing process parameters, having the characteristics of fast, real-time, accurate and stable sampling, and contributing to the fine processing of cotton.

[0043] The mounting frame includes a bottom frame 13 and a sampling frame 12. The bottom frame 13 is installed on the outer periphery of the sampling port. The sampling frame 12 is installed on the side of the bottom frame 13 away from the cotton conveying component. The door panel 3 is connected to the side of the sampling frame 12 away from the bottom frame 13, and a rubber sealing strip 18 is also provided between the door panel 3 and the sampling frame 12. The sampling frame 12 is composed of four rectangular thick plates, and shaft holes for the connecting rotating shaft 24 to pass through are opened on both side plates of the sampling frame 12. Two handle tightening plates 8 are installed on one of the side plates for tightening the outer housing 11. A protrusion is provided on the side of the door panel 3 and is provided with bolt holes for connecting the hand-tightening handle 9, and the connection between the hand-tightening handle 9 and the handle tightening plate 8 is realized through the hand-tightening handle 9. The sampling frame 12 is fixed on the bottom frame 13 by bolts.

[0044] The driving element is a servo motor 6. The motor base 4 is installed on the sampling frame 12 by bolts. The servo motor 6 is installed on one side of the sampling frame 12 through the motor base 4. The connecting rotating shaft 24 can pass through the sampling frame 12. A reducer 7 is installed on the output shaft of the servo motor 6. The reducer 7 is connected to the first end of the connecting rotating shaft 24 through a coupling 5. A deep groove ball bearing 15 and a bearing seat 16 are installed at the second end of the connecting rotating shaft 24. The bearing seat 16 is installed on the sampling frame 12. Through the cooperation of the above components, the flipping sampling pressing plate 25 can perform accurate flipping actions according to the set requirements.

[0045] The end of the flipping sampling pressing plate 25 away from the connecting rotating shaft 24 is arc-shaped, and a plurality of long grooves arranged side by side are formed in the flipping sampling pressing plate 25. The length direction of the long grooves is perpendicular to the axial direction of the rotating shaft, forming a rack plate shape. Through the above design, the shape of the flipping sampling pressing plate 25 is similar to that of a human hand. The arrangement of the long grooves can simulate human hand sampling when the servo motor 6 drives the flipping sampling pressing plate 25 to perform flipping sampling, effectively improving the adhesion of seed cotton and the passing rate of air flow under high flow rate conditions, reducing the loss of conveying air flow, and solving the problems of pipeline blockage during cotton blocking and insufficient sampling volume of the traditional sampling structure.

[0046] The detection component includes an information acquisition component and a quality detection component. Both the information acquisition component and the quality detection component are electrically connected to the control module. The information acquisition component is used to acquire the information of the seed cotton sample collected by the sampling cotton pressing component, and the quality detection component is used to perform on-line detection on the information acquired by the information acquisition component. The information acquired here includes image information and resistance value information. The information collected by the information acquisition component and the quality detection component can be transmitted to the control module.

[0047] The information acquisition component includes an electrode plate 36, a detection window 34, a light source 33, a camera sliding plate 31, a camera lifting plate 27, an industrial camera 29, a camera box 22, and a pressure sensor 10. A rectangular opening is formed on the inner surface of the door panel 3, and a groove is provided around the rectangular opening. The camera box 22 is composed of six rectangular plates. An opening is provided on the rectangular plate on the front of the camera box 22, and the detection window 34 is installed at the opening of the camera box 22. The detection window 34 is preferably a high-transparency optical glass plate. A wiring hole 26 is provided on the rectangular plate on the back of the camera box 22. The camera box 22 is installed on the door panel 3 through a fixing strip 35 so that the detection window 34 is located at the detection port. The camera sliding plate 31 can be installed at different positions on the inner wall of the camera box 22. As a specific implementation, a waist-shaped long hole is provided on the camera sliding plate 31, and a plurality of through holes are provided on the side wall of the camera box 22. By connecting different through holes to the waist-shaped long hole with bolts, the installation position of the camera sliding plate 31 can be adjusted, so that the industrial camera 29 moves in a direction closer to or farther from the detection window 34. The camera lifting plate 27 is installed on the side of the camera sliding plate 31 away from the inner wall of the camera box 22. The industrial camera 29 is installed on the side of the camera lifting plate 27 away from the camera sliding plate 31 through a camera fixing plate 28. The camera lifting plate 27 serves to lift the industrial camera 29, so that the camera lens 30 of the industrial camera 29 can be aligned with the cottonseed sample at the observation window 20. The camera lens 30 of the industrial camera 29 is arranged facing the detection window 34. The light source 33 is installed in the camera box 22 through a light source fixing plate 32, and the light source panel is arranged obliquely upward. The included angle between the plane where the light source panel is located and the plane where the observation window 20 is located is 45°, which can provide appropriate lighting conditions. The installation position of the light source fixing plate 32 in the camera box 22 can be adjusted, and the adjustment principle is the same as that of the camera sliding plate 31. The light source 33 is arranged near the upper and lower positions of the observation window 20. The light source 33 is preferably an LED lamp. Through the reasonable layout of the structures in the camera box 22, it is ensured that the industrial camera 29 can accurately capture the cotton sample situation to be detected. The electrode plate 36 is installed on the door panel 3 and is installed close to the detection window 34. The electrode plate 36 is designed in an internally hollow shape, and the surface electrode is in a square shape with a loop. The electrode spacing of the electrode plate 36 is 6 mm, and the electrode width of the electrode plate 36 is 10 mm. It is embedded between the groove of the door panel 3 and the observation window 20 and fixed on the door panel 3 with screws. The pressure sensor 10 is installed on the electrode plate 36, and the surface of the pressure sensor 10 protrudes from the electrode plate 36, which is convenient for detecting the pressure applied to the flipping sampling pressing plate 25. When the sampling cotton pressing component presses the collected cottonseed sample on one side of the detection window 34, the pressure sensor 10 can detect the pressure and transmit it to the control module. The information acquisition component integrates the electrode plate 36 and the industrial camera 29, and adopts an integrated detection module combining the resistance method and the image method to simultaneously realize the on-line measurement of the moisture regain rate and impurity content of cottonseed.

[0048] The control module includes an industrial control computer 21, a control box 23 and a touch screen. The industrial control computer 21 and the control box 23 are both installed on the side of the door panel 3 away from the cotton conveying pipeline. The touch screen is installed on the outer side wall of the outer housing 11. Both the touch screen and the industrial control computer 21 are electrically connected to the control box 23. The quality detection component is installed on the industrial control computer 21. The information detected by the quality detection component can be transmitted to the control box 23, and the control box 23 is enabled to control the touch screen to display the detection information for the staff to conveniently and timely obtain the information. At the same time, by real-time feedback of the detection data to the control box 23, it provides support for the dynamic adjustment of the process parameters of "cotton matching according to the quality of cotton", which is highly reliable and economical and practical.

[0049] Embodiment 2

[0050] As Figure 8 shown, this embodiment provides an application method of the on-line cottonseed quality detection system in the processing link based on Embodiment 1, including the following steps:

[0051] S1. Turn on the power of the on-line cottonseed quality detection system in the processing link, check the status of the on-line cottonseed quality detection system in the processing link, ensure that the initial state of the equipment is normal, and all components are in a ready state, laying a foundation for the subsequent sampling and detection process. Make the servo motor 6 of the sampling and pressing cotton component located at the zero position, the flipping sampling pressing plate 25 of the sampling and pressing cotton component in a vertical state, and the free end of the flipping sampling pressing plate 25 facing upward.

[0052] S2. Start the cottonseed quality on-line detection software corresponding to the detection component, wait for successful communication, the servo motor 6 is located at the origin position, and make the flipping sampling pressing plate 25 rotate counterclockwise by 15°, so as to carry away the cotton sample remaining on the flipping sampling pressing plate 25 through the airflow in the cotton conveying pipeline, ensuring accurate sampling next time. At this time, the cotton conveying pipeline is in the cotton conveying state, waiting for a further sampling instruction. The setting of this angle is based on the optimization consideration of the whole sampling process, ensuring the complete release of the cotton sample and accurate grasping of cottonseed next time. At the same time, the cottonseed is conveyed from bottom to top in the cotton conveying channel;

[0053] S3. Start sampling. Control the flipping sampling press plate 25 to rotate counterclockwise to 110° through the servo motor 6. When it reaches the cotton collecting point position, start cotton collection. At this time, the flipping sampling press plate 25 is in the cotton collecting state and grabs the unginned cotton. At the same time, monitor the torque of the servo motor 6. When the torque first reaches the set value, the flipping sampling press plate 25 stops cotton collection and continues to rotate counterclockwise to the cotton pressing point until the flipping sampling press plate 25 is in the cotton pressing state. The torque set value is a torque value preset by the control module. When the unginned cotton sample accumulates on one side of the flipping sampling press plate 25, the torque of the servo motor 6 starts to change. When the actual torque reaches the set torque, it proves that the amount of unginned cotton sample collected by the flipping sampling press plate 25 at this time is appropriate and the detection process can be carried out; if the torque does not reach the set value after 3 s, the flipping sampling press plate 25 also stops cotton collection and continues to rotate counterclockwise to the cotton pressing point until the flipping sampling press plate 25 is in the cotton pressing state, avoiding the flipping sampling press plate 25 from staying stagnant all the time and affecting the detection efficiency; during the cotton collection process, through the dual control of torque and time, it not only ensures that enough cotton samples can be grabbed, but also avoids affecting the equipment operation or sampling effect due to over-sampling and other situations, ensuring the stability and accuracy of each sampling;

[0054] S4. After the flipping sampling press plate 25 reaches the cotton pressing point position, start cotton pressing. When the pressure detected by the pressure sensor 10 in the detection component reaches the set value, the cotton sample is detected through the quality detection component in the detection component. The pressure set value here is a pressure value preset by the control module. According to whether the pressure detected by the pressure sensor 10 reaches this set value, it can be determined whether the pressure condition required for cotton sample detection is reached, and at the same time, the compaction degree of the unginned cotton sample is ensured; if the pressure detected by the pressure sensor 10 never reaches the pressure set value, when the flipping sampling press plate 25 rotates to the vertical state and the free end of the flipping sampling press plate 25 faces down, the cotton sample is also detected through the quality detection component; deciding whether to detect according to the pressure situation ensures that the pressure applied to the cotton sample during detection is relatively constant, which helps to obtain accurate detection results;

[0055] S5. After the detection is completed, control the flipping sampling press plate 25 to rotate clockwise back to the origin position through the servo motor 6, release the unginned cotton sample, and wait for the next sampling process to continuously monitor the quality of the unginned cotton online. After all sampling and detection are completed, shut down the machine.

[0056] During the sampling and detection process, this embodiment can be controlled by a PLC, and a dual-control strategy of torque threshold and time threshold is adopted to collect the unginned cotton samples. By combining the detection values of the pressure sensor 10, the cotton pressing force is dynamically adjusted to ensure stable sampling volume and constant detection pressure. Furthermore, through the process of system startup, flipping sampling, cotton sample collection, cotton pressing detection, cotton sample release, and system shutdown, the moisture regain rate and impurity content rate of the unginned cotton in the cotton conveying pipeline can be accurately obtained. It has high detection efficiency, is economical and practical, and effectively solves the problem of extensive processing in the unginned cotton processing process.

[0057] Specific examples are used in the present invention to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An online detection system for seed cotton quality in the processing stage, characterized by: It includes a cotton conveying sampling detection module and a control module, the cotton conveying sampling detection module includes a cotton conveying component, a sampling cotton pressing component and a detection component, the cotton conveying component is provided with a cotton conveying channel for seed cotton to pass through, one side of the cotton conveying component is provided with a sampling port connected with the cotton conveying channel, the sampling cotton pressing component is installed at a position corresponding to the sampling port in the cotton conveying channel, and the detection component is installed at a position corresponding to the sampling port outside the cotton conveying component, the detection component is electrically connected to the control module, the sampling cotton pressing component is used for sampling the seed cotton passing through the cotton conveying channel, and driving the seed cotton to move towards the direction close to the detection component, the detection component can collect information and conduct online detection on the seed cotton sample obtained by the sampling cotton pressing component, and transmit the detection result to the control module.

2. The online detection system for seed cotton quality in the processing link according to claim 1 is characterized in that: The cotton conveying component includes a cotton conveying pipe and two flange connecting pipes, the cotton conveying channel is formed inside the cotton conveying pipe, and the two flange connecting pipes are respectively connected to the two ends of the cotton conveying pipe; the cotton conveying pipe includes a pipe barrel body, an observation window and a ring pressure plate, the cotton conveying channel is formed inside the pipe barrel body, and the sampling port is opened on a side wall of the pipe barrel body, and an observation port is also opened on the side wall of the pipe barrel body, the ring pressure plate can be detachably connected to the observation port, and the ring pressure plate presses the observation window to the observation port.

3. The online detection system for seed cotton quality in the processing link according to claim 2 is characterized in that: The cotton conveying pipeline also includes a door panel and an outer cover shell, the outer cover shell is installed on one side of the door panel, and the door panel and the sampling port are located on the same side wall of the pipeline barrel body, one side of the door panel is hinged to the side wall of the pipeline barrel body, and the other side of the door panel is detachably connected to the outer wall of the pipeline barrel body, and an installation cavity is formed between the outer cover shell and the door panel, the detection component and the control module are both installed in the installation cavity, a detection port is opened on the door panel, and the detection component is installed at the detection port.

4. The online detection system for seed cotton quality in the processing link according to claim 3 is characterized in that: The sampling cotton pressing component includes a mounting frame, a driving element, a flip sampling pressing plate and a connecting shaft. The mounting frame is mounted on the outer wall of the cotton conveying component at a position corresponding to the sampling port, and the door panel is mounted on the mounting frame. The driving element is mounted on one side of the mounting frame. The first end of the connecting shaft is connected to the output shaft of the driving element. The second end of the connecting shaft passes through the first side wall of the mounting frame and is rotatably connected to the second side wall of the mounting frame. The first side wall of the mounting frame and the second side wall of the mounting frame are arranged opposite to each other. The connecting shaft is connected to the axis of the cotton conveying channel. Vertically, one end of the flip sampling platen is installed on the connecting shaft, and the driving element can drive the connecting shaft to rotate, and rotate the flip sampling platen to a cotton conveying state, a cotton collecting state, or a cotton pressing state. In the cotton conveying state, the flip sampling platen does not block the cotton conveying channel and is arranged away from the detection component. In the cotton collecting state, the flip sampling platen blocks the cotton conveying channel and concentrates the seed cotton on one side of the flip sampling platen. In the cotton pressing state, the flip sampling platen does not block the cotton conveying channel and presses the concentrated seed cotton sample onto the detection component.

5. The online detection system for seed cotton quality in the processing link according to claim 4 is characterized in that: The mounting frame includes a bottom frame and a sampling frame, the bottom frame is mounted on the outer periphery of the sampling port, the sampling frame is mounted on a side of the bottom frame away from the cotton feeding component, and the door panel is connected to a side of the sampling frame away from the bottom frame; the driving element is a servo motor, the servo motor is mounted on one side of the sampling frame through a motor seat, the connecting shaft can pass through the sampling frame, and the output shaft of the servo motor is equipped with a reducer, the reducer is connected to the first end of the connecting shaft through a coupling, the second end of the connecting shaft is equipped with a deep groove ball bearing and a bearing seat, and the bearing seat is mounted on the sampling frame.

6. The online detection system for seed cotton quality in the processing link according to claim 4 is characterized in that: The flip sampling pressing plate is arc-shaped at one end away from the connecting shaft, and a plurality of long grooves arranged side by side are formed on the flip sampling pressing plate, and the length direction of the long grooves is perpendicular to the axial direction of the shaft.

7. The online detection system for seed cotton quality in the processing link according to claim 3 is characterized in that: The detection component includes an information collection component and a quality detection component, both of which are electrically connected to the control module, and the information collection component is used to collect information about the seed cotton samples collected by the sampling and pressing cotton component, and the quality detection component is used to perform online detection on the information collected by the information collection component, and the information collected by the information collection component and the quality detection component can be transmitted to the control module.

8. The online detection system for seed cotton quality in the processing link according to claim 7 is characterized in that: The information acquisition component includes an electrode plate, a detection window, a light source, a camera sliding plate, a camera lifting plate, an industrial camera, a camera box and a pressure sensor. One side of the camera box is open, and the detection window is installed at the opening of the camera box. The camera box is installed on the door panel and the detection window is located at the detection port. The camera sliding plate can be installed at different positions of the inner wall of the camera box. The camera lifting plate is installed on the side of the camera sliding plate away from the inner wall of the camera box. The industrial camera is installed on the side of the camera lifting plate away from the camera sliding plate. The camera lens of the industrial camera is arranged toward the detection window, the light source is installed in the camera box through a light source fixing plate, and the installation position of the light source fixing plate in the camera box can be adjusted, the light source is arranged close to the observation window, the electrode plate is installed on the door panel, and the electrode plate is installed close to the detection window, the pressure sensor is installed on the electrode plate, and the surface of the pressure sensor protrudes from the electrode plate, and when the sampling cotton pressing component presses the collected seed cotton sample on one side of the detection window, the pressure sensor can detect the pressure and transmit it to the control module.

9. The online detection system for seed cotton quality in the processing link according to claim 8, characterized in that: The control module includes an industrial computer, a control box and a touch screen. The industrial computer and the control box are both installed on the side of the door panel away from the cotton conveying pipeline. The touch screen is installed on the outer wall of the outer cover shell. The touch screen and the industrial computer are both electrically connected to the control box. The quality detection component is installed on the industrial computer. The information detected by the quality detection component can be transmitted to the control box, and the control box controls the touch screen to display the detection information.

10. An application method of the online detection system for seed cotton quality in the processing link according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Turn on the power of the online detection system for seed cotton quality in the processing link, check the status of the online detection system for seed cotton quality in the processing link, and make the servo motor of the sampling cotton pressing component at the zero position, the flip sampling pressing plate of the sampling cotton pressing component is in a vertical state, and the free end of the flip sampling pressing plate is upward; S2. Start the online cotton quality detection software corresponding to the detection component, wait for successful communication, the servo motor is located at the origin, and the flip sampling plate is rotated 15° counterclockwise. At this time, the cotton conveying pipeline is in the cotton conveying state, waiting for sampling to start. At the same time, the cotton is conveyed from bottom to top in the cotton conveying channel; S3. Start sampling, control the flip sampling plate to rotate counterclockwise to 110° through the servo motor, and start collecting cotton when it reaches the cotton collecting point. At this time, the flip sampling plate is in the cotton collecting state and grabs the seed cotton. Meanwhile, monitor the torque of the servo motor. When the torque reaches the set value first, the flip sampling plate stops collecting cotton and continues to rotate counterclockwise to the cotton pressing point until the flip sampling plate is in the cotton pressing state. If the torque does not reach the set value after 3s, the flip sampling plate also stops collecting cotton and continues to rotate counterclockwise to the cotton pressing point until the flip sampling plate is in the cotton pressing state. S4. After the flip sampling plate reaches the cotton pressing point, it starts to press cotton. When the pressure detected by the pressure sensor in the detection component reaches the set value, the cotton sample is tested by the quality detection component in the detection component; if the pressure detected by the pressure sensor does not reach the pressure setting value, the flip sampling plate is rotated to a vertical state, and when the free end of the flip sampling plate is downward, the cotton sample is also tested by the quality detection component; S5. After the test is completed, the servo motor controls the flip sampling plate to rotate clockwise back to the original position, releases the seed cotton sample, and waits for the next sampling process.

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