Cotton viscosity detection device

Abstract

The invention relates to the field of cotton quality detection, and discloses a cotton viscosity detection device which comprises a shell, a detection unit and an auxiliary unit, the detection unit comprises detection rollers arranged in pairs, a detection light beam emitting element and a detection light beam receiving element, and the auxiliary unit can heat the detection rollers. During detection, the auxiliary unit is used for heating the detection rollers, a detected cotton sample is placed between the paired detection rollers, the detection rollers apply pressure to the detected cotton sample and drive the detected cotton sample to move, the viscous points adhere cotton fibers to the detection rollers, and the detection rollers drive the viscous points and the cotton fibers to continue to move. When the cotton fiber passes through the detection light beam emitting element, the detection light beam emitted by the detection light beam emitting element is shielded, the light intensity of the detection light beam is influenced, and the light intensity of the light beam received by the detection light beam receiving element is changed. Compared with a detection device in the prior art, the device is simple in structure and convenient to operate, and the detection efficiency and the detection accuracy are improved.

Description

Technical Field

[0001] This invention relates to the field of cotton quality testing technology, and in particular to a cotton stickiness testing device. Background Technology

[0002] Cotton, as a core raw material in the textile industry, occupies a pivotal position. Cotton quality significantly impacts processing, and the hazards of cotton stickiness possess a dual characteristic of being "easily overlooked yet difficult to resolve," affecting the entire processing chain. For cotton fibers, high-viscosity cotton requires multiple intensive cleaning processes; excessive cleaning can easily cause long, thin fibers to break into short fibers, significantly reducing spinnability and directly affecting subsequent spinning strength and evenness. Furthermore, high-viscosity cotton fibers have a stronger adsorption capacity for impurities, easily trapping dust, cotton husks, and other foreign objects. These impurities, once embedded in the fiber bundles, are difficult to remove effectively by the carding machine's cover plate and cylinder. The combination of sticky fibers and impurities can also coalesce into defects such as knots during subsequent processing, severely impacting the quality of yarn and end products. Sticky cotton poses a significant threat to processing equipment, easily entangled and clogging critical components such as the carding machine rollers, cylinder, and doffer, posing a great risk to processors. Entanglement in components increases diameter and alters spacing, affecting fiber holding and carding effects. Cotton lint accumulation also exacerbates component friction and load, accelerating wear, shortening lifespan, and increasing replacement costs. In addition, the strong adhesion of sticky cotton requires regular manual cleaning, which leads to frequent downtime for enterprises, wasting labor time. After restarting, parameters need to be readjusted, significantly reducing processing efficiency.

[0003] Given the dual characteristics of cotton stickiness—"easily overlooked yet difficult to resolve"—and its harmful effects throughout the entire processing chain—damaging cotton fiber quality, exacerbating equipment wear and tear, and reducing production efficiency—cotton stickiness testing has become a core pre-emptive safeguard for the upstream textile industry. From a fiber quality perspective, testing can accurately define the cotton stickiness level, allowing for the matching of appropriate cleaning process parameters. This avoids fiber breakage and reduced spinnability due to blindly intensifying cleaning, while also preventing impurities and neps from forming due to unidentified stickiness, ensuring stable quality of subsequent yarns and end products from the source. From an equipment protection perspective, pre-emptive testing can screen for high-stickiness cotton batches in advance. By adjusting equipment parameters or adding protective devices, it can reduce entanglement and blockage of components such as carding machine rollers and cylinders, reducing equipment wear, failure frequency, and safety risks, extending equipment life, and lowering additional costs.

[0004] In the current technology, there is a shortage of dedicated equipment for cotton stickiness testing, and existing imported equipment generally has problems such as complex structure, strict testing environment requirements, and high use and maintenance costs. As a result, cotton stickiness testing is still mainly done manually, which is not only inefficient, but also easily affected by human operation differences, making it difficult to guarantee accuracy and consistency. Summary of the Invention

[0005] The purpose of this invention is to provide a cotton stickiness detection device to solve the problems existing in the above-mentioned related technologies, simplify the structure of the cotton stickiness detection device, and improve the efficiency and accuracy of cotton stickiness detection.

[0006] To achieve the above objectives, the present invention provides the following solution: This invention provides a cotton stickiness detection device, comprising: case; The detection unit includes a pair of detection rollers, a detection beam emitting element, and a detection beam receiving element. The detection rollers are rotatably disposed within the housing, and the two detection rollers rotate in opposite directions. The two detection rollers can contact the cotton sample being tested and drive the cotton sample to move. The detection beam emitting element and the detection beam receiving element are both connected to the housing and are located at opposite ends of the axial direction of the detection rollers. The detection beam emitting element can emit a detection beam, and the detection beam receiving element can convert the intensity change of the detection beam into an electrical signal. An auxiliary unit is provided, which can heat the detection roller. The stickiness of the cotton sample being tested causes the cotton fibers to adhere to the detection roller. The cotton fibers adhering to the detection roller block the detection beam emitted by the detection beam emitting element, thereby realizing the detection of cotton stickiness.

[0007] Preferably, in each pair of detection rollers, one of the detection rollers is rotatably connected to a shaft end mounting plate, the shaft end mounting plate is connected to the housing, and the shaft end mounting plate is also connected to a pressure regulating component, which can apply pressure to the shaft end mounting plate to adjust the contact pressure of the two detection rollers.

[0008] Preferably, the housing has a mounting hole adapted to the shaft end mounting plate, the shaft end mounting plate extends into the mounting hole, the mounting hole is a rectangular hole, and the pressure regulating component is located on the side of the shaft end mounting plate away from the other detection roller; The pressure regulating assembly includes a force-applying block, an elastic element, and a pressure sensor. The force-applying block is slidably connected to the housing, and the sliding direction of the force-applying block is parallel to the plane containing the axes of the two detection rollers. The force-applying block is connected to one end of the pressure sensor via the elastic element, and the other end of the pressure sensor is connected to the shaft end mounting plate.

[0009] Preferably, the pressure regulating assembly further includes a guide pin, a fixing block, and an operating rod. The force-applying block has a guide hole adapted to the guide pin. The guide hole is an elongated hole, and the length direction of the guide hole is parallel to the sliding direction of the force-applying block. The guide pin passes through the guide hole and is connected to the housing. The fixing block is connected to the housing. The operating rod is threadedly connected to the fixing block, and the operating rod passes through the fixing block and is connected to the force-applying block. The operating rod is located on the side of the force-applying block away from the shaft end mounting plate.

[0010] Preferably, the auxiliary unit further includes a negative pressure mechanism, which can be connected to a vacuum pumping device. The negative pressure mechanism has a suction port, which is elongated and located directly below the line connecting the detection beam emitting element and the detection beam receiving element.

[0011] Preferably, the auxiliary unit further includes an auxiliary support frame and a transmitting base. The auxiliary support frame is connected to the housing, and the transmitting base is connected to the auxiliary support frame, and the connection position between the two can be adjusted. The detection beam emitting element is disposed on the transmitting base. The suction port is located on the auxiliary support frame. The negative pressure mechanism also includes guide vanes. There are two sets of guide vanes. The guide vanes are located on both sides of the suction port and connected to the auxiliary support frame. The two guide vanes form a guide channel. The cross-sectional area of ​​the guide channel gradually increases from the suction port toward the detection roller.

[0012] Preferably, the cross-sectional shape of the guide vane is triangular, and the guide vane is detachably connected to the auxiliary support frame.

[0013] Preferably, the auxiliary unit includes an auxiliary roller rotatably connected to the housing, with the axis of the auxiliary roller parallel to the axis of the detection roller. The auxiliary roller includes a roller body and an auxiliary brush, the auxiliary brush being sleeved on the outside of the roller body. The outer circumferential surface of the auxiliary brush has bristles that can contact the detection roller. The auxiliary roller rotates with the detection roller, and the friction between the bristles and the detection roller can heat up the detection roller. Along the direction of movement of the detection roller, the auxiliary roller is located behind the negative pressure mechanism.

[0014] Preferably, the auxiliary unit further includes a temperature detection element, which is capable of monitoring the temperature of the detection roller; the number of temperature detection elements is multiple sets, and the temperature detection elements are arranged along the axial direction of the detection roller.

[0015] Preferably, the auxiliary unit further includes a scraper, which is located between the auxiliary roller and the negative pressure mechanism, and the scraper can contact the detection roller to scrape off the cotton fibers adhering to the detection roller; An impurity baffle is provided between the scraper and the auxiliary roller; a waste cotton collection element is also provided inside the housing, and the waste cotton collection element is located below the two detection rollers.

[0016] The present invention achieves the following technical advantages over related technologies: The cotton stickiness detection device of the present invention includes a housing, a detection unit, and an auxiliary unit. The detection unit includes a pair of detection rollers, a detection beam emitting element, and a detection beam receiving element. The detection rollers are rotatably disposed within the housing, and the two detection rollers rotate in opposite directions. The two detection rollers can contact the cotton sample to be detected and drive the cotton sample to move. The detection beam emitting element and the detection beam receiving element are both connected to the housing and are located at the two ends of the axial direction of the detection rollers, respectively. The detection beam emitting element can emit a detection beam, and the detection beam receiving element can convert the light intensity change of the detection beam into an electrical signal. The auxiliary unit can heat the detection rollers. The stickiness points of the cotton sample to be detected cause the cotton fibers to adhere to the detection rollers. The cotton fibers adhering to the detection rollers block the detection beam emitted by the detection beam emitting element, thereby realizing the detection of cotton stickiness.

[0017] In this invention, the cotton stickiness detection device heats the detection rollers using an auxiliary unit during detection. The cotton sample is formed into a cotton web and placed between a pair of detection rollers. The detection rollers apply pressure to the cotton sample and move it. When the cotton sample contacts the heated detection rollers, sticky points adhere the cotton fibers to the sides of the rollers. The detection rollers continue to move the sticky points and cotton fibers. When the cotton fibers pass through the detection beam emitting element, they block the detection beam emitted by the element, affecting its intensity. The intensity of the received beam changes, and the receiving element converts this change into an electrical signal, facilitating counting and detection by the operator, thus achieving the purpose of cotton stickiness detection. Compared with existing detection devices, the cotton stickiness detection device of the present invention has a simple structure and is easy to operate. It uses an auxiliary unit to heat the detection roller, and the detection beam emitting element and the detection beam receiving element are arranged along the axial direction of the detection roller. The cotton stickiness is detected while the detection roller moves the cotton sample being tested, and the detection information is output, which improves the detection efficiency and accuracy. The housing provides stable support for the detection unit and the auxiliary unit, ensuring the smooth progress of the detection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an isometric schematic diagram of the cotton stickiness detection device disclosed in this embodiment; Figure 2 This is an isometric view of the cotton stickiness detection device disclosed in this embodiment from other angles; Figure 3 This is a cross-sectional structural diagram of the cotton stickiness detection device disclosed in this embodiment; Figure 4 This is a partial structural schematic diagram of the cotton stickiness detection device disclosed in this embodiment; Figure 5 This is a schematic diagram of the cotton stickiness detection device disclosed in this embodiment.

[0020] In the diagram: 1. Housing; 2. Detection roller; 3. Detection beam emitting element; 4. Detection beam receiving element; 5. Shaft end mounting plate; 6. Pressure regulating assembly; 601. Force application block; 602. Elastic element; 603. Pressure sensor; 604. Guide pin; 605. Fixing block; 606. Operating lever; 7. Negative pressure mechanism; 701. Suction port; 702. Guide vane; 8. Auxiliary support frame; 9. Emitting base; 10. Auxiliary roller; 11. Auxiliary brush; 1101. Brush bristles; 12. Temperature detection element; 13. Scraper; 14. Impurity baffle; 15. Waste cotton collection element. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to provide a cotton stickiness detection device to solve the problems existing in the above-mentioned related technologies, simplify the structure of the cotton stickiness detection device, and improve the efficiency and accuracy of cotton stickiness detection.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1 This embodiment provides a cotton stickiness detection device. Please refer to [link / reference]. Figures 1-5 The system includes a housing 1, a detection unit, and an auxiliary unit. The detection unit includes a pair of detection rollers 2, a detection beam emitting element 3, and a detection beam receiving element 4. The detection rollers 2 are rotatably disposed inside the housing 1, and the two detection rollers 2 rotate in opposite directions. The two detection rollers 2 can contact the cotton sample being tested and drive the cotton sample to move. The detection beam emitting element 3 and the detection beam receiving element 4 are both connected to the housing 1 and are located at opposite ends of the axial direction of the detection rollers 2. The detection beam emitting element 3 can emit a detection beam, and the detection beam receiving element 4 can convert the light intensity change of the detection beam into an electrical signal. The auxiliary unit can heat the detection rollers 2. The stickiness of the cotton sample being tested causes the cotton fibers to adhere to the detection rollers 2. The cotton fibers adhering to the detection rollers 2 block the detection beam emitted by the detection beam emitting element 3, thereby realizing the detection of cotton stickiness.

[0025] In the cotton stickiness detection device of the present invention, during detection, the detection roller 2 is heated by an auxiliary unit, and the cotton sample is made into a cotton web-like sample to be tested. The sample to be tested is placed between a pair of detection rollers 2. The detection roller 2 applies pressure to the sample and moves it. When the sample comes into contact with the heated detection roller 2, the sticky points adhere the cotton fibers to the side of the detection roller 2. The detection roller 2 continues to move the sticky points and cotton fibers. When the cotton fibers pass through the detection beam emitting element 3, they block the detection beam emitted by the detection beam emitting element 3, affecting the light intensity of the detection beam. The light intensity of the light beam received by the detection beam receiving element 4 changes. The detection beam receiving element 4 converts the light intensity change of the detection beam into an electrical signal, which facilitates counting and detection by the testing personnel, thereby achieving the purpose of cotton stickiness detection. Compared with existing detection devices, the cotton stickiness detection device of the present invention has a simple structure and is easy to operate. It uses an auxiliary unit to heat the detection roller 2. The detection beam emitting element 3 and the detection beam receiving element 4 are arranged along the axial direction of the detection roller 2. The cotton stickiness is detected while the detection roller 2 drives the cotton sample to move, and the detection information is output, which improves the detection efficiency and accuracy. The housing 1 provides stable support for the detection unit and the auxiliary unit to ensure the smooth progress of the detection.

[0026] In this specific embodiment, the detection beam emitting element 3 is a visible red laser generator, and the detection beam receiving element 4 is a high-response photodiode. Utilizing the diffuse reflection effect of light, the intensity change of the reflected light is detected to determine whether cotton fibers adhere to the detection roller 2. The visible red laser generator emits a visible beam, and the high-response photodiode improves detection speed and anti-interference capability, enhancing the linear detection efficiency and accuracy of cotton. The detection beam emitted by the visible red laser generator is parallel to the axis of the detection roller 2, and the distance between the detection beam and the outer circumferential surface of the detection roller 2 is 1mm ± 0.1mm. The visible red laser generator and the high-response photodiode are aligned, with a coaxiality error not exceeding 0.01mm to ensure the detection accuracy of the device. In practical applications, the operating parameters can be adjusted according to actual working conditions to meet different detection requirements. It should also be noted that during actual assembly, the surface of the detection beam receiving element 4 can be set to slightly protrude from or be flush with the assembly surface to prevent interference caused by incomplete alignment of the detection beam and ensure the reliability of the detection unit.

[0027] In practical applications, other types of detection beam emitting elements 3 and detection beam receiving elements 4 can be selected according to the actual detection conditions to meet different detection needs and improve the flexibility and adaptability of the detection device. It should also be noted that, in practical applications, the detection unit of this invention can also be equipped with a photoelectric diffuse reflection switch to control the working state of the detection unit. The photoelectric diffuse reflection switch can be installed on the housing 1 for convenient operation by the detection personnel.

[0028] It should also be noted that the detection roller 2 is connected to a driver, and the output end of the driver is connected to the detection roller 2 to drive its rotation. For example, a motor can be used as the driver. Appropriate selection of the specific type of driver is a common practice among those skilled in the art and will not be elaborated here. In practical applications, the number of detection rollers 2 can be set to multiple pairs to meet different detection needs and further improve detection efficiency. Simultaneously, the surface roughness of the outer circumference of the paired detection rollers 2 should be appropriately set to avoid excessively high surface smoothness, which can easily damage the surface and cause snagging, and excessively low smoothness, which can directly cause cotton snagging. Appropriately setting the surface roughness of the detection rollers 2 is a common practice among those skilled in the art and will not be elaborated here.

[0029] In each pair of detection rollers 2, one detection roller 2 is rotatably connected to a shaft end mounting plate 5, which is connected to the housing 1. The shaft end mounting plate 5 is also connected to a pressure regulating component 6, which applies pressure to the shaft end mounting plate 5 to adjust the contact pressure between the two detection rollers 2. By applying a force to one of the pair of detection rollers 2 using the pressure regulating component 6, the magnitude of the force can be adjusted to regulate the contact pressure between the two detection rollers 2, thereby meeting various detection requirements, improving the flexibility and adaptability of the detection device, and facilitating the adjustment of the contact pressure using the pressure regulating component 6, which is convenient and helps improve the detection efficiency of the device.

[0030] In this specific embodiment, the housing 1 has a mounting hole adapted to the shaft end mounting plate 5. The shaft end mounting plate 5 extends into the mounting hole, which is a rectangular hole. The pressure regulating component 6 is located on the side of the shaft end mounting plate 5 away from the other detection roller 2. One of the paired detection rollers 2 is connected to the pressure regulating component 6. The detection roller 2 connected to the pressure regulating component 6 is connected to the housing 1 via the shaft end mounting plate 5. The pressure regulating component 6 applies a force to the shaft end mounting plate 5 to achieve the purpose of applying force to the detection roller 2.

[0031] The pressure regulating assembly 6 includes a force-applying block 601, an elastic element 602, and a pressure sensor 603. The force-applying block 601 is slidably connected to the housing 1, and the sliding direction of the force-applying block 601 is parallel to the plane containing the axes of the two detection rollers 2. The force-applying block 601 is connected to one end of the pressure sensor 603 via the elastic element 602, and the other end of the pressure sensor 603 is connected to the shaft end mounting plate 5. The force-applying block 601 applies a force to the shaft end mounting plate 5 using the elastic element 602, improving the smoothness of the force application, preventing the shaft end mounting plate 5 from loosening, and ensuring the structural stability of the shaft end mounting plate 5 and the detection rollers 2. At the same time, the pressure sensor 603 monitors the magnitude of the applied force, improving the working accuracy of the pressure regulating assembly 6. In this specific embodiment, the elastic element 602 is a spring, and the force application block 601 and the pressure sensor 603 all have positioning holes that are compatible with the elastic element 602, ensuring the structural and operational stability of the elastic element 602. In this specific embodiment, there are two sets of elastic elements 602, which are arranged in parallel to ensure reliable transmission of force and further improve the structural stability and operational reliability of the pressure regulating assembly 6. The range of the pressure sensor 603 is 0N~1000N, which can be adjusted according to the actual working conditions.

[0032] To improve the operational reliability of the pressure regulating assembly 6, the pressure regulating assembly 6 also includes a guide pin 604, a fixing block 605, and an operating lever 606. The force-applying block 601 has a guide hole adapted to the guide pin 604. The guide hole is an elongated hole, and its length direction is parallel to the sliding direction of the force-applying block 601. The guide pin 604 passes through the guide hole and is connected to the housing 1. The cooperation between the guide pin 604 and the guide hole improves the reciprocating motion accuracy of the force-applying block 601, thereby improving the pressure regulation accuracy of the pressure regulating assembly 6 and ensuring the operational reliability of the detection unit. The fixing block 605 is connected to the housing 1, and the operating lever 606 is threadedly connected to the fixing block 605. The operating lever 606 passes through the fixing block 605 and is connected to the force-applying block 601. The operating lever 606 is located on the side of the force-applying block 601 away from the shaft end mounting plate 5. The operating lever 606 improves the ease of operation of the pressure regulating assembly 6. Rotating the operating lever 606 can drive the force-applying block 601 to slide back and forth, adjusting the contact pressure between the detection rollers 2. In this specific embodiment, rotating the operating lever 606 clockwise moves it along the fixed block 605 toward the detection roller 2, compressing the elastic element 602 and increasing the pressure between the paired detection rollers 2. Rotating the operating lever 606 counterclockwise decreases the pressure between the detection rollers 2. The fixed block 605 has an L-shaped structure, which supports the operating lever 606 and also provides a certain limiting function, improving the working safety factor of the pressure regulating assembly 6.

[0033] It should also be noted that, in the paired detection rollers 2, both ends of the detection roller 2 connected to the pressure adjustment component 6 are connected to the pressure adjustment component 6, so as to improve the uniformity of force on the detection roller 2, improve the pressure adjustment accuracy of the detection roller 2, and thus ensure the detection accuracy of the device.

[0034] Specifically, the auxiliary unit also includes a negative pressure mechanism 7, which can be connected to a vacuum pump. The negative pressure mechanism 7 has a suction port 701, which can be elongated and located directly below the line connecting the detection beam emitting element 3 and the detection beam receiving element 4. When the detection roller 2 and the cotton fibers adhering to the detection roller 2 move to the detection beam emitting element 3 and the detection beam receiving element 4, the vacuum pump uses the suction port 701 of the negative pressure mechanism 7 to suck up the air near the cotton fibers. This causes the cotton fibers adhering to the detection roller 2 to move away from the detection roller 2 under negative pressure, allowing the cotton fibers to spread out and ensure that they can block the detection beam, thus ensuring smooth detection. In practical applications, the suction port 701 can also be constructed by arranging multiple suction holes along the axial direction of the detection roller 2, similarly creating an elongated suction port 701. In this specific embodiment, the distance between the suction port 701 of the negative pressure mechanism 7 and the detection roller 2 is approximately 5mm. This ensures that a negative pressure attraction is applied to the cotton fibers adhering to the detection roller 2 while preventing the cotton fibers from detaching from the detection roller 2. It should be noted that in practical applications, properly setting the operating parameters of the vacuum equipment to ensure an appropriate negative pressure is crucial. This prevents excessive negative pressure from causing cotton fiber loss, while also preventing insufficient negative pressure from preventing the cotton fibers from spreading out into an approximately vertical position. Adjusting the operating parameters of the vacuum equipment appropriately is a common practice among those skilled in the art and will not be elaborated upon here. Furthermore, the cleanliness of the housing 1 must be ensured during testing to prevent dust and impurities from affecting the smooth operation of the device. In practical applications, a negative pressure fan with an airflow range of 150m³ can be used as the vacuum equipment. 3 / h~200m 3 / h, negative pressure value -300Pa~-500Pa, which can be adjusted according to actual working conditions.

[0035] Meanwhile, the auxiliary unit also includes an auxiliary support frame 8 and a transmitting base 9. The auxiliary support frame 8 is connected to the housing 1, and the transmitting base 9 is connected to the auxiliary support frame 8, with their connection position adjustable. The detection beam emitting element 3 is mounted on the transmitting base 9. Adjusting the relative position of the transmitting base 9 and the auxiliary support frame 8 can adjust the relative position of the detection beam emitting element 3, thereby coarsely adjusting the position of the light spot formed by the detection beam and ensuring the reliability of the detection unit. In this specific embodiment, the transmitting base 9 and the auxiliary support frame 8 are connected by bolts, and the bolt holes are elongated holes, including horizontal and vertical elongated holes, with the width of the elongated holes slightly larger than the diameter of the bolts. This allows for fine-tuning of the relative position of the transmitting base 9 and the auxiliary support frame 8 (since the adjustment amount is small, fine-tuning is sufficient to meet the adjustment requirements), and the structure is simple and the adjustment operation is convenient.

[0036] The suction port 701 is located on the auxiliary support frame 8. The negative pressure mechanism 7 also includes two sets of guide vanes 702, which are located on both sides of the suction port 701 and connected to the auxiliary support frame 8. The two guide vanes 702 form a flow channel, with the cross-sectional area of ​​the flow channel gradually increasing from the suction port 701 towards the detection roller 2. By using the guide vanes 702 to construct the flow channel, the airflow is guided, further improving the operational reliability of the negative pressure mechanism 7.

[0037] In this specific embodiment, the guide vane 702 has a triangular cross-sectional shape, with its tip facing the detection roller 2 to guide the gas flow. The guide vane 702 is detachably connected to the auxiliary support frame 8. In practical applications, the guide vane 702 can be plugged into the auxiliary support frame 8, resulting in a stable connection structure and convenient operation. To further improve the structural stability of the guide vane 702, screws can be used to fix it after the guide vane 702 is plugged into the auxiliary support frame 8, effectively preventing the guide vane 702 from moving or misaligning.

[0038] More specifically, the auxiliary unit includes an auxiliary roller 10, which is rotatably connected to the housing 1, and the axis of the auxiliary roller 10 is parallel to the axis of the detection roller 2. The auxiliary roller 10 includes a roller body and an auxiliary brush 11. The auxiliary brush 11 is sleeved on the outside of the roller body, and the outer peripheral surface of the auxiliary brush 11 has bristles 1101 that can contact the detection roller 2. The auxiliary roller 10 and the detection roller 2 rotate in opposite directions, and the friction between the bristles 1101 and the detection roller 2 can heat up the detection roller 2. Along the movement direction of the detection roller 2, the auxiliary roller 10 is located behind the negative pressure mechanism 7.

[0039] The auxiliary unit of this invention utilizes an auxiliary roller 10 to drive an auxiliary brush 11 to rotate. The bristles 1101 of the auxiliary brush 11 contact and rub against the detection roller 2, causing the temperature of the detection roller 2 to rise. In this specific embodiment, the bristles 1101 of the auxiliary brush 11 are made of a mixture of metal wire and polypropylene fiber, which increases the structural strength of the bristles 1101 while generating heat through friction with the detection roller 2. The auxiliary brush 11 of this invention is sleeved on the outside of the roller body and is detachably connected to the roller body. After the bristles 1101 wear down, the auxiliary brush 11 can be easily replaced, ensuring the reliability of the auxiliary unit and reducing the operating cost of the auxiliary unit.

[0040] It is also important to emphasize that the bristles 1101 of the auxiliary brush 11 can simultaneously clean the detection roller 2 after the detection is completed, removing cotton fibers and some smaller impurities that are adhered to the detection roller 2 and could not be removed by the scraper 13. This enhances the cleaning effect on the detection roller 2, ensures the accuracy of subsequent detections, and improves the reliability of the detection device. In addition, the auxiliary rollers 10 of the paired detection rollers 2 are symmetrically arranged to avoid affecting the normal detection operation of the detection rollers 2.

[0041] Furthermore, the auxiliary unit also includes temperature detection elements 12, which can monitor the temperature of the detection roller 2. Multiple sets of temperature detection elements 12 are arranged along the axial direction of the detection roller 2. In practical applications, the temperature of the detection roller 2 is raised to 40℃~60℃, with the axial temperature difference between the paired detection rollers 2 not exceeding 2℃ and the radial temperature difference not exceeding 1℃. In practical applications, the temperature detection elements 12 can be non-contact temperature sensors with a range of 0℃~120℃ and an accuracy of ±0.5℃. Detection can begin when the temperature of the paired detection rollers 2 reaches 40±1℃. During the entire detection process, if the temperature of the detection roller 2 is too high, the rotation speed of the auxiliary roller 10 can be reduced; if the temperature of the detection roller 2 is too low, the rotation speed of the auxiliary roller 10 can be increased. By adjusting the rotation speed of the auxiliary roller 10, the frictional heating between the auxiliary roller 10 and the detection roller 2 is controlled, so that the outer peripheral surface temperature of the detection roller 2 is always maintained at around 40℃, ensuring smooth detection. In this specific embodiment, the rotational speed of the auxiliary roller 10 is in the range of 200 r / min to 300 r / min. Furthermore, in practical applications, the rotational speed of the auxiliary roller 10 can be adjusted according to actual detection requirements, thereby adjusting the operating temperature of the detection roller 2 and improving the flexibility and adaptability of the device.

[0042] Meanwhile, the auxiliary unit also includes a scraper 13, which is located between the auxiliary roller 10 and the negative pressure mechanism 7. The scraper 13 can contact the detection roller 2 to scrape off the cotton fibers adhering to the detection roller 2. After the detection, the scraper 13 is used to scrape off the cotton fibers adhering to the detection roller 2, which prepares for subsequent detection work and improves the detection efficiency of the device.

[0043] To prevent the scraped cotton fibers from continuing to move with the detection roller 2, an impurity baffle 14 is installed between the scraper 13 and the auxiliary roller 10. After the detected cotton sticky points are scraped off, they impact the impurity baffle 14 and fall up and down, blocking the scraped cotton fibers and other impurities, thus preventing them from affecting subsequent detection. A waste cotton collection element 15 is also installed inside the housing 1, located below the two detection rollers 2. The waste cotton collection element 15 collects the cotton fibers scraped off by the scraper 13 for centralized processing. In practical applications, a vacuum pump can be connected to the waste cotton collection element 15, allowing the scraped cotton sticky points to enter the waste cotton collection element 15 under negative pressure, improving waste cotton collection efficiency. In practical applications, the vacuum pump can be connected to the waste cotton collection element 15 via a pipe, such as a PVC pipe. To ensure the normal operation of the vacuum pump, a filter screen can be installed between the vacuum pump and the waste cotton collection element 15 to prevent damage to the vacuum pump and extend the service life of the device.

[0044] Example 2 This embodiment provides a cotton stickiness detection device. When using this device to detect cotton stickiness, the specific steps include: Device startup: Negative pressure mechanism 7 and detection roller 2 open; Preparation stage: The negative pressure mechanism 7 and the detection roller 2 operate stably, causing the detection roller 2 and the auxiliary brush 11 to rotate relative to each other and rub against each other, and the surface temperature of the detection roller 2 rises; Detection stage: The cotton sample to be tested is placed between the pairs of detection rollers 2. The detection begins. The pairs of detection rollers 2 apply pressure and temperature to the cotton sample to be tested. The sticky cotton fibers adhere to the detection rollers 2 and block the laser emitted by the visible red laser generator, causing the photocurrent of the high-response photodiode to change. At this time, the counting of sticky points begins. Cleaning phase: After the detection phase is completed, the auxiliary brush 11 will clean the sticky fibers and some small impurities adhering to the detection rollers and recycle them. At the same time, the cotton sample that has been tested will also be recycled. End of detection: The detection ends after the total count is completed.

[0045] In practical applications, diffuse reflection sensors can be installed below the pairs of detection rollers 2. The diffuse reflection sensors can be used to monitor whether a single detection is completed. Once the diffuse reflection sensors can no longer receive a signal indicating the presence of an object, the detection can be completed, thereby further improving detection efficiency, reducing the labor intensity of detection personnel, and improving the adaptability of the detection device.

[0046] The other structures of the cotton stickiness detection device in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0047] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A cotton stickiness detection device, characterized in that, include: case; The detection unit includes a pair of detection rollers, a detection beam emitting element, and a detection beam receiving element. The detection rollers are rotatably disposed within the housing, and the two detection rollers rotate in opposite directions. The two detection rollers can contact the cotton sample being tested and drive the cotton sample to move. The detection beam emitting element and the detection beam receiving element are both connected to the housing and are located at opposite ends of the axial direction of the detection rollers. The detection beam emitting element can emit a detection beam, and the detection beam receiving element can convert the intensity change of the detection beam into an electrical signal. An auxiliary unit is provided, which can heat the detection roller. The stickiness of the cotton sample being tested causes the cotton fibers to adhere to the detection roller. The cotton fibers adhering to the detection roller block the detection beam emitted by the detection beam emitting element, thereby realizing the detection of cotton stickiness.

2. The cotton stickiness detection device according to claim 1, characterized in that: In each pair of detection rollers, one of the detection rollers is rotatably connected to a shaft end mounting plate, which is connected to the housing. The shaft end mounting plate is also connected to a pressure regulating assembly, which can apply pressure to the shaft end mounting plate to adjust the contact pressure between the two detection rollers.

3. The cotton stickiness detection device according to claim 2, characterized in that: The housing has a mounting hole that is adapted to the shaft end mounting plate, the shaft end mounting plate extends into the mounting hole, the mounting hole is a rectangular hole, and the pressure regulating component is located on the side of the shaft end mounting plate away from the other detection roller; The pressure regulating assembly includes a force-applying block, an elastic element, and a pressure sensor. The force-applying block is slidably connected to the housing, and the sliding direction of the force-applying block is parallel to the plane containing the axes of the two detection rollers. The force-applying block is connected to one end of the pressure sensor via the elastic element, and the other end of the pressure sensor is connected to the shaft end mounting plate.

4. The cotton stickiness detection device according to claim 3, characterized in that: The pressure regulating assembly further includes a guide pin, a fixing block, and an operating rod. The force-applying block has a guide hole adapted to the guide pin. The guide hole is an elongated hole, and its length direction is parallel to the sliding direction of the force-applying block. The guide pin passes through the guide hole and is connected to the housing. The fixing block is connected to the housing. The operating rod is threaded to the fixing block, and passes through the fixing block and is connected to the force-applying block. The operating rod is located on the side of the force-applying block away from the shaft end mounting plate.

5. The cotton stickiness detection device according to claim 1, characterized in that: The auxiliary unit also includes a negative pressure mechanism that can be connected to a vacuum pump. The negative pressure mechanism has a suction port that is elongated and located directly below the line connecting the detection beam emitting element and the detection beam receiving element.

6. The cotton stickiness detection device according to claim 5, characterized in that: The auxiliary unit also includes an auxiliary support frame and a transmitting base. The auxiliary support frame is connected to the housing, and the transmitting base is connected to the auxiliary support frame, and the connection position between the two can be adjusted. The detection beam emitting element is disposed on the transmitting base. The suction port is located on the auxiliary support frame. The negative pressure mechanism also includes guide vanes. There are two sets of guide vanes. The guide vanes are located on both sides of the suction port and connected to the auxiliary support frame. The two guide vanes form a guide channel. The cross-sectional area of ​​the guide channel gradually increases from the suction port toward the detection roller.

7. The cotton stickiness detection device according to claim 6, characterized in that: The cross-sectional shape of the guide vane is triangular, and the guide vane is detachably connected to the auxiliary support frame.

8. The cotton stickiness detection device according to claim 5, characterized in that: The auxiliary unit includes an auxiliary roller, which is rotatably connected to the housing, and the axis of the auxiliary roller is parallel to the axis of the detection roller. The auxiliary roller includes a roller body and an auxiliary brush, which is sleeved on the outside of the roller body. The outer circumferential surface of the auxiliary brush has bristles that can contact the detection roller. The auxiliary roller rotates with the detection roller, and the friction between the bristles and the detection roller can heat up the detection roller. Along the direction of movement of the detection roller, the auxiliary roller is located behind the negative pressure mechanism.

9. The cotton stickiness detection device according to claim 8, characterized in that: The auxiliary unit also includes a temperature detection element, which can monitor the temperature of the detection roller; the number of temperature detection elements is multiple, and the temperature detection elements are arranged along the axial direction of the detection roller.

10. The cotton stickiness detection device according to claim 8, characterized in that: The auxiliary unit also includes a scraper, which is located between the auxiliary roller and the negative pressure mechanism. The scraper can contact the detection roller to scrape off the cotton fibers adhering to the detection roller. An impurity baffle is provided between the scraper and the auxiliary roller; a waste cotton collection element is also provided inside the housing, and the waste cotton collection element is located below the two detection rollers.

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