Integrated cotton quality index detection device

Abstract

The present invention relates to an integrated cotton quality index detection device, which is characterized in that: it includes a sample tube, which has a tube body with a uniform cross-section, one end of the tube body serves as a compression end, and the other end serves as a switching end; a first electrode plate is provided in the tube body near the compression end, the outer edge of the first electrode plate matches the cross-section of the tube body, the first electrode plate is insulated and connected to a push rod, and the push rod is extended through an end cover and connected to a push rod driving device; an electrode plate color head switching device is provided at the switching end of the tube body, and the second electrode plate and the color head are alternately connected to the switching end of the tube body under the action of the switching mechanism; the first electrode plate and the second electrode plate are connected to a regain detection circuit module; the color receiver of the color head is connected to a color detection circuit module; and a plurality of ventilation holes are provided on the first electrode plate and the second electrode plate.

Description

Technical Field

[0001] The present invention relates to the field of cotton quality detection, and in particular to an integrated cotton quality index detection device. Background Art

[0002] Cotton is an important commodity for the global people's livelihood. Key cotton quality indicators include moisture regain, micronaire value, color grade, compression elasticity, maturity, and fineness.

[0003] Moisture regain is an indicator of cotton's moisture absorption. Accurately controlling moisture regain during cotton processing is a key factor affecting cotton processing quality. The accuracy and stability of moisture regain testing at different stages of cotton processing are key factors influencing moisture regain control. Moisture regain can be measured using the electrical (resistance) method.

[0004] The micronaire value is a comprehensive indicator of the fineness and maturity of cotton fibers. It is one of the most important intrinsic quality indicators of cotton fibers and is closely related to their practical value. Micronaire values ​​are divided into three grades: A, B, and C, with grade B being the standard. Grade A has a value range of 3.7-4.2, indicating the best quality; Grade B has a value range of 3.5-3.6 and 4.3-4.9; and Grade C has a value range of 3.4 and below and 5.0 and above, indicating the worst quality. The current measurement method uses an airflow meter to measure the air permeability of a constant weight of cotton fibers compressed into a fixed volume. The value is expressed as a scale value, with larger values ​​indicating coarser and more mature cotton fibers.

[0005] Color grade refers to the type and level of cotton color. The type is determined by the yellow depth +b, and the level is determined by the reflectance Rd (%). China's national standard GB 1103.1-2012, "Cotton - Part 1: Sawtooth Finished Fine-staple Cotton," categorizes cotton into four types based on the yellow depth: white cotton, lightly soiled cotton, lightly dyed yellow cotton, and yellow-dyed cotton. Based on the lightness or darkness of the cotton, white cotton is divided into five levels, lightly soiled cotton into three levels, lightly dyed yellow into three levels, and yellow-dyed cotton into two levels, for a total of thirteen levels. Current color grade determination uses the color / trash module of the HVI high-capacity cotton fiber testing system to measure two broad wavelength regions to obtain Rd and +b values.

[0006] Compression elasticity refers to the resilience of cotton after compression. It is a new physical performance indicator that can provide important relevant information for the two physical indicators of cotton maturity and fineness.

[0007] The most advanced existing method for testing the aforementioned cotton quality indicators utilizes the internationally available HVI large-volume cotton fiber testing system. This system, comprised of multiple modules, such as a color / impurity module and a micronaire / maturity module, enables integrated cotton fiber testing with human assistance. However, each module of the HVI large-volume cotton fiber testing system is essentially a stand-alone unit with independent specimen windows. This requires multiple manual placements of specimens for each test, resulting in significant challenges such as high workload, long operation times, low efficiency, and operator fatigue leading to test errors. Summary of the Invention

[0008] The present invention aims to provide an integrated cotton quality index detection device, which can complete the detection of moisture regain, micronaire value and color grade index in one sampling.

[0009] To achieve the above object, the technical solution adopted by the present invention is: an integrated cotton quality index detection device, comprising a sample tube having a tube body of a uniform cross-section, one end of the tube body serving as a compression end and the other end serving as a switching end;

[0010] An end cap is provided on the compression end of the barrel, and a first electrode plate is provided inside the barrel near the compression end. The outer edge of the first electrode plate matches the cross-section of the barrel. The first electrode plate is insulated and connected to a push rod, and the push rod extends through the end cap and is connected to a push rod driving device.

[0011] An electrode plate color head switching device is provided at the switching end of the barrel body, the electrode plate color head switching device comprises a second electrode plate, a color head and a switching mechanism, the color head comprises a box body, one end of the box body is a detection port, a light source and a color receiver are provided in the box body; the second electrode plate and the color head are alternately docked with the switching end of the barrel body under the action of the switching mechanism; when the second electrode plate is docked with the switching end of the barrel body, the second electrode plate covers the switching end port of the barrel body; when the color head is docked with the switching end of the barrel body, the detection port of the color head covers the switching end port of the barrel body;

[0012] The first electrode plate and the second electrode plate are connected to a moisture regain detection circuit module;

[0013] The color receiver of the color head is connected to a color detection circuit module;

[0014] A plurality of ventilation holes are provided on each of the first electrode plate and the second electrode plate; when the second electrode plate is docked with the switching end of the barrel body, the space between the first electrode plate and the second electrode plate is communicated with the outside world through the ventilation holes on one of the first electrode plate and the second electrode plate, and at the same time is connected to a micronaire detection module through the ventilation holes on the other of the first electrode plate and the second electrode plate.

[0015] In the above solution, a pressure sensor is connected in series between the first electrode plate and the push rod or on the push rod, and the output of the pressure sensor is connected to a compression elasticity detection circuit module.

[0016] In the above scheme, the ventilation hole of the second electrode plate is connected to the outside world, and the space between the first electrode plate and the end cover serves as a ventilation cavity. The micronaire detection module includes an air pump, an air pressure sensor and a micronaire detection circuit. The ventilation cavity is connected to the air pump through the air inlet hole and is connected to the air pressure sensor through the detection hole.

[0017] In the above solution, the switching mechanism includes a guide rail parallel to the end face of the switching end of the barrel, and the second electrode plate and the color head are arranged side by side and installed on the guide rail and can move horizontally along the guide rail.

[0018] Furthermore, a porcelain plate is provided on the side of the switching end of the barrel body; and the color head can be alternately connected to the switching end port of the barrel body and the porcelain plate by moving the color head.

[0019] Furthermore, the second electrode plate and the color head are fixed to each other and are synchronously driven by a translation driving mechanism.

[0020] Furthermore, the second electrode plate and the color head have a first working state, a second working state and a third working state; in the first working state, the second electrode plate and the color head are staggered with the switching end of the barrel body so that the switching end of the barrel body is open; in the second working state, the second electrode plate is docked with the switching end of the barrel body, and in the third working state, the color head is docked with the switching end of the barrel body.

[0021] In the above solution, the push rod driving device is a motor.

[0022] The present invention has innovatively designed a sample tube that integrates the moisture regain, micronaire value, and color grade detection of cotton. The above-mentioned multifunctional detection can be completed in one sample placement, which greatly reduces the workload of staff and improves work efficiency. It is particularly suitable for the actual situation of cotton fiber detection in my country. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a sample tube according to an embodiment of the present invention;

[0024] Figure 2 This is a structural diagram of an electrode plate color head switching device according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Schematic top view of

[0026] Figure 4 This is a schematic block diagram of a moisture regain detection circuit module according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic block diagram of a color detection circuit module according to an embodiment of the present invention;

[0028] Figure 6 Schematic diagram of a micronaire detection module according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic block diagram of a compression elasticity detection circuit module according to an embodiment of the present invention.

[0030] In the above figure: 1. Sample cylinder; 11. Cylinder body; 11a. Compression end; 11b. Switching end; 12. End cover; 13. Air inlet; 14. Detection hole; 2. First electrode plate; 21. First insulating breathable seat; 3. Push rod; 31. Spring; 4. Push rod driving device; 5. Electrode plate color head switching device; 51. Guide rail; 52. Translation driving mechanism; 6. Second electrode plate; 61. Second insulating breathable seat; 7. Color head; 71. Box; 72. Light source; 73. Color receiver; 74. Ceramic plate; 8. Pressure sensor; 9. Slide plate. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0032] Example: See Figure 1-7 As shown:

[0033] An integrated cotton quality index detection device, see Figure 1 As shown, it comprises a sample tube 1 having a tube body 11 with a uniform cross-section, one end of the tube body 11 serving as a compression end 11 a and the other end serving as a switching end 11 b.

[0034] See also Figure 1 As shown, an end cap 12 is provided on the compression end 11a of the barrel 11, and a first electrode plate 2 is provided inside the barrel 11 near the compression end 11a. The outer edge of the first electrode plate 2 matches the cross-section of the barrel 11. The first electrode plate 2 is insulated and connected to a push rod 3, and the push rod 3 extends through the end cap 12 and is connected to a push rod driving device 4. Specifically, the first electrode plate 2 is fixedly connected to a first insulating and breathable seat 21, and the other side of the first insulating and breathable seat 21 is fixedly connected to the push rod 3.

[0035] The push rod drive device 4 adopts a servo motor, an electric cylinder or a lever type push-pull motor, or even a hydraulic or pneumatic one.

[0036] See also Figure 1 As shown, an electrode plate color head switching device 5 is provided at the switching end 11 b of the barrel 11 , and the electrode plate color head switching device 5 includes a second electrode plate 6 , a color head 7 and a switching mechanism.

[0037] See also Figure 2 and Figure 3 As shown, the color head 7 includes a box body 71 , one end of which is a detection port, and a light source 72 and a color receiver 73 are provided in the box body 71 .

[0038] See also Figure 1 and Figure 2 As shown, the second electrode plate 6 and the color head 7 are alternately docked with the switching end 11b of the barrel body under the action of the switching mechanism; when the second electrode plate 6 is docked with the switching end 11b of the barrel body, the second electrode plate 6 covers the switching end port of the barrel body; when the color head 7 is docked with the switching end 11b of the barrel body, the detection port of the color head 7 covers the switching end port of the barrel body.

[0039] The first electrode plate 2 and the second electrode plate 6 are connected to a moisture regain detection circuit module.

[0040] The color receiver 73 of the color head 7 is connected to a color detection circuit module.

[0041] Multiple ventilation holes are provided on the first electrode plate 2 and the second electrode plate 6. When the second electrode plate 6 is docked with the switching end 11b of the barrel, the space between the first electrode plate 2 and the second electrode plate 6 is communicated with the outside world through the ventilation holes on one of the first electrode plate 2 and the second electrode plate 6, and at the same time is connected to a micronaire detection module through the ventilation holes on the other of the first electrode plate 2 and the second electrode plate 6.

[0042] Specifically, the vent hole of the second electrode plate 6 is connected to the outside world, and the space between the first electrode plate 2 and the end cover 12 serves as a vent cavity. A spring 31 acts on the push rod 3 to maintain the vent cavity between the first electrode plate 2 and the end cover 12. The vent cavity is provided with an air inlet hole 13 and a detection hole 14.

[0043] For details, see Figure 2 and Figure 3 As shown, the switching mechanism of the electrode plate color head switching device 5 includes a plurality of guide rails 51 parallel to the end face of the switching end 11b of the barrel body 11. The second electrode plate 6 and the color head 7 are arranged side by side and installed on the guide rails 51 and can be translated along the guide rails 51, that is, the second electrode plate 6 and the color head 7 can be translated on the guide rails 51 manually or automatically so as to be in contact with the switching end 11b of the barrel body 11.

[0044] Preferably, the second electrode plate 6 and the color head 7 are fixed on the same slide 9 and synchronously driven by a translation drive mechanism 52. The translation drive mechanism 52 can be a servo motor connected to a screw nut mechanism to achieve precise translation switching.

[0045] Furthermore, a ceramic plate 74 is provided on the side of the switching end 11b of the barrel 11; by moving the color head 7, it can be alternately docked with the switching end port of the barrel 11 and the ceramic plate 74, so as to calibrate the color head during operation.

[0046] See also Figure 1 and Figure 2 As shown, the second electrode plate 6 and the color head 7 have a first working state, a second working state, and a third working state. In the first working state, the second electrode plate 6 and the color head 7 are staggered from the switching end 11b of the barrel, so that the switching end 11b of the barrel is open for setting out or sampling; in the second working state, the second electrode plate 6 is docked with the switching end 11b of the barrel, and the three indicators of regain, micronaire value, and compression elasticity can be tested. In the third working state, the color head 7 is docked with the switching end 11b of the barrel to complete the color grade index test.

[0047] The above Figure 1 For better illustration, the barrel 11 of the sample barrel 1 is vertically arranged, with the switching end 11b at the top and the compression end 11b facing downwards. In practice, it can also be inverted, with the barrel lying flat, or even tilted at a certain angle.

[0048] Figure 4 This is a block diagram of a moisture regain detection circuit. Specifically, with the second electrode plate 6 switched to docking with the switching end 11b of the barrel 11, a fixed amount of sample is placed between the first electrode plate 2 and the second electrode plate 6, and the push rod 3 is driven to perform a fixed amount of compression. The potential difference between the first and second electrode plates 2 and 6 is then measured, and the resistance value is obtained. This is used to calculate the moisture regain. This is the resistance method. Of course, the specific moisture regain detection circuit block diagram is only an example, and other existing detection circuits are also feasible.

[0049] Figure 5 This is a schematic block diagram of the color detection circuit module, essentially the same as the HVI color module. When performing color grade detection, the color head is docked with the switch end 11b of the sample tube body 11. A light source 72 located at a 45-degree angle within the housing 71 illuminates the sample. A color receiver 73, located at the top of the housing, receives the Y and Z color signals and calculates the cotton's reflectivity Rd and yellowness + b using Hunter coordinates. The specific color head structure and detection circuit described above are examples only; other existing color detection methods are also feasible.

[0050] Figure 6Schematic diagram of the micronaire detection module. The micronaire detection module specifically includes an air pump, a constant pressure air reservoir, an air pressure sensor, and a micronaire detection circuit. When connected, the air pump inputs constant pressure air to the air inlet 13 on the barrel through the constant pressure air reservoir, and the detection hole 14 on the barrel is connected to the air pressure sensor of the micronaire detection module. The principle of micronaire detection is that, when the second electrode plate 6 is switched to the state of docking with the switching end 11b of the barrel 11, a quantitative sample is placed between the first electrode plate 2 and the second electrode plate 6, and the push rod 3 is driven to quantitatively compress the sample. Then, a certain constant pressure gas is fed into the lower end air inlet 13 of the sample. These gases enter the sample through the vent hole of the first electrode plate 2, circulate to the top through the fiber gap of the sample, and then circulate to the outside world through the vent hole of the second electrode plate 6. At this time, the air pressure value of the sample cavity in the barrel is measured by the detection end, thereby calculating the micronaire value.

[0051] See also Figure 1 and Figure 7 As shown, a pressure sensor 8 is further provided between the first electrode plate 2 and the push rod 3. During the process of compressing the sample, the pressure sensor 8 can output the pressure value to the compression elasticity detection circuit module in real time, and the compression elasticity detection circuit module integrates and calculates the compression rebound index of the sample.

[0052] When this embodiment is working, the sample can be laid out at one time and quantitatively compressed into place to test the three indicators of regain, micronaire value and compression elasticity. Then, the electrode plate color head switching device 5 is switched to the color head 7 and connected with the switching end 11b of the barrel to perform color grade detection. The detection efficiency is extremely high and it is fully automatic. It is particularly suitable for the heavy workload of cotton detection in my country.

[0053] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An integrated cotton quality index detection device, characterized by: The invention comprises a sample cylinder (1) having a cylinder body (11) with a uniform cross-section, wherein one end of the cylinder body (11) serves as a compression end (11a) and the other end serves as a switching end (11b); An end cap (12) is provided on the compression end (11a) of the barrel (11), and a first electrode plate (2) is provided inside the barrel (11) on the side close to the compression end (11a), wherein the outer edge of the first electrode plate (2) matches the cross section of the barrel (11), the first electrode plate (2) is insulatedly connected to a push rod (3), and the push rod (3) extends through the end cap (12) and is connected to a push rod driving device (4); An electrode plate color head switching device (5) is provided at the switching end (11b) of the barrel (11), and the electrode plate color head switching device (5) comprises a second electrode plate (6), a color head (7) and a switching mechanism, wherein the color head (7) comprises a box (71), one end of the box (71) is a detection port, and a light source (72) and a color receiver (73) are provided in the box (71); the second electrode plate (6) and the color head (7) are alternately docked with the switching end (11b) of the barrel under the action of the switching mechanism; when the second electrode plate (6) docks with the switching end (11b) of the barrel, the second electrode plate (6) covers the switching end port of the barrel; when the color head (7) docks with the switching end (11b) of the barrel, the detection port of the color head (7) covers the switching end port of the barrel; The first electrode plate (2) and the second electrode plate (6) are connected to a moisture regain detection circuit module; The color receiver (73) of the color head (7) is connected to a color detection circuit module; A plurality of vent holes are provided on each of the first electrode plate (2) and the second electrode plate (6); when the second electrode plate (6) is docked with the switching end (11b) of the barrel, the space between the first electrode plate (2) and the second electrode plate (6) is communicated with the outside world through the vent holes on one of the first electrode plate (2) and the second electrode plate (6), and is simultaneously connected to a micronaire detection module through the vent holes on the other of the first electrode plate (2) and the second electrode plate (6); A pressure sensor (8) is provided in series between the first electrode plate (2) and the push rod (3) or on the push rod (3), and the output of the pressure sensor (8) is connected to a compression elasticity detection circuit module; The ventilation hole of the second electrode plate (6) is in communication with the outside, and the space between the first electrode plate (2) and the end cover (12) serves as a ventilation cavity. The micronaire detection module includes an air pump, an air pressure sensor, and a micronaire detection circuit. The ventilation cavity is connected to the air pump via an air inlet hole (13) and is connected to the air pressure sensor via a detection hole (14). The switching mechanism comprises a guide rail (51) parallel to the end surface of the switching end (11b) of the barrel (11); the second electrode plate (6) and the color head (7) are arranged in parallel and mounted on the guide rail (51) and can be translated along the guide rail (51).

2. The integrated cotton quality index detection device according to claim 1, characterized in that: A porcelain plate (74) is provided on the side of the switching end (11b) of the barrel (11); and the color head (7) can be moved so as to alternately connect with the switching end port of the barrel (11) and the porcelain plate (74).

3. The integrated cotton quality index detection device according to claim 1, characterized in that: The second electrode plate (6) and the color head (7) are fixed to each other and are synchronously driven by a translation drive mechanism (52).

4. The integrated cotton quality index detection device according to claim 3, characterized in that: The second electrode plate (6) and the color head (7) have a first working state, a second working state, and a third working state; in the first working state, the second electrode plate (6) and the color head (7) are staggered with the switching end (11b) of the barrel body so that the switching end (11b) of the barrel body is open; in the second working state, the second electrode plate (6) is docked with the switching end (11b) of the barrel body, and in the third working state, the color head (7) is docked with the switching end (11b) of the barrel body.

5. The integrated cotton quality index detection device according to claim 1, characterized in that: The push rod driving device (4) is a servo motor or an electric cylinder.

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