A method for detecting flour gluten strength

Abstract

The present invention relates to the technical field of flour gluten strength detection, specifically a flour gluten strength detection method, comprising the following steps: SS01, flour agglomeration, before the detection operation, a quantitative proportion of flour and water are put into a flour gluten strength detection device, after the materials are put into the flour gluten strength detection device, the flour gluten strength detection device stirs the materials, and makes the flour in the flour gluten strength detection device maintain a set viscosity, SS02, physical detection, the flour in the flour gluten strength detection device is sequentially subjected to tensile testing and torsion testing to assist in judging the flour gluten degree, SS03, chemical testing, extracting the flour in the flour gluten strength detection device. The beneficial effect of the present invention is that when the present invention detects the flour gluten strength, the chemical detection method and the physical detection method can be comprehensively utilized to quickly measure the flour gluten strength of the flour, and the above-mentioned double-effect detection effect is realized, thereby effectively improving the detection accuracy of the flour gluten strength of the device.

Description

Technical Field

[0001] The invention relates to the technical field of flour gluten strength detection, in particular to a flour gluten strength detection method. Background Art

[0002] Flour is a powder made from wheat. According to the protein content in the flour, it can be divided into high-gluten flour, medium-gluten flour, low-gluten flour and gluten-free flour. Currently, there are many types of flour on the market, so the quality inspection department needs to test these flours.

[0003] In the prior art, a patent document with publication number CN214622334U discloses an automatic detection device for flour gluten content, comprising a detection box and a mounting shaft, a magnetic stirrer is fixedly provided on the bottom plate inside the detection box, a detection cup is fixedly provided on the top of the magnetic stirrer, the detection cup is a quartz glass cup, a stirrer is movably placed on the bottom plate inside the detection cup, an image sensor is fixedly provided on the inner wall of the left side plate of the detection box, a reagent box, a hopper, and a water tank are fixedly provided on the top of the detection box from left to right in sequence, and a liquid outlet is fixedly provided on the bottom of the reagent box. The above detection device can automatically add biuret reagent and distilled water into the detection cup to react chemically with the protein in the flour sample, and by providing a magnetic stirrer and a stirrer, the solid-liquid mixture can be stirred to accelerate the reaction rate and make the protein react completely, and by providing an image processing chip and an image sensor, the color of the protein in the flour sample after the reaction can be compared with the standard color of flour with different gluten content after the reaction, so as to judge the protein content range of the flour sample, that is, the gluten content of the flour sample.

[0004] However, the above detection device is not convenient for realizing automatic sampling and detection of flour and automatic cleaning of the detection mechanism after detection during detection. At the same time, the existing detection device cannot integrate chemical detection and physical detection functions.

[0005] Based on this, the present invention provides a method for detecting the gluten strength of flour to solve the problems raised in the above background technology. Summary of the invention

[0006] The present invention aims at the technical problems existing in the prior art and provides a flour gluten strength detection method to solve the problem that the existing detection device is not convenient for realizing automatic sampling and detection of flour and automatic cleaning of the detection mechanism after detection during detection, and the existing detection device cannot integrate chemical detection and physical detection functions.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: A method for detecting the gluten strength of flour comprises the following steps:

[0008] SS01, flour agglomeration. Before the test, a quantitative ratio of flour and water is put into the flour gluten strength test device. After the materials are put into the flour gluten strength test device, the flour gluten strength test device stirs the materials and maintains the flour in the flour gluten strength test device at a set viscosity.

[0009] SS02, physical testing, the flour in the flour gluten strength testing device is subjected to tensile testing and torsion testing in turn to assist in determining the gluten strength of the flour;

[0010] SS03, chemical testing, extracting flour from the flour gluten strength testing device, and adding a certain amount of biuret reagent and distilled water to the extracted flour to react chemically with the protein in the flour sample, collecting the color of the flour after the reaction with the protein through the visual collection sensor set in the flour gluten strength testing device, and comparing the color of the protein in the flour sample after the reaction with the standard color of flour with different gluten strengths, so as to determine the protein content range of the flour sample, that is, the gluten strength of the flour;

[0011] The flour gluten strength detection device comprises a mixing drum, a mixing component is installed in the mixing drum, a liftable inspection frame is installed on the mixing drum, a transmission gear ring is rotatably connected to the inspection frame, a rotational rotating frame is rotatably connected to the inner side of the transmission gear ring, two servo motors and a visual acquisition sensor are installed on the inspection frame, the transmission gear ring and the rotational rotating frame are driven by a servo motor respectively, an inner cylinder assembly is arranged on the inner side of the rotational rotating frame, an outer cylinder is installed on the rotational rotating frame, two chemical reaction components are installed on the outer cylinder, and a material detection component is installed on the surface of the inspection frame.

[0012] Based on the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, a frame is installed on the bottom surface of the mixing drum, a group of lifting push rods are installed between the opposite surfaces of the mixing drum and the inspection frame, the bottom of the mixing drum is connected to a discharge pipe, a discharge valve is installed inside the discharge pipe, a single-chip microcomputer is installed on the end surface of the mixing drum, the data end of the visual acquisition sensor is electrically connected to the single-chip microcomputer, and a display screen electrically connected to the single-chip microcomputer is installed on the surface of the inspection frame.

[0014] The beneficial effect of adopting the above further scheme is that, when in use, the display screen is used to display the visual acquisition screen of the visual acquisition sensor in real time, and the single-chip microcomputer has a built-in image recognition module. The image recognition module performs real-time image analysis and image comparison on the screen collected by the visual acquisition sensor, and then uses visual detection means to determine the gluten degree of the flour.

[0015] Furthermore, the stirring component comprises a stirring motor fixed on the discharge pipe, a stirring shaft is mounted on the output shaft end of the stirring motor, and a group of stirring blades is mounted on the stirring shaft.

[0016] The beneficial effect of adopting the above further solution is that, when in use, the stirring component stirs the flour and water put into the mixing drum, and finally the flour and water in the mixing drum are mixed to a set viscosity.

[0017] Furthermore, the inner cylinder assembly includes a cleaning hose fixedly connected to the inspection frame, an inner cylinder fixed on the inspection frame, the inner cylinder is rotatably connected to the indexing and rotating frame, the inner cylinder is provided with a liquid injection chamber and a cleaning chamber isolated from each other, the inner cylinder is provided with two liquid permeable holes, the two liquid permeable holes are respectively connected to the liquid injection chamber and the cleaning chamber, the tail end of the cleaning chamber is connected to the cleaning hose, a liquid storage tank is fixedly installed on the surface of the inspection frame, the reaction liquid is stored in the liquid storage tank, a pump body is installed at the bottom of the liquid storage tank, and the liquid outlet port of the pump body is connected to the liquid injection chamber.

[0018] The beneficial effect of adopting the above further solution is that when the chemical reaction component moves to a position adjacent to the visual acquisition sensor, the reaction cylinder is connected to the chemical reaction component and the reaction liquid is quantitatively fed into the interior of the reaction cylinder. At this time, the open end of the reaction cylinder in the chemical reaction component is vertically arranged upward;

[0019] When the chemical reaction component moves to a position offset from the visual collection sensor and the open end of the reaction tube is vertically downward, the cleaning chamber delivers cleaning liquid into the interior of the reaction tube through the liquid permeable hole, and then cleans the inner wall of the reaction tube.

[0020] Further, the chemical detection component includes a liquid guide tube fixedly connected to the outer tube, the liquid guide tube is rotatably connected to an inner rotating shaft, the inner rotating shaft is rotatably connected to a reaction tube, the inner rotating shaft and the reaction tube are driven by a transmission gear ring, the inner rotating shaft is respectively equipped with a spiral conveying blade and a stirring seat, the stirring seat is equipped with a spiral stirring blade, the spiral stirring blade is slidably fitted with the reaction tube, a flow channel is fixedly provided on the inner rotating shaft, the flow channel can be connected to the liquid permeable hole through the liquid guide tube, a plurality of groups of regularly distributed liquid outlet holes connected to the flow channel are provided on the inner rotating shaft, and a group of regularly distributed material picking holes are provided on the top of the reaction tube.

[0021] Furthermore, the inner wall of the indexing and rotating frame is rotatably connected with a gear shaft, on which a driven gear and a linkage bevel gear are respectively installed, and the driven gear is transmission-connected to the transmission gear ring, and the bottom of the reaction cylinder and the inner rotating shaft are both installed with driven bevel gears, and the two driven bevel gears are transmission-connected to the linkage bevel gears, and the two driven bevel gears are respectively arranged on both sides of the linkage bevel gear.

[0022] Furthermore, the height of the spiral conveying blade is 1.2 times the height of the reaction tube, the end of the reaction tube is open, and the axial direction of the reaction tube is perpendicular to the axial direction of the outer tube.

[0023] The beneficial effect of adopting the above further scheme is that when in use, when the open end of the reaction cylinder is vertically downward, the spiral conveying blade samples the flour to be tested from the stirring drum, and when the spiral conveying blade works, the flour material is conveyed to the inside of the reaction cylinder. When the spiral stirring blade rotates, the conveying direction of the spiral stirring blade is simultaneously opposite to the open end of the reaction cylinder. After the spiral conveying blade finishes taking the material, as the outer cylinder rotates, the reaction cylinder and the visual collection sensor are arranged adjacent to each other, and the reaction liquid is quantitatively injected into the sampled flour material in the reaction cylinder, and the reaction liquid and the sampled flour are fully mixed and reacted. The visual collection sensor performs real-time visual collection and visual analysis and comparison on the color of the reaction liquid. When the open end of the reaction cylinder is downward again, the reaction liquid and reaction material after the reaction are completed are sent to the stirring drum and discharged through the discharge valve.

[0024] Further, the physical detection component includes a screw lifting module installed on the inspection frame, the screw lifting module is transmission-connected with a lifting platform, a group of driven rotary tubes are rotatably connected on the lifting platform, the top surface of each driven rotary tube is connected to a detection ring through a group of pressure sensors, the inner wall of the driven rotary tube is slidably connected with an inspection shaft, a sampling head is installed on the bottom surface of the inspection shaft, a limit ring is fixedly installed on the inspection shaft and at a position corresponding to the top of the detection ring, a transmission shaft is rotationally connected on the inspection frame and at a position corresponding to the top of each driven rotary tube, the transmission shaft is transmission-connected to the inspection shaft, a group of driving shafts are rotationally connected to the inner wall of the inspection frame, a transmission motor is installed on the surface of the inspection frame, the output shaft end of the transmission motor is transmission-connected with a chain belt, the driving shaft and the transmission shaft are both transmission-connected with the chain belt, the bottom end of each driving shaft is connected to a torque measuring shaft through a torque sensor, and the bottom end of each torque measuring shaft is installed with an L-shaped stirring rod.

[0025] The beneficial effect of adopting the above further scheme is that during physical detection, the pressure sensor performs self-zeroing. After the zeroing is completed, the sampling head is immersed in the mixed flour to a specified depth. Then, the lifting platform drives the sampling head to reset. When the sampling head is reset, the pressure sensor is pressurized. By detecting the data value of the pressure sensor, the flour gluten degree is judged, and the surface of the sampling head maintains a set roughness, and then maintains a set adhesion with the flour;

[0026] After the pressure sensor detects, the L-shaped stirring rod is immersed in the flour to a specified depth. Then, the torque measuring shaft rotates slowly. The peak value of the torque sensor is monitored to assist in determining the gluten content of the flour.

[0027] Furthermore, cleaning spray channels are provided inside the transmission shaft and the inspection shaft, and the two cleaning spray channels are interconnected. The transmission shaft is slidably connected to the cleaning spray channel in the inspection shaft. The cross-sections of the cleaning spray channel in the inspection shaft and the transmission shaft are both regular polygons. A liquid dispensing tube is installed on the inspection frame, and the liquid dispensing tube is connected to the cleaning hose. The bottom surface of the liquid dispensing tube is connected to the cleaning spray channel through a joint. A group of cleaning nozzles connected to the cleaning spray channel are installed on the bottom surface of the inspection shaft and at a position corresponding to the outside of the sampling head.

[0028] Furthermore, the cleaning nozzle is arranged to be inclined toward the sampling head, the angle between the axis of the cleaning nozzle and the horizontal plane is 45°, and valves are arranged at the connection points between the cleaning hose, the liquid dispensing tube and the cleaning chamber.

[0029] The beneficial effect of adopting the above further solution is that after the detection is completed, the cleaning nozzle discharges liquid at high pressure, and then the sampling head is cleaned at high pressure to facilitate the reuse of the sampling head.

[0030] The beneficial effects of the present invention are:

[0031] 1. When testing the gluten strength of flour, the present invention can comprehensively utilize chemical testing methods and physical testing methods to quickly measure the gluten strength of flour. By achieving the above-mentioned dual-effect detection effect, the detection accuracy of the device for the gluten strength of flour is effectively improved. At the same time, the detection device can realize automatic sampling of the sample to be tested and automatic cleaning of the detection mechanism during detection, thereby effectively improving the functionality and detection efficiency of the device.

[0032] 2. During the chemical detection of the present invention, flour is extracted from the flour gluten strength detection device, and a certain amount of biuret reagent and distilled water are added to the extracted flour to chemically react with the protein in the flour sample. The color of the flour after the reaction with the protein is collected by a visual collection sensor provided in the flour gluten strength detection device, and the color of the protein in the flour sample after the reaction is compared with the standard color of flour with different gluten strengths after the reaction, so as to determine the protein content range of the flour sample, that is, the gluten strength of the flour.

[0033] 3. During the physical detection of the present invention, the pressure sensor first performs self-zeroing. After the zeroing is completed, the sampling head is immersed in the mixed flour to a specified depth. Subsequently, the lifting platform drives the sampling head to reset. When the sampling head is reset, the pressure sensor is pressurized. The gluten degree of the flour is determined by detecting the data value of the pressure sensor. The surface of the sampling head maintains a set roughness, and then maintains a set adhesion with the flour. After the pressure sensor detects, the L-shaped stirring rod is immersed in the flour to a specified depth. Subsequently, the torsion measuring shaft rotates slowly, and the peak value of the torque sensor is monitored to assist in determining the gluten degree of the flour. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of a flour gluten strength detection device used in a flour gluten strength detection method of the present invention;

[0035] Figure 2 For the present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0036] Figure 3 For the present invention Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0037] Figure 4 For the present invention Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0038] Figure 5 It is a structural schematic diagram of the liquid storage tank and the reaction cylinder of the present invention;

[0039] Figure 6 For the present invention Figure 5 A schematic diagram of the local enlarged structure at C in the middle;

[0040] Figure 7 For the present invention Figure 5 A schematic diagram of the local enlarged structure at D in the middle;

[0041] Figure 8 It is a schematic diagram of the structure of the liquid storage tank and the sampling head of the present invention;

[0042] Fig. 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at E in the middle;

[0043] Fig.10 It is a schematic diagram of the cross-sectional structure of the inspection axis and the sampling head of the present invention.

[0044] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0045] 1. Flour gluten strength detection device; 2. Visual acquisition sensor; 3. Mixing drum; 4. Inspection frame; 5. Transmission gear ring; 6. Rotating frame; 7. Servo motor; 8. Outer drum; 9. Frame; 10. Lifting push rod; 11. Discharge pipe; 12. Single chip microcomputer; 13. Display screen; 14. Mixing motor; 15. Mixing shaft; 16. Mixing blade; 17. Cleaning hose; 18. Inner drum; 19. Liquid injection chamber; 20. Cleaning chamber; 21. Liquid permeable hole; 22. Liquid storage tank; 23. Liquid guide tube; 24. Inner rotating shaft; 25. Reaction drum; 2 6. Spiral conveying blade; 27. Agitator seat; 28. Spiral agitator blade; 29. ​​Flow channel; 30. Pick-up hole; 31. Gear shaft; 32. Driven gear; 33. Screw lifting module; 34. Lifting platform; 35. Driven rotary tube; 36. Pressure sensor; 37. Detection ring; 38. Detection shaft; 39. Sampling head; 40. Limiting ring; 41. Transmission shaft; 42. Drive shaft; 43. Transmission motor; 44. Torque sensor; 45. Torsion measuring shaft; 46. L-shaped agitator rod; 47. Liquid dispensing tube; 48. Cleaning nozzle; 49. Liquid outlet. DETAILED DESCRIPTION

[0046] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0047] The present invention provides the following preferred embodiments

[0048] like Figure 1-10 As shown, a method for detecting the gluten strength of flour comprises the following steps:

[0049] SS01, flour is formed into a ball. Before the detection operation, a quantitative ratio of flour and water is put into the flour gluten strength detection device 1. After the materials are put into the flour gluten strength detection device 1, the flour gluten strength detection device 1 stirs the materials and maintains the flour in the flour gluten strength detection device 1 at a set viscosity;

[0050] SS02, physical testing, performing tensile testing and torsion testing on the flour in the flour gluten strength testing device 1 in sequence to assist in determining the gluten strength of the flour;

[0051] SS03, chemical testing, extracting flour from the flour gluten strength testing device 1, and adding a certain amount of biuret reagent and distilled water to the extracted flour to react chemically with the protein in the flour sample, collecting the color of the flour after the reaction with the protein through the visual collection sensor 2 provided in the flour gluten strength testing device 1, and comparing the color of the protein in the flour sample after the reaction with the standard color of flour with different gluten strengths after the reaction, so as to determine the protein content range of the flour sample, that is, the gluten strength of the flour;

[0052] The flour gluten strength detection device 1 comprises a mixing drum 3;

[0053] A frame 9 is installed on the bottom surface of the mixing drum 3, a discharge pipe 11 is connected to the bottom of the mixing drum 3, a discharge valve is installed inside the discharge pipe 11, a single-chip microcomputer 12 is installed on the end surface of the mixing drum 3, the data end of the visual acquisition sensor 2 is electrically connected to the single-chip microcomputer 12, and a display screen 13 electrically connected to the single-chip microcomputer 12 is installed on the surface of the inspection frame 4.

[0054] When in use, the display screen 13 is used to display the visual acquisition screen of the visual acquisition sensor 2 in real time. The single-chip computer 12 has a built-in image recognition module. The image recognition module performs real-time image analysis and image comparison on the screen collected by the visual acquisition sensor 2, and then determines the gluten degree of the flour through visual detection means.

[0055] A stirring component is installed in the mixing drum 3;

[0056] The stirring component comprises a stirring motor 14 fixed on the discharge pipe 11 , a stirring shaft 15 is mounted on the output shaft end of the stirring motor 14 , and a group of stirring blades 16 are mounted on the stirring shaft 15 .

[0057] When in use, the stirring component stirs the flour and water put into the stirring drum 3, and finally the flour and water in the stirring drum 3 are mixed to a set viscosity.

[0058] A liftable inspection frame 4 is installed on the mixing drum 3, a group of lifting push rods 10 are installed between the relative surfaces of the mixing drum 3 and the inspection frame 4, a transmission gear ring 5 is rotatably connected to the inspection frame 4, and a transfer rotating frame 6 is rotatably connected to the inner side of the transmission gear ring 5, two servo motors 7 and a visual acquisition sensor 2 are installed on the inspection frame 4, the transmission gear ring 5 and the transfer rotating frame 6 are driven by a servo motor 7 respectively, an inner cylinder assembly is arranged on the inner side of the transfer rotating frame 6, an outer cylinder 8 is installed on the transfer rotating frame 6, two chemical reaction components are installed on the outer cylinder 8, and a material detection component is installed on the surface of the inspection frame 4.

[0059] The inner cylinder assembly includes a cleaning hose 17 fixedly connected to the inspection frame 4, an inner cylinder 18 fixed on the inspection frame 4, the inner cylinder 18 is rotatably connected to the indexing and rotating frame 6, and the inner cylinder 18 is provided with a liquid injection chamber 19 and a cleaning chamber 20 isolated from each other. The inner cylinder 18 is provided with two liquid permeable holes 21, which are respectively connected to the liquid injection chamber 19 and the cleaning chamber 20, and the tail end of the cleaning chamber 20 is connected to the cleaning hose 17. A liquid storage tank 22 is fixedly installed on the surface of the inspection frame 4, and a reaction liquid is stored in the liquid storage tank 22. A pump body is installed at the bottom of the liquid storage tank 22, and the liquid outlet port of the pump body is connected to the liquid injection chamber 19.

[0060] When the chemical reaction component moves to a position adjacent to the visual acquisition sensor 2, the reaction cylinder 25 is connected to the chemical reaction component and the reaction liquid is quantitatively fed into the reaction cylinder 25. At this time, the opening end of the reaction cylinder 25 in the chemical reaction component is vertically arranged upward;

[0061] When the chemical reaction component moves to a position offset from the visual acquisition sensor 2 and the open end of the reaction tube 25 is vertically downward, the cleaning chamber 20 delivers cleaning liquid into the reaction tube 25 through the liquid permeable hole 21 to clean the inner wall of the reaction tube 25 .

[0062] The chemical detection component includes a liquid guide tube 23 fixedly connected to the outer tube 8, the liquid guide tube 23 is rotatably connected to an inner rotating shaft 24, the inner rotating shaft 24 is rotatably connected to a reaction tube 25, the inner rotating shaft 24 and the reaction tube 25 are both driven by a transmission gear ring 5, the inner rotating shaft 24 is respectively equipped with a spiral conveying blade 26 and a stirring seat 27, the stirring seat 27 is equipped with a spiral stirring blade 28, the spiral stirring blade 28 is slidably fitted with the reaction tube 25, a flow channel 29 is fixedly opened on the inner rotating shaft 24, the flow channel 29 can be connected to the liquid permeable hole 21 through the liquid guide tube 23, a plurality of groups of regularly distributed liquid outlet holes 49 connected to the flow channel 29 are opened on the inner rotating shaft 24, and a group of regularly distributed material picking holes 30 are opened on the top of the reaction tube 25.

[0063] The inner wall of the indexing and rotating frame 6 is rotatably connected with a gear shaft 31, on which a driven gear 32 and a linkage bevel gear are respectively installed, and the driven gear 32 is transmission-connected with the transmission gear ring 5, and the bottom of the reaction cylinder 25 and the inner rotating shaft 24 are both installed with driven bevel gears, and the two driven bevel gears are both transmission-connected with the linkage bevel gears, and the two driven bevel gears are respectively arranged on both sides of the linkage bevel gear.

[0064] The height of the spiral conveying blade 26 is 1.2 times the height of the reaction tube 25 . The end of the reaction tube 25 is open, and the axial direction of the reaction tube 25 is perpendicular to the axial direction of the outer tube 8 .

[0065] During use, when the open end of the reaction cylinder 25 is vertically downward, the spiral conveying blade 26 samples the flour to be tested from the mixing drum 3. When the spiral conveying blade 26 works, the flour is conveyed to the inside of the reaction cylinder 25. When the spiral stirring blade 28 rotates, the conveying direction of the spiral stirring blade 28 is simultaneously opposite to the open end of the reaction cylinder 25. After the spiral conveying blade 26 has finished taking the material, as the outer cylinder 8 rotates, the reaction cylinder 25 is adjacent to the visual collection sensor 2, and the reaction liquid is quantitatively injected into the sampled flour in the reaction cylinder 25, and the reaction liquid and the sampled flour are fully mixed and reacted. The visual collection sensor 2 performs real-time visual collection and visual analysis and comparison on the color of the reaction liquid. When the open end of the reaction cylinder 25 is downward again, the reaction liquid and the reaction material after the reaction are completed are sent to the mixing drum 3 and discharged through the discharge valve.

[0066] The physical detection component includes a screw lifting module 33 installed on the inspection frame 4, the screw lifting module 33 is connected to a lifting platform 34, a group of driven rotary tubes 35 are rotatably connected to the lifting platform 34, the top surface of each driven rotary tube 35 is connected to a detection ring 37 through a group of pressure sensors 36, the inner wall of the driven rotary tube 35 is slidably connected to a detection shaft 38, the bottom surface of the detection shaft 38 is installed with a sampling head 39, and a limit ring 40 is fixedly installed on the detection shaft 38 and at a position corresponding to the top of the detection ring 37. A transmission shaft 41 is rotatably connected to the position directly above each driven rotary tube 35, and the transmission shaft 41 is transmission-connected to the inspection shaft 38. A group of drive shafts 42 are rotatably connected to the inner wall of the inspection frame 4. A transmission motor 43 is installed on the surface of the inspection frame 4. The output shaft end of the transmission motor 43 is transmission-connected to a chain belt. The drive shaft 42 and the transmission shaft 41 are both transmission-connected to the chain belt. The bottom end of each drive shaft 42 is connected to a torque measuring shaft 45 through a torque sensor 44, and the bottom end of each torque measuring shaft 45 is installed with an L-shaped stirring rod 46.

[0067] During physical testing, the pressure sensor 36 performs self-zeroing. After the zeroing is completed, the sampling head 39 is immersed in the mixed flour to a specified depth. Then, the lifting platform 34 drives the sampling head 39 to reset. When the sampling head 39 is reset, the pressure sensor 36 is pressurized. By detecting the data value of the pressure sensor 36, the flour gluten degree is determined. The surface of the sampling head 39 maintains a set roughness, and then maintains a set adhesion with the flour.

[0068] After the pressure sensor 36 detects, the L-shaped stirring rod 46 is immersed in the flour to a specified depth, and then the torque measuring shaft 45 rotates slowly, and the peak value of the torque sensor 44 is monitored to assist in judging the gluten degree of the flour.

[0069] Cleaning spray channels are provided inside the transmission shaft 41 and the inspection shaft 38, and the two cleaning spray channels are interconnected. The transmission shaft 41 is slidably connected to the cleaning spray channel inside the inspection shaft 38. The cross-sections of the cleaning spray channel inside the inspection shaft 38 and the cross-sections of the transmission shaft 41 are both regular polygons. A liquid dispensing tube 47 is installed on the inspection frame 4, and the liquid dispensing tube 47 is connected to the cleaning hose 17. The bottom surface of the liquid dispensing tube 47 is connected to the cleaning spray channel through a joint. A group of cleaning nozzles 48 connected to the cleaning spray channel are installed on the bottom surface of the inspection shaft 38 and at a position corresponding to the outer side of the sampling head 39.

[0070] The cleaning nozzle 48 is inclined toward the sampling head 39 , and the angle between the axis of the cleaning nozzle 48 and the horizontal plane is 45°. Valves are provided at the connection points between the cleaning hose 17 , the liquid dispensing tube 47 and the cleaning chamber 20 .

[0071] After the detection is completed, the cleaning nozzle 48 discharges liquid at high pressure, and then the sampling head 39 is cleaned at high pressure to facilitate the reuse of the sampling head 39.

Claims

1. A method for detecting the gluten strength of flour, characterized in that: The following steps are involved: SS01, flour is formed into a dough. Before the testing operation, flour and water in a quantitative ratio are put into the flour gluten strength testing device (1). After the materials are put into the flour gluten strength testing device (1), the flour gluten strength testing device (1) stirs the materials and maintains the flour in the flour gluten strength testing device (1) at a set viscosity; SS02, physical testing, performing tensile testing and torsional testing on the flour in the flour gluten strength testing device (1) in sequence to assist in determining the gluten strength of the flour; SS03, chemical testing, extracting flour from the flour gluten strength testing device (1), adding a certain amount of biuret reagent and distilled water to the extracted flour, causing a chemical reaction with the protein in the flour sample, collecting the color of the flour after the reaction with the protein through a visual collection sensor (2) provided in the flour gluten strength testing device (1), and comparing the color of the protein in the flour sample after the reaction with the standard color of flour with different gluten strengths after the reaction, thereby determining the protein content range of the flour sample, that is, the gluten strength of the flour; A flour gluten strength detection device (1) is used for detection. The flour gluten strength detection device (1) comprises a mixing drum (3). The bottom of the mixing drum (3) is connected to a discharge pipe (11). A discharge valve is installed inside the discharge pipe (11). A single-chip microcomputer (12) is installed on the end surface of the mixing drum (3). The data end of the visual acquisition sensor (2) is electrically connected to the single-chip microcomputer (12). A display screen (13) electrically connected to the single-chip microcomputer (12) is installed on the surface of the inspection frame (4). A mixing component is installed inside the mixing drum (3). The mixing component comprises a fixed A stirring motor (14) is mounted on the discharge pipe (11), a stirring shaft (15) is mounted on the output shaft end of the stirring motor (14), and a group of stirring blades (16) are mounted on the stirring shaft (15); a lifting and lowering inspection frame (4) is mounted on the stirring drum (3), a group of lifting and lowering push rods (10) are mounted between the opposing surfaces of the stirring drum (3) and the inspection frame (4), a transmission gear ring (5) is rotatably connected to the inspection frame (4), and a rotation rotating frame (6) is rotatably connected to the inner side of the transmission gear ring (5), and two servo motors (7) and a rotating frame (6) are mounted on the inspection frame (4). The visual acquisition sensor (2) is provided with a transmission gear ring (5) and a rotation frame (6) respectively driven by a servo motor (7); an inner cylinder assembly is arranged on the inner side of the rotation frame (6); an outer cylinder (8) is mounted on the rotation frame (6); two chemical reaction components are mounted on the outer cylinder (8); a material detection component is mounted on the surface of the inspection frame (4); the inner cylinder assembly comprises a cleaning hose (17) fixedly connected to the inspection frame (4), and an inner cylinder (18) fixed to the inspection frame (4); the inner cylinder (18) is rotationally connected to the rotation frame (6); The inner cylinder (18) is provided with a liquid injection chamber (19) and a cleaning chamber (20) which are isolated from each other. The inner cylinder (18) is provided with two liquid permeable holes (21), the two liquid permeable holes (21) are respectively connected to the liquid injection chamber (19) and the cleaning chamber (20), the tail end of the cleaning chamber (20) is connected to the cleaning hose (17), a liquid storage tank (22) is fixedly mounted on the surface of the inspection frame (4), the liquid storage tank (22) stores a reaction liquid, a pump body is mounted at the bottom of the liquid storage tank (22), and the liquid outlet port of the pump body is connected to the liquid injection chamber (19);The chemical detection component comprises a liquid guide tube (23) fixedly connected to an outer tube (8), the liquid guide tube (23) being rotatably connected to an inner rotating shaft (24), the inner rotating shaft (24) being rotatably connected to a reaction tube (25), the inner rotating shaft (24) and the reaction tube (25) being driven by a transmission gear ring (5), the inner rotating shaft (24) being respectively mounted with a spiral conveying blade (26) and a stirring seat (27), the stirring seat (27) being mounted with a spiral stirring blade (28), the spiral stirring blade (28) being slidably fitted with the reaction tube (25), the inner rotating shaft (24) being fixedly provided with a flow channel (29), the flow channel (29) being able to be connected to a liquid permeable hole (21) through the liquid guide tube (23), the inner rotating shaft ( A plurality of regularly distributed liquid outlet holes (49) are provided on the inner surface of the reaction barrel (25) and are connected to the flow channel (29); a group of regularly distributed material picking holes (30) are provided on the top of the reaction barrel (25); a gear shaft (31) is rotatably connected to the inner wall of the indexing and rotating frame (6); a driven gear (32) and a linkage bevel gear are respectively installed on the gear shaft (31); the driven gear (32) is transmission-connected to the transmission gear ring (5); the bottom of the reaction barrel (25) and the inner rotating shaft (24) are both installed with driven bevel gears; two driven bevel gears are transmission-connected to the linkage bevel gears; the two driven bevel gears are respectively arranged on both sides of the linkage bevel gears; the height of the spiral conveying blade (26) is 1.2 times the height of the reaction barrel (25); The end of the reaction tube (25) is open, and the axial direction of the reaction tube (25) is perpendicular to the axial direction of the outer tube (8); the physical detection component comprises a screw lifting module (33) installed on the detection frame (4), the screw lifting module (33) is connected to a lifting platform (34) in a transmission manner, and a group of driven rotary tubes (35) are rotatably connected to the lifting platform (34), the top surface of each driven rotary tube (35) is connected to a detection ring (37) through a group of pressure sensors (36), the inner wall of the driven rotary tube (35) is slidably connected to a detection shaft (38), the bottom surface of the detection shaft (38) is installed with a sampling head (39), and a position on the detection shaft (38) corresponding to the top of the detection ring (37) is fixed A limit ring (40) is installed, and a transmission shaft (41) is rotatably connected to the inspection frame (4) and the position corresponding to the top of each driven rotary tube (35), and the transmission shaft (41) is transmission-connected to the inspection shaft (38); a group of driving shafts (42) are rotatably connected to the inner wall of the inspection frame (4), and a transmission motor (43) is installed on the surface of the inspection frame (4), and the output shaft end of the transmission motor (43) is transmission-connected to a chain belt; the driving shaft (42) and the transmission shaft (41) are both transmission-connected to the chain belt, and the bottom end of each driving shaft (42) is connected to a torque measuring shaft (45) via a torque sensor (44), and the bottom end of each torque measuring shaft (45) is installed with an L-shaped stirring rod (46);The transmission shaft (41) and the inspection shaft (38) are both provided with cleaning channels, the two cleaning channels are interconnected, and the transmission shaft (41) is slidably connected to the cleaning channels in the inspection shaft (38); the cross-sections of the cleaning channels in the inspection shaft (38) and the transmission shaft (41) are both regular polygons; a liquid dispensing tube (47) is installed on the inspection frame (4); the liquid dispensing tube (47) is connected to the cleaning hose (17); the bottom surface of the liquid dispensing tube (47) is connected to the cleaning channels via a joint; a group of cleaning nozzles (48) connected to the cleaning channels are installed on the bottom surface of the inspection shaft (38) and at positions corresponding to the outside of the sampling head (39); the cleaning nozzles (48) are arranged in an inclined direction toward the sampling head (39); the angle between the axis of the cleaning nozzles (48) and the horizontal plane is 45°; valves are arranged at the connection points between the cleaning hose (17), the liquid dispensing tube (47) and the cleaning chamber (20). ; 2. A method for detecting gluten strength of flour according to claim 1, characterized in that: A frame (9) is mounted on the bottom surface of the mixing drum (3).

Images