Automatic spectrum detection system for food grease

Abstract

The invention relates to the technical field of Raman spectrum detection, and discloses an automatic spectrum detection system for food grease, which comprises a detection box, a laser, an optical fiber module, a driving motor, a sample turntable, a heating piece and a lifting structure, the detection box comprises a detection cavity, the driving motor is rotatably connected with the sample turntable, the sample turntable is provided with a plurality of circumferentially spaced placement grooves, and the placement grooves are provided with light passing openings towards the center side; the heating element is cylindrical, the heating wire is buried in the side wall, the inner wall and the bottom surface of the placing groove form a sample groove, the heating element slides up and down along the placing groove through the lifting structure, and the bottom wall descends below the light passing opening when the heating element rotates to the position between the laser and the optical fiber module. The system can heat a plurality of grease samples at the same time, time is saved, heat loss is little, temperature rise is balanced, and spectrum detection is not hindered.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Raman spectrum detection, and particularly relates to an automatic spectrum detection system for food oil. BACKGROUND

[0002] Scientifically adding oil in animal feed is an advanced nutrition method. Oil quality monitoring is related to economic benefits of breeding and food safety. Traditional oil detection methods, such as titration method, gas chromatography and high performance liquid chromatography, need professional operation and take a long time, and some equipment is expensive. In order to improve detection efficiency and reduce detection cost, an oil detection technical scheme based on Raman spectrum detection has attracted people's attention. Raman spectrum is a molecular vibration spectrum technology based on Raman scattering effect, which can identify specific chemical bonds or functional groups according to spectral characteristic peaks, and realize rapid analysis of multiple indexes at the same time. The technology shows great potential in the fields of oil quality control, safety screening and adulteration identification.

[0003] The Raman spectrometer is sensitive to environmental temperature changes. In order to ensure the accuracy of the detection results, it is necessary to ensure that the temperature is constant during its work. It is usually maintained at room temperature of about 25 DEG C to prevent the thermal deformation of internal optical devices from affecting the spectrum detection results. However, the melting points of different oils are different. For example, lard is milky white solid at room temperature. It is found through practice that the Raman spectrum of liquid sample is more suitable for oil detection scene. In order to make the Raman detection equipment suitable for oil products with different melting points, the Raman spectrometer and the sample to be detected are placed in different constant temperature cavities, and the working temperatures of the two are controlled independently. SUMMARY

[0004] The present application aims to improve at least one technical problem in the background art.

[0005] The present application provides an automatic spectrum detection system for food oil, comprising: a detection box, a laser, a fiber module, a driving motor, a sample turntable, a temperature raising part, a lifting structure; The detection box comprises a detection cavity. The driving motor is installed in the detection cavity and rotationally connected with the sample turntable. The sample turntable comprises a plurality of placement grooves arranged at intervals in the circumferential direction, and the side of the placement grooves facing the center of the sample turntable is provided with a light transmission port. The fiber module is fixedly arranged in the detection cavity. The laser is installed on the sample turntable, the fiber module is arranged in the detection cavity, and when the light transmission port of the sample turntable is rotated to between the laser and the fiber module, the laser of the laser is transmitted to the receiving end of the fiber module through the light transmission port. The heating element is in a cylindrical shape, the outer wall of the heating element abuts with the inner wall of the placing groove, the heating element slides up and down along the placing groove through a lifting structure, when the heating element rotates to the position between the laser and the optical fiber module with the sample turntable, the lifting structure lowers the bottom wall of the heating element below the light passage, The side wall of the heating element is embedded with a heating wire, the inner wall of the heating element and the bottom surface of the placing groove jointly form a sample groove for placing the oil sample to be detected.

[0006] The oil sample needs to be heated to about 60 degrees before detection to become liquid, the sample turntable enables the automatic food oil spectrum detection system to realize the simultaneous heating of multiple oil samples, which saves the heating time to a certain extent; the cylindrical heating element is used to heat the oil sample in the sample groove, the heating path of the oil sample is short, which reduces the heat dissipation to the spectrum detector to a certain extent, and the temperature rise in the height direction of the oil sample is more balanced; the lifting structure ensures that the heating element for heating the oil sample can fully cover the oil sample without hindering the spectrum detection of the oil sample, which improves the detection interference problem.

[0007] As some sub-solutions of the above technical solutions, the lifting structure comprises a spring, a lifting sliding groove, a lifting guide block, and a lifting guide rail, the lifting sliding groove is vertically arranged at the placing groove, the shape of the lifting sliding groove matches the shape of the heating element, the heating element slides along the lifting sliding groove, one side of the lifting sliding groove away from the center of the sample turntable is provided with a passage, the lifting guide block is located outside the sample turntable and connected with the bottom of the heating element through the passage, the spring is located at the bottom side of the lifting sliding groove, the top end of the spring abuts with the bottom of the heating element, the bottom end of the spring abuts with the sample turntable to provide upward elastic force for the heating element, the lifting guide rail is fixedly arranged in the detection box, the lifting guide rail comprises a transition plate and a lower plate connected in sequence, the upper end of the transition plate is located above the upper plate, the lower end of the transition plate is connected with the lower plate, when the heating element rotates to the position between the laser and the optical fiber module with the sample turntable, the top surface of the lifting guide block abuts with the bottom surface of the upper plate. Through the specific structural design of the lifting structure, the heating element can smoothly slide along the lifting sliding groove, the automatic reset of the heating element is realized by the elastic force of the spring, the accurate lowering positioning of the heating element at the detection position is realized by the cooperation of the transition plate and the lower plate, the action stability of the heating element in the detection and non-detection states is ensured, and the smoothness and reliability of the detection process are further improved.

[0008] As some sub-solutions of the above technical solutions, the spring makes the top side of the lifting guide block abut against the inner wall of the through hole when the lifting guide block and the lifting guide rail are not in contact. When the lifting guide block and the lifting guide rail are not in contact, the spring force makes the top side of the lifting guide block abut against the inner wall of the through hole, which can avoid the up-and-down movement of the heating device in the non-detection position, improve the stability of the heating device during heating, ensure the consistency of the heating environment of the oil sample, and thus improve the heating effect.

[0009] As some sub-solutions of the above technical solutions, the lifting guide block is provided with a rounded corner on both sides. The rounded corner on both sides of the lifting guide block can reduce the friction resistance when the lifting guide block contacts the transition plate of the lifting guide rail during rotation of the sample turntable, make the lifting guide block slide more smoothly along the transition plate, reduce the risk of jamming, ensure the continuity of the lifting action of the heating device, and improve the stability of system operation.

[0010] As some sub-solutions of the above technical solutions, the driving motor and the sample turntable are detachably connected. The detachable connection of the driving motor and the sample turntable facilitates disassembly and assembly when the sample turntable fails or needs maintenance, reduces the difficulty and cost of maintenance, and also facilitates replacement of different specifications of sample turntables according to detection needs, improving the versatility and maintenance convenience of the system.

[0011] As some sub-solutions of the above technical solutions, the automatic spectral detection system for food oil also includes a first magnetic suction block and a second magnetic suction block. The output end of the first magnetic suction block driving motor is drivingly connected, and the second magnetic suction block is fixedly connected with the sample turntable. The driving motor and the sample turntable are drivingly connected through the cooperation of the first magnetic suction block and the second magnetic suction block, which further simplifies the disassembly and assembly process of the sample turntable and the driving motor without the need for additional disassembly tools, improves the disassembly and assembly efficiency, and at the same time, the magnetic suction connection can buffer the vibration during transmission to some extent, improving the transmission stability.

[0012] As some sub-solutions of the above technical solutions, the outer periphery of the sample turntable is also provided with a disassembly gap. The disassembly gap provided on the outer periphery of the sample turntable provides a force point for disassembly of the sample turntable, which facilitates the operator to exert an external force through the disassembly gap to quickly separate the first magnetic suction block and the second magnetic suction block, further improving the convenience of disassembly and assembly of the sample turntable, and reducing the risk of damage to the sample turntable or other components during disassembly and assembly.

[0013] As some sub-schemes of the above technical solutions, the automatic spectral detection system of food oil further comprises a spectral analyzer, the spectral analyzer is located outside the detection cavity, and the spectral analyzer is in signal connection with the optical fiber module. The spectral analyzer is arranged outside the detection cavity and in signal connection with the optical fiber module, so that the influence of heat in the detection cavity on the working performance of the spectral analyzer can be avoided, and the accuracy of spectral analysis data is ensured. Meanwhile, the spectral analyzer is arranged independently of the detection cavity, so that the spectral analyzer is convenient to maintain and calibrate, and the stability of system detection precision is improved.

[0014] As some sub-schemes of the above technical solutions, the detection cavity is provided with a heat preservation layer. The heat preservation layer arranged outside the detection cavity can reduce the emission of heat in the detection cavity to the outside, improve the stability of temperature in the detection cavity, ensure the temperature uniformity of the oil sample heating process, improve the heating efficiency, and also reduce the influence of external environmental temperature on the temperature in the detection cavity, so as to provide stable environmental conditions for spectral detection.

[0015] As some sub-schemes of the above technical solutions, the top side of the detection box is provided with a sample loading port, and the top side of the detection box is provided with a hatch, which opens or closes the sample loading port. The sample loading port and the hatch arranged on the top side of the detection cavity can facilitate the operator to put the oil sample to be detected into the sample groove, and improve the convenience of sample loading. The sample loading port can be closed by closing the hatch during the detection process, so as to reduce the loss of heat in the detection cavity, and also to block external light, dust and other interference factors from entering the detection cavity, improve the environmental stability of spectral detection, and improve the reliability of detection data. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which: Figure 1 Structure diagram of the sample turntable and the optical fiber module of the automatic spectral detection system of food oil of the present application Figure One ; Figure 2 Sectional view of the sample turntable and the optical fiber module of the automatic spectral detection system of food oil of the present application, which is in a detection state; Figure 3 Sectional view of the automatic spectral detection system of food oil of the present application; Figure 4 Structure diagram of the sample turntable and the optical fiber module of the automatic spectral detection system of food oil of the present application Figure Two .

[0017] In the drawings: 1-detection box; 101-sample loading port; 102-hatch; 103-first magnetic suction block; 104-second magnetic suction block; 11-detection cavity; 3-Fiber optic module; 4-Drive motor; 5-Sample turntable; 51-Placement slot; 52-Light transmission port; 53-Disassembly notch; 6-Heating element; 62-Sample tank; 71-Spring; 72-Opening; 73-Lifting guide block; 731-Rounded corner; 74-Lifting guide rail; 741-Transition plate; 742-Lower plate; 9-Insulation layer. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The following is combined Figures 1 to 4 Embodiments of the present invention will be described.

[0020] In existing methods for spectral detection of food oils, samples need to be heated to approximately 60 degrees Celsius to become liquid before testing. If only one sample can be heated at a time, the heating efficiency is low, and an improperly designed heating element can lead to significant heat loss and uneven temperature rise. Furthermore, the heating element may obstruct spectral detection. This embodiment provides an automated spectral detection system for food oils, including a detection box 1, a laser (not shown), an optical fiber module 3 (optical fiber probe), a drive motor 4, a sample turntable 5, a heating element 6, and a lifting structure. The detection box 1 includes a detection cavity 11. The drive motor 4 is installed within the detection cavity 11 and rotatably connected to the sample turntable 5. The sample turntable 5 includes several placement slots 51 arranged circumferentially, each slot 51 having a light-transmitting port 52 on its side facing the center of the sample turntable 5. The optical fiber module 3 is fixedly installed within the detection cavity 11. The laser is mounted on the sample turntable 5, and the optical fiber module 3 is located within the detection cavity 11. When the light-transmitting port 52 of the sample turntable 5 rotates between the laser and the fiber optic module 3, the laser light from the laser passes through the light-transmitting port 52 and is directed to the receiving end of the fiber optic module 3. The heating element 6 is cylindrical, and its outer wall abuts against the inner wall of the placement groove 51. The heating element 6 slides up and down along the placement groove 51 via a lifting structure. When the heating element 6 rotates with the sample turntable 5 between the laser and the fiber optic module 3, the lifting structure lowers the bottom wall of the heating element 6 below the light-transmitting port 52. A heating wire is embedded in the side wall of the heating element 6. The inner wall of the heating element 6 and the bottom surface of the placement groove 51 together form a sample groove 62, which is used to place the oil sample to be tested. The operation process is as follows: The oil samples to be tested are placed into their respective sample slots 62. The heating wire is activated to heat the oil samples, and simultaneously, the drive motor 4 rotates the sample turntable 5, enabling simultaneous heating of multiple oil samples. When a sample slot 62 rotates with the sample turntable 5 to a position between the laser and the fiber optic module 3, the lifting structure lowers the heating element 6, ensuring its bottom wall is below the light-transmitting port 52. This allows the laser emitted by the laser to pass smoothly through the light-transmitting port 52 and reach the fiber optic module 3. This allows for simultaneous heating of multiple oil samples, saving heating time to some extent. The cylindrical heating element 6 shortens the path of heat application to the oil samples, reducing heat loss and ensuring uniform temperature rise along the height of the oil samples. The lifting structure ensures that the heating element 6 fully covers and heats the samples without obstructing spectral detection, thus mitigating detection interference.

[0021] Furthermore, in this embodiment, the lifting structure includes a spring 71, a lifting slide groove, a lifting guide block 73, and a lifting guide rail 74. The lifting slide groove is vertically disposed at the placement groove 51, and the shape of the lifting slide groove matches the shape of the heating element 6. The heating element 6 slides along the lifting slide groove. The lifting slide groove has an opening 72 on the side away from the center of the sample turntable 5. The lifting guide block 73 is located on the outside of the sample turntable 5 and is connected to the bottom of the heating element 6 through the opening 72. The spring 71 is located on the bottom side of the lifting slide groove. The top end of the heating element 6 abuts against the bottom of the heating element 6, and the bottom end of the spring 71 abuts against the sample turntable 5 to provide an upward elastic force for the heating element 6. The lifting guide rail 74 is fixedly installed inside the detection box 1. The lifting guide rail 74 includes a transition plate 741 and a lower plate 742 connected in sequence. The upper end of the transition plate 741 is located above the upper plate, and the lower end of the transition plate 741 is connected to the lower plate 742. When the heating element 6 rotates with the sample turntable 5 to between the laser and the fiber optic module 3, the top surface of the lifting guide block 73 abuts against the bottom surface of the upper plate. The operation process is as follows: When the drive motor 4 drives the sample turntable 5 to rotate, the lifting guide block 73 rotates synchronously with the sample turntable 5. When the heating element 6 is about to reach the detection position, the lifting guide block 73 first contacts the transition plate 741. As the sample turntable 5 continues to rotate, the lifting guide block 73 slides down along the transition plate 741, driving the heating element 6 to slide down along the lifting groove until the lifting guide block 73 abuts against the upper plate. At this time, the bottom wall of the heating element 6 descends below the light-transmitting port 52. After the detection is completed, the sample turntable 5 continues to rotate, and the lifting guide block 73 slides up along the transition plate 741. Under the elastic force of the spring 71, the heating element 6 slides up and resets along the lifting groove. This specific design of the lifting structure enables the heating element 6 to slide smoothly along the lifting groove, achieves automatic reset with the help of the spring 71, and achieves precise positioning of the heating element 6 at the detection position through the cooperation of the transition plate 741 and the upper plate, ensuring the stable operation of the heating element 6 and further improving the smoothness and reliability of the detection process.

[0022] Furthermore, in this embodiment, when the lifting guide block 73 and the lifting guide rail 74 are not in contact, the spring 71 causes the top side of the lifting guide block 73 to abut against the inner wall of the opening 72. The operation process is as follows: During the rotation of the sample turntable 5, when the lifting guide block 73 is not in contact with the lifting guide rail 74, the spring 71 is always in a compressed state. Its upward elastic force pushes the heating element 6 upward, thereby driving the lifting guide block 73 upward until the top side of the lifting guide block 73 abuts against the inner wall of the opening 72. At this time, the heating element 6 stops moving upward. This can prevent the heating element 6 from moving up and down in non-detection positions, improve the stability of the heating element 6 during the heating process, ensure the consistency of the heating environment for the oil sample, and thus improve the heating effect.

[0023] Furthermore, in this embodiment, the lifting guide block 73 has rounded corners 731 on both sides. The operation process is as follows: when the lifting guide block 73 rotates with the sample turntable 5 and comes into contact with the transition plate 741, the rounded corners 731 on both sides of the lifting guide block 73 first contact the transition plate 741. As the sample turntable 5 continues to rotate, the rounded corners 731 slide smoothly along the transition plate 741, driving the heating element 6 to rise and fall smoothly. This reduces the frictional resistance when the lifting guide block 73 contacts the transition plate 741, making the sliding of the lifting guide block 73 smoother, reducing the risk of jamming, ensuring the continuity of the lifting action of the heating element 6, and improving the stability of the system operation.

[0024] Furthermore, in this embodiment, the drive motor 4 and the sample turntable 5 are detachably connected. The operation process is as follows: when maintenance or replacement of the sample turntable 5 is required, external force is applied directly to separate the sample turntable 5 from the output end of the drive motor 4, completing the disassembly; after maintenance or replacement, the sample turntable 5 and the output end of the drive motor 4 are aligned and connected and fixed. This facilitates the disassembly and assembly of the sample turntable 5, reduces maintenance difficulty and cost, and allows for the replacement of sample turntable 5 of different specifications according to testing requirements, improving the system's versatility and maintenance convenience.

[0025] Furthermore, in this embodiment, the automated spectral detection system for food oils also includes a first magnetic block 103 and a second magnetic block 104. The first magnetic block 103 is connected to the output end of the drive motor 4, and the second magnetic block 104 is fixedly connected to the sample turntable 5. The operation process is as follows: When installing the sample turntable 5, align the second magnetic block 104 with the first magnetic block 103, and use magnetic attraction to fix them together, thus connecting the sample turntable 5 to the drive motor 4; when disassembling, apply an external force greater than the magnetic attraction force to separate the first magnetic block 103 from the second magnetic block 104, thereby completing the disassembly of the sample turntable 5. This eliminates the need for additional disassembly tools, further simplifying the disassembly and assembly process of the sample turntable 5 and the drive motor 4, and improving disassembly and assembly efficiency; at the same time, the magnetic connection method can buffer vibrations during transmission to a certain extent, improve transmission stability, and ensure the rotational stability of the sample turntable 5.

[0026] Furthermore, in this embodiment, the outer periphery of the sample turntable 5 is also provided with a disassembly notch 53. The operation process is as follows: When disassembling the sample turntable 5, insert a tool or finger into the disassembly notch 53 and apply external force in a direction away from the drive motor 4 to separate the first magnetic block 103 from the second magnetic block 104, thus completing the disassembly. This disassembly notch 53 provides a convenient force application point for the disassembly and assembly of the sample turntable 5, making it easier for operators to apply precise external force, enabling the sample turntable 5 to be quickly disassembled and assembled, reducing the risk of damage to the sample turntable 5, the first magnetic block 103, or the second magnetic block 104 during the disassembly and assembly process, and further improving the ease of disassembly and assembly.

[0027] Furthermore, in this embodiment, the automated spectral detection system for food oils also includes a spectrometer located outside the detection cavity 11 and connected to the fiber optic module 3. The operation process is as follows: During detection, the fiber optic module 3 receives the laser signal emitted by the laser that passes through the oil sample and transmits it to the spectrometer. The spectrometer analyzes and processes the signal to obtain the detection result. When maintenance and calibration of the spectrometer are required, the operation can be performed directly on the spectrometer located outside the detection cavity 11. This avoids the heat inside the detection cavity 11 affecting the performance of the spectrometer, ensuring the accuracy of the spectral analysis data. Simultaneously, the spectrometer is set up independently of the detection cavity 11, facilitating maintenance and calibration and improving the stability of the system's detection accuracy.

[0028] Furthermore, in this embodiment, a heat insulation layer 9 is provided outside the detection chamber 11. The operation process is as follows: When heating the oil sample, the heat insulation layer 9 wraps around the outside of the detection chamber 11, preventing heat from dissipating outward and maintaining a stable temperature inside the detection chamber 11. This reduces heat loss from the detection chamber 11, improves heating efficiency, and ensures temperature stability within the detection chamber 11, resulting in a more uniform heating process for the oil sample, improved heating effect, and a stable environmental condition for spectral detection.

[0029] Furthermore, in this embodiment, the top side of the detection box 1 is provided with a sample loading inlet 101, and the top side of the detection box 1 is provided with a hatch 102, which can open or close the sample loading inlet 101. The operation process is as follows: When loading the sample, open the hatch 102 to open the sample loading inlet 101, and place the oil sample to be tested into the sample slot 62 through the sample loading inlet 101; after loading, close the hatch 102 to close the sample loading inlet 101, and then perform heating and detection operations; after detection, open the hatch 102 and take out the tested sample. This design of the sample loading inlet 101 and the hatch 102 facilitates the operator in loading and removing samples, improving operational convenience; closing the hatch 102 during detection ensures the airtightness of the detection chamber 11, reduces heat loss, and blocks external light, dust, and other interfering factors from entering, improving the environmental stability of spectral detection and enhancing the reliability of detection data.

[0030] The overall operating principle of this automated spectral detection system for food oils is as follows: First, open the hatch 102 on the top side of the detection chamber 11, and place the oil sample to be tested into each sample slot 62 of the sample turntable 5 through the sample loading inlet 101. Close the hatch 102 to ensure the airtightness of the detection chamber 11. Start the heating wire in the side wall of the heating element 6 to heat the oil sample in the sample slot 62. The temperature of the oil sample is indirectly obtained by setting a temperature sensor to obtain the temperature of the heating element 6. At the same time, start the drive motor 4. The drive motor 4 drives the sample turntable 5 to rotate through the magnetic attraction of the first magnetic block 103 and the second magnetic block 104, so as to achieve simultaneous heating of multiple oil samples. In order to enable the sample turntable 5 to be heated with the temperature sensor and the heating wire while rotating, the heating wire and the temperature sensor are electrically connected to the power supply through a slip ring. The insulation layer 9 on the outside of the detection cavity 11 prevents heat loss and maintains a stable temperature inside the cavity. During the rotation of the sample turntable 5, when a sample slot 62 rotates with the sample turntable 5 to a position between the laser and the fiber optic module 3, the lifting guide block 73 rotates with the sample turntable 5 until it abuts against the upper plate of the lifting guide rail 74. Under the continuous rotation of the sample turntable 5, the lifting guide block 73 slides down along the transition plate 741, causing the heating element 6 to slide downwards along the lifting groove until the bottom wall of the heating element 6 descends below the light-transmitting port 52. At this point, the laser emitted by the laser can smoothly pass through the light-transmitting port 52 and be directed to the receiving end of the fiber optic module 3. The fiber optic module 3 transmits the received optical signal to a spectrometer located outside the detection cavity 11. The spectrometer analyzes and processes the optical signal to complete the analysis of the oil. Spectroscopic detection of lipid samples; after detection, the sample turntable 5 continues to rotate, the lifting guide block 73 detaches from the upper plate and slides upward along the transition plate 741. Under the elastic force of the spring 71, the heating element 6 slides upward and resets along the lifting groove. The top side of the lifting guide block 73 abuts against the inner wall of the light-transmitting port 52 to ensure the stability of the heating element 6. Subsequently, the next heated sample tank 62 rotates with the sample turntable 5 to the detection position, and the above detection process is repeated. When maintenance or replacement of the sample turntable 5 is required, the operator can apply external force through the disassembly notch 53 on the outer periphery of the sample turntable 5 to separate the first magnetic block 103 from the second magnetic block 104, thereby separating the sample turntable 5 from the drive motor 4. After maintenance or replacement, it can be reconnected and fixed by magnetic attraction. The entire system achieves automated, efficient, and accurate detection of oil samples through the coordinated cooperation of its components.

[0031] The preferred embodiments of the present invention have been described in detail above, but the present disclosure is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present disclosure.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

Claims

1. An automated spectroscopic detection system for food oils, characterized in that: Include: Detection box (1), laser, optical fiber module (3), drive motor (4), sample turntable (5), temperature rising part (6), lifting structure; The detection box (1) comprises a detection cavity (11); The drive motor (4) is installed in the detection cavity (11) and is in rotational connection with the sample turntable (5); The sample turntable (5) comprises a plurality of placement grooves (51) arranged along the circumferential direction, and the placement grooves (51) are provided with light passing openings (52) on the side facing the center of the sample turntable (5); The optical fiber module (3) is fixedly arranged in the detection cavity (11); The laser is installed on the sample turntable (5), the optical fiber module (3) is arranged in the detection cavity (11), and when the light passing opening (52) of the sample turntable (5) is rotated to between the laser and the optical fiber module (3), the laser of the laser passes through the light passing opening (52) and is shot to the receiving end of the optical fiber module (3); The temperature rising part (6) is in a cylindrical shape, the outer wall of the temperature rising part (6) abuts against the inner wall of the placement groove (51), the temperature rising part (6) slides up and down along the placement groove (51) through the lifting structure, when the temperature rising part (6) is rotated to between the laser and the optical fiber module (3) along with the sample turntable (5), the lifting structure makes the bottom wall of the temperature rising part (6) lower than the light passing opening (52), The sidewall of the temperature rising part (6) is embedded with a heating wire, the inner wall of the temperature rising part (6) and the bottom surface of the placement groove (51) jointly form a sample groove (62), and the sample groove (62) is used for placing the oil sample to be detected.

2. The automated spectroscopic detection system of food oil according to claim 1, characterized in that: The lifting structure comprises a spring (71), a lifting sliding groove, a lifting guide block (73), and a lifting guide rail (74), the lifting sliding groove is arranged at the placement groove (51) in the vertical direction, the shape of the lifting sliding groove matches the shape of the temperature rising part (6), the temperature rising part (6) slides along the lifting sliding groove, one side of the lifting sliding groove away from the center of the sample turntable (5) is provided with a through opening (72), the lifting guide block (73) is located outside the sample turntable (5) and is connected with the bottom of the temperature rising part (6) through the through opening (72), the spring (71) is located at the bottom side of the lifting sliding groove, the top end of the spring (71) abuts against the bottom of the temperature rising part (6), the bottom end of the spring (71) abuts against the sample turntable (5) to provide upward elastic force for the temperature rising part (6), the lifting guide rail (74) is fixedly arranged in the detection box (1), the lifting guide rail (74) comprises a transition plate (741) and a lower plate (742) connected in sequence, the upper end of the transition plate (741) is located above the upper plate, and the lower end of the transition plate (741) is connected with the lower plate (742), when the temperature rising part (6) is rotated to between the laser and the optical fiber module (3) along with the sample turntable (5), the top surface of the lifting guide block (73) abuts against the bottom surface of the upper plate.

3. The automated spectroscopic detection system of food oil according to claim 2, characterized in that: When the lifting guide block (73) and the lifting guide rail (74) are not in contact with each other, the spring (71) makes the top side of the lifting guide block (73) abut against the inner wall of the through hole (72).

4. The automated spectroscopic detection system of food oil according to claim 3, characterized in that: Two sides of the lifting guide block (73) are provided with round corners (731).

5. The automated spectroscopic detection system of food oil according to claim 1, characterized in that: The driving motor (4) is detachably connected with the sample turntable (5).

6. The automated spectroscopic detection system of food oil according to claim 5, characterized in that: The automatic spectral detection system of the food grease further comprises a first magnetic attraction block (103) and a second magnetic attraction block (104), the first magnetic attraction block (103) is drivingly connected with the output end of the motor (4), and the second magnetic attraction block (104) is fixedly connected with the sample turntable (5).

7. The automated spectroscopic detection system of food oil according to claim 1, characterized in that: The outer periphery of the sample turntable (5) is further provided with a dismounting gap (53).

8. The automated spectroscopic detection system of food oil according to claim 1, characterized in that: The automatic spectral detection system of the food grease further comprises a spectral analyzer (8), the spectral analyzer (8) is located outside the detection cavity (11), and the spectral analyzer (8) is signal-connected with the optical fiber module (3).

9. The automated spectroscopic detection system of food oil according to claim 1, characterized in that: An insulation layer (9) is arranged outside the detection cavity (11).

10. The automated spectroscopic detection system of food oil according to claim 1, characterized in that: A sample loading port (101) is arranged on the top side of the detection box (1), a hatch (102) is arranged on the top side of the detection box (1), and the hatch (102) opens or closes the sample loading port (101). An insulation layer (9) is arranged outside the detection cavity (11). A sample loading port (101) is arranged on the top side of the detection box (1), a hatch (102) is arranged on the top side of the detection box (1), and the hatch (102) opens or closes the sample loading port (101).

Images