A rapid detection device and detection method for the content of trans fatty acid isomers in edible oil

Abstract

The present invention discloses a rapid detection device and a detection method for the content of trans fatty acid isomers in edible oil, which relates to the technical field of edible oil detection. It includes a rapid detection frame arranged on the top of the ground. A rapid detection rod is fixedly installed on the inner wall of the rapid detection frame. An I-shaped frame is slidably installed on the circumferential surface of the rapid detection rod. A culture dish is arranged at the top of the rear side of the I-shaped frame. A moving groove is opened at the top of the rapid detection frame, and a moving hole is opened at the top of the rapid detection frame. A moving frame is slidably installed on the inner wall of the moving groove; an infrared spectrometer, the infrared spectrometer fixedly penetrates through the top of the moving frame. Under the action of the frictional force of the arc-shaped sheet itself, the I-shaped frame can only slowly move backward. The slow backward movement of the I-shaped frame drives the culture dish to slowly move backward. The stable movement can prevent the culture dish from shaking and thus ensure the stability of the optical path, improving the resolution of the detection of the content of trans fatty acid isomers in the sample.

Description

Technical Field

[0001] The present invention relates to the technical field of edible oil detection, and particularly to a rapid detection device and method for the content of trans fatty acid isomers in edible oil. Background Art

[0002] The rapid detection device for the content of trans fatty acid isomers in edible oil generally consists of a rapid detection frame, a culture dish, an infrared spectrometer, a sealing device and other parts.

[0003] The patent with the patent announcement number CN103940774B relates to an edible oil detection device and method. The edible oil detection device includes: a sealed housing; an infrared light source that emits infrared light towards the bottom of the sealed housing; an infrared detector that is disposed opposite to the infrared light source and is used to detect the infrared light emitted by the infrared light source; an oil carrier disposed between the infrared light source and the infrared detector, including at least one groove for accommodating oil; a printed circuit board disposed at the bottom of the sealed housing and electrically connected to the infrared detector, and processes the output signal of the infrared detector through electronic components thereon; a data display disposed on the upper surface of the sealed housing and used to display the detection result information of the edible oil. The edible oil detection device and method simplify the process of edible oil detection and reduce the cost of edible oil detection.

[0004] In the above patent, although the process of edible oil detection is simplified and the cost of edible oil detection is reduced, it is difficult to prevent the sample in the culture dish from shaking during the detection process. The shaking of the sample will change the position of the sample in the optical path, resulting in changes in the path length and angle of the infrared light passing through the sample. Since infrared spectroscopy detection is based on the absorption characteristics of the sample for infrared light with a specific wavelength for quantitative analysis, the change in the optical path will cause the absorption optical path to be inconsistent, thereby causing an absorbance measurement error and ultimately affecting the detection accuracy of the content of trans fatty acid isomers in the sample. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a rapid detection device and method for the content of trans fatty acid isomers in edible oil, and solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: A rapid detection device for the content of trans fatty acid isomers in edible oil, including a rapid detection frame, the rapid detection frame is arranged on the top of the ground, a rapid detection rod is fixedly installed on the inner wall of the rapid detection frame, an I-shaped frame is slidably installed on the circumferential surface of the rapid detection rod, a culture dish is arranged at the top rear side of the I-shaped frame, a moving groove is opened on the top of the rapid detection frame, a moving hole is opened on the top of the rapid detection frame, and a moving frame is slidably installed on the inner wall of the moving groove; an infrared spectrometer, the infrared spectrometer fixedly penetrates through the top of the moving frame, and the infrared spectrometer is used for detecting the content of trans fat in edible oil; a display screen, the display screen is fixedly installed on the right side of the rapid detection frame, and the display screen is electrically connected to the infrared spectrometer; an arc-shaped piece, the arc-shaped piece is fixedly installed on the circumferential surface of the rapid detection rod, and the arc-shaped piece is used for restricting the moving speed of the I-shaped frame; an arc-shaped groove, the arc-shaped groove is opened on the rear side of the I-shaped frame, and the moving frame is used for supporting the infrared spectrometer; a multi-sided rod is fixedly installed on the right side of the rapid detection frame, a limiting plate is slidably installed on the circumferential surface of the multi-sided rod, a limiting groove is opened on the front side of the I-shaped frame, and the arc-shaped groove makes the I-shaped frame can only slowly move backward under the action of the self-friction force of the arc-shaped piece.

[0007] According to the above technical solution, a first spring is arranged between the I-shaped frame and the rapid detection frame. When the I-shaped frame moves towards the direction close to the display screen, the first spring is extruded. The first spring deforms under the extrusion force of the I-shaped frame. After the limiting plate moves to the right and disengages from the contact with the limiting groove, the I-shaped frame can be driven to reset by the first spring. The I-shaped frame contacts with the inner wall of the rapid detection frame. The material of the arc-shaped piece is polyurethane, and the friction force between the arc-shaped piece and the arc-shaped groove can be increased through the lower limb of polyurethane.

[0008] According to the above technical solution, a second spring is arranged between the limiting plate and the rapid detection frame. When the limiting plate moves to the right, the second spring is pulled. The second spring deforms and stores energy under the pulling force of the limiting plate. When the limiting plate is aligned with the limiting groove, the limiting plate can be driven to return to the initial position by the second spring. The limiting plate abuts against the right side of the I-shaped frame. The moving frame contacts with the top of the rapid detection frame. When the limiting plate moves to the left, it contacts with the inner wall of the limiting groove and limits the I-shaped frame.

[0009] According to the above technical solution, a protection component for isolating water vapor is arranged on the inner wall of the rapid detection frame, and a light-shielding component is arranged on the inner wall of the moving hole. The protection component includes an elastic telescopic rod, a shielding plate, a shielding groove and a connecting rod. When the shielding plate moves backward and disengages from the contact with the bottom of the infrared spectrometer and releases the shielding of the bottom of the infrared spectrometer. The elastic telescopic rod is fixedly installed on the inner wall of the rapid detection frame. The shielding plate is fixedly installed at the free end of the elastic telescopic rod. The shielding groove is opened on the top of the shielding plate. The connecting rod slidably penetrates through the top of the moving frame.

[0010] According to the above technical solution, a connecting plate is fixedly installed on the top of the connecting rod, and a reset spring is arranged between the connecting plate and the movable frame. The connecting plate moves upward to apply a pulling force to the reset spring, and the reset spring is deformed by the pulling of the connecting plate. When the connecting rod is aligned with the left connecting groove, the reset spring can drive the connecting plate to restore its initial position. A connecting groove is opened on the top of the quick inspection frame, and a protective ring is fixedly installed on the circumferential surface of the infrared spectrometer, and the circumferential surface of the infrared spectrometer can be protected by the protective ring.

[0011] According to the above technical solution, the connecting rod contacts the connecting groove, the top of the shielding plate contacts the infrared spectrometer, the shielding plate material is polyurethane foam, the connecting rod moves downward to contact the inner wall of the left connecting groove and automatically restores the limit of the movable frame.

[0012] According to the above technical solution, the shading assembly includes a connecting hole, a shading rod, a shading plate, a replica rod and a replica plate. The shading plate cooperates with the replica plate to always seal the movable hole. The connecting hole is opened on the left and right walls of the quick inspection frame. The shading rod slides through the left side of the quick inspection frame. The shading plate is fixedly installed on the circumferential surface of the shading rod. The replica rod slides through the right side of the quick inspection frame. The replica plate is fixedly installed on the circumferential surface of the replica rod.

[0013] According to the above technical solution, a light-shielding spring is arranged between the light-shielding plate and the quick inspection frame. The light-shielding plate moves to the left to squeeze the light-shielding spring. The light-shielding spring is squeezed by the light-shielding plate to produce deformation and accumulate force. When the connecting rod moves upward and disengages from the connecting groove, the light-shielding plate can be driven to reset by the light-shielding spring. A replica spring is arranged between the replica plate and the quick inspection frame. The replica plate can be supported by the replica spring. The light-shielding plate contacts the top of the inner wall of the quick inspection frame. The light-shielding spring and the replica spring have the same elastic coefficient, so that the replica plate and the light-shielding plate can always fit the protective ring.

[0014] According to the above technical solution, the replica plate contacts the top of the inner wall of the quick inspection frame, the shading plate abuts against the protective ring, the replica plate abuts against the protective ring, and the replica plate moves to the left under the elastic force of the replica spring.

[0015] A detection method of a rapid detection device for the content of trans fatty acid isomers in edible oil, using the above-mentioned rapid detection device for the content of trans fatty acid isomers in edible oil, comprises the following steps:

[0016] Step 1: Place the pretreated edible oil samples inside the culture dish and place them on the top of the I-shaped rack at intervals;

[0017] Step 2: After the culture dishes are placed at intervals on the top of the I-shaped frame, the I-shaped frame is manually pushed to move toward the display screen. The movement of the I-shaped frame toward the display screen will align the limit plate with the limit groove;

[0018] Step 3: After the limit plate is aligned with the limit groove, the limit plate moves to the left under the elastic force of the second spring, and the limit plate moves to the left to contact the inner wall of the limit groove and limit the I-shaped frame;

[0019] Step 4: After the sample inside the culture dish is aligned with the infrared spectrometer, start the infrared spectrometer to detect the trans fatty acid isomer content of the sample inside the culture dish, and the trans fatty acid isomer content of the sample is directly displayed on the display screen.

[0020] The present invention provides a rapid detection device for the content of trans fatty acid isomers in edible oil. The device has the following beneficial effects:

[0021] (1) In the present invention, the limiting plate moves to the left to contact the inner wall of the limiting groove and limit the I-shaped frame. The I-shaped frame is limited by the limiting plate and cannot move freely back and forth during the detection process. The limiting of the I-shaped frame can prevent the I-shaped frame and the culture dish from colliding during the detection process, thereby avoiding damage to the probe and other precision parts of the infrared spectrometer. Through the arc groove, the I-shaped frame can only move slowly to the rear side under the action of the friction force of the arc plate itself. The slow movement of the I-shaped frame to the rear side drives the culture dish to move slowly to the rear side. The stable movement can prevent the culture dish from shaking and thus ensure the stability of the optical path, thereby improving the resolution of the detection of the trans fatty acid isomer content of the sample.

[0022] (2) In the present invention, by moving the baffle plate backward to break away from the contact with the bottom of the infrared spectrometer and release the shielding of the bottom of the infrared spectrometer, water vapor will cause fog condensation on the surface of the lens, resulting in abnormal light scattering or refraction, thereby affecting the transmission and detection of infrared light by the infrared spectrometer. The baffle plate prevents water vapor from adhering, so that the infrared spectrometer can accurately collect the spectral information of the edible oil sample, thereby improving the accuracy of the detection of trans fatty acid isomer content.

[0023] (3) In this invention, the connecting rod moves downward to contact the inner wall of the left connecting groove and automatically restores the limit of the movable frame. When manually aligning the culture dish and the infrared spectrometer, it is difficult to ensure that the alignment is accurate every time. By automatically aligning the culture dish, the influence of human factors is eliminated, thereby achieving high-precision alignment and improving the stability of the detection results.

[0024] (4) The invention restores the interference with the protective ring by moving the replica plate to the left. The shading plate cooperates with the replica plate to seal the moving hole all the time. The shading plate cooperates with the replica plate to seal the moving hole, which can effectively block external light and ensure that only infrared light passing through the sample is received by the infrared spectrometer, thereby helping to improve the accuracy of the test results.

[0025] (5)In this invention, the replica plate moves to the left under the elastic force of the replica spring. When the replica plate moves to the left, it resumes contact with the protective ring. By contacting the protective ring with the replica plate, it can prevent particulate impurities such as hair or fibers from contacting the sample, thus ensuring the purity of the sample, avoiding cross - contamination, and improving the authenticity of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the semi - sectional structure of the quick - detection frame of the present invention;

[0028] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of part A in it;

[0029] Figure 4 It is a schematic diagram of the internal structure of the quick - detection frame of the present invention;

[0030] Figure 5 It is a schematic diagram of the positional structure of the I - shaped frame and the culture dish of the present invention;

[0031] Figure 6 It is a schematic diagram of the positional structure of the multi - sided rod and the limiting plate of the present invention;

[0032] Figure 7 It is a schematic diagram of the positional structure of the light - shielding rod and the light - shielding plate of the present invention.

[0033] In the figure: 1. Quick - detection frame; 2. Quick - detection rod; 3. I - shaped frame; 4. Culture dish; 5. Moving groove; 6. Moving hole; 7. Moving frame; 8. Infrared spectrometer; 9. Display screen; 10. Arc - shaped piece; 11. Arc - shaped groove; 12. Multi - sided rod; 13. Limiting plate; 14. Limiting groove; 151. Elastic telescopic rod; 152. Shading plate; 153. Shading groove; 154. Connecting rod; 155. Connecting plate; 156. Return spring; 157. Connecting groove; 158. Protective ring; 161. Communication hole; 162. Light - shielding rod; 163. Light - shielding plate; 164. Light - shielding spring; 165. Replica rod; 166. Replica plate; 167. Replica spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

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

[0035] Please refer to Figures 1-6, one embodiment of the present invention is: a rapid detection device for the trans fatty acid isomer content of edible oil, comprising a rapid inspection frame 1, the rapid inspection frame 1 is arranged on the top of the ground, a rapid inspection rod 2 is fixedly installed on the inner wall of the rapid inspection frame 1, a work-shaped frame 3 is slidably installed on the circumferential surface of the rapid inspection rod 2, a culture dish 4 is arranged on the top of the rear side of the work-shaped frame 3, a moving groove 5 is opened on the top of the rapid inspection frame 1, a moving hole 6 is opened on the top of the rapid inspection frame 1, and a moving frame 7 is slidably installed on the inner wall of the moving groove 5; an infrared spectrometer 8, the infrared spectrometer 8 is fixedly passed through the top of the moving frame 7, and the infrared spectrometer 8 is used to detect the trans fat content of edible oil; a display screen 9, the display screen 9 is fixedly installed on the right side of the rapid inspection frame 1, and displays The screen 9 is electrically connected to the infrared spectrometer 8; the arc-shaped piece 10 is fixedly mounted on the circumferential surface of the quick-test rod 2, and the arc-shaped piece 10 is used to limit the moving speed of the I-shaped frame 3; the arc-shaped groove 11 is arranged on the rear side of the I-shaped frame 3, and the movable frame 7 is used to support the infrared spectrometer 8; a polygonal rod 12 is fixedly mounted on the right side of the quick-test frame 1, and a limit plate 13 is slidably mounted on the circumferential surface of the polygonal rod 12, and a limit groove 14 is arranged on the front side of the I-shaped frame 3. The I-shaped frame 3 moves slowly toward the rear side, driving the culture dish 4 to move slowly toward the rear side. The stable movement can prevent the culture dish 4 from shaking, thereby ensuring the stability of the optical path and improving the resolution of the detection of the trans fatty acid isomer content of the sample.

[0036] A spring 1 is arranged between the I-shaped frame 3 and the quick inspection frame 1. The I-shaped frame 3 moves toward the direction close to the display screen 9 to squeeze the spring 1. The spring 1 is deformed by the squeezing force of the I-shaped frame 3. After the limit plate 13 moves to the right and breaks away from the contact with the limit groove 14, the I-shaped frame 3 can be driven to reset by the spring 1. The I-shaped frame 3 contacts the inner wall of the quick inspection frame 1. The arc sheet 10 is made of polyurethane, and the friction between the arc sheet 10 and the arc groove 11 can be increased by the polyurethane lower limb.

[0037] A second spring is arranged between the limit plate 13 and the quick inspection frame 1. The limit plate 13 moves to the right to pull the second spring. The second spring is deformed and stored by the pulling of the limit plate 13. When the limit plate 13 is aligned with the limit groove 14, the limit plate 13 can be driven by the second spring to restore the initial position. The limit plate 13 contacts the right side of the I-shaped frame 3, and the mobile frame 7 contacts the top of the quick inspection frame 1. The limit plate 13 moves to the left to contact the inner wall of the limit groove 14 and limit the I-shaped frame 3. The limitation of the I-shaped frame 3 can prevent the I-shaped frame 3 and the culture dish 4 from colliding during the detection process, thereby avoiding damage to precision components such as the probe of the infrared spectrometer 8.

[0038] A detection method of a rapid detection device for the content of trans fatty acid isomers in edible oil, using the above-mentioned rapid detection device for the content of trans fatty acid isomers in edible oil, comprises the following steps:

[0039] Step 1: Place the pre-treated edible oil sample inside the petri dish 4 and arrange them at intervals on top of the I-shaped frame 3;

[0040] Step 2: After the petri dishes 4 are arranged at intervals on top of the I-shaped frame 3, manually push the I-shaped frame 3 in the direction towards the display screen 9. Moving the I-shaped frame 3 in the direction towards the display screen 9 will align the limiting plate 13 with the limiting groove 14;

[0041] Step 3: After the limiting plate 13 is aligned with the limiting groove 14, the limiting plate 13 moves to the left under the elastic force of the second spring. The limiting plate 13 moves to the left and contacts the inner wall of the limiting groove 14 to limit the I-shaped frame 3;

[0042] Step 4: After the sample inside the petri dish 4 is aligned with the infrared spectrometer 8, start the infrared spectrometer 8 to detect the content of trans fatty acid isomers in the sample inside the petri dish 4. The content of trans fatty acid isomers in the sample is directly displayed on the display screen 9.

[0043] During the operation of this embodiment: Place the pre-treated edible oil sample inside the petri dish 4 and arrange them at intervals on top of the I-shaped frame 3. After the petri dishes 4 are arranged at intervals on top of the I-shaped frame 3, manually push the I-shaped frame 3 in the direction towards the display screen 9. Moving the I-shaped frame 3 in the direction towards the display screen 9 will align the limiting plate 13 with the limiting groove 14. After the limiting plate 13 is aligned with the limiting groove 14, the limiting plate 13 moves to the left under the elastic force of the second spring. The limiting plate 13 moves to the left and contacts the inner wall of the limiting groove 14 to limit the I-shaped frame 3. The I-shaped frame 3 is restricted by the limiting plate 13 and cannot move back and forth freely. At the same time, when the I-shaped frame 3 moves in the direction towards the display screen 9, the arc-shaped groove 11 will contact the arc-shaped piece 10. Due to the frictional force of the arc-shaped piece 10 itself, the I-shaped frame 3 can only move slowly towards the rear side. The slow movement of the I-shaped frame 3 towards the rear side drives the petri dish 4 to move slowly towards the rear side. After the sample inside the petri dish 4 is aligned with the infrared spectrometer 8, start the infrared spectrometer 8 to detect the content of trans fatty acid isomers in the sample inside the petri dish 4. The content of trans fatty acid isomers in the sample is directly displayed on the display screen 9. When it is necessary to detect the next batch of samples, manually pull the limiting plate 13 to move to the right. The limiting plate 13 moves to the right and disengages from the contact with the limiting groove 14 to release the restriction on the I-shaped frame 3. After the restriction on the I-shaped frame 3 is released, the I-shaped frame 3 moves forward and resets under the elastic force of the first spring. The forward movement and reset of the I-shaped frame 3 ejects the petri dish 4 and at the same time manually replaces the petri dish 4.

[0044] Please refer to Figures 1-7, based on the above embodiments, in the left-side embodiment of the present invention, a protection component for blocking water vapor is provided on the inner wall of the quick inspection frame 1, and a light-shielding component is provided on the inner wall of the moving hole 6. The protection component includes an elastic telescopic rod 151, a shielding plate 152, a shielding groove 153, and a connecting rod 154. The elastic telescopic rod 151 is fixedly installed on the inner wall of the quick inspection frame 1, the shielding plate 152 is fixedly installed at the free end of the elastic telescopic rod 151, the shielding groove 153 is opened at the top of the shielding plate 152, and the connecting rod 154 slidably penetrates through the top of the moving frame 7. By means of the shielding plate 152, water vapor adhesion is prevented, enabling the infrared spectrometer 8 to accurately collect the spectral information of the edible oil sample, thereby improving the accuracy of the trans fatty acid isomer content detection.

[0045] A connecting plate 155 is fixedly installed at the top of the connecting rod 154. A return spring 156 is provided between the connecting plate 155 and the moving frame 7. When the connecting plate 155 moves upward, a pulling force is applied to the return spring 156, and the return spring 156 deforms under the pull of the connecting plate 155. When the connecting rod 154 is aligned with the left connecting groove 157, the return spring 156 can drive the connecting plate 155 to return to its initial position. A connecting groove 157 is opened at the top of the quick inspection frame 1, and a protection ring 158 is fixedly installed on the circumferential surface of the infrared spectrometer 8. The circumferential surface of the infrared spectrometer 8 can be protected by means of the protection ring 158.

[0046] The connecting rod 154 contacts the connecting groove 157, and the top of the shielding plate 152 contacts the infrared spectrometer 8. The material of the shielding plate 152 is polyurethane foam. The infrared spectrometer 8 can be prevented from being scratched by the polyurethane foam material. When the connecting rod 154 moves downward, it contacts the inner wall of the left connecting groove 157 and automatically resumes the limit on the moving frame 7. By automatically aligning the culture dish 4, the influence of human factors is eliminated, thereby achieving high-precision alignment and improving the stability of the detection results.

[0047] The light-shielding component includes a communication hole 161, a light-shielding rod 162, a light-shielding plate 163, a replica rod 165, and a replica plate 166. The communication hole 161 is opened on the left and right walls of the quick inspection frame 1. The light-shielding rod 162 slidably penetrates through the left side of the quick inspection frame 1. The light-shielding plate 163 is fixedly installed on the circumferential surface of the light-shielding rod 162. The replica rod 165 slidably penetrates through the right side of the quick inspection frame 1. The replica plate 166 is fixedly installed on the circumferential surface of the replica rod 165. The light-shielding plate 163 cooperates with the replica plate 166 to seal the moving hole 6, effectively blocking external light and ensuring that only the infrared light passing through the sample is received by the infrared spectrometer 8, thereby assisting in improving the accuracy of the detection results.

[0048] A shading spring 164 is arranged between the shading plate 163 and the quick inspection frame 1. The shading plate 163 moves to the left to squeeze the shading spring 164. The shading spring 164 is squeezed by the shading plate 163 to produce deformation and accumulate force. When the connecting rod 154 moves upward and disengages from the connecting groove 157, the shading plate 163 can be driven to reset by the shading spring 164. A replica spring 167 is arranged between the replica plate 166 and the quick inspection frame 1. The replica plate 166 can be supported by the replica spring 167. The shading plate 163 contacts the top of the inner wall of the quick inspection frame 1. The elastic coefficient of the shading spring 164 and the replica spring 167 is the same, so that the replica plate 166 and the shading plate 163 can always fit the protective ring 158.

[0049] The replica plate 166 contacts the top of the inner wall of the quick test frame 1, the shading plate 163 contacts the protective ring 158, the replica plate 166 contacts the protective ring 158, and the replica plate 166 moves to the left under the elastic force of the replica spring 167. The contact between the replica plate 166 and the protective ring 158 can prevent particulate impurities such as hair or fiber from contacting the sample, thereby ensuring the purity of the sample, avoiding cross contamination, and improving the authenticity of the test.

[0050] When the present embodiment is working, the work-shaped frame 3 moves toward the direction close to the display screen 9, contacts the bottom of the shielding plate 152 and squeezes the shielding plate 152. The shielding plate 152 is squeezed by the work-shaped frame 3 and moves backward. The shielding plate 152 moves backward to squeeze the free end of the elastic telescopic rod 151. The free end of the elastic telescopic rod 151 is squeezed and retracted by the shielding plate 152 and accumulates force. At the same time, the shielding plate 152 moves backward to break away from the contact with the bottom of the infrared spectrometer 8 and releases the shielding of the bottom of the infrared spectrometer 8. After the shielding of the bottom of the infrared spectrometer 8 is released, when the sample inside the left culture dish 4 is tested, it is necessary to manually pull the connecting plate 155 upward. The upward movement of the connecting plate 155 drives the connecting rod 154 to move upward. The connecting rod 154 moves upward to break away from the bottom of the infrared spectrometer 8. The movable rack 7 is manually pushed to move to the left, and the movement of the movable rack 7 drives the infrared spectrometer 8 and the protective ring 158 to move horizontally to the left. When the infrared spectrometer 8 is aligned with the left culture dish 4, the connecting rod 154 is just aligned with the left connecting groove 157. When the connecting rod 154 is aligned with the left connecting groove 157, the connecting plate 155 moves downward and resets under the elastic force of the reset spring 156. The connecting plate 155 moves downward and resets, driving the connecting rod 154 to move downward. The connecting rod 154 moves downward and contacts the inner wall of the left connecting groove 157 and automatically restores the limit of the movable rack 7, thereby facilitating the infrared spectrometer 8 to detect the sample inside the left culture dish 4.

[0051] The protective ring 158 moves horizontally to the left and contacts with the shading plate 163 and squeezes the shading plate 163. The shading plate 163 is squeezed by the protective ring 158 and moves to the left. The protective ring 158 moves horizontally to the left and will be out of contact with the replica plate 166. After the replica plate 166 is out of contact with the protective ring 158, the replica plate 166 moves to the left under the elastic force of the replica spring 167. The replica plate 166 moves to the left to restore the contact with the protective ring 158. The shading plate 163 cooperates with the replica plate 166 to always seal the movable hole 6. After the sample detection inside the culture dish 4 is completed, the shading plate 163 moves to the right and resets under the elastic force of the shading spring 164. The shading plate 163 moves to the right and resets to squeeze the protective ring 158 to move and reset. The movement and reset of the protective ring 158 drives the infrared spectrometer 8 to move and restore to its initial position.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid detection device for the content of trans fatty acid isomers in edible oil, characterized in that: It includes a rapid detection frame (1) which is arranged on the top of the ground. A rapid detection rod (2) is fixedly installed on the inner wall of the rapid detection frame (1). An I-shaped frame (3) is slidably installed on the circumferential surface of the rapid detection rod (2). A culture dish (4) is arranged at the top of the rear side of the I-shaped frame (3). A moving groove (5) is opened at the top of the rapid detection frame (1), and a moving hole (6) is opened at the top of the rapid detection frame (1). A moving frame (7) is slidably installed on the inner wall of the moving groove (5); An infrared spectrometer (8) which is fixedly penetrated through the top of the moving frame (7) and is used for detecting the content of trans fat in edible oil; A display screen (9) which is fixedly installed on the right side of the rapid detection frame (1) and is electrically connected with the infrared spectrometer (8); An arc-shaped piece (10) which is fixedly installed on the circumferential surface of the rapid detection rod (2) and is used for restricting the moving speed of the I-shaped frame (3); An arc-shaped groove (11) which is opened at the rear side of the I-shaped frame (3), and the moving frame (7) is used for supporting the infrared spectrometer (8); A multi-sided rod (12) is fixedly installed on the right side of the rapid detection frame (1). A limiting plate (13) is slidably installed on the circumferential surface of the multi-sided rod (12). A limiting groove (14) is opened at the front side of the I-shaped frame (3); A first spring is arranged between the I-shaped frame (3) and the rapid detection frame (1). The I-shaped frame (3) contacts with the inner wall of the rapid detection frame (1). The material of the arc-shaped piece (10) is polyurethane. A protection component for blocking water vapor is arranged on the inner wall of the rapid detection frame (1), and a light-shielding component is arranged on the inner wall of the moving hole (6); A second spring is arranged between the limiting plate (13) and the rapid detection frame (1). The limiting plate (13) abuts against the right side of the I-shaped frame (3), and the moving frame (7) contacts with the top of the rapid detection frame (1); The protection component includes an elastic telescopic rod (151), a shielding plate (152), a shielding groove (153) and a connecting rod (154). The elastic telescopic rod (151) is fixedly installed on the inner wall of the rapid detection frame (1). The shielding plate (152) is fixedly installed at the free end of the elastic telescopic rod (151). The shielding groove (153) is opened at the top of the shielding plate (152). The connecting rod (154) slidably penetrates through the top of the moving frame (7); The light-shielding component includes a communication hole (161), a light-shielding rod (162), a light-shielding plate (163), a reproduction rod (165) and a reproduction plate (166). The communication hole (161) is opened on the left and right walls of the rapid detection frame (1). The light-shielding rod (162) slidably penetrates through the left side of the rapid detection frame (1). The light-shielding plate (163) is fixedly installed on the circumferential surface of the light-shielding rod (162). The reproduction rod (165) slidably penetrates through the right side of the rapid detection frame (1). The reproduction plate (166) is fixedly installed on the circumferential surface of the reproduction rod (165).

2. The rapid detection device for the content of trans fatty acid isomers in edible oil according to claim 1, wherein: A connecting plate (155) is fixedly installed at the top of the connecting rod (154). A return spring (156) is arranged between the connecting plate (155) and the moving frame (7). A connecting groove (157) is formed at the top of the quick inspection frame (1). A protective ring (158) is fixedly installed on the circumferential surface of the infrared spectrometer (8).

3. The rapid detection device for the content of trans fatty acid isomers in edible oil according to claim 2, characterized in that: The connecting rod (154) is in contact with the connecting groove (157). The top of the baffle plate (152) is in contact with the infrared spectrometer (8). The material of the baffle plate (152) is polyurethane foam.

4. The rapid detection device for the content of trans fatty acid isomers in edible oil according to claim 3, wherein: A light-shielding spring (164) is arranged between the light-shielding plate (163) and the quick inspection frame (1). A reproduction spring (167) is arranged between the reproduction plate (166) and the quick inspection frame (1). The light-shielding plate (163) is in contact with the top inner wall of the quick inspection frame (1).

5. The rapid detection device for the content of trans fatty acid isomers in edible oil according to claim 4, characterized in that: The reproduction plate (166) is in contact with the top inner wall of the quick inspection frame (1). The light-shielding plate (163) abuts against the protective ring (158). The reproduction plate (166) abuts against the protective ring (158).

6. A detection method for the content of trans fatty acid isomers in edible oil, using the rapid detection device for the content of trans fatty acid isomers in edible oil described in claim 5, characterized in that, It includes the following steps: Step 1: Place the pretreated edible oil samples in the culture dish (4) and arrange them at intervals on the top of the I-shaped frame (3); Step 2: After the culture dishes (4) are arranged at intervals on the top of the I-shaped frame (3), manually push the I-shaped frame (3) to move towards the direction close to the display screen (9). The movement of the I-shaped frame (3) towards the direction close to the display screen (9) will make the limiting plate (13) align with the limiting groove (14); Step 3: After the limiting plate (13) aligns with the limiting groove (14), the limiting plate (13) moves to the left under the elastic force of the second spring. The limiting plate (13) moves to the left and contacts the inner wall of the limiting groove (14) to limit the I-shaped frame (3); Step 4: After the samples in the culture dish (4) align with the infrared spectrometer (8), start the infrared spectrometer (8) to detect the content of trans fatty acid isomers in the samples in the culture dish (4). The content of trans fatty acid isomers in the samples is directly displayed on the display screen (9).

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