Agricultural product drug residue detection device based on Raman spectrum

Abstract

The utility model discloses an agricultural product drug residue detection device based on Raman spectrum, and relates to the field of detection devices. The device comprises a full-spectrum pesticide residue detector main body, a detection bin arranged on the top end face of the full-spectrum pesticide residue detector main body, a detection groove formed in the detection bin and used for supporting a detection tube, and a bin cover rotationally connected with a bin opening of the detection bin. According to the agricultural product pesticide residue detection device based on the Raman spectrum, the feeding mechanism is arranged on the top end surface of the bin cover, so that an agricultural product detection sample can be directly added into a detection tube under the condition that the detection tube containing the agricultural product detection sample is not taken out; the pesticide content in agricultural product detection samples of different quantities can be conveniently detected, the feeding mechanism can meet the stable feeding requirements of detection tubes of different sizes through the arranged positioning mechanism, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a device for detecting drug residues in agricultural products based on Raman spectroscopy. Background Art

[0002] In the prior art, a full-spectrum pesticide residue detector is used to detect the drug content in agricultural products. The spectrum obtained after the test is then compared with the Raman spectrum of agricultural products without drug residues prepared in advance. Agricultural products with drug residues have rich Raman image characteristic frequencies.

[0003] However, when the full-spectrum pesticide residue detector is used to detect drug content in different amounts of agricultural product samples, the overall detection steps are relatively cumbersome.

[0004] The main reason for the above problems is that, currently, a certain amount of agricultural product test samples will be added to the test tube, and then the test tube will be inserted into the test slot opened on the full-spectrum pesticide residue detector. However, when it is necessary to test the drug content in different amounts of samples of the same agricultural product, it is necessary to first take out the test tube from the inside of the test slot, and then add the required amount of agricultural product test samples to the inside of the test tube, and then insert the test tube into the test slot. The overall loading steps are cumbersome, and the test tube is taken out multiple times, which can easily cause impurities in the external environment to enter the inside of the test tube, causing the sample inside the test tube to mutate, affecting the accuracy of the test results. To address the above problems, we propose an agricultural product drug residue detection device based on Raman spectroscopy. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a detection device, which solves the problem that the overall detection steps are relatively complicated when a full-spectrum pesticide residue detector is used to detect the drug content in different amounts of agricultural product test samples.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a drug residue detection device for agricultural products based on Raman spectroscopy, comprising a full-spectrum pesticide residue detector body, a detection chamber arranged on the top end surface of the full-spectrum pesticide residue detector body, a detection slot provided inside the detection chamber for supporting the detection tube, and a chamber cover rotatably connected to the chamber opening of the detection chamber, a feeding mechanism is arranged on the top end surface of the chamber cover, and the feeding mechanism comprises:

[0007] An injection cylinder is connected to the chamber cover, one end of which passes through the chamber cover and corresponds to the detection slot;

[0008] A push rod is slidably disposed on the inner wall of the syringe, and is used to assist the test sample in the syringe to be loaded into the test tube;

[0009] A support seat is arranged on the top end surface of the chamber cover, and the support seat is used to support the injection cylinder. The top end surface of the support seat is provided with a positioning mechanism for positioning the injection cylinder.

[0010] Preferably, the top outer wall of the injection barrel is provided with an ear plate.

[0011] Preferably, the positioning mechanism comprises:

[0012] A threaded rod, which is fixedly connected to the top end surface of the support seat, and the ear plate is sleeved on the outer wall of the threaded rod;

[0013] A positioning plate connected to the outer wall of the threaded rod, the positioning plate being used to position the syringe relative to the detection slot;

[0014] The first threaded ring and the second threaded ring are threadably sleeved on the outer wall of the threaded rod, and the first threaded ring and the second threaded ring are used for locking the positioning plate and the threaded rod.

[0015] Preferably, a bearing is fixedly connected to the bottom end surface of the positioning plate, and one end of the first threaded ring is fixedly connected to the inner wall of the bearing.

[0016] Preferably, a magnetic block is fixedly connected to the bottom end surface of the ear plate, and the magnetic block is magnetically attracted to the top end surface of the positioning plate.

[0017] Preferably, a scale is fixedly connected to the top end surface of the support seat.

[0018] Preferably, a display screen is provided on the top end surface of the main body of the full-spectrum pesticide residue detector.

[0019] The utility model discloses a device for detecting drug residues in agricultural products based on Raman spectroscopy, which has the following beneficial effects: the device for detecting drug residues in agricultural products based on Raman spectroscopy, by arranging a feeding mechanism on the top end face of a bin cover, can directly add agricultural product detection samples into the interior of a detection tube without taking out the detection tube containing the agricultural product detection samples, so that the drug content in different amounts of agricultural product detection samples can be conveniently detected, and by arranging a positioning mechanism, the feeding mechanism can adapt to the stable feeding requirements of detection tubes of different sizes, and the practicability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the detection chamber and the detection slot of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the injection cylinder, push rod and support seat of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the threaded rod and the positioning plate of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the syringe, ear plate and magnetic block of the utility model.

[0026] In the figure, 1. main body of the full-spectrum pesticide residue detector; 101. display screen; 102. detection chamber; 103. detection slot; 104. chamber cover; 2. feeding mechanism; 201. injection barrel; 202. push rod; 203. ear plate; 204. support seat; 2041. threaded rod; 2042. positioning plate; 2043. first threaded ring; 2044. second threaded ring; 2045. bearing; 2046. magnetic block; 205. scale. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The embodiment of the present application provides a detection device to solve the problem that the overall detection steps are relatively cumbersome when a full-spectrum pesticide residue detector is used to detect drug content in different amounts of agricultural product test samples, and realizes loading of materials into the interior of the test tube without removing the test tube.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] The utility model embodiment discloses a device for detecting drug residues in agricultural products based on Raman spectroscopy.

[0031] According to the attached Figure 1-5As shown, the full-spectrum pesticide residue detector includes a main body 1, a detection chamber 102 arranged on the top end surface of the main body 1 of the full-spectrum pesticide residue detector, a detection slot 103 opened inside the detection chamber 102 for supporting a detection tube, and a chamber cover 104 rotatably connected to the chamber opening of the detection chamber 102. The detection tube is not specifically drawn in the drawings. A display screen 101 is arranged on the top end surface of the main body 1 of the full-spectrum pesticide residue detector. The main body 1 of the full-spectrum pesticide residue detector, the detection chamber 102, the detection slot 103, the chamber cover 104 and the display screen 101 The full-spectrum pesticide residue detector model CSY-GN is composed of the following components. When in use, the detection tube containing the agricultural product detection sample is inserted into the inside of the detection slot 103, and then the compartment cover 104 is closed, and then the detection start button is touched on the display screen 101, so that the full-spectrum pesticide residue detector body 1 detects the agricultural product detection sample, and the detected result spectrum is displayed on the display screen 101, and then the spectrum is compared with the Raman spectrum of the agricultural product without drug residue prepared in advance, and finally the corresponding conclusion is drawn.

[0032] A feeding mechanism 2 is provided on the top end surface of the bin cover 104, that is, when testing the drug content in different amounts of agricultural product test samples, the test tube can be directly loaded without taking the test tube out of the test slot 103. The feeding mechanism 2 includes a syringe 201. The setting positions of the multiple groups of syringes 201 correspond to the positions of the test slots 103. The syringe 201 is connected to the bin cover 104. One end of the syringe 201 passes through the bin cover 104 and corresponds to the test slot 103. A push rod 202 is slidably arranged on the inner wall of the syringe 201. The push rod 202 is used to assist the test sample inside the syringe 201 to be loaded into the inside of the test tube. An ear plate 203 is provided on the top outer wall of the syringe 201. By pulling the push rod 202, a negative pressure is created in the syringe 201 so that a certain amount of agricultural product test sample can be extracted into the inside of the syringe 201. When the push rod 202 is pushed, the agricultural product test sample can be loaded into the inside of the test tube inserted into the inside of the test slot 103.

[0033] The support seat 204 is arranged on the top end surface of the chamber cover 104, and the support seat 204 is used to support the syringe 201. The top end surface of the support seat 204 is provided with a positioning mechanism for positioning the placement position of the syringe 201, that is, for different sizes of detection tubes, the connection position between the injection end of the syringe 201 and the tube mouth of the detection tube can be adjusted accordingly through the positioning mechanism. The positioning mechanism includes a threaded rod 2041, and the threaded rod 2041 is fixedly connected to the top end surface of the support seat 204. The ear plate 203 is sleeved on the outer wall of the threaded rod 2041, and the positioning plate 2042 is connected to the outer wall of the threaded rod 2041. The positioning plate 2042 is used to position the placement position of the syringe 201 relative to the detection groove 103. The top end surface of the support seat 204 is fixedly connected with a scale 205.

[0034] The first threaded ring 2043 and the second threaded ring 2044 are threadedly sleeved on the outer wall of the threaded rod 2041. The first threaded ring 2043 and the second threaded ring 2044 are used for locking between the positioning plate 2042 and the threaded rod 2041. The bottom end face of the positioning plate 2042 is fixedly connected with the bearing 2045. One end of the first threaded ring 2043 is fixedly connected with the inner wall of the bearing 2045. The bottom end face of the ear plate 203 is fixedly connected with a magnetic block 2046. The magnetic block 2046 is magnetically attracted to the top end face of the positioning plate 2042. The positioning plate 2042 is made of metal. The connection and positioning between the syringe 201 and the positioning plate 2042 are achieved through the magnetic attraction between the magnetic block 2046 and the positioning plate 2042.

[0035] The agricultural product drug residue detection device based on Raman spectroscopy, by arranging a feeding mechanism 2 on the top end surface of the bin cover 104, can directly add the agricultural product detection sample into the interior of the detection tube without taking out the detection tube containing the agricultural product detection sample, so that the drug content in different amounts of agricultural product detection samples can be conveniently detected, and the positioning mechanism is arranged so that the feeding mechanism 2 can adapt to the stable feeding requirements of detection tubes of different sizes, and has good practicality.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A Raman spectroscopy-based agricultural product drug residue detection device, comprising a full-spectrum pesticide residue detection instrument body (1), a detection chamber (102) arranged on the top end surface of the full-spectrum pesticide residue detection instrument body (1), a detection slot (103) provided inside the detection chamber (102) for supporting a detection tube, and a chamber cover (104) rotatably connected to the chamber opening of the detection chamber (102), characterized in that: The top end surface of the bin cover (104) is provided with a feeding mechanism (2), and the feeding mechanism (2) comprises: An injection cylinder (201) is connected to the chamber cover (104), one end of the injection cylinder (201) passes through the chamber cover (104) and corresponds to the detection slot (103); A push rod (202) is slidably disposed on the inner wall of the syringe (201), and the push rod (202) is used to assist the test sample inside the syringe (201) to be loaded into the inside of the test tube; A support seat (204) is arranged on the top end surface of the chamber cover (104), and the support seat (204) is used to support the injection cylinder (201). The top end surface of the support seat (204) is provided with a positioning mechanism for positioning the injection cylinder (201).

2. The agricultural product drug residue detection device based on Raman spectroscopy according to claim 1 is characterized in that: The top outer wall of the injection cylinder (201) is provided with an ear plate (203).

3. The agricultural product drug residue detection device based on Raman spectroscopy according to claim 2 is characterized in that: The positioning mechanism comprises: A threaded rod (2041) is fixedly connected to the top end surface of the support seat (204), and the ear plate (203) is sleeved on the outer wall of the threaded rod (2041); A positioning plate (2042) connected to the outer wall of the threaded rod (2041), the positioning plate (2042) being used to position the injection cylinder (201) relative to the detection slot (103); The first threaded ring (2043) and the second threaded ring (2044) are threadedly sleeved on the outer wall of the threaded rod (2041), and the first threaded ring (2043) and the second threaded ring (2044) are used to lock the positioning plate (2042) and the threaded rod (2041).

4. The agricultural product drug residue detection device based on Raman spectroscopy according to claim 3 is characterized in that: The bottom end surface of the positioning plate (2042) is fixedly connected to a bearing (2045), and one end of the first threaded ring (2043) is fixedly connected to the inner wall of the bearing (2045).

5. The agricultural product drug residue detection device based on Raman spectroscopy according to claim 2, characterized in that: A magnetic block (2046) is fixedly connected to the bottom end surface of the ear plate (203), and the magnetic block (2046) is magnetically attracted to the top end surface of the positioning plate (2042).

6. The agricultural product drug residue detection device based on Raman spectroscopy according to claim 3 is characterized in that: A scale (205) is fixedly connected to the top end surface of the support seat (204).

7. The agricultural product drug residue detection device based on Raman spectroscopy according to claim 1, characterized in that: A display screen (101) is provided on the top end surface of the main body (1) of the full-spectrum pesticide residue detector.

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