Full-automatic pesticide residue detector

Abstract

The utility model discloses a full-automatic pesticide residue detector which comprises a pesticide residue detector body, a colorimetric groove is formed in the top of the pesticide residue detector body, a protective shell is fixedly arranged on the front side of the pesticide residue detector body, and a driving motor is fixedly arranged on the front side of the protective shell. The driving motor drives the rotating rod to rotate through the transmission assembly, the rotating rod drives the lifting assembly to drive the moving plate to move downwards, the moving plate drives the cuvette to move into the colorimetric groove, the depth of the cuvette entering the colorimetric groove is detected through the measuring assembly, and the situation that the cuvette cannot be moved for other operations due to manual operation is avoided; the pesticide residue detector body can automatically move the cuvette, so that the situation that the measured absorbance is small due to too shallow insertion is avoided, the situation that the absorbance is large due to the fact that the optical path is lengthened due to too deep insertion is avoided, and therefore a measured value cannot deviate from a real value.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection technology, and in particular to a fully automatic pesticide residue detector. Background Technology

[0002] Pesticide residue testing is used to ensure the quality and safety of agricultural products and the health of consumers. Some pesticides are highly toxic, such as organophosphate pesticides. If a large amount is ingested by the human body in a short period of time, it will quickly cause poisoning symptoms such as dizziness, vomiting, and difficulty breathing. In severe cases, it can be life-threatening. Moreover, if food with pesticide residues is consumed over a long period of time, even if the amount ingested each time is very small, some pesticide residues are difficult to degrade and are easy to accumulate. For example, organochlorine pesticides will also accumulate slowly in the human body. Such pesticide accumulation can interfere with the human endocrine and immune systems and increase the probability of chronic diseases such as cancer, reproductive disorders, and nervous system diseases.

[0003] Therefore, it is necessary to test pesticide residues. A fully automatic pesticide residue detector is a modern instrument used to detect pesticide residues in samples of agricultural products and food. It can be used to detect pesticide residues in agricultural products such as vegetables, fruits, tea, grains, and agricultural by-products, and to promptly detect and address pesticide residue exceeding the standard.

[0004] In the prior art, application number CN202222953237.4 proposes a pesticide residue detector. In the above technical solution, the discharge mechanism drives the connecting plate to move vertically within the receiving cavity, so that the connecting plate drives all the cuvettes to slide vertically along their respective storage tanks, thereby saving discharge time and improving the ease of use of the pesticide residue detection equipment. However, when the connecting plate drives the cuvettes to move vertically, it is necessary to manually operate the connecting plate to raise and lower it so that the cuvettes can enter the cuvettes. However, manual operation is time-consuming, has a low degree of automation, and cannot control the depth of the cuvettes entering the cuvettes. The depth of the cuvettes inserted into the cuvettes will cause the measured value to deviate from the true value. Based on the above problems, this application proposes a fully automatic pesticide residue detector. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a fully automatic pesticide residue detector to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fully automatic pesticide residue detector includes a pesticide residue detector body, a colorimetric cell on the top of the pesticide residue detector body, a protective shell fixedly mounted on the front side of the pesticide residue detector body, a drive motor fixedly mounted on the front side of the protective shell, a transmission assembly at the output end of the drive motor, a rotating rod connected to the output end of the drive motor via the transmission assembly, a support frame fixedly mounted inside the pesticide residue detector body, a connecting bearing installed inside the support frame, the inner ring of the connecting bearing connected to the rotating rod, a lifting assembly on the surface of the rotating rod, a movable plate inside the pesticide residue detector body connected to the lifting assembly, a colorimetric cell overlapping the top of the movable plate, and a measuring assembly positioned between the lower side wall of the support frame and the bottom of the movable plate.

[0008] Preferably, the transmission assembly includes a drive wheel fixedly installed at the output end of the drive motor, a transmission belt meshing inside the drive wheel, a driven wheel meshing inside the transmission belt, and the driven wheel fixedly installed at the front end of the rotating rod.

[0009] Preferably, the lifting assembly includes a worm gear sleeve fixedly installed on the surface of the rotating rod, a worm wheel meshing on the surface of the worm gear sleeve, a screw fixedly installed inside the worm wheel, a fixed seat installed at the bottom end of the screw via a bearing, the fixed seat being fixedly installed inside the pesticide residue detector body, an internal threaded tube being threaded on the surface of the screw, a fixed ring being fixedly installed at the top end of the internal threaded tube, and the fixed ring being fixedly installed at the bottom of the moving plate.

[0010] Preferably, the measuring component includes a support column fixedly installed on the top of the support frame, a mounting plate fixedly installed on the top of the support column, a pressing rod slidably installed inside the mounting plate, a pressure sensor overlapping the bottom end of the pressing rod, a mounting circular plate fixedly installed on the top of the pressing rod, and a spring fixedly installed on the top of the mounting circular plate. The spring is fixedly installed on the bottom of the movable plate.

[0011] Preferably, a dust cover is attached to the top of the pesticide residue detector body, and a retaining plate is fixedly attached to the bottom of the dust cover, with the retaining plate attached inside the colorimetric cell.

[0012] Preferably, there are four internally threaded tubes and four screws, and the four internally threaded tubes and four screws are symmetrically distributed.

[0013] Preferably, the support frame consists of a base plate and four connecting plates, and the connecting bearings are installed inside the connecting plates.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The fully automatic pesticide residue detector uses a drive motor to rotate a rotating rod via a transmission assembly. The rotating rod drives a lifting assembly to move a moving plate downwards. The moving plate moves the cuvette into the cuvette tank, and the measuring assembly detects the depth of the cuvette into the cuvette tank. This avoids the inability to perform other operations due to manual operation, allowing the pesticide residue detector to automatically move the cuvette. This prevents the absorbance from being too low due to shallow insertion and avoids the absorbance from being too high due to excessive insertion and longer optical path, thus ensuring that the measured value does not deviate from the true value. Attached Figure Description

[0015] Figure 1 This is an isometric drawing of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the pesticide residue detector of this utility model;

[0017] Figure 3 This is a schematic diagram of another internal structure of the pesticide residue detector body of this utility model;

[0018] Figure 4 This is a partial structural diagram of the present invention;

[0019] Figure 5 This is a schematic diagram of the measuring component structure of this utility model.

[0020] In the diagram: 1. Pesticide residue detector body; 2. Protective housing; 3. Drive motor; 4. Drive wheel; 5. Transmission belt; 6. Driven wheel; 7. Rotating rod; 8. Support frame; 9. Connecting bearing; 10. Worm sleeve; 11. Worm wheel; 12. Screw; 13. Fixed seat; 14. Internal threaded tube; 15. Fixed ring; 16. Support column; 17. Mounting plate; 18. Extrusion rod; 19. Pressure sensor; 20. Mounting circular plate; 21. Spring; 22. Moving plate; 23. Cuvette; 24. Dust cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figure 1-5An automatic pesticide residue detector includes a pesticide residue detector body 1. A colorimetric groove is located on the top of the pesticide residue detector body 1. A protective shell 2 is fixedly mounted on the front side of the pesticide residue detector body 1. A drive motor 3 is fixedly mounted on the front side of the protective shell 2. A transmission assembly is located at the output end of the drive motor 3. A rotating rod 7 is connected to the output end of the drive motor 3 via the transmission assembly. A support frame 8 is fixedly mounted inside the pesticide residue detector body 1. A connecting bearing 9 is installed inside the support frame 8. The support frame 8 consists of a base plate and four connecting plates. The connecting bearing 9 is installed inside the connecting plates. Through the support frame 8 (comprising the base plate and four connecting plates) and the connecting bearing 9, two rotating rods 7 can be supported simultaneously, preventing the rotating rods 7 from being suspended in mid-air. The inner ring of bearing 9 is connected to rotating rod 7. A lifting assembly is provided on the surface of rotating rod 7. A movable plate 22 is installed inside the pesticide residue detector body 1 via the lifting assembly. A cuvette 23 is attached to the top of the movable plate 22. The transmission assembly includes a drive wheel 4 fixedly installed at the output end of drive motor 3. A transmission belt 5 is meshed inside the drive wheel 4. A driven wheel 6 is meshed inside the transmission belt 5. The driven wheel 6 is fixedly installed at the front end of rotating rod 7. The lifting assembly includes a worm sleeve 10 fixedly installed on the surface of rotating rod 7. A worm wheel 11 is meshed on the surface of worm sleeve 10. A screw 12 is fixedly installed inside the worm wheel 11. A fixed seat 13 is installed at the bottom end of screw 12 via a bearing. The fixed seat 13 is fixedly installed inside the pesticide residue detector body 1. The surface of the moving plate 22 is threaded with internally threaded tubes 14. There are four internally threaded tubes 14 and four screws 12, symmetrically distributed. These four internally threaded tubes 14 and four screws 12 ensure smoother movement of the moving plate 22, preventing sample movement within the cuvette 23 due to plate 22 wobbling. This also prevents irregular liquid flow and vortices within the cuvette 23 from causing weaker and unevenly distributed light reaching the detector, thus avoiding unstable absorbance readings. A fixing ring 15 is fixedly mounted at the top of the internally threaded tube 14, and is fixedly installed at the bottom of the moving plate 22. The drive motor 3 rotates the moving plate 22 via the drive wheel 4, transmission belt 5, and driven wheel 6. Rotating rod 7 causes the worm gear sleeve 10 to drive the screw 12 to rotate via the worm wheel 11. This causes the internal threaded tube 14 to move the moving plate 22 downwards via the fixed ring 15, facilitating the entry of the cuvette 23 into the colorimetric tank. Simultaneously, the drive motor 3 drives the rotating rod 7 to rotate in the opposite direction via the transmission assembly. This causes the rotating rod 7 to drive the lifting assembly to push the moving plate 22 upwards, allowing the moving plate 22 to push the cuvette 23 out of the colorimetric tank. This automatically moves all the cuvettes 23 into the colorimetric tank and facilitates the automatic removal of the cuvettes 23 from the colorimetric tank, resulting in a higher degree of automation for the pesticide residue detector body 1. A measuring component is installed between the lower side wall of the support frame 8 and the bottom of the moving plate 22. The measuring component includes a support column 16 fixedly installed on the top of the support frame 8.A mounting plate 17 is fixedly installed on the top of the support column 16. A pressing rod 18 is slidably installed inside the mounting plate 17. A pressure sensor 19 is attached to the bottom end of the pressing rod 18. A mounting circular plate 20 is fixedly installed on the top of the pressing rod 18. A spring 21 is fixedly installed on the top of the mounting circular plate 20. The spring 21 is fixedly installed at the bottom of the moving plate 22. When the moving plate 22 moves downward, it compresses the spring 21. As the moving plate 22 compresses the spring 21, the compression degree increases, resulting in a greater rebound force. This causes the spring 21 to push the pressing rod 18 through the mounting circular plate 20, applying pressure to the detection end of the pressure sensor 19. When the pressure sensor 19 detects that the pressure has reached the maximum preset value, the drive motor 3 stops operating, allowing the cuvette 23 to enter the cuvette tank to the most suitable depth, thus preventing the cuvette 23 from entering the cuvette tank too shallowly or too deeply.

[0023] Specifically, a dust cover 24 is attached to the top of the pesticide residue detector body 1, and a card plate is fixedly attached to the bottom of the dust cover 24. The card plate is attached to the inside of the colorimetric cell. The dust cover 24 is placed on the top of the pesticide residue detector body 1, so that the card plate is inserted into the colorimetric cell, preventing external light from interfering with the pesticide residue detector body 1 in detecting pesticide residues.

[0024] This fully automatic pesticide residue detector is connected to a 220V mains power supply, and the main controller can be a conventional known device such as a computer for control.

[0025] In use: Place the cuvette 23 into the colorimetric tank of the pesticide residue detector body 1, so that the bottom of the cuvette 23 contacts the moving plate 22. When it is necessary to move the cuvette 23 completely into the colorimetric tank, the drive motor 3 drives the output end to rotate the drive wheel 4. The drive wheel 4 drives the driven wheel 6 to rotate through the transmission belt 5, so that the driven wheel 6 drives the rotating rod 7 to rotate inside the support frame 8 through the connecting bearing 9. The rotating rod 7 drives the worm sleeve 10 to rotate, and the worm sleeve 10 drives the worm wheel 11 that meshes with it to rotate, so that the worm wheel 11 drives the screw 12 to rotate inside the fixed seat 13 through the bearing, so that the screw 12 drives the internal thread tube. 14 moves downwards, and the internal threaded tube 14 drives the moving plate 22 to move downwards through the fixed ring 15, so that the moving plate 22 drives the cuvette 23 into the cuvette tank. When the moving plate 22 moves downwards, it will compress the spring 21. As the moving plate 22 compresses the spring 21, the spring 21 applies a downward thrust to the mounting plate 20, and the mounting plate 20 applies the thrust to the extrusion rod 18, so that the extrusion rod 18 applies pressure to the detection end of the pressure sensor 19. When the pressure sensor 19 detects that the pressure has reached the maximum preset value, the drive motor 3 stops running, and the cuvette 23 enters the cuvette tank to the most suitable depth.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A full-automatic pesticide residue detector, comprising a pesticide residue detector body (1), characterized in that, The pesticide residue detector body (1) top is provided with colorimetric cell, the pesticide residue detector body (1) front side is fixedly provided with protective shell (2), the protective shell (2) front side is fixedly provided with drive motor (3), the drive motor (3) output is provided with transmission assembly, the drive motor (3) output is provided with rotating rod (7) through transmission assembly, the pesticide residue detector body (1) inside is fixedly provided with support frame (8), the support frame (8) inside is installed with connecting bearing (9), the connecting bearing (9) inner ring is connected with rotating rod (7), the rotating rod (7) surface is provided with lifting assembly, the pesticide residue detector body (1) inside is provided with moving plate (22) through lifting assembly, the moving plate (22) top is provided with colorimetric dish (23), the support frame (8) lower side wall is provided with measuring assembly between moving plate (22) bottom.

2. The automatic pesticide residue detector according to claim 1, characterized in that, The transmission assembly includes a driving wheel (4) fixedly installed on the output end of the drive motor (3), a transmission belt (5) is engaged inside the driving wheel (4), a driven wheel (6) is engaged inside the transmission belt (5), and the driven wheel (6) is fixedly installed on the front end of the rotating rod (7).

3. The automatic pesticide residue detector according to claim 1, characterized in that, The lifting assembly includes a worm sleeve (10) fixedly installed on the surface of the rotating rod (7), a worm wheel (11) is engaged on the surface of the worm sleeve (10), a screw rod (12) is fixedly installed inside the worm wheel (11), a fixed seat (13) is installed on the bottom end of the screw rod (12) through a bearing, the fixed seat (13) is fixedly installed inside the pesticide residue detector body (1), an internal threaded tube (14) is threadedly arranged on the surface of the screw rod (12), a fixed ring (15) is fixedly arranged on the top end of the internal threaded tube (14), and the fixed ring (15) is fixedly installed on the bottom of the moving plate (22).

4. The automatic pesticide residue detector according to claim 1, characterized in that, The measuring assembly includes a support column (16) fixedly installed on the top of the support frame (8), an installation plate (17) is fixedly arranged on the top of the support column (16), an extrusion rod (18) is slidably arranged inside the installation plate (17), a pressure sensor (19) is overlappedly arranged on the bottom end of the extrusion rod (18), an installation disc (20) is fixedly arranged on the top of the extrusion rod (18), a spring (21) is fixedly arranged on the top of the installation disc (20), and the spring (21) is fixedly installed on the bottom of the moving plate (22).

5. The automatic pesticide residue detector according to claim 1, characterized in that, The top of the pesticide residue detector body (1) is overlappedly provided with a dust cover (24), the bottom of the dust cover (24) is fixedly provided with a clamping plate, and the clamping plate is overlappedly arranged inside the colorimetric cell.

6. The automatic pesticide residue detector according to claim 3, characterized in that, The number of the internal threaded tube (14) and the screw rod (12) is four, and the four internal threaded tubes (14) and the four screw rods (12) are symmetrically distributed.

7. The automatic pesticide residue detector according to claim 1, characterized in that, The support frame (8) is composed of a bottom plate and four connecting plates, and the connecting bearing (9) is installed inside the connecting plate.

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