A device for detecting pesticide residues and heavy metals on-line in a dehydrated vegetable production line

Abstract

The present application relates to the technical field of online detection equipment for vegetable pesticide residues and heavy metals, in particular to a pesticide residue and heavy metal online detection device for dehydrated vegetable production line, which comprises a production line body, an L-shaped detection table is installed on one side of the edge support of the production line body, a pesticide residue detector and a heavy metal detector are symmetrically installed on both sides of the upper end of the L-shaped detection table, an installation table is installed on one side of the L-shaped detection table, an installation box is arranged on one side of the installation table, a cavity is formed in the installation box, and a movable table is arranged in the cavity, the test tube that needs to be shaken is put into the U-shaped clamping groove, the motor is started, the rotating disc rotates, the movable table moves by the driving of the driving rod, the four vibration springs cooperate with the movable table, the movable table reciprocates in the installation box, the test liquid in the test tube is fully mixed with the reagent, and the accuracy and reliability of equipment detection are ensured.

Description

Technical Field

[0001] This invention relates to the technical field of online detection equipment for pesticide residues and heavy metals in vegetables, specifically an online detection device for pesticide residues and heavy metals used in dehydrated vegetable production lines. Background Technology

[0002] Dehydrated vegetables are vegetable products made by industrially removing most of the free water from vegetables, reducing the water activity (Aw) to below 0.7. This low-moisture environment directly inhibits microbial growth and deactivates endogenous enzymes, allowing for a long shelf life of 12 to 24 months at room temperature without the need for additional preservatives. They are currently a core ingredient in convenience foods, compound seasonings, ready-made meals, and emergency reserves. Since the safety of dehydrated vegetables is directly affected by the quality of the raw materials, to control food safety risks at the source and prevent pesticide residues and heavy metal contamination from entering subsequent processing stages, the industry needs to screen and test fresh vegetables for pesticide residues and heavy metals before processing them on the dehydrated vegetable production line. Therefore, online pesticide residue and heavy metal detection devices are needed to complement the production line.

[0003] Currently, most online pesticide residue and heavy metal detection devices used in dehydrated vegetable production lines employ a method of setting up dedicated detection workbenches next to the production line, with pesticide residue detection equipment and heavy metal detection equipment installed on the workbenches respectively. In actual testing operations, vegetable samples need to be manually extracted from the production line by staff. Before testing, the samples need to be pre-treated, including crushing, extraction of active ingredients, and filtration, to prepare a standard test solution. Then, the matching detection reagents are added to the test solution and thoroughly mixed. Finally, the treated sample is placed into the detection equipment, which can then analyze and detect the pesticide residues and heavy metal content in the vegetables.

[0004] In the process of detecting pesticide residues and heavy metals in vegetables, the prepared test solution and the matching detection reagents need to be added together into the extraction tube and shaken thoroughly for 1-2 minutes. Traditionally, the extraction tube is manually shaken to complete the mixing process. However, dehydrated vegetables are tested in an online continuous testing mode, and staff need to carry out sampling and testing work without interruption. Manual shaking is not only inefficient and difficult to adapt to the continuous testing rhythm of the production line, but it is also prone to uneven shaking and insufficient mixing of reagents and test solutions. This reduces the overall testing efficiency and causes deviations in the test data, affecting the accuracy and reliability of the test results. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line. It has the advantage of being able to quickly and thoroughly mix the test liquid and the matching detection reagent in the extraction tube, thus ensuring the accuracy and reliability of the detection results.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line, comprising a production line body, an L-shaped detection platform installed on one side of the edge support of the production line body, pesticide residue detectors and heavy metal detectors symmetrically installed on both sides of the upper end of the L-shaped detection platform, an installation platform installed on one side of the L-shaped detection platform, an installation box provided on one side of the installation platform, a cavity opened inside the installation box, a motor installed in the middle of the bottom of the cavity, the output end of the motor connected to a rotating disk via a coupling, a lever fixedly connected to the upper end of the rotating disk near the edge, a movable platform provided inside the cavity, one end of the lever rotatably connected to the lower end of the movable platform, vibration springs fixedly connected to the four corners of the lower end of the movable platform, the other ends of the four vibration springs fixedly connected to the bottom of the cavity, a placement frame fixedly connected to the upper end of the movable platform via a support rod, a plurality of U-shaped slots opened on one side of the placement frame, and test tubes placed inside the plurality of U-shaped slots.

[0007] Preferably, a limiting groove is formed on one side of the outer surface of the placement rack, and a rubber ring is fitted onto the inner wall of the limiting groove.

[0008] Preferably, the inner walls of the plurality of U-shaped slots are all fixedly connected with protective layers, and the plurality of protective layers are all made of sponge.

[0009] Preferably, the upper end of the mounting platform is provided with a placement groove, the mounting box is placed in the placement groove, and abutment plates are attached to all four sides of the mounting box. A damper is fixedly connected to one side of each of the four abutment plates, and one end of each of the four dampers is fixedly connected to the inner wall of the placement groove. A buffer spring is sleeved on the outer surface of each of the four dampers, and the two ends of the buffer spring are fixedly connected to one side of the abutment plate and one side of the inner wall of the placement groove, respectively.

[0010] Preferably, a reinforcing rib is fixedly connected at the lower corner of the L-shaped testing platform, and the reinforcing rib is made of stainless steel.

[0011] Preferably, a storage frame is installed on the other side of the upper end of the L-shaped testing platform via a bracket, and a partition is fixedly connected to the inner wall of the storage frame.

[0012] Preferably, a connecting plate is fixedly connected to one side of the upper end of the storage frame, and a light is installed on one side of the connecting plate.

[0013] Preferably, an L-shaped baffle is fixedly connected to the upper edge corner of the L-shaped detection platform.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention involves placing the test tubes that need to be shaken into the U-shaped slots, turning on the motor, causing the rotating disk to rotate, and moving the movable stage with the actuating lever. Four vibration springs cooperate with the movable stage to make it oscillate back and forth in the mounting box, ensuring that the test liquid and reagent in the test tubes are fully mixed, thus ensuring the accuracy and reliability of the equipment's detection. At the same time, multiple U-shaped slots are set on the placement rack, which can be aligned with the extraction tubes for pesticide residues and heavy metals to shake and mix simultaneously, improving the detection efficiency of the equipment.

[0015] 2. This invention utilizes the structural cooperation of a rubber ring and a limiting groove. Pulling the rubber ring causes it to deform, and after inserting the test tube into the U-shaped groove, loosening the rubber ring allows its own elasticity to restore it to its initial position. The rubber ring secures the test tube within the U-shaped groove, while the protective layer protects the surface of the test tube, preventing it from shaking during shaking, which could lead to breakage and affect subsequent testing.

[0016] 3. Through the structural design of multiple abutment plates, dampers, and buffer springs, when the vibration force generated during shaking is transmitted to the mounting platform, the buffer spring undergoes elastic deformation to offset the vibration force. The damper dampens and attenuates the buffer spring, reducing the transmission of vibration force to the L-shaped detection platform. This prevents vibration from affecting the operation of the pesticide residue detector and heavy metal detector, ensuring the accuracy of the equipment's detection data. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall device of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall structure of the L-shaped detection stage in the device of the present invention.

[0019] Figure 3 This is a schematic diagram showing the connection relationship between the mounting platform and the mounting box in the device of the present invention.

[0020] Figure 4 This is a top cross-sectional view of the mounting platform in the device of the present invention.

[0021] Figure 5 for Figure 4 A magnified view of a portion of region A in the middle.

[0022] Figure 6 This is a first-view structural diagram of the internal structure of the mounting box in the device of the present invention.

[0023] Figure 7 This is a second-view structural diagram of the internal structure of the mounting box of the device of the present invention.

[0024] Figure 8 This is a schematic diagram showing the connection relationship between the motor, the rotating disk, and the actuating lever in the device of the present invention.

[0025] In the diagram: 1. Production line body; 11. L-shaped testing platform; 12. Pesticide residue detector; 13. Heavy metal detector; 14. Storage frame; 15. Partition; 16. Reinforcing rib; 17. Connecting plate; 18. Lighting lamp; 19. L-shaped baffle; 2. Mounting platform; 21. Abutment plate; 22. Placement slot; 23. Damper; 24. Buffer spring; 3. Mounting box; 31. Placement rack; 32. Test tube; 33. U-shaped slot; 34. Movable platform; 35. Vibration spring; 36. Protective layer; 37. Motor; 38. Rotary disc; 39. Actuating rod; 4. Rubber ring; 41. Limiting slot. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1:

[0027] Please see Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8This is the first embodiment of the present invention, providing a technical solution: an online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line, comprising a production line body 1, an L-shaped detection platform 11 mounted on one side of the edge support of the production line body 1, pesticide residue detectors 12 and heavy metal detectors 13 symmetrically mounted on both sides of the upper end of the L-shaped detection platform 11, a mounting platform 2 mounted on one side of the L-shaped detection platform 11, a mounting box 3 provided on one side of the mounting platform 2, a cavity opened inside the mounting box 3, a motor 37 mounted in the middle of the bottom of the cavity, the output end of the motor 37 connected to a rotating disk 38 via a coupling, a lever 39 fixedly connected to the upper end of the rotating disk 38 near the edge, a movable platform 34 provided inside the cavity, one end of the lever 39 rotatably connected to the lower end of the movable platform 34. Next, vibration springs 35 are fixedly connected to the four corners of the lower end of the movable platform 34. The other ends of the four vibration springs 35 are fixedly connected to the bottom of the cavity. The upper end of the movable platform 34 is fixedly connected to a placement rack 31 via a support rod. Multiple U-shaped slots 33 are provided on one side of the placement rack 31. Test tubes 32 are placed inside the multiple U-shaped slots 33. A reinforcing rib 16 is fixedly connected to the lower corner of the L-shaped testing platform 11. The reinforcing rib 16 is made of stainless steel. A storage frame 14 is installed on the other side of the upper end of the L-shaped testing platform 11 via a bracket. A partition 15 is fixedly connected to the inner wall of the storage frame 14. A connecting plate 17 is fixedly connected to one side of the upper end of the storage frame 14. A light 18 is installed on one side of the connecting plate 17. An L-shaped baffle 19 is fixedly connected to the upper edge corner of the L-shaped testing platform 11.

[0028] By placing the test tube 32, which needs to be shaken, into the U-shaped slot 33, turning on the motor 37, the rotating disk 38 rotates, and the actuating lever 39 moves the movable stage 34. The four vibration springs 35 cooperate with the movable stage 34, causing the movable stage 34 to oscillate back and forth within the mounting box 3, so that the test liquid and reagent in the test tube 32 are fully mixed, ensuring the accuracy and reliability of the equipment detection. At the same time, multiple U-shaped slots 33 are set on the placement rack 31, which can be aligned with the extraction tubes for pesticide residues and heavy metals and shaken and mixed simultaneously, improving the detection efficiency of the equipment.

[0029] During use, the storage frame 14 and the partition 15 work together to form a storage rack on the L-shaped testing table 11, which makes it convenient to place and organize the tools to be tested, and prevents the table surface of the L-shaped testing table 11 from being cluttered and affecting the testing operation of the staff; the lighting 18 is used to illuminate the table surface of the L-shaped testing table 11, which makes it convenient for the staff to carry out the testing process; the L-shaped baffle 19 is used to prevent the equipment on the table from falling off the L-shaped testing table 11.

[0030] It is important to note that the reagent used for pesticide residue testing is acetylcholinesterase reagent, which will inhibit activity when it comes into contact with pesticide residues. The more pesticide residues there are, the lower the enzyme activity, thus making it easier for the pesticide residue detector 12 to detect. The reagent used for heavy metal testing is an acidic digestive agent such as dilute nitric acid, which destroys the vegetable plant fiber tissue structure, dissolves the bound heavy metals wrapped inside the tissue, and converts them into a liquid free ion state, thus making it easier for the heavy metal detector 13 to detect. Example 2:

[0031] Please see Figure 3 , Figure 6 and Figure 7 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a limiting groove 41 is opened on one side of the outer surface of the placement rack 31, a rubber ring 4 is sleeved on the inner wall of the limiting groove 41, and a protective layer 36 is fixedly connected to the inner wall of the multiple U-shaped slots 33. The multiple protective layers 36 are all made of sponge.

[0032] During use, when the test tube 32 is fixed on the placement rack 31 to reduce shaking, the rubber ring 4 is pulled. The rubber ring 4 deforms and the test tube 32 is inserted into the U-shaped slot 33. After that, the rubber ring 4 is loosened. The elasticity of the rubber ring 4 will restore the rubber ring 4 to its initial position. The rubber ring 4 fixes the test tube 32 in the U-shaped slot 33. At the same time, the protective layer 36 protects the surface of the test tube 32 to prevent the test tube 32 from shaking during shaking, which could cause the test tube 32 to break and affect subsequent testing.

[0033] The remaining structure is the same as that in Example 1. Example 3:

[0034] Please see Figures 1 to 5 This is the third embodiment of the present invention. This embodiment differs from the first and second embodiments in that: the upper end of the mounting platform 2 is provided with a placement groove 22, the mounting box 3 is placed in the placement groove 22, and the four sides of the mounting box 3 are all attached with abutment plates 21. A damper 23 is fixedly connected to one side of each of the four abutment plates 21. One end of each of the four dampers 23 is fixedly connected to the inner wall of the placement groove 22. A buffer spring 24 is sleeved on the outer surface of each of the four dampers 23. The two ends of the buffer spring 24 are fixedly connected to one side of the abutment plate 21 and one side of the inner wall of the placement groove 22, respectively.

[0035] During use, the structural design of multiple contact plates 21, dampers 23, and buffer springs 24 ensures that when the vibration force generated during shaking is transmitted to the mounting platform 2, the buffer springs 24 undergo elastic deformation to counteract the vibration force. The dampers 23 dampen and suppress the buffer springs 24, reducing the transmission of vibration force to the L-shaped detection platform 11 and preventing vibration from affecting the operation of the pesticide residue detector 12 and heavy metal detector 13, thus ensuring the accuracy of the equipment's detection data.

[0036] The remaining structures are the same as those in Examples 1 and 2.

[0037] This invention provides an online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line. The specific working principle is as follows: When conducting online testing for pesticide residues and heavy metals on dehydrated vegetables before production, the vegetables to be tested are first placed on the production line body 1. The production line body 1 transports the vegetables, and staff take samples. The vegetables are then pre-treated to prepare the test solution, which is added to the extraction tube along with the matching detection reagent. The test tube 32, which needs to be shaken, is placed into the U-shaped slot 33. The motor 37 is turned on, causing the rotating disk 38 to rotate. The actuating lever 39 moves the movable platform 34, and the four vibration springs 35 cooperate with the movable platform 34 to make the movable platform 34 swing back and forth in the mounting box 3, so that the test solution and reagent in the test tube 32 are fully mixed. After mixing, the test tube is placed in the pesticide residue detector 12 for testing to determine whether the pesticide residue exceeds the standard. The heavy metal detector 13 is operated in the same way to detect whether the heavy metal exceeds the standard.

[0038] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line, comprising the production line body (1), characterized in that: An L-shaped testing platform (11) is installed on one side of the edge support of the production line body (1). A pesticide residue detector (12) and a heavy metal detector (13) are symmetrically installed on both sides of the upper end of the L-shaped testing platform (11). A mounting platform (2) is installed on one side of the L-shaped testing platform (11). A mounting box (3) is provided on one side of the mounting platform (2). A cavity is opened inside the mounting box (3). A motor (37) is installed in the middle of the bottom of the cavity. The output end of the motor (37) is connected to a rotating disk (38) through a coupling. The upper end of the rotating disk (38) is fixed near the edge. A toggle lever (39) is connected to the cavity, and a movable platform (34) is provided inside the cavity. One end of the toggle lever (39) is rotatably connected to the lower side of the movable platform (34). Vibration springs (35) are fixedly connected to the four corners of the lower end of the movable platform (34). The other ends of the four vibration springs (35) are fixedly connected to the bottom of the cavity. A placement rack (31) is fixedly connected to the upper end of the movable platform (34) through a support rod. Multiple U-shaped slots (33) are provided on one side of the placement rack (31). Test tubes (32) are provided inside the multiple U-shaped slots (33).

2. The online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line according to claim 1, characterized in that: A limiting groove (41) is provided on one side of the outer surface of the placement rack (31), and a rubber ring (4) is sleeved on the inner wall of the limiting groove (41).

3. The online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line according to claim 1, characterized in that: The inner walls of the multiple U-shaped slots (33) are all fixedly connected with protective layers (36), and the multiple protective layers (36) are all made of sponge.

4. The online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line according to claim 1, characterized in that: The upper end of the mounting platform (2) is provided with a placement groove (22). The mounting box (3) is placed in the placement groove (22). The four sides of the mounting box (3) are fitted with abutment plates (21). A damper (23) is fixedly connected to one side of each of the four abutment plates (21). One end of each of the four dampers (23) is fixedly connected to the inner wall of the placement groove (22). A buffer spring (24) is sleeved on the outer surface of each of the four dampers (23). The two ends of the buffer spring (24) are fixedly connected to one side of the abutment plate (21) and one side of the inner wall of the placement groove (22), respectively.

5. The online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line according to claim 1, characterized in that: A reinforcing rib (16) is fixedly connected at the lower corner of the L-shaped testing platform (11), and the reinforcing rib (16) is made of stainless steel.

6. The online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line according to claim 1, characterized in that: A storage frame (14) is installed on the other side of the upper end of the L-shaped testing platform (11) via a bracket, and a partition (15) is fixedly connected to the inner wall of the storage frame (14).

7. The online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line according to claim 6, characterized in that: A connecting plate (17) is fixedly connected to one side of the upper end of the storage frame (14), and a lighting lamp (18) is installed on one side of the connecting plate (17).

8. The online detection device for pesticide residues and heavy metals in a dehydrated vegetable production line according to claim 1, characterized in that: An L-shaped baffle (19) is fixedly connected to the corner of the upper edge of the L-shaped testing platform (11).

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