Extraction device for pesticide residue detection
By processing samples with crushing and stirring components and combining them with a vibrating filter design, the problems of low extraction efficiency and impurity clogging in existing devices have been solved, achieving efficient and accurate pesticide residue detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-03-27
AI Technical Summary
Existing extraction devices for pesticide residue detection lack effective sample pretreatment, resulting in low extraction efficiency and easy clogging of the filter, affecting the continuity and accuracy of detection.
The sample particles are crushed and thoroughly mixed with the solvent using a grinding and stirring assembly. Combined with a vibrating filter design, impurities are prevented from clogging the filter, ensuring the purity of the extract.
It improves the extraction efficiency of pesticide residues, ensures the purity of the extract and the accuracy of the test results, and reduces the complexity and cost of operation.
Smart Images
Figure CN224051743U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of pesticide residue detection, especially a pesticide residue detection extraction device. BACKGROUND
[0002] In the field of agricultural product safety detection, pesticide residue detection is crucial, and accurate and efficient extraction of pesticide residues is a key step to obtain accurate detection results.
[0003] However, the existing pesticide residue detection extraction device mostly lacks effective sample pretreatment link, and the sample to be detected is usually mixed with the extraction solvent directly in the original state, the sample particles are large, the contact area with the extraction solvent is limited, the pesticide residues are difficult to dissolve into the solvent, the extraction efficiency is reduced, the extraction time is prolonged, secondly, the traditional filter device is easy to be blocked by impurities, and the filter screen needs to be cleaned or replaced frequently, which not only increases the complexity and cost of operation, but also may cause the extraction process to be interrupted, affects the continuity and efficiency of detection, moreover, the blocked filter screen will make the filtering effect worse, and part of the impurities may enter the subsequent detection link with the extraction liquid, interfere with the accuracy of the detection result, in order to solve the above problems, the pesticide residue detection extraction device is provided. SUMMARY
[0004] The main purpose of the utility model is to provide a pesticide residue detection extraction device, which can effectively solve the problems in the background art.
[0005] To achieve the above purpose, the technical scheme adopted by the utility model is:
[0006] A pesticide residue detection extraction device, comprising a shell, the upper end of the shell is fixedly connected with a feeding port, the lower end of the shell is fixedly connected with a material collecting hopper, the lower end of the material collecting hopper is fixedly connected with a discharge pipe, a filter screen is arranged below the discharge pipe, a collection groove is arranged on the outer side of the filter screen, an extraction pipe is fixedly connected to one side of the collection groove, support legs are fixedly connected to the four corners of the shell, the collection groove is fixedly connected to the inner side of the four support legs, a material grinding assembly is arranged in the inner cavity of the shell, a stirring assembly is arranged below the material grinding assembly, and the stirring assembly is arranged in the inner cavity of the shell.
[0007] Preferably, the material rolling assembly comprises a driving motor, an installation block is fixedly connected to the outside of the driving motor, the installation block is fixedly installed at the front end of the shell, a first material rolling roller is fixedly connected to the output end of the driving motor, the first material rolling roller is rotatably connected to the inner wall of the shell, a first gear is fixedly connected to the rear end of the first material rolling roller, the first gear is arranged at the rear end of the shell, a second gear is engaged with the outside of the first gear, a second material rolling roller is fixedly connected to the front end of the second gear, the second material rolling roller is rotatably connected to the inner cavity of the shell, and the first material rolling roller and the second material rolling roller are hingedly designed.
[0008] Preferably, the stirring assembly comprises a rotating shaft, the rotating shaft is rotatably connected with the shell, a plurality of stirring rods are fixedly connected to the outside of the rotating shaft, the plurality of stirring rods are arranged in the inner cavity of the shell, a first transmission assembly is arranged at the front end of the rotating shaft, the first transmission assembly is arranged at the front end of the shell, and a second transmission assembly is arranged at the rear end of the rotating shaft.
[0009] Preferably, the first transmission assembly comprises a first driven wheel, the first driven wheel is fixedly connected to the outside of the rotating shaft, a first belt is sleeved with the outside of the first driven wheel, a first driving wheel is fixedly connected to the output end of the driving motor, and the first driving wheel is in transmission connection with the first driven wheel through the first belt.
[0010] Preferably, the filter screen is fixedly connected with a sliding block at two sides, the inner side of the collecting groove is provided with two sliding grooves corresponding to the sliding blocks, and the two sliding blocks are in sliding connection with the collecting groove through the corresponding sliding grooves.
[0011] Preferably, a plurality of elastic components are fixedly connected to the front end of the filter screen, the front ends of the plurality of elastic components are fixedly connected with the collecting groove, a second protruding block is fixedly connected to the rear end of the filter screen, a disc is rotatably connected to the rear end of the collecting groove, a first protruding block is fixedly connected to the front end of the disc, and the first protruding block and the second protruding block are in intermittent contact.
[0012] Preferably, the second transmission assembly comprises a second driving wheel, the second driving wheel is fixedly connected to the outside of the rotating shaft, a second belt is sleeved with the outside of the second driving wheel, a second driven wheel is fixedly connected to the rear end of the disc, and the second driving wheel is in transmission connection with the second driven wheel through the second belt.
[0013] Compared with the prior art, the utility model has the advantages of the following:
[0014] 1. The extraction device for pesticide residue detection, the output end of the driving motor drives the first grinding roller to rotate, the first grinding roller rotates to drive the first gear to rotate, and then the second gear drives the second grinding roller to rotate in reverse, so that the entering sample can be crushed during the rotation of the second gear and the second grinding roller, the sample particles are made smaller, the contact area with the extraction solvent is increased, the extraction efficiency is improved, the output end of the driving motor also drives the first driving wheel to rotate, and through the transmission cooperation between the first belt and the first driven wheel, the rotating shaft can conveniently drive multiple stirring rods to stir the crushed sample and the added extraction solvent, so that the two are fully mixed, and the pesticide residues in the sample can be fully extracted into the solvent.
[0015] 2. The extraction device for pesticide residue detection, the second driving wheel is also driven to rotate while the rotating shaft rotates, and through the transmission cooperation of the second belt and the second driven wheel, the disc drives the first protrusion to rotate, and then intermittently contacts the second protrusion at the rear end of the filter screen, and through the sliding connection of the sliding blocks on both sides of the filter screen in the sliding groove on the inner side of the collection tank, and the elastic cooperation of the multiple elastic assemblies at the front end of the filter screen, the filter screen can be repeatedly vibrated on the inner side of the collection tank, such vibration can prevent impurities from blocking the filter screen, ensure the filtering effect, effectively separate impurities, make the extraction liquid more pure, reduce the interference of impurities on the subsequent pesticide residue detection result, and protect the accuracy of detection. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a whole structure schematic view of the extraction device for pesticide residue detection of the utility model Figure 1 ;
[0017] Figure 2 It is a whole structure schematic view of the extraction device for pesticide residue detection of the utility model Figure 2 ;
[0018] Figure 3 It is a whole structure sectional view of the extraction device for pesticide residue detection of the utility model;
[0019] Figure 4 It is a partial structure schematic view of the extraction device for pesticide residue detection of the utility model;
[0020] Figure 5 It is an enlarged structure schematic view of A of the extraction device for pesticide residue detection of the utility model.
[0021] In the figure: 1, the shell; 2, feed inlet; 3, collecting hopper; 4, discharge pipe; 5, support leg; 6, collection tank; 7, filter screen; 8, extraction pipe; 9, drive motor; 10, mounting block; 11, first roller; 12, first gear; 13, second gear; 14, second roller; 15, first driving wheel; 16, first belt; 17, first driven wheel; 18, rotating shaft; 19, stirring rod; 20, second driving wheel; 21, second belt; 22, second driven wheel; 23, disc; 24, first lug; 25, second lug; 26, sliding block; 27, elastic assembly. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.
[0023] As Figures 1-5 shown, an extraction device for pesticide residue detection, including shell 1, the upper end of shell 1 is fixedly connected with feed inlet 2, the lower end of shell 1 is fixedly connected with collecting hopper 3, the lower end of collecting hopper 3 is fixedly connected with discharge pipe 4, the lower portion of discharge pipe 4 is provided with filter screen 7, the outer side of filter screen 7 is provided with collection tank 6, one side of collection tank 6 is fixedly connected with extraction pipe 8, the four corners of shell 1 are all fixedly connected with support leg 5, collection tank 6 is fixedly connected on the inner side of four support legs 5, the inner chamber of shell 1 is provided with roller assembly, the lower portion of roller assembly is provided with stirring assembly, and stirring assembly is arranged in the inner chamber of shell 1.
[0024] In the embodiment, the roller assembly includes drive motor 9, the outer side of drive motor 9 is fixedly connected with mounting block 10, mounting block 10 is fixedly installed at the front end of shell 1, the output end of drive motor 9 is fixedly connected with first roller 11, first roller 11 is rotatably connected on the inner wall of shell 1, the rear end of first roller 11 is fixedly connected with first gear 12, first gear 12 is arranged at the rear end of shell 1, the outer side of first gear 12 is engaged with second gear 13, the front end of second gear 13 is fixedly connected with second roller 14, second roller 14 is rotatably connected in the inner chamber of shell 1, and first roller 11 and second roller 14 are designed to be hinged.
[0025] Specifically, the sample to be detected and extraction solvent feed inlet 2 are injected into the device, at this time, drive motor 9 is started, the output end of drive motor 9 drives first roller 11 to rotate, first roller 11 rotates to drive first gear 12 to rotate, and then second gear 13 drives second roller 14 to rotate in reverse, in the process of rotating second gear 13 and second roller 14, the entering sample can be crushed to make the sample particles smaller, increase the contact area with the extraction solvent and improve the extraction efficiency.
[0026] In this embodiment, the stirring assembly comprises a rotating shaft 18, which is rotatably connected with the shell 1. The rotating shaft 18 is fixedly connected with a plurality of stirring rods 19 on the outside thereof. The plurality of stirring rods 19 are arranged in the inner cavity of the shell 1. The front end of the rotating shaft 18 is provided with a first transmission assembly, which is arranged at the front end of the shell 1. The rear end of the rotating shaft 18 is provided with a second transmission assembly, which is arranged at the rear end of the shell 1. The first transmission assembly comprises a first driven wheel 17, which is fixedly connected to the outside of the rotating shaft 18. The outside of the first driven wheel 17 is sleeved with a first belt 16. The output end of the driving motor 9 is fixedly connected with a first driving wheel 15. The first driving wheel 15 is in transmission connection with the first driven wheel 17 through the first belt 16.
[0027] Specifically, when the driving motor 9 is started, the output end of the driving motor 9 also drives the first driving wheel 15 to rotate. Through the transmission cooperation between the first belt 16 and the first driven wheel 17, the rotating shaft 18 can conveniently drive the plurality of stirring rods 19 to stir the crushed sample and the added extraction solvent, so as to fully mix them, thereby extracting the pesticide residues in the sample into the solvent.
[0028] In this embodiment, the filter screen 7 is fixedly connected with a sliding block 26 on both sides thereof. The inner side of the collecting groove 6 is provided with two sliding grooves corresponding to the sliding blocks 26. The two sliding blocks 26 are in sliding connection with the collecting groove 6 through the corresponding sliding grooves. The front end of the filter screen 7 is fixedly connected with a plurality of elastic components 27. The front ends of the plurality of elastic components 27 are fixedly connected with the collecting groove 6. The rear end of the filter screen 7 is fixedly connected with a second protruding block 25. The rear end of the collecting groove 6 is rotatably connected with a disc 23. The front end of the disc 23 is fixedly connected with a first protruding block 24. The first protruding block 24 is in intermittent contact with the second protruding block 25. The second transmission assembly comprises a second driving wheel 20, which is fixedly connected to the outside of the rotating shaft 18. The outside of the second driving wheel 20 is sleeved with a second belt 21. The rear end of the disc 23 is fixedly connected with a second driven wheel 22. The second driving wheel 20 is in transmission connection with the second driven wheel 22 through the second belt 21.
[0029] Specific, by opening the valve outside the discharge pipe 4, can be easily realized mixed liquid fall on the lower filter screen 7, in the rotating shaft 18 rotates at the same time will also drive the second driving wheel 20 rotation, in through the transmission matching of second belt 21 and second driven wheel 22, can realize disc 23 drive first protruding block 24 rotation, then with the second protruding block 25 intermittent contact in the rear end of filter screen 7, in through the sliding block 26 sliding connection in the slide groove in the inside of collecting tank 6 of both sides of filter screen 7, and the elastic matching of multiple elastic components 27 in the front end of filter screen 7, can be easily realized filter screen 7 in the inside of collecting tank 6 repeatedly vibration, this kind of vibration can prevent impurities block filter screen 7, guarantee the filtering effect, make the extraction liquid smoothly through filter screen 7 into collecting tank 6.
[0030] It should be noted that the utility model is a kind of pesticide residue detection with extraction device, user injects the sample to be detected and extraction solvent feed inlet 2 into device interior, at this time, start drive motor 9, the output end of drive motor 9 will drive first grinding roller 11 rotation, first grinding roller 11 rotation will drive first gear 12 rotation, further realize second gear 13 drive second grinding roller 14 reverse rotation, in the process of second gear 13 and second grinding roller 14 rotation can be crushed into sample entering processing, make sample particle smaller, increase subsequent contact area with extraction solvent, improve extraction efficiency, while starting drive motor 9, the output end of drive motor 9 will also drive first driving wheel 15 rotation, in through the transmission matching between first belt 16 and first driven wheel 17, can be easily realized rotating shaft 18 drive multiple stirring rods 19 to the crushed sample falling and the extraction solvent added are stirred, make both fully mixed, so that the pesticide residue in sample is extracted into solvent, open the valve outside the discharge pipe 4, can be easily realized mixed liquid fall on the lower filter screen 7, in the rotating shaft 18 rotates at the same time will also drive the second driving wheel 20 rotation, in through the transmission matching of second belt 21 and second driven wheel 22, can realize disc 23 drive first protruding block 24 rotation, then with the second protruding block 25 intermittent contact in the rear end of filter screen 7, in through the sliding block 26 sliding connection in the slide groove in the inside of collecting tank 6 of both sides of filter screen 7, and the elastic matching of multiple elastic components 27 in the front end of filter screen 7, can be easily realized filter screen 7 in the inside of collecting tank 6 repeatedly vibration, this kind of vibration can prevent impurities block filter screen 7, guarantee the filtering effect, make the extraction liquid smoothly through filter screen 7 into collecting tank 6, then in through the extraction pipe 8 of one side of collecting tank 6 the extraction liquid is exported, to carry out pesticide residue detection subsequently, more practical.
[0031] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. An extraction device for pesticide residue detection comprising a housing (1), characterized in that: The upper end of the shell (1) is fixedly connected with a feeding port (2), the lower end of the shell (1) is fixedly connected with a collecting hopper (3), the lower end of the collecting hopper (3) is fixedly connected with a discharge pipe (4), the lower side of the discharge pipe (4) is provided with a filter screen (7), the outer side of the filter screen (7) is provided with a collecting groove (6), one side of the collecting groove (6) is fixedly connected with an extraction pipe (8), the four corners of the shell (1) are all fixedly connected with supporting legs (5), the collecting groove (6) is fixedly connected to the inner side of the four supporting legs (5), the inner cavity of the shell (1) is provided with a grinding assembly, the lower side of the grinding assembly is provided with a stirring assembly, and the stirring assembly is arranged in the inner cavity of the shell (1).
2. The extraction device for pesticide residue detection according to claim 1, characterized in that: The grinding assembly comprises a driving motor (9), the outer side of the driving motor (9) is fixedly connected with a mounting block (10), the mounting block (10) is fixedly mounted at the front end of the shell (1), the output end of the driving motor (9) is fixedly connected with a first grinding roller (11), the first grinding roller (11) is rotatably connected to the inner wall of the shell (1), the rear end of the first grinding roller (11) is fixedly connected with a first gear (12), the first gear (12) is arranged at the rear end of the shell (1), the outer side of the first gear (12) is engaged with a second gear (13), the front end of the second gear (13) is fixedly connected with a second grinding roller (14), the second grinding roller (14) is rotatably connected to the inner cavity of the shell (1), and the first grinding roller (11) and the second grinding roller (14) are designed to be hinged.
3. The extraction device for pesticide residue detection according to claim 2, characterized in that: The stirring assembly comprises a rotating shaft (18), the rotating shaft (18) is rotatably connected with the shell (1), the outer side of the rotating shaft (18) is fixedly connected with a plurality of stirring rods (19), the plurality of stirring rods (19) are all arranged in the inner cavity of the shell (1), the front end of the rotating shaft (18) is provided with a first transmission assembly, the first transmission assembly is arranged at the front end of the shell (1), and the rear end of the rotating shaft (18) is provided with a second transmission assembly, the second transmission assembly is arranged at the rear end of the shell (1).
4. The extraction device for pesticide residue detection according to claim 3, characterized in that: The first transmission assembly comprises a first driven wheel (17), the first driven wheel (17) is fixedly connected to the outer side of the rotating shaft (18), the outer side of the first driven wheel (17) is sleeved with a first belt (16), the output end of the driving motor (9) is fixedly connected with a first driving wheel (15), and the first driving wheel (15) is in transmission connection with the first driven wheel (17) through the first belt (16).
5. The extraction device for pesticide residue detection according to claim 3, characterized in that: Both sides of the filter screen (7) are fixedly connected with sliding blocks (26), the inner side of the collecting groove (6) is provided with two sliding grooves corresponding to the sliding blocks (26), and the two sliding blocks (26) are in sliding connection with the collecting groove (6) through the corresponding sliding grooves.
6. The extraction device for pesticide residue detection according to claim 5, characterized in that: A plurality of elastic components (27) are fixedly connected to the front end of the filter screen (7), the front ends of the plurality of elastic components (27) are fixedly connected with the collecting groove (6), the rear end of the filter screen (7) is fixedly connected with a second protrusion (25), the rear end of the collecting groove (6) is rotatably connected with a disc (23), the front end of the disc (23) is fixedly connected with a first protrusion (24), and the first protrusion (24) intermittently contacts the second protrusion (25).
7. The extraction device for pesticide residue detection according to claim 6, characterized in that: The second transmission assembly comprises a second driving wheel (20) fixedly connected to the outer side of the rotating shaft (18), a second belt (21) sleeved on the outer side of the second driving wheel (20), and a second driven wheel (22) fixedly connected to the rear end of the disc (23), and the second driving wheel (20) is in transmission connection with the second driven wheel (22) through the second belt (21).