Extraction device for food pesticide residue detection

Abstract

The utility model discloses an extraction device for food pesticide residue detection, which comprises a mounting rack, an extraction device is arranged on the mounting rack, a mounting bin and a guide bin are detachably arranged on the mounting rack, clamping devices are arranged on the mounting bin and the guide bin, and each clamping device comprises a clamping sleeve, a release sleeve, a clamping rod, a movable groove, a clamping groove, a release ball and a release groove. The clamping groove is formed in the outer side of the clamping rod, the release ball is installed in the movable groove, the movable groove is formed in the side wall of the clamping sleeve, the release groove is formed in the release sleeve, a reinforcing mechanism is arranged on the outer side of the clamping sleeve and comprises a linkage hole, a linkage spring, a linkage rod and a linkage plate, the linkage hole is formed in the linkage plate, the linkage rod is sleeved with the linkage spring, and the linkage rod is sleeved with the linkage spring. According to the utility model, not only are the problems of low efficiency, tedious disassembly and assembly and unstable connection of traditional manual extraction solved, but also the efficiency and accuracy of detection work are remarkably improved through a multiple filtering mechanism and a reliable locking structure.

Description

Technical Field

[0001] This utility model relates to the field of food pesticide residue detection technology, and more specifically, it relates to an extraction device for food pesticide residue detection. Background Technology

[0002] In the field of extraction devices for pesticide residue detection in food, the degree of automation of the extraction operation, the ease of disassembly and assembly of components, and the stability of the connection structure are key factors affecting the effectiveness of use. However, the extraction devices for pesticide residue detection currently on the market still have many technical defects in practical applications. These problems not only affect the efficiency of the detection work, but may also reduce the accuracy of the detection results and the safety of use.

[0003] The primary problem is the significant lack of automation in the extraction process. Existing extraction methods have significant drawbacks: First, the traditional manual crushing method requires operators to exert a great deal of physical strength, increasing labor intensity; second, the unevenness of manual operation may lead to insufficient sample extraction, affecting test results; third, manual operation is inefficient and cannot meet the timeliness requirements of batch testing. These shortcomings of the traditional extraction method not only reduce testing efficiency but may also lead to unstable extraction quality due to operator fatigue, failing to meet the accuracy requirements of modern pesticide residue testing.

[0004] More notably, there are significant drawbacks in the ease of component disassembly and assembly. Existing disassembly and assembly methods have significant operational problems: First, the complex disassembly and assembly structure requires the use of various specialized tools, increasing maintenance preparation time; when cleaning or maintenance of components is required, or when corresponding components need to be replaced, the cumbersome disassembly and assembly steps extend the cleaning and maintenance cycle; secondly, the connection method between components is not user-friendly, increasing the difficulty of operation. These shortcomings of traditional disassembly and assembly methods affect the efficiency of daily maintenance.

[0005] Most critically, the stability of the connection structure is seriously insufficient. Although some equipment has achieved quick assembly and disassembly through structural improvements, this design still has obvious defects: First, vibration is inevitable during equipment operation, and the simple connection structure cannot withstand the continuous vibration during equipment operation. After long-term use, the connection is prone to loosening, and the fixation between components is not firm enough, posing a risk of falling off. This structural design deficiency not only affects the operational stability of the equipment, but may also cause safety accidents due to component detachment, reducing the reliability of the testing work. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides an extraction device for detecting pesticide residues in food, so as to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: an extraction device for detecting pesticide residues in food, comprising a mounting frame, on which an extraction device is mounted. The mounting frame is detachably provided with an installation chamber and a guide chamber. Both the installation chamber and the guide chamber are provided with a locking device. The locking device includes a locking sleeve, a release sleeve, a locking rod, a movable groove, a locking groove, release balls, and a release groove. The locking sleeve is detachably fitted onto the outside of the locking rod. The release sleeve is slidably fitted onto the outside of the locking sleeve. The locking groove is located on the outside of the locking rod. Multiple release balls are rotatably mounted in the movable groove. The movable groove is located on the side wall of the locking sleeve. The release groove is located inside the release sleeve. A reinforcing mechanism is provided on the outside of the locking sleeve. The reinforcing mechanism includes linkage holes, linkage springs, linkage rods, and linkage plates. Multiple linkage holes are located on the linkage plate. The linkage springs are movably fitted onto the outside of the linkage rods. Multiple linkage rods are fixedly connected to one side of the release sleeve. The linkage plate is rotatably mounted on the outside of the locking sleeve.

[0010] The present invention is further configured such that the extraction device includes a motor, a rotating block, a sliding rod, a moving rod, a fixed block, a moving block, a connecting rod, a connecting block, and an extraction block. The motor is detachably mounted on one side of the mounting frame, and the output end of the motor passes through the mounting frame and is connected to the axis of the rotating block. The rotating block is rotatably mounted on the other side of the mounting frame. The two ends of the moving rod are rotatably connected to the rotating block and the moving block, respectively. The sliding rod is fixedly mounted between the fixed block and the connecting block. Both the fixed block and the connecting block are detachably mounted on one side of the mounting frame. The connecting rod is mounted on the lower side of the moving block. The extraction block is fixedly mounted on the bottom end of the connecting rod. The moving block and the sliding rod are slidably connected.

[0011] The present invention is further configured such that the guide chamber is detachably installed on one side of the mounting frame, the guide chamber is detachably provided with a coarse filter chamber, the mounting chamber is detachably provided with a fine filter chamber, the mounting frame is detachably provided with an extraction chamber, the mounting chamber is detachably installed above the extraction chamber, and a collection bucket is provided below the extraction chamber.

[0012] The present invention is further provided with a detachable sealing ring between the installation chamber and the extraction chamber, and the sealing ring ensures the sealing performance of the connection.

[0013] The present invention is further provided with a detachable gasket between the installation chamber and the extraction chamber. The gasket is detachably sleeved on the outside of the locking rod, and the gasket makes the installation more stable.

[0014] The present invention is further configured such that the movable groove has a concave structure design, that is, the release ball can roll out to the outside but cannot roll out from the inside, thus ensuring the stability of the release ball in use.

[0015] The present invention is further configured such that the diameter of the linkage hole is slightly larger than the diameter of the linkage rod, ensuring that the linkage rod can be stably inserted into the linkage hole.

[0016] The present invention is further configured such that one end of the linkage spring is connected to the release sleeve, and the other end of the linkage spring is connected to the linkage plate in a contact manner. The contact design between the linkage spring and the linkage plate makes the cooperation between the components more reasonable.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides an extraction device for detecting pesticide residues in food, which has the following beneficial effects:

[0019] 1. The extraction device, through the precise coordination of components such as the motor, rotating block, moving rod, and extraction block, constructs a highly efficient automated extraction system. The power output of the motor is transmitted through the rotating block, driving the moving rod and extraction block to hammer up and down, achieving rapid crushing of agricultural products. This design not only significantly reduces the physical exertion of operators but also ensures the sufficiency of sample extraction through uniform hammering, significantly improving detection efficiency. At the same time, the dual filtration mechanism of the fine and coarse filtration chambers ensures the purity of the juice and improves the accuracy of the test results.

[0020] 2. The snap-fit ​​device, through the ingenious design of components such as the snap-fit ​​sleeve, release sleeve, and release ball, constructs a convenient disassembly and assembly system. The cooperation between the snap-fit ​​sleeve and the snap-fit ​​rod provides a convenient fixing effect, while the sliding mechanism of the release sleeve and the rolling design of the release ball enable quick disassembly and assembly. This structure not only simplifies the connection and disassembly operations between components, avoiding the use of professional tools, but also makes the disassembly and assembly process smoother through the cooperation of the movable groove and the release groove, greatly improving the efficiency of cleaning and maintenance, and effectively solving the problem of cumbersome traditional disassembly and assembly methods.

[0021] 3. The reinforcement mechanism constructs a stable locking system through the coordinated action of components such as linkage holes, linkage springs, and linkage plates. The cooperation between the linkage holes and linkage rods ensures the stable position of the release sleeve, the preload of the linkage springs provides additional support, and the rotation design of the linkage plates enables flexible locking and releasing. This structure not only enhances the stability of the connection structure through the locking mechanism, but also prevents components from loosening and falling off during use, significantly improving the operational stability and safety of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an extraction device for detecting pesticide residues in food according to the present invention;

[0023] Figure 2This is a schematic diagram of the structure in the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the rotating block and connecting block in this utility model;

[0025] Figure 4 This is a schematic diagram of the snap-fit ​​device and the reinforcing mechanism in this utility model;

[0026] Figure 5 This is a cross-sectional structural diagram of the snap-fit ​​device and the reinforcing mechanism in this utility model.

[0027] In the diagram: 1. Mounting frame; 2. Mounting chamber; 3. Guide chamber; 4. Locking sleeve; 5. Release sleeve; 6. Locking rod; 7. Movable groove; 8. Locking groove; 9. Release ball; 10. Release groove; 11. Linkage hole; 12. Linkage spring; 13. Linkage rod; 14. Linkage plate; 15. Motor; 16. Rotating block; 17. Slide rod; 18. Moving rod; 19. Fixed block; 20. Moving block; 21. Connecting rod; 22. Connecting block; 23. Extraction block; 24. Coarse filter chamber; 25. Fine filter chamber; 26. Extraction chamber; 27. Collection bucket; 28. Sealing ring; 29. ​​Gasket. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figures 1-5An extraction device for detecting pesticide residues in food includes a mounting frame 1, on which the extraction device is mounted. The mounting frame 1 is detachably equipped with an installation chamber 2 and a guide chamber 3. Both the installation chamber 2 and the guide chamber 3 are equipped with locking devices, each including a locking sleeve 4, a release sleeve 5, a locking rod 6, a movable groove 7, a locking groove 8, a release ball 9, and a release groove 10. The locking sleeve 4 is detachably fitted onto the outside of the locking rod 6, the release sleeve 5 is slidably fitted onto the outside of the locking sleeve 4, and the locking groove 8 is located on the outside of the locking rod 6. Multiple release balls 9 are rolled in the movable groove 7, which is opened on the side wall of the locking sleeve 4. The release groove 10 is opened inside the release sleeve 5. A reinforcement mechanism is provided on the outside of the locking sleeve 4. The reinforcement mechanism includes a linkage hole 11, a linkage spring 12, a linkage rod 13 and a linkage plate 14. Multiple linkage holes 11 are opened on the linkage plate 14. The linkage spring 12 is movably sleeved on the outside of the linkage rod 13. Multiple linkage rods 13 are fixedly connected to one side of the release sleeve 5. The linkage plate 14 is rotatably installed on the outside of the locking sleeve 4.

[0032] The extraction device includes a motor 15, a rotating block 16, a slide rod 17, a moving rod 18, a fixed block 19, a moving block 20, a connecting rod 21, a connecting block 22, and an extraction block 23. The motor 15 is detachably mounted on one side of the mounting frame 1. The output end of the motor 15 passes through the mounting frame 1 and is connected to the shaft of the rotating block 16. The rotating block 16 is rotatably mounted on the other side of the mounting frame 1. The two ends of the moving rod 18 are rotatably connected to the rotating block 16 and the moving block 20, respectively. The slide rod 17 is fixedly mounted between the fixed block 19 and the connecting block 22. Both the fixed block 19 and the connecting block 22 are detachably mounted on one side of the mounting frame 1. The connecting rod 21 is mounted on the lower side of the moving block 20. The extraction block 23 is fixedly mounted on the bottom end of the connecting rod 21. The moving block 20 is slidably connected to the slide rod 17.

[0033] The guide chamber 3 is detachably installed on one side of the mounting frame 1. The guide chamber 3 is detachably equipped with a coarse filter chamber 24. The mounting chamber 2 is detachably equipped with a fine filter chamber 25. The mounting frame 1 is detachably equipped with an extraction chamber 26. The mounting chamber 2 is detachably installed above the extraction chamber 26. A collection bucket 27 is provided below the extraction chamber 26.

[0034] A sealing ring 28 is detachably provided between the installation chamber 2 and the extraction chamber 26.

[0035] In this embodiment, when pesticide residue testing is required on food, the agricultural product to be tested is first placed into the coarse filter chamber 24. Then, the motor 15 installed on one side of the mounting frame 1 is turned on. The motor 15 drives the rotating block 16 connected to the output end to rotate. The rotating block 16 then drives the moving rod 18 to move. Since one end of the moving rod 18 is rotatably connected to the rotating block 16, and the moving rod 18 is connected outside the center of the rotating block 16, the top end of the moving rod 18 moves around the axis of the rotating block 16. Then, the bottom end of the moving rod 18 drives the moving block 20 along the sliding path provided between the fixed block 19 and the connecting block 22. The rod 17 slides up and down, and then the moving block 20 drives the extraction block 23 at the bottom to move up and down through the connecting rod 21. This causes the extraction block 23 to hammer the agricultural products placed in the coarse filtration chamber 24, breaking them down. The juice of the agricultural products mixed with the small pieces then enters the guide chamber 3 through the coarse filtration chamber 24. The juice is then guided by the inner wall of the guide chamber 3 into the fine filtration chamber 25 set in the installation chamber 2. After being filtered by the fine filtration chamber 25, the small pieces are retained in the fine filtration chamber 25. The juice then flows through the installation chamber 2 and the extraction chamber 26 into the collection bucket 27 set below, thus realizing the extraction work.

[0036] Please see Figure 4 and Figure 5 As a further implementation of the overall equipment: a gasket 29 is detachably provided between the installation chamber 2 and the extraction chamber 26, and the gasket 29 is detachably sleeved on the outside of the locking rod 6.

[0037] The active groove 7 has a concave structure design, meaning that the release ball 9 can roll out to the outside, but roll out from the inside.

[0038] The diameter of linkage hole 11 is slightly larger than the diameter of linkage rod 13.

[0039] One end of the linkage spring 12 is connected to the release sleeve 5, and the other end of the linkage spring 12 is connected to the linkage plate 14 in contact.

[0040] More specifically, when cleaning and maintenance of internal components is required, first rotate the linkage plate 14, causing the linkage plate 14 to drive multiple linkage holes 11 to rotate. When the linkage holes 11 rotate to a position concentric with the linkage rod 13, push the release sleeve 5 upward. The release sleeve 5 will cause multiple linkage rods 13 to slide into the linkage holes 11, and the release sleeve 5 will cooperate with the linkage plate 14 to compress the linkage spring 12 sleeved on the outside of the linkage rod 13. At the same time, the release sleeve 5 will drive the release groove 10 opened on the inner side to move upward. When the linkage spring 12 is compressed to the limit, the release groove 10 moves to the position corresponding to the release ball 9. Then, pull the locking sleeve 4 and locking rod 6 to both sides respectively. Then, the inner wall of the locking groove 8 presses against the outer wall of the release ball 9. Since the release ball 9 is a spherical structure, it will be pressed outward, causing it to roll in the movable groove 7 and outward. Then, part of the release ball 9 will roll into the release groove 10, while the other part will remain in the movable groove 7. Then, completely remove the locking sleeve 4 and locking rod 6, and then remove the other locking sleeves 4 and locking rods 6 one by one. Then, remove the coarse filter chamber 24, then remove the guide chamber 3, and then remove the fine filter chamber 25 from the installation chamber 2. Then, remove the installation chamber 2, and finally remove the extraction chamber 26. Clean each of them one by one. If necessary, replace the coarse filter chamber 24 and the fine filter chamber 25. Then, reinstall the above components back into their original positions. Then, pass the locking rod 6 through the corresponding reserved installation hole from the bottom end, and then fit the locking sleeve 4 onto the outside of the locking rod 6 from the top. Then, release the release sleeve 5. The linkage spring 12 pushes the release sleeve 5 to slide back to its original position, so that the release sleeve 5 drives multiple linkage rods 13 to slide back to their original position. At the same time, the release sleeve 5 will drive the release groove 10 opened on the inner side to slide back to its original position. Due to the top of the release groove 10 The chamfered structure design allows the inner wall of the release groove 10 to press against the outer wall of the release ball 9, causing the release ball 9 to roll inward along the movable groove 7. This results in a portion of the release ball 9 being engaged in the locking groove 8. After the linkage spring 12 is fully reset, the linkage plate 14 continues to rotate, causing the linkage plate 14 to rotate the linkage hole 11 to a position that does not correspond to the linkage rod 13. The linkage plate 14 then provides support for the release sleeve 5. Combined with the pre-tightening force applied to the release sleeve 5 by the linkage spring 12, this effectively prevents the release sleeve 5 from moving easily, thus ensuring the stability of the installation structure and, consequently, the stable operation of the extraction process.

[0041] In summary, when using or operating the overall equipment: First, the agricultural product to be tested is placed into the coarse filter chamber 24. Then, the motor 15 installed on one side of the mounting frame 1 is turned on. The motor 15 drives the rotating block 16 connected to the output end to rotate. The rotating block 16 then drives the moving rod 18 to move. Since one end of the moving rod 18 is rotatably connected to the rotating block 16, and the moving rod 18 is connected outside the center of the rotating block 16, the top of the moving rod 18 moves around the axis of the rotating block 16. The bottom of the moving rod 18 then drives the moving block 20 along the path between the fixed block 19 and the connecting block 22. The sliding rod 17 slides up and down, and the moving block 20 moves the extraction block 23 at the bottom up and down through the connecting rod 21. The extraction block 23 hammers the agricultural products placed in the coarse filter chamber 24, breaking them down. The juice of the agricultural products mixed with the small pieces enters the guide chamber 3 through the coarse filter chamber 24, and then enters the fine filter chamber 25 set in the installation chamber 2 through the inner wall of the guide chamber 3. After being filtered by the fine filter chamber 25, the small pieces are retained in the fine filter chamber 25. Then the juice flows through the installation chamber 2 and the extraction chamber 26 into the collection bucket 27 set below, thus realizing the extraction work.

[0042] When internal components need cleaning and maintenance, first rotate the linkage plate 14, causing it to rotate multiple linkage holes 11. When the linkage holes 11 rotate to a position concentric with the linkage rods 13, push the release sleeve 5 upward. The release sleeve 5 will cause multiple linkage rods 13 to slide into the linkage holes 11, and the release sleeve 5 will cooperate with the linkage plate 14 to compress the linkage springs 12 sleeved on the outside of the linkage rods 13. At the same time, the release sleeve 5 will cause the release groove 10 on the inner side to move upward. When the linkage spring 12 is compressed to its limit, the release groove 10 moves to the position corresponding to the release ball 9, and then... The locking sleeve 4 and locking rod 6 are pulled to both sides respectively. Then, the inner wall of the locking groove 8 presses against the outer wall of the release ball 9. Since the release ball 9 has a spherical structure design, it will be pressed outward, causing it to roll in the movable groove 7 and outward. Part of the release ball 9 will roll into the release groove 10, while the other part will remain in the movable groove 7. Then, the locking sleeve 4 and locking rod 6 are completely removed. Then, the other locking sleeves 4 and locking rods 6 are removed one by one. Then, the coarse filter chamber 24 is removed, the guide chamber 3 is removed, and the fine filter chamber 25 is taken out of the installation chamber 2. Then remove the installation chamber 2, and finally remove the extraction chamber 26. Clean each of them. If necessary, replace the coarse filter chamber 24 and the fine filter chamber 25. Then reinstall the above components back into their original positions. Then pass the locking rod 6 through the corresponding reserved installation hole from the bottom, and then fit the locking sleeve 4 onto the outside of the locking rod 6 from the top. Then release the release sleeve 5. The linkage spring 12 pushes the release sleeve 5 to slide back to its original position, so that the release sleeve 5 drives multiple linkage rods 13 to slide back to their original position. At the same time, the release sleeve 5 will drive the release groove 10 opened on the inner side to slide back to its original position. Due to the inverted top of the release groove 10 The corner structure design allows the inner wall of the release groove 10 to press against the outer wall of the release ball 9, causing the release ball 9 to roll inward along the movable groove 7. This results in a portion of the release ball 9 being engaged in the locking groove 8. After the linkage spring 12 is fully reset, the linkage plate 14 continues to rotate, causing the linkage plate 14 to rotate the linkage hole 11 to a position that does not correspond to the linkage rod 13. Then, the linkage plate 14 provides support for the release sleeve 5. Combined with the pre-tightening force applied to the release sleeve 5 by the linkage spring 12, this effectively prevents the release sleeve 5 from moving easily, thus ensuring the stability of the installation structure and ensuring the stable operation of the extraction.

[0043] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A foodstuff extraction device for detecting pesticide residues, comprising a mounting frame (1), characterised in that: The mounting frame (1) is provided with an extraction device, the mounting frame (1) is detachably provided with a mounting bin (2) and a guide bin (3), the mounting bin (2) and the guide bin (3) are provided with clamping devices, the clamping device comprises a clamping sleeve (4), a release sleeve (5), a clamping rod (6), a movable slot (7), a clamping slot (8), a release ball (9) and a release slot (10), the clamping sleeve (4) is detachably sleeved outside the clamping rod (6), the release sleeve (5) is slidably sleeved outside the clamping sleeve (4), the clamping slot (8) is formed on the outer side of the clamping rod (6), a plurality of release balls (9) are rollingly installed in the movable slot (7), the movable slot (7) is formed in the side wall of the clamping sleeve (4), the release slot (10) is formed in the inside of the release sleeve (5), the outside of the clamping sleeve (4) is provided with a reinforcing mechanism, the reinforcing mechanism comprises a linkage hole (11), a linkage spring (12), a linkage rod (13) and a linkage plate (14), a plurality of linkage holes (11) are formed on the linkage plate (14), the linkage spring (12) is sleeved outside the linkage rod (13), a plurality of linkage rods (13) are connected on one side of the release sleeve (5), and the linkage plate (14) is rotatably installed outside the clamping sleeve (4).

2. The extraction device for detecting food agricultural residues according to claim 1, characterized in that: The extraction device comprises a motor (15), a rotating block (16), a sliding rod (17), a moving rod (18), a fixed block (19), a moving block (20), a connecting rod (21), a connecting block (22) and an extraction block (23), the motor (15) is detachably installed on one side of the mounting frame (1), the output end of the motor (15) penetrates the mounting frame (1) and is connected with the rotating block (16) in a shaft manner, the rotating block (16) is rotatably installed on the other side of the mounting frame (1), the moving rod (18) is rotatably connected with the rotating block (16) and the moving block (20) at both ends respectively, the sliding rod (17) is fixedly installed between the fixed block (19) and the connecting block (22), the fixed block (19) and the connecting block (22) are detachably installed on one side of the mounting frame (1), the connecting rod (21) is installed on the lower side of the moving block (20), the extraction block (23) is fixedly installed at the bottom end of the connecting rod (21), and the moving block (20) is slidably connected with the sliding rod (17).

3. The extraction device for detecting food agricultural residues according to claim 2, characterized in that: The guide bin (3) is detachably installed on one side of the mounting frame (1), the guide bin (3) is detachably provided with a coarse filter bin (24), the mounting bin (2) is detachably provided with a fine filter bin (25), the mounting frame (1) is detachably provided with an extraction bin (26), the mounting bin (2) is detachably installed above the extraction bin (26), and a collecting barrel (27) is arranged below the extraction bin (26).

4. The extraction device for detecting agricultural chemical residues in food according to claim 3, characterized by: A sealing ring (28) is detachably arranged between the mounting bin (2) and the extraction bin (26).

5. The extraction device for detecting food agricultural residues according to any one of claims 1-4, characterized in that: A gasket (29) is detachably arranged between the mounting bin (2) and the extraction bin (26), and the gasket (29) is detachably sleeved outside the clamping rod (6).

6. The extraction device for foodstuff and agricultural chemical residue detection according to claim 5, characterized in that: The movable slot (7) is designed in an inner recess structure.

7. The extraction device for detecting food agricultural residues according to claim 1, characterized in that: The diameter of the linkage hole (11) is slightly larger than the diameter of the linkage rod (13).

8. The extraction device for foodstuff and agricultural residue detection according to claim 7, characterized in that: One end of the linkage spring (12) is connected with the release sleeve (5), and the other end of the linkage spring (12) is contactively connected with the linkage plate (14).

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