Extraction device for detecting pesticide residues in food

Abstract

The present invention relates to the technical field of pesticide residue detection, and specifically to an extraction device for detecting pesticide residue in food, comprising a base, the top of the base is fixedly connected to two vertically arranged stands, the top of each of the stands is fixedly connected to a side fixing stand, a storage container is arranged between the two side fixing stands, the outer walls on both sides of the storage container are fixedly connected to arc-shaped side plates and arc-shaped racks distributed up and down, and both sides of the storage container are provided with a reciprocating drive structure. In the present invention, after reducing the exhaust volume of the regulating air valve, when the first spring compresses the telescopic airbag, the air inside the telescopic airbag can only be released slowly along the regulating air valve, which is suitable for crushing fruits and vegetables inside the storage container. After increasing the exhaust volume of the regulating air valve, when the first spring compresses the telescopic airbag, the air inside the telescopic airbag can be quickly released along the regulating air valve, which is suitable for quickly oscillating and mixing the sample inside the storage container.

Description

Technical Field

[0001] The present invention relates to the technical field of pesticide residue detection, and in particular to an extraction device for detecting pesticide residues in food. Background Art

[0002] With the development of agricultural industrialization, the production of agricultural products has become increasingly dependent on exogenous substances such as pesticides, antibiotics and hormones. The irrational use of these substances may lead to excessive pesticide residues in agricultural products, affecting consumers' food safety. In severe cases, it may cause consumers to become ill, develop abnormally, or even directly lead to poisoning and death. Excessive pesticide residues will also affect the trade of agricultural products.

[0003] The prior art discloses a rapid detection device and method for pesticide residues in food with authorization announcement number CN111650193B. A storage cavity is formed on the inner wall of an extraction tube, and an extrusion block that can extend or retract into the storage cavity is provided in the storage cavity; a vortex homogenization component includes a rotating rod and a whipping blade, and a receiving cavity for accommodating the whipping blade is formed in the rotating rod; by switching the state of the vortex homogenization component, pre-treatment of different fruits and vegetables to be tested is completed, and on the basis of effectively avoiding the need to carry a variety of pre-treatment devices, the pre-treatment efficiency and treatment quality are effectively improved, and at the same time, real-time detection is completed in combination with a detection and comparison mechanism, effectively achieving a fast, lightweight and easy-to-carry semi-quantitative detection effect.

[0004] However, in the pre-test process, the vegetables to be tested are crushed by rotating the beating blades, but the cutting of the beating blades cannot completely chop the vegetables, and there are certain blind spots for crushing, which makes it difficult to completely crush the vegetables and separate the pesticides inside the vegetables and fruits to the maximum extent. Moreover, when the crushed vegetables and fruits are stirred, it is difficult to stir them evenly because the vortex homogenizer directly rotates and stirs them. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose an extraction device for detecting pesticide residues in food.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A device for extracting food pesticide residues, comprising a base, wherein the top of the base is fixedly connected to two vertically arranged stands, the top of each of the stands is fixedly connected to a side fixing stand, a storage container is arranged between the two side fixing stands, both side outer walls of the storage container are fixedly connected to arc-shaped side plates and arc-shaped racks distributed up and down, both sides of the storage container are provided with reciprocating drive structures, the outer walls of the reciprocating drive structures are fixedly connected to the side fixing stands, the reciprocating drive structures are drivingly connected to the bottom of the arc-shaped racks, both sides of the top of the storage container are provided with elastic reset mechanisms, the elastic reset mechanisms The inside of the mechanism is fixedly connected with an arc-shaped baffle, the top surface of the arc-shaped baffle is movably connected to the bottom of the arc-shaped side plate, the middle part of the inner side of the arc-shaped baffle is slidably connected with a partition, the two sides of the partition are respectively fixedly connected with a first spring and a telescopic airbag, the ends of the first spring and the telescopic airbag away from the baffle are fixedly connected to the inner wall of the elastic reset mechanism, the bottom of the partition is fixedly connected to the middle part of the arc-shaped rack, the tops of the two side fixing frames are commonly connected with a top fixing frame, the bottom of the top fixing frame is fixedly connected with a telescopic rod, the lower end of the telescopic rod extends to the inner side of the storage container and is fixedly connected with an impact block;

[0008] The reciprocating drive structure includes a limit plate and an outer baffle plate, the limit plate is fixedly connected to the outer wall of the storage container, the outer baffle plate is fixedly connected to the side fixing frame, a circular groove is provided on the inner side of the limit plate, the circular groove is composed of two arc-shaped limit grooves connected end to end, and the center positions of the two arc-shaped grooves are the same, a gear is provided between the limit plate and the outer baffle plate, the gear is rotatably connected to a U-shaped frame through a set shaft rod, the U-shaped frame is slidably connected to the outer baffle plate, the bottom of the U-shaped frame is fixedly connected to an elastic sleeve, the lower end of the elastic sleeve is movably connected to a slide plate, the outer wall of the limit plate is provided with an oblique groove slidably connected to the slide plate, and a driving motor for driving the gear to rotate is installed on the outer baffle plate.

[0009] Preferably: the end of the telescopic airbag away from the partition is fixedly connected with a joint, the joint is connected with the interior of the telescopic airbag, the outer wall of the joint is fixedly connected with a one-way air intake valve for one-way air intake into the interior of the joint, the outer wall of the joint is fixedly connected with a regulating air valve, the regulating air valve is connected with the interior of the joint, and the regulating air valve is used to adjust the exhaust volume.

[0010] Preferably: the elastic sleeve comprises an outer sleeve, an inner sleeve and a second spring, the inner wall of the outer sleeve is slidably connected to the outer wall of the inner sleeve, the inner wall of the inner sleeve is fixedly connected to the second spring, and one end of the second spring away from the inner sleeve is fixedly connected to the inner wall of the outer sleeve.

[0011] Preferably, the upper end of the outer sleeve is fixedly connected to the bottom of the U-shaped frame, the lower end of the inner sleeve is fixedly connected to a connecting block, and the connecting block is rotatably connected to the slide plate.

[0012] Preferably: a vertically arranged slide groove is opened on the outer wall of the outer baffle, a slider is slidably connected to the inner wall of the slide groove, a plurality of vertically arranged limit slide columns are fixedly connected to the inner wall of the slide groove, the limit slide columns penetrate the slider and are slidably connected to the slider, and a driving motor for driving the gear to rotate is fixedly connected to the outer wall of one of the sliders.

[0013] Preferably, the centers of the arc-shaped side plates, the arc-shaped baffles and the arc-shaped rack are all on the same horizontal axis.

[0014] Preferably, a slag discharge valve and a liquid discharge valve are fixedly installed on both sides of the bottom of the storage container, and a filter screen is installed inside the liquid discharge valve.

[0015] Preferably, a plurality of rollers are fixedly mounted on the bottom of the arc-shaped side plate.

[0016] Compared with the existing technology, the present invention has the following beneficial effects:

[0017] 1. The reciprocating drive structure can drive the storage container to reciprocate, and the impact block is driven to reciprocate by the telescopic rod. The impact block crushes the fruits and vegetables inside the storage container. Compared with the crushing method of the crushing knife, the crushing method has no processing dead angle and the crushing is more uniform and sufficient;

[0018] 2. Driven by the reciprocating drive structure, the sample inside the storage container completes oscillation inside the storage container due to inertia, and is evenly mixed under the continuous movement of the storage container. Compared with rotary stirring, the present invention can separate the pesticides inside vegetables and fruits to the maximum extent;

[0019] 3. By setting the regulating air valve, after reducing the exhaust volume of the regulating air valve, when the first spring compresses the telescopic airbag, the air inside the telescopic airbag can only be released slowly along the regulating air valve, which is suitable for crushing the fruits and vegetables inside the storage container. After increasing the exhaust volume of the regulating air valve, when the first spring compresses the telescopic airbag, the air inside the telescopic airbag can be quickly released along the regulating air valve to quickly mix the sample inside the storage container. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of another direction of the present invention;

[0022] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0023] Figure 4It is a three-dimensional structural schematic diagram of the storage container of the present invention;

[0024] Figure 5 It is a schematic diagram of the positional relationship between the reciprocating drive structure and the elastic reset mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the internal structure of the elastic reset mechanism of the present invention;

[0026] Figure 7 The present invention Figure 6 A schematic diagram of the enlarged local structure at point A in the middle;

[0027] Figure 8 It is a schematic diagram of the installation position of the drive motor of the present invention;

[0028] Fig. 9 is a schematic cross-sectional structural diagram of the elastic sleeve of the present invention;

[0029] Fig.10 The present invention Fig. 9 A magnified schematic diagram of the local structure at point B in the middle.

[0030] In the figure: 1. base; 2. stand; 3. side fixing frame; 4. reciprocating drive structure; 5. elastic reset mechanism; 6. top fixing frame; 7. telescopic rod; 8. storage container; 9. impact block; 10. arc-shaped side plate; 11. roller; 12. arc-shaped baffle; 13. arc-shaped rack; 14. partition; 15. first spring; 16. telescopic airbag; 17. joint; 18. regulating air valve; 19. one-way air inlet valve; 20. limit plate; 21. circular groove; 22. gear; 23. U-shaped frame; 24. drive motor; 25. elastic sleeve; 26. slide plate; 27. inclined groove; 28. outer sleeve; 29. ​​inner sleeve; 30. second spring; 31. connecting block; 33. slag discharge valve; 34. drain valve; 35. outer baffle; 36. slide groove; 37. slider; 38. limit slide column. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Reference Figure 1-Figure 10 A device for extracting food pesticide residues comprises a base 1, the top of the base 1 is fixedly connected to two vertically arranged stands 2, the top of each stand 2 is fixedly connected to a side fixing frame 3, a storage container 8 is arranged between the two side fixing frames 3, the outer walls of both sides of the storage container 8 are fixedly connected to arcuate side plates 10 and arcuate racks 13 distributed up and down, reciprocating drive structures 4 are arranged on both sides of the storage container 8, the outer wall of the reciprocating drive structure 4 is fixedly connected to the side fixing frames 3, the reciprocating drive structure 4 is transmission-connected to the bottom of the arcuate rack 13, elastic reset mechanisms 5 are arranged on both sides of the top of the storage container 8, an arcuate baffle 12 is fixedly connected to the inside of the elastic reset mechanism 5, the top surface of the arcuate baffle 12 is movably connected to the bottom of the arcuate side plate 10, the arcuate side plate 10, the arcuate baffle 12 and the arcuate rack 13 are arranged on both sides of the top of the storage container 8 The centers of the circles of the arc-shaped racks 13 are all on the same horizontal axis, ensuring that the storage container 8 will move in accordance with the arc-shaped baffle 12 when moving. A partition 14 is slidably connected to the middle part of the inner side of the arc-shaped baffle 12, and the first spring 15 and the telescopic airbag 16 are fixedly connected on both sides of the partition 14. The ends of the first spring 15 and the telescopic airbag 16 away from the partition 14 are fixedly connected to the inner wall of the elastic reset mechanism 5, and the bottom of the partition 14 is fixedly connected to the middle part of the arc-shaped rack 13. The tops of the two side fixing frames 3 are commonly connected to the top fixing frame 6, and the bottom of the top fixing frame 6 is fixedly connected to the telescopic rod 7. The lower end of the telescopic rod 7 extends to the inner side of the storage container 8 and is fixedly connected to the impact block 9. When the telescopic rod 7 is started, the impact block 9 is driven to reciprocate through the telescopic rod 7 to squeeze and crush the fruits and vegetables inside the storage container 8.

[0034] The reciprocating drive structure 4 includes a limit plate 20 and an outer baffle plate 35. The limit plate 20 is fixedly connected to the outer wall of the storage container 8, and the outer baffle plate 35 is fixedly connected to the side fixing frame 3. A circular groove 21 is provided on the inner side of the limit plate 20. The circular groove 21 is composed of two arc-shaped limit grooves connected end to end. The center positions of the two arc-shaped grooves are the same. A gear 22 is provided between the limit plate 20 and the outer baffle plate 35. The gear 22 is rotatably connected to a U-shaped frame 23 through a shaft. The U-shaped frame 23 The U-shaped frame 23 is slidably connected to the outer baffle plate 35, and the bottom of the U-shaped frame 23 is fixedly connected to the elastic sleeve 25, and the lower end of the elastic sleeve 25 is movably connected to the slide plate 26. The outer wall of the limit plate 20 is provided with an inclined groove 27 slidably connected to the slide plate 26. The outer baffle plate 35 is equipped with a drive motor 24 for driving the gear 22 to rotate. When the drive motor 24 is started, the drive motor 24 drives the gear 22 to rotate, the partition plate 14 compresses the first spring 15, and the telescopic airbag 16 is in an expanded state. Figure 4As shown, the arc-shaped rack 13 is driven to rotate counterclockwise along the center of the arc-shaped rack 13, thereby driving the storage container 8 and the limit plate 20 connected thereto to move counterclockwise, the shaft of the gear 22 also reaches the left end along the arc-shaped limit groove at the top, the slide plate 26 also gradually moves to the left end of the inclined groove 27, and the slide plate 26 is also stretched under the limit of the inclined groove 27. The second spring 30 is in a pulled-up state. When the shaft of the gear 22 moves to the leftmost end of the top arc-shaped limit groove, the second spring 30 pulls the gear 22 to slide to the arc-shaped limit groove at the bottom. Inside the limiting groove, the gear 22 is not meshed with the arc-shaped rack 13. Under the push of the elastic force of the first spring 15, the arc-shaped rack 13 will be pushed to rotate clockwise along the center of the arc-shaped rack 13, and the gear 22 moves toward the right end of the circular groove 21. When the gear 22 moves to the rightmost end of the circular groove 21, the circular groove 21 will be pushed by the elastic force of the elastic sleeve 25, so that the shaft of the gear 22 slides from the bottom arc-shaped limiting groove to the top arc-shaped limiting groove, and the gear 22 re-meshes with the bottom of the arc-shaped rack 13, and so on and so forth to complete the reciprocating motion.

[0035] In the present embodiment, one end of the telescopic airbag 16 away from the partition 14 is fixedly connected with a joint 17, and the joint 17 is connected to the inside of the telescopic airbag 16. The outer wall of the joint 17 is fixedly connected with a one-way air intake valve 19 for one-way air intake into the joint 17. The outer wall of the joint 17 is fixedly connected with a regulating air valve 18. The exhaust volume of the regulating air valve 18 can be adjusted by reducing the exhaust aperture and adjusting the cross-sectional area of ​​the air flow channel. It can also be replaced by a shut-off valve or a butterfly valve. The regulating air valve 18 is connected to the inside of the joint 17, and the regulating air valve 18 is used to adjust the exhaust volume. The elastic sleeve 25 includes an outer sleeve 28, an inner sleeve 29 and a second spring 30. The inner wall of the outer sleeve 28 and the The outer wall of the inner sleeve 29 is slidably connected, and the inner wall of the inner sleeve 29 is fixedly connected with a second spring 30. The end of the second spring 30 away from the inner sleeve 29 is fixedly connected to the inner wall of the outer sleeve 28. After reducing the exhaust volume of the regulating air valve 18, when the first spring 15 compresses the telescopic air bag 16, the air inside the telescopic air bag 16 can only be released slowly along the regulating air valve 18, which is suitable for crushing the fruits and vegetables inside the storage container 8. After increasing the exhaust volume of the regulating air valve 18, when the first spring 15 compresses the telescopic air bag 16, the air inside the telescopic air bag 16 can be quickly released along the regulating air valve 18, which is suitable for quickly oscillating and mixing the sample inside the storage container 8.

[0036] In this embodiment, the upper end of the outer sleeve 28 is fixedly connected to the bottom of the U-shaped frame 23, and the lower end of the inner sleeve 29 is fixedly connected to a connecting block 31. The connecting block 31 is rotatably connected to the slide plate 26 to ensure that the slide plate 26 can slide in the inclined groove 27. The outer wall of the outer baffle 35 is provided with a vertically arranged slide groove 36, and the inner wall of the slide groove 36 is slidably connected with a slider 37. The inner wall of the slide groove 36 is fixedly connected with a plurality of vertically arranged limiting slide posts 38. The limiting slide posts 38 penetrate the slider 37 and are slidably connected to the slider 37. The driving motor 24 that drives the gear 22 to rotate is fixedly connected to the outer wall of one of the sliders 37. The limiting slide post 38 is used to limit the slider 37 so that the slider 37 can only slide along the slide groove 36. The U-shaped frame 23 is used to connect the gear 22 and the outer sleeve 28. When the U-shaped frame 23 moves up and down, the gear 22 also moves up and down with it.

[0037] In this embodiment, a slag discharge valve 33 and a liquid discharge valve 34 are fixedly installed on both sides of the bottom of the storage container 8, and a filter screen is installed inside the liquid discharge valve 34. After the storage container 8 is tilted, the filtered sample solution can be discharged from the liquid discharge valve 34, and the slag can also be discharged from the slag discharge valve 33.

[0038] In this embodiment, a plurality of rollers 11 are fixedly mounted on the bottom of the arc-shaped side plate 10. The arrangement of the rollers 11 can reduce friction.

[0039] Working principle: Prepare samples, put the fruits and vegetables to be tested into the storage container 8, then start the telescopic rod 7, and drive the impact block 9 to reciprocate through the telescopic rod 7 to squeeze and crush the fruits and vegetables inside the storage container 8. At this time, first adjust the exhaust volume of the regulating valve 18, and the method can be to reduce the exhaust aperture, and then start the driving motor 24, so that the driving motor 24 drives the gear 22 to rotate, the partition 14 compresses the first spring 15, and the telescopic airbag 16 is in an expanded state, such as Figure 4As shown, the arc-shaped rack 13 is driven to rotate counterclockwise along the center of the arc-shaped rack 13, thereby driving the storage container 8 and the limiting plate 20 connected thereto to move counterclockwise, the shaft of the gear 22 also reaches the left end along the arc-shaped limiting groove at the top, and the slide plate 26 gradually moves to the left end of the inclined groove 27. The slide plate 26 is also stretched under the limit of the inclined groove 27, and the second spring 30 is in a pulled-up state. When the shaft of the gear 22 moves to the leftmost end of the top arc-shaped limiting groove, the second spring 30 pulls the gear 22 to slide to the inside of the arc-shaped limiting groove at the bottom, and the gear 22 is not engaged with the arc-shaped rack 13. Under the push of the elastic force of the first spring 15, the arc-shaped rack 13 is pushed to rotate clockwise along the center of the arc-shaped rack 13, and the gear 22 moves toward the right end of the circular groove 21. In this process, since the exhaust volume of the regulating valve 18 is reduced and the exhaust is slow, the telescopic airbag 16 will slowly shrink, so that the arc-shaped rack 13 moves slowly under the push of the first spring 15, ensuring that the telescopic rod 7 drives the impact block 9 to squeeze and crush the fruits and vegetables more evenly. At this time, the elastic sleeve 25 is gradually compressed. When the gear 22 moves to the rightmost end of the circular groove 21, the circular groove 21 will be elastically compressed by the second spring 30 inside the elastic sleeve 25. Under the push of force, the shaft of the gear 22 slides from the arc-shaped limit groove at the bottom to the arc-shaped limit groove at the top, and the gear 22 re-engages with the bottom of the arc-shaped rack 13, and so on. Under the continuous telescopic movement of the telescopic rod 7, the impact block 9 evenly crushes the fruits and vegetables in the storage container 8. Compared with the crushing method of the crushing knife, the crushing is more uniform and sufficient without processing dead angles. After the initial crushing is completed, the mixing operation is performed, the exhaust volume of the regulating valve 18 is increased, the telescopic rod 7 is contracted, and then the gear 22 is driven to rotate by the driving motor 24, thereby driving the storage container 8 to move forward along the center of the arc-shaped rack 13. When the shaft of the gear 22 slides to the arc-shaped limit groove at the bottom of the circular groove 21, the larger exhaust diameter of the regulating valve 18 can quickly discharge the air inside the telescopic airbag 16. Pushed by the elastic force of the first spring 15, the storage container 8 moves quickly and stops at the right end of the circular groove 21. The sample inside the storage container 8 also oscillates inside the storage container 8 due to inertia, and the mixing operation is completed under the continuous movement of the storage container 8. Compared with rotary stirring, the present invention can better separate the pesticides inside vegetables, fruits and melons to the maximum extent, and the mixing is also more uniform and quick.

[0040] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for extracting food pesticide residues, comprising a base (1), the top of the base (1) being fixedly connected to two vertically arranged stands (2), characterized in that: The top of each of the vertical frames (2) is fixedly connected to a side fixing frame (3), a storage container (8) is arranged between the two side fixing frames (3), and the outer walls of both sides of the storage container (8) are fixedly connected to arc-shaped side plates (10) and arc-shaped racks (13) distributed up and down, and reciprocating drive structures (4) are arranged on both sides of the storage container (8), the outer wall of the reciprocating drive structure (4) is fixedly connected to the side fixing frame (3), and the reciprocating drive structure (4) is drivingly connected to the bottom of the arc-shaped rack (13), and elastic reset mechanisms (5) are arranged on both sides of the top of the storage container (8), and the interior of the elastic reset mechanism (5) is fixedly connected to an arc-shaped baffle (12), and the top surface of the arc-shaped baffle (12) is in contact with the top surface of the arc-shaped baffle (12). The bottom of the arc-shaped side plate (10) is movably connected, the middle part of the inner side of the arc-shaped baffle (12) is slidably connected to a partition (14), the two sides of the partition (14) are respectively fixedly connected to a first spring (15) and a telescopic airbag (16), the ends of the first spring (15) and the telescopic airbag (16) away from the partition (14) are fixedly connected to the inner wall of the elastic reset mechanism (5), the bottom of the partition (14) is fixedly connected to the middle part of the arc-shaped rack (13), the tops of the two side fixing frames (3) are commonly connected to a top fixing frame (6), the bottom of the top fixing frame (6) is fixedly connected to a telescopic rod (7), the lower end of the telescopic rod (7) extends to the inner side of the storage container (8) and is fixedly connected to an impact block (9); The reciprocating drive structure (4) comprises a limit plate (20) and an outer baffle plate (35), wherein the limit plate (20) is fixedly connected to the outer wall of the storage container (8), and the outer baffle plate (35) is fixedly connected to the side fixing frame (3). A circular groove (21) is provided on the inner side of the limit plate (20), wherein the circular groove (21) is composed of two arc-shaped limit grooves connected end to end, and the center positions of the two arc-shaped grooves are the same. A gear (22) is provided between the limit plate (20) and the outer baffle plate (35), and the The gear (22) is rotatably connected to a U-shaped frame (23) via a shaft, the U-shaped frame (23) is slidably connected to an outer baffle (35), an elastic sleeve (25) is fixedly connected to the bottom of the U-shaped frame (23), a slide plate (26) is movably connected to the lower end of the elastic sleeve (25), an outer wall of the limit plate (20) is provided with an inclined groove (27) slidably connected to the slide plate (26), and a driving motor (24) for driving the gear (22) to rotate is installed on the outer baffle (35); One end of the telescopic airbag (16) away from the partition (14) is fixedly connected to a joint (17), the joint (17) is connected to the interior of the telescopic airbag (16), the outer wall of the joint (17) is fixedly connected to a one-way air intake valve (19) for one-way air intake into the interior of the joint (17), the outer wall of the joint (17) is fixedly connected to a regulating air valve (18), the regulating air valve (18) is connected to the interior of the joint (17), and the regulating air valve (18) is used to adjust the exhaust volume, and the regulating air valve (18) is used to adjust the exhaust volume. After the exhaust volume of the regulating valve (18) is adjusted, when the first spring (15) compresses the telescopic airbag (16), the air inside the telescopic airbag (16) can only be released slowly along the regulating air valve (18), which is suitable for crushing the fruits and vegetables inside the storage container (8). After the exhaust volume of the regulating air valve (18) is increased, when the first spring (15) compresses the telescopic airbag (16), the air inside the telescopic airbag (16) can be released quickly along the regulating air valve (18), so that the sample inside the storage container (8) is quickly mixed.

2. The extraction device for detecting pesticide residues in food according to claim 1, characterized in that: The elastic sleeve (25) comprises an outer sleeve (28), an inner sleeve (29) and a second spring (30); the inner wall of the outer sleeve (28) is slidably connected to the outer wall of the inner sleeve (29); the inner wall of the inner sleeve (29) is fixedly connected to the end of the second spring 30; and one end of the second spring (30) away from the inner sleeve (29) is fixedly connected to the inner wall of the outer sleeve (28).

3. The extraction device for detecting pesticide residues in food according to claim 2, characterized in that: The upper end of the outer sleeve (28) is fixedly connected to the bottom of the U-shaped frame (23), and the lower end of the inner sleeve (29) is fixedly connected to a connecting block (31), and the connecting block (31) is rotatably connected to the slide plate (26).

4. The extraction device for detecting pesticide residues in food according to claim 1, characterized in that: The outer wall of the outer baffle plate (35) is provided with a vertically arranged slide groove (36), the inner wall of the slide groove (36) is slidably connected to a slider (37), the inner wall of the slide groove (36) is fixedly connected to a plurality of vertically arranged limit slide columns (38), the limit slide columns (38) penetrate the slider (37) and are slidably connected to the slider (37), and the driving motor (24) for driving the gear (22) to rotate is fixedly connected to the outer wall of one of the sliders (37).

5. The extraction device for detecting pesticide residues in food according to claim 1, characterized in that: The centers of the arc-shaped side plates (10), the arc-shaped baffles (12) and the arc-shaped rack (13) are all located on the same horizontal axis.

6. The extraction device for detecting pesticide residues in food according to claim 1, characterized in that: A slag discharge valve (33) and a liquid discharge valve (34) are respectively fixedly mounted on both sides of the bottom of the storage container (8), and a filter screen is mounted inside the liquid discharge valve (34).

7. The extraction device for detecting pesticide residues in food according to claim 1, characterized in that: A plurality of rollers (11) are fixedly mounted on the bottom of the arc-shaped side plate (10).

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