A food material pesticide residue rapid detection sample pretreatment device

Abstract

The application relates to the technical field of food material pesticide residue rapid detection, in particular to a food material pesticide residue rapid detection sample pretreatment device, which comprises a bottom plate, a smashing and mixing device is fixedly connected to the top of the bottom plate, a rotating column is fixedly connected to the output end of the smashing and mixing device, and a fixing frame is fixedly connected to the side, away from the smashing and mixing device, of the top of the bottom plate. The device is provided with rotating columns, rotating rods, cutting knives and the like, and the cutting knives can be symmetrically rotated around the rotating columns under the meshing of the gear ring and the gear, so that the rotating columns can drive the multiple cutting knives on the outer walls of the two rotating rods to rotate symmetrically around the rotating columns, the food materials are cut, the connecting frames on the outer walls of the rotating columns drive the cutting knives to longitudinally and arrayedly cut, the symmetrical stirring plates are matched to stir the food materials, the vegetable particles can be smashed to a more uniform state, the caking and residual problems can be avoided, the pesticide residue components in the food materials can be fully dissolved, and more representative samples can be provided for subsequent detection.

Description

Technical Field

[0001] This application relates to the technical field of rapid detection of pesticide residues in food ingredients, and in particular to a sample pretreatment device for rapid detection of pesticide residues in food ingredients. Background Technology

[0002] Rapid testing for pesticide residues in food refers to a technical means of qualitatively or semi-quantitatively detecting pesticide residues in various food products such as vegetables, fruits, grains, livestock and poultry products, and aquatic products in a short period of time (usually a few minutes to tens of minutes) using simple and rapid methods and equipment. Its core objective is to quickly screen for pesticide residues in food products to promptly identify potential food safety risks and provide a rapid basis for decision-making in food procurement, market supervision, and catering purchases.

[0003] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: the filtration process in existing devices largely relies on natural gravity filtration and lacks an active auxiliary filtration structure. When the sample contains a large amount of fibrous residue or viscous juice, it is very easy to clog the filter medium, resulting in slow filtration speed, extended pretreatment time, and difficulty in meeting the high-efficiency processing requirements of rapid pesticide residue testing. Utility Model Content

[0004] To avoid slow filtration speed and increased pretreatment time, this application provides a sample pretreatment device for rapid detection of pesticide residues in food ingredients.

[0005] This application provides a sample pretreatment device for rapid detection of pesticide residues in food ingredients, which adopts the following technical solution: it includes a base plate, a crushing and mixing device is fixedly connected to the top of the base plate, a rotating column is fixedly connected to the output end of the crushing and mixing device, and a fixing frame is fixedly connected to the top of the base plate away from the crushing and mixing device. A motor is fixedly connected to the inner wall of the fixed frame. An eccentric rotating block is fixedly connected to the left output end of the motor. A spring column is fixedly connected to the top of the base plate. A movable plate is slidably connected to the outer wall of the spring column. A mixing cylinder is fixedly installed on the inner wall of the movable plate. A support frame is fixedly connected to the bottom of the movable plate. A connecting plate is fixedly connected to the bottom of the support frame. A pulley is rotatably connected to the left side of the connecting plate via a pin.

[0006] Optionally, a toothed ring is fixedly connected to the bottom of the crushing and mixing device, a gear is meshed with the inner wall of the toothed ring, a rotating rod is fixedly connected to the bottom of the gear, and a cutting blade is fixedly connected to the outer wall of the rotating rod.

[0007] Optionally, a connecting frame is fixedly connected to the outer wall of the rotating column, a rotating hole is opened at the top of the connecting frame, the inner wall of the rotating hole is rotatably connected to the outer wall of the rotating rod, a cutting blade is fixedly connected to the outer wall of the rotating column, and a stirring plate is fixedly connected to the bottom of the connecting frame on one side of the rotating rod.

[0008] Optionally, the number of agitating plates is two, and the two agitating plates are symmetrically arranged around the rotating column. The number of cutting blades is several, and the several cutting blades are symmetrically arranged around the rotating column. The number of cutting blades is several, and the several cutting blades are arranged in a longitudinal array.

[0009] Optionally, a filter cylinder is fixedly installed at the bottom of the mixing cylinder, and a valve is provided between the filter cylinder and the mixing cylinder. After the crushing is completed, the valve can be opened to filter the crushed vegetables. A discharge port is fixedly connected to the bottom of the filter cylinder.

[0010] Optionally, the top of the eccentric rotating block contacts the bottom of the pulley, and there are two connecting plates, which are symmetrically arranged with the pulley as the center.

[0011] Optionally, the number of spring columns is several, and a slot is opened on the top of the base plate, which is adapted to the eccentric rotating block.

[0012] In summary, this application includes the following beneficial technical effects: 1. This utility model, by incorporating components such as a rotating column, rotating rods, and cutting blades, allows multiple cutting blades on the outer walls of the two rotating rods to rotate symmetrically around the rotating column when the gear ring and gear mesh. This cutting action is achieved by rotating the rotating column itself. Simultaneously, the connecting frame on the outer wall of the rotating column drives the cutting blades to be distributed longitudinally in a cutting pattern. Combined with symmetrically arranged stirring plates, the food is stirred, resulting in more uniformly pulverized vegetable particles, preventing clumping and ensuring that pesticide residues in the food are fully dissolved, providing more representative samples for subsequent testing.

[0013] 2. This utility model incorporates components such as a mixing drum, an eccentric rotating block, and pulleys. After the vegetables are pulverized in the mixing drum, the eccentric rotating block is driven by a motor to rotate. It contacts the pulleys at the bottom of the connecting plate, and with the elastic reset action of the spring column, it causes the moving plate, mixing drum, and filter drum to vibrate. The vibration reduces the accumulation of residue on the surface of the filter medium, accelerates the passage of sample juice through the filter drum, significantly shortens the filtration time, and meets the requirements of pretreatment efficiency for rapid pesticide residue testing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram of the connecting frame structure in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the movable plate in an embodiment of this application; Figure 4This is a schematic diagram of the eccentric rotating block in an embodiment of this application.

[0015] Reference numerals: 1. Base plate; 11. Crushing and mixing device; 111. Rotating column; 12. Fixed frame; 2. Gear ring; 21. Gear; 211. Rotating rod; 212. Cutting blade one; 22. Connecting frame; 221. Stirring plate; 23. Cutting blade two; 3. Spring column; 31. Moving plate; 311. Mixing cylinder; 32. Filter cylinder; 321. Discharge port; 33. Support frame; 331. Connecting plate; 34. Pulley; 35. Motor; 351. Eccentric rotating block. Detailed Implementation

[0016] The following is in conjunction with the appendix Figures 1-4 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0017] This application discloses a sample pretreatment device for rapid detection of pesticide residues in food ingredients. For example... Figure 1 , Figure 3 , Figure 4 As shown, it includes a base plate 1, and a crushing and mixing device 11 is fixedly connected to the top of the base plate 1. The crushing and mixing device 11 can be raised and lowered to facilitate subsequent operation by the staff. A rotating column 111 is fixedly connected to the output end of the crushing and mixing device 11, and a fixed frame 12 is fixedly connected to the top of the base plate 1 on the side away from the crushing and mixing device 11.

[0018] In this embodiment, a motor 35 is fixedly connected to the inner wall of the fixed frame 12, and an eccentric rotating block 351 is fixedly connected to the left output end of the motor 35. A spring column 3 is fixedly connected to the top of the base plate 1, and a moving plate 31 is slidably connected to the outer wall of the spring column 3. A mixing cylinder 311 is fixedly installed on the inner wall of the moving plate 31, and a support frame 33 is fixedly connected to the bottom of the moving plate 31. A connecting plate 331 is fixedly connected to the bottom of the support frame 33, and a pulley 34 is rotatably connected to the left side of the connecting plate 331 via a pin. The pulley 34 can reduce the friction between it and the eccentric rotating block 351 and improve the service life of the device.

[0019] Please see Figure 3 As shown, a filter cylinder 32 is fixedly installed at the bottom of the mixing cylinder 311. A polytetrafluoroethylene filter screen is installed inside the filter cylinder 32. A discharge port 321 is fixedly connected to the bottom of the filter cylinder 32. A container can be placed below the discharge port to collect vegetable juice.

[0020] Please see Figure 2As shown, a toothed ring 2 is fixedly connected to the bottom of the crushing and mixing device 11. A gear 21 is meshed with the inner wall of the toothed ring 2. A rotating rod 211 is fixedly connected to the bottom of the gear 21. A cutting blade 212 is fixedly connected to the outer wall of the rotating rod 211. The cutting blade 212 consists of four double-edged blades. The number of cutting blades 212 is several, which improves the crushing effect on vegetables.

[0021] Please see Figure 3 As shown, the top of the eccentric rotating block 351 is in contact with the bottom of the pulley 34, and there are two connecting plates 331, which are symmetrically arranged with the pulley 34 as the center.

[0022] Please see Figure 2 As shown, a connecting frame 22 is fixedly connected to the outer wall of the rotating column 111. The top of the connecting frame 22 has a rotating hole, and the inner wall of the rotating hole is rotatably connected to the outer wall of the rotating rod 211. A second cutting blade 23 is fixedly connected to the outer wall of the rotating column 111. The second cutting blade 23 consists of five double-edged blades and works with the two rotating rods 211 to crush vegetables. A stirring plate 221 is fixedly connected to one side of the bottom of the connecting frame 22, which is adjacent to the rotating rod 211. There are two gears 21 on the rotating rod 211, which are symmetrically arranged. Several second cutting blades 23 are also symmetrically arranged. The first cutting blade 212 and the second cutting blade 23 are staggered to improve the crushing effect of the device.

[0023] Please see Figure 4 As shown, there are several spring pillars 3. The top of the base plate 1 has a slot that matches the eccentric rotating block 351. The slot allows the eccentric rotating block 351 to rotate smoothly.

[0024] Please see Figure 2 As shown, there are two stirring plates 221. The arrangement of the two stirring plates 221 can stir the vegetables crushed on the inner wall of the mixing drum 311. The two stirring plates 221 are symmetrically arranged with the rotating column 111 as the center. There are several cutting blades 212. The several cutting blades 212 are symmetrically arranged with the rotating column 111 as the center. There are several cutting blades 23. The several cutting blades 23 are arranged in a longitudinal array.

[0025] The implementation principle of the food pesticide residue rapid testing sample pretreatment device in this application embodiment is as follows: The vegetable sample to be processed is placed into the crushing and mixing device 11. After the crushing and mixing device 11 is started, the rotating column 111 drives the connecting frame 22 and the second cutting blade 23 to rotate. At the same time, the gear ring 2 meshes with two gears 21, driving the two rotating rods 211 and several first cutting blades 212 to rotate. This allows the first cutting blades 212 to rotate on their own while being driven to rotate, thus crushing the vegetable samples. The staggered arrangement of the first cutting blades 212 and second cutting blades 23 enhances the crushing effect on the vegetable samples. The two stirring plates 221 further agitate the crushed material. Stirring ensures uniform mixing. After crushing and stirring, open the valve between the filter cylinder 32 and the mixing cylinder 311 to allow the material to enter the filter cylinder 32. At this time, the motor 35 on the fixed frame 12 starts, driving the eccentric rotating block 351 to rotate. The eccentric rotating block 351 contacts the pulley 34 at the bottom of the connecting plate 331, causing the moving plate 31 to slide up and down along the spring column 3 and generate vibration. The vibration is transmitted to the mixing cylinder 311 and the filter cylinder 32 at the bottom, causing the juice in the material to quickly pass through the filter cylinder 32 and be discharged through the discharge port 321, completing the filtration of the sample. Through the synergistic work of crushing and stirring and vibration filtration, efficient pretreatment of vegetable samples is achieved.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sample pretreatment device for rapid detection of pesticide residues in food ingredients, comprising a base plate (1), characterized in that: The bottom plate (1) is fixedly connected to the top of the crushing and mixing device (11), and the output end of the crushing and mixing device (11) is fixedly connected to the rotating column (111). The top of the bottom plate (1) is fixedly connected to the side away from the crushing and mixing device (11) by the fixing frame (12). A motor (35) is fixedly connected to the inner wall of the fixed frame (12). An eccentric rotating block (351) is fixedly connected to the left output end of the motor (35). A spring column (3) is fixedly connected to the top of the base plate (1). A moving plate (31) is slidably connected to the outer wall of the spring column (3). A mixing cylinder (311) is fixedly installed on the inner wall of the moving plate (31). A support frame (33) is fixedly connected to the bottom of the moving plate (31). A connecting plate (331) is fixedly connected to the bottom of the support frame (33). A pulley (34) is rotatably connected to the left side of the connecting plate (331) via a pin.

2. The food ingredient pesticide residue rapid detection sample pretreatment device according to claim 1, characterized in that: The bottom of the crushing and mixing device (11) is fixedly connected to a toothed ring (2), and a gear (21) is meshed with the inner wall of the toothed ring (2). A rotating rod (211) is fixedly connected to the bottom of the gear (21), and a cutting blade (212) is fixedly connected to the outer wall of the rotating rod (211).

3. The food ingredient pesticide residue rapid detection sample pretreatment device according to claim 2, characterized in that: A connecting frame (22) is fixedly connected to the outer wall of the rotating column (111). A rotating hole is opened at the top of the connecting frame (22). The inner wall of the rotating hole is rotatably connected to the outer wall of the rotating rod (211). A cutting blade (23) is fixedly connected to the outer wall of the rotating column (111). A stirring plate (221) is fixedly connected to one side of the bottom of the connecting frame (22) on the rotating rod (211).

4. The food ingredient pesticide residue rapid detection sample pretreatment device according to claim 3, characterized in that: There are two stirring plates (221), which are symmetrically arranged around the rotating column (111). There are several cutting blades (212), which are symmetrically arranged around the rotating column (111). There are several cutting blades (23), which are arranged in a longitudinal array.

5. The food ingredient pesticide residue rapid detection sample pretreatment device according to claim 1, characterized in that: A filter cylinder (32) is fixedly installed at the bottom of the mixing cylinder (311), and a discharge port (321) is fixedly connected to the bottom of the filter cylinder (32).

6. The food ingredient pesticide residue rapid detection sample pretreatment device according to claim 5, characterized in that: The top of the eccentric rotating block (351) is in contact with the bottom of the pulley (34), and there are two connecting plates (331), which are symmetrically arranged with the pulley (34) as the center.

7. The food ingredient pesticide residue rapid detection sample pretreatment device according to claim 6, characterized in that: The number of spring columns (3) is several, and the top of the base plate (1) is provided with a slot, which is adapted to the eccentric rotating block (351).

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