Pretreatment device for food pesticide residue detection

Abstract

The utility model discloses a pretreatment device for food pesticide residue detection, and relates to the technical field of pesticide residue detection and treatment. The locking assembly is arranged between the sampling cup and the placing rack; a supporting frame is arranged on the right side of the base. The uniform mixing assembly is arranged between the placing frame and the base; the vertical end of the connecting frame is arranged in the supporting frame in a penetrating mode, and a supporting ring is fixedly arranged at the left end of the connecting frame. A protruding ring is fixedly arranged at the upper end of the frame body and arranged on the upper side of the supporting ring in a contact mode. The driving motor is fixedly arranged on the right side of the supporting frame through a motor support, and an output shaft of the driving motor penetrates through the right side wall of the supporting frame and then is arranged in the supporting frame. The lead screw is arranged in the supporting frame, and the vertical end of the connecting frame is arranged on the lead screw in a screwed and sleeved mode through threads. According to the device, the placing rack and the rack body are separately arranged, so that the sampling container is convenient to take, and a reagent and a cut sample are fully fused by rotating the sampling container, so that the operation intensity is reduced, and the operation efficiency is also improved.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection and processing technology, specifically to a pretreatment device for pesticide residue detection in food. Background Technology

[0002] Plant-derived foods refer to foods that provide energy or material sources to humans directly or after processing, using plant seeds, fruits, or tissues as raw materials. Before food preparation, pesticide residue testing of raw materials is required. This involves soaking the raw materials in a solvent and extracting the solvent to detect pesticide content. A sample grinder for pretreatment in food pesticide and veterinary drug residue testing, disclosed in patent publication number CN221302919U, features a fixed rod with several crushing blades on one side and a scraper on the other. In this patent, the fixed rod rotates, causing the crushing blades to grind the sample, and the scraper cleans the residue adhering to the inner wall. The ground sample flows downwards through the filter holes. While this achieves the purpose of shredding, the shredded sample still needs to be collected and placed in a centrifuge tube for further mixing, increasing the workload. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a pretreatment device for food pesticide residue detection that is simple in structure, reasonably designed, and easy to use. By separating the placement rack from the frame body, it is not only convenient to pick up the sampling container, but also to ensure that the reagent and the chopped sample are fully mixed by rotating the sampling container. This not only reduces the intensity of operation but also improves the efficiency of operation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a frame, a grinding motor, and a placement rack. The grinding motor is provided on the upper side of the frame, and a crushing blade is provided on the bottom output end of the grinding motor. The placement rack is provided on the lower side of the frame, and the sampling cup is placed inside the placement rack.

[0005] It also includes:

[0006] A locking assembly is disposed between the sampling cup and the placement rack;

[0007] The base is located on the lower side of the placement frame, and a support frame is provided on the right side of the base;

[0008] A mixing component, wherein the mixing component is disposed between the placement frame and the base;

[0009] The connecting frame is an inverted "L" shaped structure. The vertical end of the connecting frame passes through the support frame, and a support ring is fixedly installed on the left end of the connecting frame. A protruding ring is fixedly installed on the upper end of the frame, and the protruding ring contacts the upper side of the support ring.

[0010] The drive motor is fixedly mounted on the right side of the support frame via a motor bracket, and the output shaft of the drive motor passes through the right side wall of the support frame and is located inside the support frame.

[0011] The lead screw is located inside the support frame, and the vertical end of the connecting frame is threaded onto the lead screw. A support shaft is fixedly installed at the bottom end of the lead screw, and the bottom end of the support shaft is screwed onto the base through a bearing. The support shaft is connected to the output shaft of the drive motor through a bevel gear pair.

[0012] The above technical solution involves placing a sampling cup containing reagents into a rack and locking it in place using a locking assembly. The drive motor is then activated, causing the rack to move downwards and position itself above the sampling cup. Shredded sample is discharged from the rack into the sampling cup, and the mixing assembly rotates the cup to ensure thorough mixing of the reagents and sample. After mixing, the drive motor is activated in the opposite direction, moving the rack away from the sampling cup and simultaneously removing the locking assembly, thus completing the process of immersing the raw material in the solvent.

[0013] As a further improvement of this utility model, the locking component includes:

[0014] Four fixing screws are arranged in a circumferentially angularly distributed manner and fixed to the inner ring wall of the placement frame.

[0015] The number of movable solenoids is the same as that of the fixed screw rods, and each is screwed onto the fixed screw rod by a threaded connection;

[0016] The number of positioning stages is the same as that of the movable screw tube, and they are fixedly installed at the inner end of the movable screw tube, with the positioning stages inserted into the outer ring wall of the sampling cup.

[0017] By manually rotating the movable screw tube, the positioning stage can be moved by rotating and moving it on the fixed screw until the positioning stage is inserted into the sampling cup, thus fixing the sampling cup in the placement rack.

[0018] As a further improvement of this utility model, a circular groove is provided on the upper side of the placement rack, and the sampling cup is placed in the circular groove.

[0019] The sampling cup is positioned using the above technical solution design.

[0020] As a further improvement of this utility model, a ring is fixedly provided at the bottom of the frame, and the ring is located on the outside of the sampling cup;

[0021] The above technical solution is designed to shield the sampling cup and prevent spillage during the mixing process.

[0022] As a further improvement of this utility model, the mixing component includes:

[0023] A support platform is fixedly installed on the upper middle part of the base, and a central column is screwed onto the support platform via a bearing. The upper end of the central column is connected to the bottom of the placement frame.

[0024] A rotating ring is fixedly installed at the bottom of the placement frame and located on the outside of the central column; and an internal toothed ring is provided on the inner ring wall of the rotating ring.

[0025] A rotary motor is disposed between the central column and the rotating ring, and the rotary motor is fixedly mounted on the upper side of the support platform by a motor bracket.

[0026] The transmission gear is sleeved and fixed on the output shaft of the rotary motor, and the transmission gear meshes with the inner gear ring of the rotating ring.

[0027] The above technical solution design drives the placement rack to rotate, causing the sampling cup to rotate.

[0028] As a further improvement of this utility model, several locking platforms are fixedly arranged at equal angles on the bottom circumference of the convex ring, and the locking platforms are locked in the support ring.

[0029] The above technical solution is used to position the frame.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] 1. The original fixed connection between the placement rack and the frame body has been changed to a non-connected structure. The placement rack is supported by a support ring and set on the upper side of the frame body. The connection rack moves the frame body through the drive of the screw, changing the distance between the frame body and the placement rack, which facilitates the placement and retrieval of the sampling cup.

[0032] 2. When the sampling cup is placed in the rack, in addition to the circular groove inside the rack for guidance, the positioning stage can be moved and inserted into the sampling cup by manually rotating the moving screw tube, so that the sampling cup is in a fixed state.

[0033] 3. The reagents and samples are thoroughly mixed by rotating the placement rack. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this utility model.

[0035] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0036] Figure 3 This is a structural schematic diagram of the locking component in this utility model.

[0037] Figure 4 This is a schematic diagram of the mixing component in this utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] Frame 1, Grinding motor 2, Placement rack 3, Circular groove 3-1, Sampling cup 4, Locking assembly 5, Fixing screw 5-1, Moving screw tube 5-2, Positioning platform 5-3, Base 6, Support frame 6-1, Mixing assembly 7, Support platform 7-1, Central column 7-2, Rotating ring 7-3, Rotary motor 7-4, Transmission gear 7-5, Connecting frame 8, Support ring 9, Convex ring 10, Drive motor 11, Lead screw 12, Circular ring 13, Clamping platform 14. Detailed Implementation

[0040] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] Example 1:

[0042] Please see Figures 1-4 This embodiment includes a frame 1, a grinding motor 2, and a placement rack 3. The grinding motor 2 is installed on the upper side of the frame 1, and a crushing blade is installed on the bottom output end of the grinding motor 2. The placement rack 3 is installed on the lower side of the frame 1. A circular groove 3-1 is opened on the upper side of the placement rack 3, and a sampling cup 4 is placed in the circular groove 3-1. A circular ring 13 is fixedly installed at the bottom of the frame 1, and the circular ring 13 is located on the outside of the sampling cup 4.

[0043] Also includes:

[0044] Locking component 5, wherein the locking component 5 is disposed between the sampling cup 4 and the placement rack 3;

[0045] The base 6 is located on the lower side of the placement frame 3, and a support frame 6-1 is provided on the right side of the base 6;

[0046] The mixing component 7 is disposed between the placement frame 3 and the base 6;

[0047] The connecting frame 8 is an inverted "L" shaped structure. The vertical end of the connecting frame 8 passes through the support frame 6-1. A support ring 9 is fixedly installed on the left end of the connecting frame 8. A protruding ring 10 is fixedly installed on the upper end of the frame 1, and the protruding ring 10 contacts the upper side of the support ring 9. Several locking platforms 14 are fixedly installed at equal angles on the bottom circumference of the protruding ring 10, and the locking platforms 14 are locked in the support ring 9.

[0048] The drive motor 11 is fixedly mounted on the right side of the support frame 6-1 by a motor bracket. The specific model of the drive motor 11 is purchased directly from the market and installed according to the actual usage requirements. The output shaft of the drive motor 11 passes through the right side wall of the support frame 6-1 and is located inside the support frame 6-1.

[0049] The lead screw 12 is disposed inside the support frame 6-1, and the vertical end of the connecting frame 8 is threadedly sleeved on the lead screw 12; a support shaft is fixedly disposed at the bottom end of the lead screw 12, and the bottom end of the support shaft is screwed onto the base 6 through a bearing, and the support shaft is connected to the output shaft of the drive motor 11 through a bevel gear pair transmission.

[0050] Through the above technical solution design, the sampling cup 4 containing reagents is placed in the placement rack 3 and locked and fixed by the locking component 5; the drive motor 11 is started, driving the rack 1 to move downwards and set on the upper side of the sampling cup 4; the shredded sample is discharged from the rack 1 downwards into the sampling cup 4, and the mixing component 7 drives the sampling cup 4 to rotate, so that the reagent and sample are fully mixed; after mixing, the drive motor 11 is started to rotate in the opposite direction, so that the rack 1 is moved away from the sampling cup 4, and the locking component 5 is moved away from the sampling cup 4, thus completing the process of immersing the raw material in the solvent.

[0051] Example 2:

[0052] Please see Figures 1-4 Based on Embodiment 1, the locking component 5 is further improved and includes:

[0053] Four fixing screws 5-1 are arranged in a circumferentially angularly distributed manner and fixed to the inner ring wall of the placement frame 3.

[0054] The number of movable solenoids 5-2 is the same as that of fixed screws 5-1, and they are respectively threaded onto fixed screws 5-1;

[0055] Positioning stage 5-3, the number of which is the same as that of the movable solenoid 5-2, is fixedly installed at the inner end of the movable solenoid 5-2, and the positioning stage 5-3 is inserted into the outer ring wall of the sampling cup 4.

[0056] By manually rotating the movable screw tube 5-2, it can rotate and move on the fixed screw 5-1, thereby moving the positioning stage 5-3 until the positioning stage 5-3 is inserted into the sampling cup 4, thus fixing the sampling cup 4 in the placement frame 3.

[0057] Example 3:

[0058] Please see Figures 1-4 Based on Example 1, the mixing component 7 is further improved and includes:

[0059] The support platform 7-1 is fixedly installed on the upper middle part of the base 6, and a central column 7-2 is screwed onto the support platform 7-1 through a bearing. The upper end of the central column 7-2 is connected to the bottom of the placement frame 3.

[0060] The rotating ring 7-3 is fixedly installed at the bottom of the placement frame 3 and is located outside the central column 7-2; and an internal toothed ring is provided on the inner ring wall of the rotating ring 7-3.

[0061] The rotary motor 7-4 is located between the central column 7-2 and the rotating ring 7-3, and is fixedly mounted on the upper side of the support platform 7-1 by a motor bracket; the specific model of the rotary motor 7-4 is purchased and installed directly from the market according to actual usage requirements.

[0062] The transmission gear 7-5 is sleeved and fixed on the output shaft of the rotary motor 7-4, and the transmission gear 7-5 is meshed with the internal gear ring of the rotating ring 7-3.

[0063] Through the above technical solution design, the placement rack 3 is driven to rotate, causing the sampling cup 4 to rotate.

[0064] When using this invention, the sampling cup 4 containing the reagent is placed in the placement frame 3, and the surrounding movable screw tube 5-2 is manually rotated to move the positioning stage 5-3 into the sampling cup 4 to lock and fix the sampling cup 4. The frame 1 is supported in the support ring 9 by the convex ring 10. The drive motor 11 is started to move the frame 1 downward and set it on the upper side of the sampling cup 4. The grinding motor 2 is started to cut the sample into pieces, and the cut sample is discharged from the frame 1 into the sampling cup 4. The rotary motor 7-4 is started to rotate the transmission gear 7-5 to drive the rotating ring 7-3 to rotate, so that the placement stage drives the sampling cup 4 to rotate, so that the reagent and sample are fully mixed. After mixing, the drive motor 11 is started to rotate in the opposite direction, so that the frame 1 is away from the sampling cup 4. At the same time, the movable screw tube 5-2 is manually rotated in the opposite direction to make the positioning stage 5-3 disengage from the sampling cup 4, thus completing the process of soaking the raw material in the solvent.

[0065] Compared with the prior art, the beneficial effects of this utility model are:

[0066] 1. The original fixed connection between the placement rack 3 and the frame 1 is changed to a non-connected structure. The placement rack 3 is supported by the support ring 9 and is set on the upper side of the frame 1. The connecting rack 8 drives the frame 1 to move through the screw 12, changing the distance between the frame 1 and the placement rack 3, which facilitates the placement and retrieval of the sampling cup 4.

[0067] 2. When the sampling cup 4 is placed in the placement rack 3, in addition to the circular groove 3-1 set in the placement rack 3 for guidance, the positioning stage 5-3 can be moved and inserted into the sampling cup 4 by manually rotating the moving screw tube 5-2, so that the sampling cup 4 can be in a fixed state.

[0068] 3. By rotating the placement rack 3, the reagents and samples are thoroughly mixed.

[0069] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A food agricultural residue detection pretreatment device, comprising a frame body (1), a grinding motor (2) and a placing rack (3), wherein the upper side of the frame body (1) is provided with the grinding motor (2), the bottom output end of the grinding motor (2) is provided with a crushing knife, the lower side of the frame body (1) is provided with the placing rack (3), and a sampling cup (4) is arranged in the placing rack (3). characterized in that It also comprises: a locking assembly (5) arranged between the sampling cup (4) and the placing rack (3); a base (6) arranged on the lower side of the placing rack (3), and a support frame (6-1) arranged on the right side of the base (6); a mixing assembly (7) arranged between the placing rack (3) and the base (6); a connecting frame (8) in an inverted "L" shape, wherein the vertical end of the connecting frame (8) is arranged in the support frame (6-1), and a support ring (9) is fixedly arranged on the left end of the connecting frame (8); a convex ring (10) is fixedly arranged on the upper end of the frame body (1), and the convex ring (10) is arranged on the upper side of the support ring (9); a drive motor (11) fixedly arranged on the right side of the support frame (6-1) through a motor support, and the output shaft of the drive motor (11) is arranged in the support frame (6-1) after penetrating through the right side wall of the support frame (6-1); a lead screw (12) arranged in the support frame (6-1), and the vertical end of the connecting frame (8) is threadedly connected to the lead screw (12); the bottom end of the lead screw (12) is fixedly provided with a support shaft, the bottom end of the support shaft is rotatably connected to the base (6) through a bearing, and the support shaft and the output shaft of the drive motor (11) are connected through a bevel gear pair. 2.The foodstuff pesticide residue detection pretreatment device according to claim 1, characterized in that: The locking assembly (5) comprises: four fixed screws (5-1) arranged on the inner ring wall of the placing rack (3) at equal angles; a plurality of moving screw pipes (5-2) arranged on the fixed screws (5-1) through thread connection; a plurality of positioning tables (5-3) arranged on the inner ends of the moving screw pipes (5-2) through thread connection, and the positioning tables (5-3) are inserted into the outer ring wall of the sampling cup (4). 3.The foodstuff pesticide residue detection pretreatment device according to claim 1, characterized in that: The upper side of the placing rack (3) is provided with a circular groove (3-1), and the sampling cup (4) is arranged in the circular groove (3-1).

4. The pretreatment device for foodstuff pesticide residue detection according to claim 1, characterized in that: The bottom of the frame body (1) is fixedly provided with a circular ring (13), and the circular ring (13) is arranged on the outer side of the sampling cup (4).

5. The pretreatment device for foodstuff pesticide residue detection according to claim 1, characterized in that: The mixing assembly (7) comprises: a support table (7-1) fixedly arranged on the upper side of the base (6), and a center column (7-2) rotatably connected to the support table (7-1) through a bearing; A rotating ring (7-3) is fixedly arranged at the bottom of the rack (3) and outside the center column (7-2), and an inner ring wall of the rotating ring (7-3) is provided with an inner gear ring; A rotating motor (7-4) is arranged between the center column (7-2) and the rotating ring (7-3), and the rotating motor (7-4) is fixedly arranged on the upper side of the support table (7-1) through a motor support; A transmission gear (7-5) is sleeved and fixed on an output shaft of the rotating motor (7-4), and the transmission gear (7-5) is arranged in meshing with the inner gear ring of the rotating ring (7-3). 6.The foodstuff pesticide residue detection pretreatment device according to claim 1, characterized in that: A plurality of clamping tables (14) are fixedly arranged at the bottom of the convex ring (10) in equal angular distribution, and the clamping tables (14) are clamped in the support ring (9).

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