Sample preparation device for solid food detection

By designing a solid food testing device that includes a motor-driven hammer, the problems of low efficiency and cross-contamination in the sample preparation process were solved, achieving efficient crushing and cleaning, and ensuring the accuracy of the test results.

CN224216394UActive Publication Date: 2026-05-08SHANDONG AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG AGRICULTURAL UNIVERSITY
Filing Date
2025-05-26
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing solid food testing devices suffer from low efficiency, long processing time, and easy cross-contamination between batches during sample preparation. In particular, the internal parts of the equipment are difficult to clean, affecting the accuracy of the test results.

Method used

A sample preparation device was designed, comprising a base plate, a back plate, a motor, a hammer, and a detachable straight cylinder. The motor drives the hammer to crush solid food, and the detachable tray and sampling cup enable uniform crushing and cleaning of the food, avoiding contamination.

Benefits of technology

It achieves efficient crushing and cleaning of solid food, ensures the accuracy of test results, avoids cross-contamination between equipment, and simplifies the cleaning process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a sample preparation device for solid food detection, which comprises a bottom plate, a back plate is fixedly connected onto the bottom plate, a first partition plate is fixedly connected onto the back plate, and a motor is fixedly connected onto the first partition plate; the crushing assembly comprises a straight cylinder and a driving hammer, the motor and the driving hammer are in transmission connection through a transmission mechanism, two second partition plates are fixedly connected to the back plate and located on the two sides of the straight cylinder, electric telescopic rods are fixedly connected to the second partition plates, and the electric telescopic rods and the straight cylinder are detachably connected through a first connecting mechanism; the straight cylinder and the driving hammer are correspondingly arranged up and down, the straight cylinder is detachably connected with a supporting plate, the supporting plate is arranged on the straight cylinder in a sliding mode, and a material leaking hole is formed in the supporting plate; a cup supporting frame is arranged on the bottom plate in a sliding mode, a plurality of sampling cups are placed on the cup supporting frame, and the sampling cups are located below the straight cylinder. The solid food crushing device can crush solid food, the crushing particle size of the solid food can be selected, cleaning liquid is very convenient after the solid food crushing device is used, and the influence on next food sample preparation is avoided.
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Description

Technical Field

[0001] This utility model relates to the field of food sample preparation device technology, and in particular to a sample preparation device for testing solid food. Background Technology

[0002] With the continuous improvement of the food safety supervision system, solid food testing has become an important part of protecting public health. At present, food testing technology has moved from traditional chemical analysis to high throughput and high sensitivity. However, the advancement of testing technology has placed higher demands on sample preparation, especially the sample preparation process of solid food, which needs to take into account homogeneity, no pollution and high efficiency, otherwise it may affect the accuracy of the final test results.

[0003] In the field of solid food sample preparation, traditional methods require preliminary crushing of samples through cutting with knives or manual mashing, but these operations are inefficient and time-consuming. Although some equipment uses mechanical crushing, such as stirring blades or spiral lifting structures, problems still exist, such as the difficulty in removing residues inside the equipment, especially since microorganisms can easily grow in components such as stirring paddles and pipes, leading to batch-to-batch cross-contamination. Although some devices have introduced steam sterilization or spray cleaning functions, their structures are complex and energy consumption is high.

[0004] To address this issue, a sample preparation device for solid food testing is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a sample preparation device for testing solid food, so as to solve the problems existing in the prior art. Furthermore, it facilitates the cleaning of the device after crushing solid food, thus avoiding contamination or impact on subsequent food production.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a sample preparation device for solid food testing, comprising:

[0007] A base plate, on which a back plate is fixedly connected, a first partition plate is fixedly connected, and a motor is fixedly connected to the first partition plate;

[0008] A crushing assembly includes a straight cylinder and a hammer. The motor and the hammer are connected by a transmission mechanism. Two second partitions are fixedly connected to the back plate and are located on both sides of the straight cylinder. An electric telescopic rod is fixedly connected to the second partitions. The electric telescopic rod and the straight cylinder are detachably connected by a first connecting mechanism. The straight cylinder and the hammer are arranged vertically and vertically respectively. A support plate is detachably connected to the straight cylinder and is slidably disposed on the straight cylinder. A material leakage hole is provided on the support plate.

[0009] A cup holder is slidably mounted on the base plate, and several sampling cups are placed on the cup holder, with the sampling cups located below the straight cylinder.

[0010] Preferably, the first connecting mechanism includes a bending plate, one end of which is fixedly connected to the output end of the electric telescopic rod, and a plurality of first fixing plates are fixedly connected to the straight cylinder, and the end of the bending plate away from the electric telescopic rod is detachably connected to the first fixing plate.

[0011] Preferably, the bending plate includes a first connecting plate, a second connecting plate, and a third connecting plate. The second connecting plate is fixedly connected between the first connecting plate and the third connecting plate. A plurality of studs are fixedly connected to the first connecting plate. The first connecting plate is fixedly connected to the output end of the electric telescopic rod. A first through hole is provided on the third connecting plate. The studs pass through the first through hole and are threaded with nuts.

[0012] Preferably, two second fixing plates are fixedly connected to the straight cylinder, and a first guide tube is fixedly connected to the second fixing plate. The two first guide tubes are arranged opposite to each other, and a support plate passes through the first guide tube.

[0013] Preferably, the transmission mechanism includes a rotating plate, which is fixedly connected to the output shaft of the motor. A fourth connecting plate is fixedly connected to the back plate, and a second guide tube is fixedly connected to the fourth connecting plate. A fixed shaft is fixedly connected to the rotating plate, and a first connecting rod is rotatably connected to the fixed shaft. A second connecting rod is rotatably connected to the end of the first connecting rod away from the fixed shaft. The second connecting rod passes through the second guide tube and is detachably connected to the hammer.

[0014] Preferably, a third partition is fixedly connected to the back plate, the third partition has a third through hole, and a funnel is fixedly connected inside the third through hole, the funnel being located below the straight cylinder.

[0015] Preferably, a sliding groove is fixedly connected to the base plate, and the cup holder is slidably connected in the sliding groove, which is located below the funnel.

[0016] This utility model discloses the following technical effects: In this device, the base plate and back plate provide support. The motor drives the hammer to reciprocate up and down. During operation, the hammer enters the straight cylinder and reciprocates, hammering the solid food and thus breaking it down. The first partition is used to install the motor, and the second partition is used to install the electric telescopic rod. The electric telescopic rod drives the straight cylinder to move up and down through the first connecting mechanism. The support plate seals the bottom of the straight cylinder. When food needs to be broken down, the support plate is installed at the bottom of the straight cylinder. The discharge hole is used for discharging food. After breaking down the food, the support plate can be moved to move the discharge hole into the straight cylinder, allowing the food to fall out. The cup holder holds the sampling cup, which catches the food falling from the discharge hole. This utility model can break down solid food and allows selection of the particle size of the solid food to be broken down. Cleaning the liquid after use is very convenient and avoids affecting the next food sample preparation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the sample preparation device for solid food testing according to this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point a in the middle;

[0020] The components are as follows: 1. Base plate; 2. Back plate; 3. First partition; 4. Motor; 5. Straight cylinder; 6. Hammer; 7. Second partition; 8. Electric telescopic rod; 9. Support plate; 10. Discharge hole; 11. Cup holder; 12. Sampling cup; 13. Bending plate; 14. First fixing plate; 15. First connecting plate; 16. Second connecting plate; 17. Third connecting plate; 18. Stud; 19. Nut; 20. Second fixing plate; 21. First guide tube; 22. Rotating plate; 23. Fourth connecting plate; 24. Second guide tube; 25. Fixed shaft; 26. First connecting rod; 27. Second connecting rod; 28. Third partition; 29. ​​Funnel; 30. Slide groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Reference Figure 1-2 This utility model provides a sample preparation device for testing solid food, comprising:

[0024] A base plate 1, a back plate 2 fixedly connected to the base plate 1, a first partition 3 fixedly connected to the back plate 2, and a motor 4 fixedly connected to the first partition 3;

[0025] The crushing assembly includes a straight cylinder 5 and a hammer 6. The motor 4 is connected to the hammer 6 through a transmission mechanism. Two second partitions 7 are fixedly connected to the back plate 2. The two second partitions 7 are located on both sides of the straight cylinder 5. An electric telescopic rod 8 is fixedly connected to the second partitions 7. The electric telescopic rod 8 and the straight cylinder 5 are detachably connected through a first connecting mechanism. The straight cylinder 5 and the hammer 6 are arranged vertically and vertically respectively. A support plate 9 is detachably connected to the straight cylinder 5. The support plate 9 is slidably arranged on the straight cylinder 5. A material leakage hole 10 is opened on the support plate 9.

[0026] A cup holder 11 is slidably mounted on the base plate 1, and several sampling cups 12 are placed on the cup holder 11. The sampling cups 12 are located below the straight cylinder 5.

[0027] In this device, the base plate 1 and back plate 2 provide support. The motor 4 drives the hammer 6 to reciprocate up and down. During operation, the hammer 6 enters the straight cylinder 5 and reciprocates to hammer the solid food, thereby breaking it down. The first partition 3 is used to install the motor 4, and the second partition 7 is used to install the electric telescopic rod 8. The electric telescopic rod 8 drives the straight cylinder 5 to move up and down through the first connecting mechanism. The support plate 9 is used to seal the bottom of the straight cylinder 5. When food needs to be broken down, the support plate 9 is installed at the bottom of the straight cylinder 5. The discharge hole 10 is used to discharge food. After the breaking is completed, the support plate 9 can be moved so that the discharge hole 10 moves into the straight cylinder 5, allowing the food to fall out. The cup holder 11 is used to hold the sampling cup 12, which catches the food falling from the discharge hole 10.

[0028] When crushing food, the pallet 9 is installed at the bottom of the cylinder 5, and then the food is placed inside the cylinder 5. The electric telescopic rod 8 is activated, which drives the cylinder 5 upward through the first connecting mechanism, thereby allowing the hammer 6 to enter the cylinder 5. Since the movement trajectory of the hammer 6 is fixed, the distance between the hammer 6 and the pallet 9 during movement can be adjusted by adjusting the height of the cylinder 5, thus controlling the size of the crushed food particles. After the food is crushed, the electric telescopic rod 8 is retracted, causing the cylinder 5 to move downward. Then, the pallet 9 is moved, moving the discharge hole 10 into the cylinder 5, allowing the food to fall into the sampling cup 12 below. When replacing the sampling cup 12, the pallet 9 is moved first to remove the discharge hole 10, and then the cup holder 11 is moved to move the other sampling cup 12 below the cylinder 5. After use, the hammer 6, cylinder 5, and pallet 9 are cleaned. Compared to components such as stirring blades or spiral lifting structures, stirring paddles, and pipes, the cleaning of this device is simpler, more convenient, and more thorough.

[0029] In a further optimized design, the first connecting mechanism includes a bending plate 13, one end of which is fixedly connected to the output end of the electric telescopic rod 8. Several first fixing plates 14 are fixedly connected to the straight cylinder 5, and the end of the bending plate 13 away from the electric telescopic rod 8 is detachably connected to the first fixing plate 14.

[0030] The electric telescopic rod 8 is detachably connected to the first fixed plate 14 via the bending plate 13. After the sample preparation is completed, the straight cylinder 5 can be removed for cleaning, which is more convenient.

[0031] The scheme is further optimized. The bending plate 13 includes a first connecting plate 15, a second connecting plate 16 and a third connecting plate 17. The second connecting plate 16 is fixedly connected between the first connecting plate 15 and the third connecting plate 17. A number of studs 18 are fixedly connected to the first fixing plate 14. The first connecting plate 15 is fixedly connected to the output end of the electric telescopic rod 8. A first through hole is opened on the third connecting plate 17. The studs 18 pass through the first through hole and are threaded with nuts 19.

[0032] The connection method of the first connecting plate 15, the second connecting plate 16 and the third connecting plate 17 is as follows: Figure 1 As shown, this facilitates the installation of the electric telescopic rod 8. When installing the straight cylinder 5, insert the stud 18 into the first through hole and then lock it with the nut 19. The matching design of the nut 19 and the stud 18 makes installation and disassembly convenient.

[0033] The scheme is further optimized by fixing two second fixing plates 20 on the straight cylinder 5, and fixing first guide tubes 21 on the second fixing plates 20. The two first guide tubes 21 are arranged opposite to each other, and a support plate 9 is inserted inside the first guide tube 21.

[0034] The first guide tube 21 has a rectangular cross-section and is adapted to the direction of the pallet 9. The first guide tube 21 makes it easier for the pallet 9 to move.

[0035] The scheme is further optimized. The transmission mechanism includes a rotating plate 22, which is fixedly connected to the output shaft of the motor 4. A fourth connecting plate 23 is fixedly connected to the back plate 2. A second guide tube 24 is fixedly connected to the fourth connecting plate 23. A fixed shaft 25 is fixedly connected to the rotating plate 22. A first connecting rod 26 is rotatably connected to the fixed shaft 25. A second connecting rod 27 is rotatably connected to the end of the first connecting rod 26 away from the fixed shaft 25. The second connecting rod 27 passes through the second guide tube 24 and is detachably connected to the hammer 6.

[0036] The second guide tube 24 is used to limit the movement direction of the second link 27, so that the second link 27 moves in the vertical direction. The motor 4 drives the rotating plate 22 to rotate, the rotating plate 22 drives the fixed shaft 25 to move, the fixed shaft 25 drives the first link 26 to move, the first link 26 drives the second link 27 to move, and the second link 27 drives the hammer 6 to move up and down. The second link 27 and the hammer 6 are detachably connected, which facilitates the disassembly and cleaning of the hammer 6.

[0037] The scheme is further optimized by fixing a third partition 28 on the back plate 2. A third through hole is opened on the third partition 28, and a funnel 29 is fixedly connected in the third through hole. The funnel 29 is located below the straight cylinder 5.

[0038] The funnel 29 facilitates the entry of the crushed food into the sampling cup 12.

[0039] The design is further optimized by fixing a groove 30 on the base plate 1, and slidingly connecting the cup holder 11 within the groove 30. The groove 30 is located below the funnel 29.

[0040] The cup holder 11 moves within the slide 30, making it easy to replace the sampling cup 12.

[0041] The method of using this device is as follows: Install the tray 9 inside the first guide tube 21 and move the discharge hole 10 away from the straight cylinder 5. Then, put the food into the straight cylinder 5 and start the electric telescopic rod 8. The electric telescopic rod 8 drives the straight cylinder 5 upward through the bending plate 13, so that the hammer 6 enters the straight cylinder 5. Since the movement trajectory of the hammer 6 is fixed, the distance between the hammer 6 and the tray 9 during movement can be adjusted by adjusting the height of the straight cylinder 5, thereby controlling the size of the crushed food particles. After the food is crushed, retract the electric telescopic rod 8 to move the straight cylinder 5 downward, and then move the tray 9 to move the discharge hole 10 into the straight cylinder 5, so that the food falls into the sampling cup 12 below. When changing the sampling cup 12, first move the tray 9 to remove the discharge hole 10, and then move the cup holder 11 to move the other sampling cup 12 below the straight cylinder 5. The cup holder 11 is in the slide groove 30, which is very convenient.

[0042] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A sample preparation device for testing solid food, characterized in that, include: A base plate (1) is fixedly connected to a back plate (2), a first partition plate (3) is fixedly connected to the back plate (2), and a motor (4) is fixedly connected to the first partition plate (3). The crushing assembly includes a straight cylinder (5) and a hammer (6). The motor (4) is connected to the hammer (6) via a transmission mechanism. Two second partitions (7) are fixedly connected to the back plate (2). The two second partitions (7) are located on both sides of the straight cylinder (5). An electric telescopic rod (8) is fixedly connected to the second partition (7). The electric telescopic rod (8) and the straight cylinder (5) are detachably connected via a first connecting mechanism. The straight cylinder (5) and the hammer (6) are arranged vertically and vertically. A support plate (9) is detachably connected to the straight cylinder (5). The support plate (9) is slidably arranged on the straight cylinder (5). A material leakage hole (10) is opened on the support plate (9). A cup holder (11) is slidably disposed on the base plate (1), and a number of sampling cups (12) are placed on the cup holder (11). The sampling cups (12) are located below the straight cylinder (5).

2. The sample preparation device for solid food testing according to claim 1, characterized in that: The first connecting mechanism includes a bending plate (13), one end of which is fixedly connected to the output end of the electric telescopic rod (8), and a plurality of first fixing plates (14) are fixedly connected to the straight cylinder (5). The end of the bending plate (13) away from the electric telescopic rod (8) is detachably connected to the first fixing plate (14).

3. The sample preparation device for solid food testing according to claim 2, characterized in that: The bending plate (13) includes a first connecting plate (15), a second connecting plate (16) and a third connecting plate (17). The second connecting plate (16) is fixedly connected between the first connecting plate (15) and the third connecting plate (17). A plurality of studs (18) are fixedly connected on the first fixing plate (14). The first connecting plate (15) is fixedly connected to the output end of the electric telescopic rod (8). The third connecting plate (17) has a first through hole. The studs (18) pass through the first through hole and are threaded with nuts (19).

4. The sample preparation device for solid food testing according to claim 1, characterized in that: Two second fixing plates (20) are fixedly connected to the straight cylinder (5). A first guide tube (21) is fixedly connected to the second fixing plate (20). The two first guide tubes (21) are arranged opposite to each other. A support plate (9) passes through the first guide tube (21).

5. The sample preparation device for solid food testing according to claim 1, characterized in that: The transmission mechanism includes a rotating plate (22), which is fixedly connected to the output shaft of the motor (4). A fourth connecting plate (23) is fixedly connected to the back plate (2), and a second guide tube (24) is fixedly connected to the fourth connecting plate (23). A fixed shaft (25) is fixedly connected to the rotating plate (22), and a first connecting rod (26) is rotatably connected to the fixed shaft (25). A second connecting rod (27) is rotatably connected to the end of the first connecting rod (26) away from the fixed shaft (25). The second connecting rod (27) passes through the second guide tube (24), and the second connecting rod (27) is detachably connected to the hammer (6).

6. The sample preparation device for solid food testing according to claim 1, characterized in that: A third partition (28) is fixedly connected to the back plate (2). A third through hole is provided on the third partition (28). A funnel (29) is fixedly connected inside the third through hole. The funnel (29) is located below the straight cylinder (5).

7. A sample preparation device for solid food testing according to claim 6, characterized in that: A sliding groove (30) is fixedly connected to the base plate (1), and the cup holder (11) is slidably connected in the sliding groove (30). The sliding groove (30) is located below the funnel (29).