Fruit peel surface pesticide residue detecting and sampling device

Abstract

The utility model relates to a fruit peel surface pesticide residue detecting and sampling device, which belongs to the technical field of fruit peel detection and comprises a base, a mounting box fixedly connected to the top of the base, an alternating disc rotationally connected to the upper surface of the mounting box and a placing vessel fixedly connected to the top of the alternating disc. A switching mechanism extending to the upper surface of the mounting box is arranged in the mounting box, and a sampling mechanism is arranged on the upper surface of the base. According to the fruit peel surface pesticide residue detecting and sampling device, a double-shaft motor is started through a controller to drive a left end output shaft to start to rotate, a first transmission gear is driven to rotate to drive a first driven gear and a transmission shaft to rotate, and a heart-shaped sliding groove in a rotating disc guides a pin follower to move along a heart-shaped track; the movement of the pin follower drives the rotating shaft and the rotation disc to rotate intermittently, so that the rotation of the placing vessels is realized, the automatic rotation of peel samples is realized, manual replacement is not needed, the sampling efficiency is greatly improved, and the advantage of high sampling efficiency is achieved.

Description

A sampling device for detecting pesticide residues on fruit peel surfaces Technical Field

[0001] This utility model relates to the field of fruit peel detection technology, specifically a sampling device for detecting pesticide residues on the surface of fruit peels. Background Technology

[0002] Countries around the world attach great importance to the issue of pesticide residues and have set increasingly strict limits on pesticide residues in various agricultural and sideline products.

[0003] A sampling device for detecting pesticide residues on fruit peel surfaces is needed during fruit peel testing. A search revealed a patent document with publication number CN213632718U that discloses such a device. The device includes a marking cap and a sampling base, with the marking cap threadedly connected to the sampling base. The marking cap comprises a cap body, a threaded tube, and a marking element. The threaded tube is located at the lower end of the cap body, and the marking element is located at the upper end. This invention facilitates targeted statistical analysis by writing the fruit information corresponding to the sampling element on a writing plate, reducing the hassle of manual recording and lowering the error rate. The fruit to be tested is pushed into the first and second clips. The first sampling plate has a small cutting effect, cutting out the fruit peel and retaining it on the first sampling plate for immediate testing.

[0004] However, the sampling method of the novel pesticide residue detection and sampling device on fruit peel surface relies on manual operation. Manual sampling makes it difficult to ensure the uniformity and consistency of each sampling, resulting in problems such as uneven sampling, low efficiency, and easy contamination. In addition, the sampling device is a single-function device and cannot achieve continuous semi-automatic operation, which cannot meet the usage requirements. Therefore, a new pesticide residue detection and sampling device on fruit peel surface is proposed to solve the problems mentioned above. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a sampling device for detecting pesticide residues on fruit peel surfaces. It has the advantages of high sampling efficiency and strong practicality. It solves the problems of existing sampling methods for detecting pesticide residues on fruit peel surfaces relying on manual operation, which makes it difficult to ensure the uniformity and consistency of each sampling, resulting in uneven sampling, low efficiency, and easy contamination. In addition, the sampling device is a single-function device and cannot achieve continuous semi-automatic operation, thus failing to meet the needs of use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for detecting pesticide residues on the surface of fruit peels, comprising a base, a mounting box fixedly connected to the top of the base, a rotating disc rotatably connected to the upper surface of the mounting box, and a placement dish fixedly connected to the top of the rotating disc. The mounting box is provided with a switching mechanism extending to its upper surface, and the upper surface of the base is provided with a sampling mechanism.

[0007] The switching mechanism includes a rotating shaft rotatably connected to the bottom wall of the mounting box, a pin follower fixedly connected to the outside of the rotating shaft, a transmission shaft rotatably connected to the inside of the mounting box, a turntable fixedly connected to the outside of the transmission shaft, a heart-shaped groove opened inside the turntable, and a drive mechanism set inside the mounting box and extending to its outside.

[0008] The sampling mechanism includes a mounting frame fixedly connected to the top of the base, a liquid storage tank fixedly installed on one side of the mounting frame, an electric push rod fixedly installed on the upper surface of the mounting frame, a connecting plate fixedly connected to the output end of the electric push rod, a drip head fixedly installed inside the connecting plate, and a stirring structure set on the upper surface of the base.

[0009] Furthermore, the rotating disk is fixedly connected to the top of the rotating shaft, and there are several placement dishes, which are arranged in a ring shape on the upper surface of the rotating disk.

[0010] Furthermore, the pin follower is slidably connected to the inside of the heart-shaped groove and extends to its outside, and the outer diameter of the pin follower is adapted to the inner diameter of the heart-shaped groove.

[0011] Furthermore, the drive mechanism includes a dual-axis motor fixedly installed inside the mounting box, a first transmission gear fixedly installed on the left output shaft of the dual-axis motor, and a first driven gear fixedly installed outside the transmission shaft, wherein the first transmission gear and the first driven gear are meshed with each other.

[0012] Furthermore, a miniature delivery pump is fixedly installed on the outside of the liquid storage tank, and a flexible tube is fixedly connected between the miniature delivery pump and the drip head. A liquid filling port is fixedly connected to the top of the liquid storage tank.

[0013] Furthermore, the stirring structure includes a stirring shaft rotatably connected to the top of the base and extending into the interior of the storage tank, stirring blades fixedly connected to the outside of the stirring shaft, and a synchronization structure disposed on the upper surface of the base.

[0014] Furthermore, the synchronization structure includes a second driven gear fixedly connected to the outside of the stirring shaft and a second transmission gear fixedly mounted on the right output shaft of the dual-shaft motor, wherein the second driven gear and the second transmission gear are meshed with each other.

[0015] Compared with the prior art, this utility model provides a sampling device for detecting pesticide residues on the surface of fruit peels, which has the following beneficial effects:

[0016] 1. This fruit peel surface pesticide residue detection and sampling device starts the left output shaft to rotate via a dual-axis motor driven by a controller. This rotation drives the first transmission gear to rotate, which in turn drives the first driven gear and the transmission shaft to rotate. The heart-shaped groove inside the turntable guides the pin follower to move along the heart-shaped trajectory. The movement of the pin follower drives the rotating shaft and the rotating disk to rotate intermittently, realizing the rotation of the placed dishes. This achieves automatic rotation of fruit peel samples without manual replacement, greatly improving sampling efficiency and achieving the advantage of high sampling efficiency.

[0017] 2. This pesticide residue detection and sampling device on fruit peel surfaces, when driven by a dual-shaft motor, has its output shaft rotating the second transmission gear. This causes the stirring shaft to rotate along with the second driven gear, which in turn rotates the stirring blades inside the storage tank. This ensures the uniformity of the detection solution. A micro-pump is then activated to draw the detection solution from the storage tank through a hose and deliver it to the drip head, where it is evenly dripped onto the fruit peel sample. The automated sampling and stirring operations reduce manual intervention, improve detection efficiency and accuracy, and offer the advantage of high practicality. Attached Figure Description

[0018] Figure 1 is a three-dimensional structural view of this utility model;

[0019] Figure 2 is a three-dimensional structural view of the switching mechanism of this utility model;

[0020] Figure 3 is a three-dimensional structural view of the switching mechanism and sampling mechanism of this utility model;

[0021] Figure 4 is a three-dimensional view of the sampling mechanism of this utility model.

[0022] In the diagram: 1. Base; 2. Mounting box; 3. Rotating disc; 4. Placement dish; 5. Rotating shaft; 6. Pin follower; 7. Transmission shaft; 8. Turntable; 9. Heart-shaped slide; 10. Dual-shaft motor; 11. First transmission gear; 12. First driven gear; 13. Mounting bracket; 14. Liquid storage tank; 15. Stirring shaft; 16. Stirring blade; 17. Second driven gear; 18. Second transmission gear; 19. Electric push rod; 20. Connecting plate; 21. Dropper head; 22. Miniature transfer pump. Detailed Implementation

[0023] 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.

[0024] Please refer to Figures 1 to 4. In this embodiment, a sampling device for detecting pesticide residues on the surface of fruit peel includes a base 1, a mounting box 2 fixedly connected to the top of the base 1, a rotating disc 3 rotatably connected to the upper surface of the mounting box 2, and a placement dish 4 fixedly connected to the top of the rotating disc 3. The mounting box 2 is provided with a switching mechanism extending to its upper surface, and the upper surface of the base 1 is provided with a sampling mechanism. The switching mechanism includes a rotating shaft 5 rotatably connected to the bottom wall of the mounting box 2, a pin follower 6 fixedly connected to the outside of the rotating shaft 5, a transmission shaft 7 rotatably connected to the inside of the mounting box 2, a turntable 8 fixedly connected to the outside of the transmission shaft 7, a heart-shaped groove 9 opened inside the turntable 8, and a drive mechanism provided inside the mounting box 2 and extending to its outside.

[0025] The rotating disk 3 is fixedly connected to the top of the rotating shaft 5, and there are several placement dishes 4, which are arranged in a ring shape on the upper surface of the rotating disk 3.

[0026] Specifically, the pin follower 6 is slidably connected inside the heart-shaped groove 9 and extends to its outside, with the outer diameter of the pin follower 6 matching the inner diameter of the heart-shaped groove 9. The rotation of the drive shaft 7 drives the turntable 8 to rotate, and the heart-shaped groove 9 inside the turntable 8 rotates accordingly. Because the pin follower 6 is slidably connected inside the heart-shaped groove 9 and extends to its outside, and the outer diameter of the pin follower 6 matches the inner diameter of the heart-shaped groove 9, the pin follower 6 moves along the path of the heart-shaped groove 9 when it rotates. During this process, because the pin follower 6 is fixedly connected to the rotating shaft 5, the rotating shaft 5 and the rotating disk 3 also rotate at a certain angle, and the placement dish 4 on the rotating disk 3 completes one rotation, realizing the automatic replacement of the placement dish 4.

[0027] It should be noted that the drive mechanism includes a dual-axis motor 10 fixedly installed inside the mounting box 2, a first transmission gear 11 fixedly installed on the left output shaft of the dual-axis motor 10, and a first driven gear 12 fixedly installed outside the transmission shaft 7. The first transmission gear 11 and the first driven gear 12 are meshed with each other. Automated rotation reduces the number of manual operation steps, reduces the labor intensity of operators, and reduces errors caused by improper manual operation. Each placement dish 4 can receive fruit peel samples evenly during the rotation process, ensuring the uniformity of sampling and thus improving the accuracy of the test results.

[0028] In this embodiment, the sampling mechanism includes a mounting frame 13 fixedly connected to the top of the base 1, a liquid storage tank 14 fixedly installed on one side of the mounting frame 13, an electric push rod 19 fixedly installed on the upper surface of the mounting frame 13, a connecting plate 20 fixedly connected to the output end of the electric push rod 19, a dripping head 21 fixedly installed inside the connecting plate 20, and a stirring structure disposed on the upper surface of the base 1. After the detection liquid is stirred evenly, the controller activates the electric push rod 19 to extend and retract, pushing the connecting plate 20 and the dripping head 21 on it downwards until the dripping head 21 approaches or contacts the fruit peel sample in the placement dish 4.

[0029] The storage tank 14 is equipped with a micro-pump 22, which is fixedly connected to the drip head 21 by a hose. The top of the storage tank 14 is fixedly connected to a liquid filling port.

[0030] Specifically, the stirring structure includes a stirring shaft 15 rotatably connected to the top of the base 1 and extending into the liquid storage tank 14, stirring blades 16 fixedly connected to the outside of the stirring shaft 15, and a synchronization structure disposed on the upper surface of the base 1.

[0031] It should be noted that the synchronization structure includes a second driven gear 17 fixedly connected to the outside of the stirring shaft 15 and a second transmission gear 18 fixedly installed on the right output shaft of the dual-shaft motor 10. The second driven gear 17 and the second transmission gear 18 are meshed with each other.

[0032] The working principle of the above embodiments is as follows:

[0033] In use, the fruit peel samples to be tested are placed sequentially into the placement dishes 4, which are arranged in a ring on the upper surface of the rotating disk 3. The controller starts the dual-axis motor 10, driving the left output shaft to rotate, which in turn drives the first transmission gear 11 to rotate, driving the first driven gear 12 and the transmission shaft 7 to rotate. The heart-shaped groove 9 inside the rotating disk 8 guides the pin, which moves along the heart-shaped trajectory of the follower 6. The movement of the pin drives the rotating shaft 5 and the rotating disk 3 to rotate intermittently, thus rotating the placement dishes 4. When the dual-axis motor 10 is driven, its output shaft drives... The second drive gear 18 rotates, causing the stirring shaft 15 to rotate along with the second driven gear 17. This drives the stirring blade 16 to rotate inside the storage tank 14, thoroughly stirring the test liquid to ensure its uniformity. The micro-pump 22 is then activated to draw the test liquid from the storage tank 14 through a hose and deliver it to the drip head 21, where it is evenly dripped onto the fruit peel sample. During or after sampling, the switching mechanism automatically rotates the placement dish 4, ensuring the next fruit peel sample to be tested is directly below the drip head 21. The stirring, sampling, and delivery steps are repeated to achieve a continuous, semi-automated sampling process.

[0034] The installation method, connection method, or setting method disclosed in this embodiment are all common mechanical connections.

[0035] Any connection method that can achieve its beneficial effect can be implemented. In addition, all electrical components in this embodiment are electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing public power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for detecting pesticide residues on the surface of fruit peels, characterized in that: The system includes a base (1), a mounting box (2) fixedly connected to the top of the base (1), a rotating disk (3) rotatably connected to the upper surface of the mounting box (2), and a placement dish (4) fixedly connected to the top of the rotating disk (3). The mounting box (2) is provided with a switching mechanism extending to its upper surface, and the upper surface of the base (1) is provided with a sampling mechanism. The switching mechanism includes a rotating shaft (5) rotatably connected to the bottom wall of the mounting box (2), a pin follower (6) fixedly connected to the outside of the rotating shaft (5), a transmission shaft (7) rotatably connected to the inside of the mounting box (2), and a transmission shaft (7) fixedly connected to the transmission shaft. The sampling mechanism includes a rotating disk (8) outside the shaft (7), a heart-shaped groove (9) inside the rotating disk (8), and a drive mechanism that is set inside the mounting box (2) and extends to its outside; the sampling mechanism includes a mounting frame (13) fixedly connected to the top of the base (1), a liquid storage tank (14) fixedly installed on one side of the mounting frame (13), an electric push rod (19) fixedly installed on the upper surface of the mounting frame (13), a connecting plate (20) fixedly connected to the output end of the electric push rod (19), a drip head (21) fixedly installed inside the connecting plate (20), and a stirring structure set on the upper surface of the base (1).

2. The sampling device for detecting pesticide residues on the surface of fruit peels according to claim 1, characterized in that: The rotating disk (3) is fixedly connected to the top of the rotating shaft (5), and there are several placement dishes (4). The several placement dishes (4) are arranged in a ring shape on the upper surface of the rotating disk (3).

3. The sampling device for detecting pesticide residues on the surface of fruit peels according to claim 1, characterized in that: The pin follower (6) is slidably connected to the inside of the heart-shaped groove (9) and extends to its outside. The outer diameter of the pin follower (6) is adapted to the inner diameter of the heart-shaped groove (9).

4. The sampling device for detecting pesticide residues on the surface of fruit peels according to claim 1, characterized in that: The drive mechanism includes a dual-axis motor (10) fixedly installed inside the mounting box (2), a first transmission gear (11) fixedly installed on the output shaft at the left end of the dual-axis motor (10), and a first driven gear (12) fixedly installed outside the transmission shaft (7). The first transmission gear (11) and the first driven gear (12) are meshed with each other.

5. The sampling device for detecting pesticide residues on the surface of fruit peels according to claim 1, characterized in that: A micro-pump (22) is fixedly installed on the outside of the liquid storage tank (14). A hose is fixedly connected between the micro-pump (22) and the drip head (21). A liquid filling port is fixedly connected to the top of the liquid storage tank (14).

6. The sampling device for detecting pesticide residues on the surface of fruit peel according to claim 1, characterized in that: The stirring structure includes a stirring shaft (15) rotatably connected to the top of the base (1) and extending into the liquid storage tank (14), stirring blades (16) fixedly connected to the outside of the stirring shaft (15), and a synchronization structure set on the upper surface of the base (1).

7. The fruit peel surface pesticide residue detection and sampling device according to claim 6, characterized in that: The synchronization structure includes a second driven gear (17) fixedly connected to the outside of the stirring shaft (15) and a second transmission gear (18) fixedly installed on the right output shaft of the dual-shaft motor (10). The second driven gear (17) and the second transmission gear (18) are meshed with each other.

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