Pesticide residue detector for melons, fruits and vegetables

Abstract

The utility model discloses a fruit and vegetable pesticide residue detector, which relates to the technical field of pesticide residue detection and comprises a detector main body, a display screen is mounted at the top of the detector main body, a bearing column is fixedly connected to the inner wall of the detector main body, a rotating component is arranged in the bearing column, and a bearing component is arranged above the bearing column. A glass test tube is arranged on the outer side of the bearing column, and a spectrophotometer is fixedly mounted on the outer surface of the bearing column. The bearing and limiting effects of the glass test tube can be achieved through the bearing assembly, intermittent rotation of the bearing assembly and the glass test tube can be achieved through the rotating assembly, and detection of a sample in the glass test tube can be achieved through the spectrophotometer and the detector; the rotating assembly, the bearing assembly, the glass test tube, the spectrophotometer and the detector are matched for use, so that samples in the glass test tube can be continuously and rapidly detected, and the detection efficiency of the samples is improved.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection technology, specifically a pesticide residue detector for fruits and vegetables. Background Technology

[0002] As people's living standards improve, they are paying more and more attention to food safety. As an important part of daily diet, the pesticide residue of fruits and vegetables is directly related to people's health, making the detection of pesticide residues in fruits and vegetables crucial.

[0003] Existing pesticide residue testing equipment for fruits and vegetables is cumbersome to operate manually and is prone to human error, affecting the accuracy of test results. On the other hand, the testing process has poor continuity and long sample switching time, resulting in slow overall testing speed and making it difficult to meet the needs of large-scale testing tasks.

[0004] Therefore, a pesticide residue detector for fruits and vegetables is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a pesticide residue detector for fruits and vegetables.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pesticide residue detector for fruits and vegetables, comprising a detector body, a display screen mounted on the top of the detector body, a support column fixedly connected to the inner wall of the detector body, a rotating component inside the support column, a support component above the support column, a glass test tube on the outer side of the support column, a spectrophotometer fixedly mounted on the outer surface of the support column, and a detector installed inside the detector body.

[0007] Preferably, in the above-mentioned pesticide residue detector for fruits and vegetables, the rotating component includes a servo motor fixedly installed on the inner wall of the support column, the output end of the servo motor is fixedly connected to a rotating shaft, and the end of the rotating shaft away from the servo motor is fixedly connected to a drive gear.

[0008] Preferably, in the above-mentioned pesticide residue detector for fruits and vegetables, the outer surface of the driving gear is meshed with a driven gear, the inner wall of the driven gear is fixedly connected to a limiting shaft, and the outer surface of the limiting shaft is rotatably connected to the inner wall of the bearing column.

[0009] Preferably, in the above-mentioned pesticide residue detector for fruits and vegetables, the top of the limiting shaft is fixedly connected to a limiting wheel, and the outer surface of the limiting wheel is rotatably connected to the inner wall of the bearing column.

[0010] Preferably, in the above-mentioned pesticide residue detector for fruits and vegetables, the supporting component includes a turntable fixedly connected to the top of the limiting wheel, the turntable having balls inside, and the outer surface of the balls rolling in contact with the top of the supporting column.

[0011] Preferably, in the above-mentioned pesticide residue detector for fruits and vegetables, the bottom of the turntable is fixedly connected to a support frame, the inside of the support frame is provided with a placement groove, and the inner wall of the placement groove is slidably connected to the outer surface of the glass test tube.

[0012] The beneficial effects of this utility model are as follows: By setting a supporting component, this utility model can achieve the supporting and limiting effect of the glass test tube; by setting a rotating component, it can achieve intermittent rotation of the supporting component and the glass test tube; by setting a spectrophotometer and a detector, it can achieve the detection of the sample inside the glass test tube; by using the rotating component, the supporting component, the glass test tube, the spectrophotometer and the detector in cooperation with each other, it can achieve continuous and rapid detection of the sample inside the glass test tube, thereby improving the detection efficiency and detection accuracy of the sample. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the rotating component of this utility model;

[0016] Figure 4 This is a schematic diagram of the load-bearing component of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Detector body; 2. Display screen; 3. Support column; 4. Rotating assembly; 401. Servo motor; 402. Rotating shaft; 403. Drive gear; 404. Driven gear; 405. Limiting shaft; 406. Limiting wheel; 5. Supporting assembly; 501. Turntable; 502. Ball bearing; 503. Support frame; 504. Placement slot; 6. Glass test tube; 7. Spectrophotometer; 8. Detector. Detailed Implementation

[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0020] like Figures 1-4As shown, a pesticide residue detector for fruits and vegetables includes a detector body 1. A display screen 2 is installed on the top of the detector body 1. The display screen 2 is a high-definition LCD screen, which can clearly and intuitively display the test results, making it convenient for the testers to quickly read the data. The screen surface is covered with an anti-glare coating, which can ensure that the testers can clearly see the screen content even in complex lighting environments.

[0021] A support column 3 is fixedly connected to the inner wall of the main body 1 of the detector. The support column 3 is cylindrical and vertically fixed inside the main body 1 of the detector, providing stable support for the entire rotating assembly 4 and the support assembly 5. The surface of the support column 3 is smooth, and when it cooperates with the limiting shaft 405 and the limiting wheel 406 in the rotating assembly 4, it can effectively reduce frictional resistance and ensure smooth rotation.

[0022] The support column 3 houses a rotating assembly 4. The rotating assembly 4 includes a servo motor 401 fixedly mounted on the inner wall of the support column 3. The motor housing is made of aluminum alloy, which aids in heat dissipation and ensures stable performance during long-term operation. A rotating shaft 402 is fixedly connected to the output end of the servo motor 401. The rotating shaft 402 is made of high-strength alloy steel, possessing high strength and a smooth surface. One end of the rotating shaft 402 is tightly connected to the servo motor 401, enabling stable power transmission; the other end is fixedly connected to a drive gear 403. The drive gear 403 is made of high-quality steel, with its tooth surface heat-treated for high hardness and wear resistance. When meshing with the driven gear 404, it achieves high transmission efficiency and low noise. The outer surface of the drive gear 403 meshes with the driven gear 404, cooperating with the drive gear 403 to achieve speed and torque conversion.

[0023] A limiting shaft 405 is fixedly connected to the inner wall of the driven gear 404. The limiting shaft 405 is a cylindrical shaft made of stainless steel, and its outer surface is rotatably connected to the inner wall of the bearing column 3. The function of the limiting shaft 405 is to restrict the axial movement of the driven gear 404, ensuring the stability of the gear transmission, and at the same time providing stable rotational support for the bearing assembly 5. A limiting wheel 406 is fixedly connected to the top of the limiting shaft 405. The limiting wheel 406 is disc-shaped, and its outer surface is rotatably connected to the inner wall of the bearing column 3. The limiting wheel 406 plays a positioning role during rotation, preventing the bearing assembly 5 from shaking or shifting during rotation, and ensuring the accuracy of the detection.

[0024] A support assembly 5 is disposed above the support column 3. The support assembly 5 includes a turntable 501 fixedly connected to the top of the limiting wheel 406. The turntable 501 is circular and contains ball bearings 502. The outer surface of the ball bearings 502 makes rolling contact with the top of the support column 3, which converts the sliding friction between the turntable 501 and the support column 3 into rolling friction, greatly reducing rotational friction and ensuring the smooth rotation of the turntable 501. This prevents the liquid sample placed on it from being affected by shaking, thus improving the stability of liquid detection.

[0025] A support frame 503 is fixedly connected to the bottom of the turntable 501. The support frame 503 is made of engineering plastic injection molding, which has good flexibility and corrosion resistance. A placement groove 504 is opened inside the support frame 503. The inner wall of the placement groove 504 is slidably connected to the outer surface of the glass test tube 6. The shape of the placement groove 504 is adapted to the glass test tube 6, which can tightly fix the glass test tube 6 and prevent it from shifting during rotation. At the same time, the inner wall of the placement groove 504 has a certain degree of elasticity, which can accommodate glass test tubes 6 of different sizes and specifications, thus improving the versatility of the equipment.

[0026] A glass test tube 6 is provided on the outside of the support column 3. The glass test tube 6 is made of high borosilicate glass, which has good chemical stability and optical performance. It will not produce a chemical reaction with the sample and has good light transmittance, which is beneficial for the spectrophotometer 7 to detect the sample. The glass test tube 6 is cylindrical in shape and its size is carefully designed to perfectly match the placement groove 504 of the support frame 503, ensuring the stability of the glass test tube 6 during the detection process.

[0027] A spectrophotometer 7 is fixedly installed on the outer surface of the support column 3. The spectrophotometer 7 is a key component for detecting pesticide residues in samples. It can emit light of a specific wavelength and accurately measure the change in light intensity transmitted through the sample. The outer shell of the spectrophotometer 7 is made of metal, which serves to shield against external electromagnetic interference and ensure the accuracy of the detection results.

[0028] The detector 8 is installed inside the main body 1 of the detector. The detector 8 works in conjunction with the spectrophotometer 7 to convert the light signal detected by the spectrophotometer 7 into an electrical signal, and processes and calculates it through the internal circuit. The detector 8 can quickly and accurately detect the slight changes in the light signal, providing a strong guarantee for the accuracy of the detection results.

[0029] Working principle: First, the fruit and vegetable samples to be tested are prepared as liquid specimens and placed in glass test tubes 6. These tubes are then placed in the placement slot 504 of the support assembly 5. The equipment is started, and the servo motor 401 in the rotating assembly 4 begins to work. The output shaft of the servo motor 401 drives the rotating shaft 402 to rotate. The drive gear 403 connected to one end of the rotating shaft 402 rotates accordingly. The drive gear 403 meshes with the driven gear 404, thereby driving the driven gear 404 to rotate. The limiting shaft 405 fixedly connected to the inner wall of the driven gear 404 and the limiting wheel 406 fixedly connected to the top rotate synchronously, causing the turntable 501 of the support assembly 5 to rotate stably. The rotating balls 502 inside the turntable 501 interact with the bearing... The top of the carrier column 3 makes rolling contact, reducing rotational friction and ensuring the smooth rotation of the turntable 501. As the turntable 501 rotates, the glass test tube 6 containing the sample moves intermittently to the detection position between the spectrophotometer 7 and the detector 8. The spectrophotometer 7 emits light of a specific wavelength that passes through the sample liquid in the glass test tube 6. The pesticide residues in the sample absorb some of the light. The detector 8 detects the change in the intensity of the transmitted light and converts the light signal into an electrical signal. After processing and calculation by the internal circuit, the pesticide residue detection result is finally displayed on the display screen 2. After completing the detection of one sample, the turntable 501 continues to rotate, sending the next sample to the detection area. This cycle is repeated to achieve continuous and rapid detection.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A melon fruit and vegetable pesticide residue detector, comprising a detector main body (1), characterized in that: The top of the detector body (1) is provided with a display screen (2), the inner wall of the detector body (1) is fixedly connected with a bearing column (3), the inside of the bearing column (3) is provided with a rotating assembly (4), the upper portion of the bearing column (3) is provided with a bearing assembly (5), the outer side of the bearing column (3) is provided with a glass test tube (6), the outer surface of the bearing column (3) is fixedly provided with a spectrophotometer (7), and the inside of the detector body (1) is provided with a detector (8).

2. The agricultural pesticide residue detector for melons, fruits and vegetables according to claim 1, characterized in that: The rotating assembly (4) comprises a servo motor (401) fixedly installed on the inner wall of the bearing column (3), an output end of the servo motor (401) is fixedly connected with a rotating shaft (402), and one end of the rotating shaft (402) away from the servo motor (401) is fixedly connected with a driving gear (403).

3. The agricultural pesticide residue detector for melons, fruits and vegetables according to claim 2, characterized in that: The outer surface of the driving gear (403) is meshedly connected with a driven gear (404), the inner wall of the driven gear (404) is fixedly connected with a limiting shaft (405), and the outer surface of the limiting shaft (405) is rotatably connected with the inner wall of the bearing column (3).

4. The agricultural pesticide residue detector for melons, fruits and vegetables according to claim 3, characterized in that: The top of the limiting shaft (405) is fixedly connected with a limiting wheel (406), and the outer surface of the limiting wheel (406) is rotatably connected with the inner wall of the bearing column (3).

5. The agricultural pesticide residue detector for melons, fruits and vegetables according to claim 4, characterized in that: The bearing assembly (5) comprises a rotating disc (501) fixedly connected to the top of the limiting wheel (406), the inside of the rotating disc (501) is provided with a ball (502), and the outer surface of the ball (502) is in rolling contact with the top of the bearing column (3).

6. The agricultural pesticide residue detector for melons, fruits and vegetables according to claim 5, characterized in that: The bottom of the rotating disc (501) is fixedly connected with a bearing frame (503), the inside of the bearing frame (503) is provided with a placing groove (504), and the inner wall of the placing groove (504) is slidably connected with the outer surface of the glass test tube (6).

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