A rotary pesticide residue sampling and detecting device

Abstract

The utility model relates to a pesticide residue sampling detection device of rotary type relates to pesticide residue detection device technical field, this pesticide residue sampling detection device of rotary type, including base, the top of base is provided with detection mechanism and cleaning mechanism, the detection mechanism includes rotary column, the outside fixed coupling of rotary column has detection frame, the bottom fixed coupling of detection frame has the cylinder, the bottom fixed coupling of cylinder has the sampling board, the top fixed coupling of sampling board has the micro -negative pressure pump, one end of micro -negative pressure pump is installed absorption pipe, one end fixed communication of absorption pipe has adsorption needle head, the bottom of sampling board is connected with the sampling piece of clamping, the bottom installation of rotary column has the servo motor, and the beneficial effect is that the pesticide residue sampling detection device of rotary type can continuously carry out sampling detection to the inside and the outside of fruit and vegetable synchronously, improves detection efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of pesticide residue detection devices, specifically a rotary pesticide residue sampling and detection device. Background Technology

[0002] The development of agricultural industrialization has led to an increasing reliance on exogenous substances such as pesticides, antibiotics, and hormones in agricultural production. The use of pesticides in agricultural products remains high, and the irrational use of these substances inevitably results in excessive pesticide residues in agricultural products, affecting consumer safety and, in severe cases, causing illness, developmental abnormalities, or even direct poisoning and death. Excessive pesticide residues also impact agricultural trade. Countries worldwide are paying close attention to pesticide residue issues and have established increasingly stringent limits for pesticide residues in various agricultural and sideline products, necessitating the testing and sampling of pesticide residues.

[0003] According to Chinese Patent Publication No. CN 221350559 U, a sampling device for detecting pesticide residues in fruits and vegetables is disclosed. This device includes a sampling box, with a rotating rod rotatably mounted on the top of the inner cavity of the sampling box. A rotating component is connected to the rotating rod. A connecting groove for the rotating component to move is provided on the side of the sampling box. A sampling plate that can slide up and down inside the sampling box is provided at the bottom of the sampling box. A rotating plate that can rotate inside the sampling box is connected to the top surface of the sampling plate via a telescopic component. The center of the rotating plate is fixedly connected to the bottom of the rotating rod. Multiple sets of serrations for installing the sampling cotton pads are provided at the bottom of the sampling plate. The telescopic component includes a spring installed between the sampling plate and the rotating plate. This invention solves the problem that existing methods for detecting pesticide residues in fruits and vegetables typically involve directly crushing the harvested fruits and vegetables for testing, which is inconvenient, easily leads to unnecessary waste of harvested qualified fruits and vegetables, and is not convenient for simultaneously collecting multiple sets of samples.

[0004] However, the existing technology mentioned above can only collect pesticide components on the surface of the item when using the sampling cotton pad, and cannot collect pesticide components inside the item. Therefore, we urgently need a rotary pesticide residue sampling and detection device. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model proposes a rotary pesticide residue sampling and detection device to solve the problem that existing technologies can only collect pesticide components on the surface of items through sampling cotton pads, but cannot collect pesticide components inside the items.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A rotary pesticide residue sampling and detection device includes a base, and a detection mechanism and a cleaning mechanism are provided on the top of the base;

[0008] The detection mechanism includes a rotating column, a detection frame fixedly connected to the outside of the rotating column, a cylinder fixedly connected to the bottom of the detection frame, a sampling plate fixedly connected to the bottom of the cylinder, a miniature negative pressure pump fixedly connected to the top of the sampling plate, an adsorption tube installed at one end of the miniature negative pressure pump, an adsorption needle fixedly connected to one end of the adsorption tube, a sampling piece snapped into the bottom of the sampling plate, and a servo motor installed at the bottom of the rotating column.

[0009] Preferably, one end of the servo motor is fixedly connected to the inner side of the base, and one end of the rotating column is rotatably connected to one end of the base.

[0010] Preferably, there are two detection frames, which are symmetrically distributed.

[0011] Preferably, one end of the adsorption tube passes through the sampling plate and extends to the bottom of the sampling plate, and the other end of the micro negative pressure pump is equipped with a discharge tube.

[0012] Preferably, the middle of the sampling piece is configured to be through, and a placement plate is installed on the top of the base.

[0013] Preferably, the cleaning mechanism includes a cleaning housing, and an ultrasonic cleaner is installed at one end of the cleaning housing.

[0014] Preferably, the cleaning shell is snapped onto the top of the base.

[0015] Compared with the prior art, the beneficial effects of this utility model's rotary pesticide residue sampling and detection device are:

[0016] First, by placing fruits and vegetables on the placement plate at the top of the base, the cylinder at the bottom of the detection frame lowers the sampling plate until the sampling piece at the bottom of the sampling plate contacts the surface of the fruits and vegetables. The sampling piece collects pesticide components from the surface of the fruits and vegetables. Simultaneously, when the sampling piece contacts the surface, the adsorption needle is inserted into the interior of the fruits and vegetables. A micro-negative pressure pump then drives the adsorption tube to extract the liquid from inside the fruits and vegetables. The adsorbed liquid is then discharged through a discharge pipe at one end of the micro-negative pressure pump and collected through the external casing. The cylinder then rises, causing the adsorption needle to leave the fruits and vegetables. A servo motor then drives the rotating column to rotate, causing the detection frame at that location to leave the placement plate and another detection frame to reach the top of the placement plate. New fruits and vegetables can then be sampled and tested without waiting, allowing for continuous and simultaneous sampling and testing of both the interior and exterior of fruits and vegetables, improving detection efficiency and accuracy.

[0017] Secondly, by pouring cleaning fluid into the cleaning shell, after one adsorption needle has finished adsorbing, it can be rotated to the top of the cleaning shell. Then, the adsorption needle is driven down by a cylinder. At this time, the sampling strip needs to be removed first, and then the adsorption needle enters the cleaning shell. Then, the ultrasonic cleaner performs ultrasonic cleaning on the adsorption needle. Then, the micro negative pressure pump draws the cleaning fluid in the cleaning shell to the adsorption tube and the discharge tube, thereby cleaning the adsorption tube and the discharge tube and avoiding infection in the next use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the overall structure of this utility model;

[0019] Figure 2 This is a perspective view of the testing institution of this utility model;

[0020] Figure 3 This is a cross-sectional view of the adsorption tube of this utility model;

[0021] Figure 4 This is a cross-sectional view of the servo motor of this utility model.

[0022] The components are: 1. Base; 2. Detection mechanism; 3. Cleaning mechanism; 21. Rotating column; 22. Detection frame; 23. Cylinder; 24. Sampling plate; 25. Miniature negative pressure pump; 26. Adsorption tube; 27. Adsorption needle; 28. Sampling sheet; 29. ​​Servo motor; 201. Discharge tube; 31. Cleaning shell; 33. Ultrasonic cleaner. Detailed Implementation

[0023] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0024] For a specific embodiment of the rotary pesticide residue sampling and detection device, please refer to [link to relevant documentation]. Figure 1-4 It includes a base 1, and a detection mechanism 2 and a cleaning mechanism 3 are provided on the top of the base 1;

[0025] The detection mechanism 2 includes a rotating column 21, a detection frame 22 fixedly connected to the outside of the rotating column 21, a cylinder 23 fixedly connected to the bottom of the detection frame 22, a sampling plate 24 fixedly connected to the bottom of the cylinder 23, a miniature negative pressure pump 25 fixedly connected to the top of the sampling plate 24, an adsorption tube 26 installed at one end of the miniature negative pressure pump 25, an adsorption needle 27 fixedly connected to one end of the adsorption tube 26, a sampling piece 28 snapped into the bottom of the sampling plate 24, and a servo motor 29 installed at the bottom of the rotating column 21.

[0026] Through the above technical solution, fruits and vegetables are placed on the placement plate on top of the base 1. Then, the cylinder 23 at the bottom of the detection frame 22 drives the sampling plate 24 to descend until the sampling piece 28 at the bottom of the sampling plate 24 contacts the surface of the fruits and vegetables. The sampling piece 28 collects pesticide components from the surface of the fruits and vegetables. At the same time, when the sampling piece 28 contacts the surface of the fruits and vegetables, the adsorption needle 27 is inserted into the interior of the fruits and vegetables. Then, the micro negative pressure pump 25 drives the adsorption tube 26 to extract the liquid inside the fruits and vegetables. The adsorbed liquid is then discharged through the discharge pipe 201 at one end of the micro negative pressure pump 25 and collected through the outer shell. Then, the cylinder 23 rises, causing the adsorption needle 27 to leave the fruits and vegetables. Then, the servo motor 29 drives the rotating column 21 to rotate, causing the detection frame 22 at that location to leave the placement plate and causing another detection frame 22 to reach the top of the placement plate. Then, new fruits and vegetables can be sampled and tested without waiting. This allows for continuous and simultaneous sampling and testing of the interior and exterior of fruits and vegetables, improving detection efficiency and accuracy.

[0027] Specifically, one end of the servo motor 29 is fixedly connected to the inner side of the base 1, and one end of the rotating column 21 is rotatably connected to one end of the base 1.

[0028] Through the above technical solution, the rotating column 21 is rotatably connected to the base 1, so that the servo motor 29 can drive the rotating column 21 to rotate.

[0029] Specifically, there are two testing frames 22, which are symmetrically distributed.

[0030] The above technical solution, with the two testing racks 22 set in a symmetrical distribution, allows for continuous sampling and testing of fruits and vegetables.

[0031] Specifically, one end of the adsorption tube 26 passes through the sampling plate 24 and extends to the bottom of the sampling plate 24, and the other end of the micro negative pressure pump 25 is equipped with an exhaust tube 201.

[0032] The above technical solution allows the adsorbed liquid to be discharged and collected via the discharge pipe 201.

[0033] Specifically, the middle of the sampling piece 28 is open, and a placement plate is installed on the top of the base 1.

[0034] Through the above technical solution, the middle of the sampling piece 28 is made through to avoid contact between the adsorption needle 27 and the sampling piece 28, which would cause cross-infection. The placement plate allows fruits and vegetables to be placed on it, and the testing rack 22 can reach the top of the placement plate for positioning each time it rotates.

[0035] Specifically, the cleaning mechanism 3 includes a cleaning housing 31, and an ultrasonic cleaner 33 is installed at one end of the cleaning housing 31.

[0036] Through the above technical solution, by pouring cleaning fluid into the cleaning shell 31, after one adsorption needle 27 has finished adsorbing, it can be rotated to the top of the cleaning shell 31. Then, the cylinder 23 drives the adsorption needle 27 to descend. At this time, the sampling sheet 28 needs to be removed first. Then, the adsorption needle 27 enters the cleaning shell 31. Then, the ultrasonic cleaner 33 performs ultrasonic cleaning on the adsorption needle 27. Then, the micro negative pressure pump 25 adsorbs the cleaning fluid in the cleaning shell 31 and delivers it to the adsorption tube 26 and the discharge tube 201, thereby cleaning the adsorption tube 26 and the discharge tube 201 and avoiding infection during the next use.

[0037] Specifically, the cleaning shell 31 is snapped onto the top of the base 1.

[0038] The above technical solution allows for easy removal of the cleaning shell 31 for cleaning via a snap-fit ​​mechanism.

[0039] Its working principle is as follows: Fruits and vegetables are placed on the placement plate at the top of the base 1. Then, the cylinder 23 at the bottom of the detection frame 22 drives the sampling plate 24 to descend until the sampling piece 28 at the bottom of the sampling plate 24 contacts the surface of the fruits and vegetables. The sampling piece 28 collects pesticide components from the surface of the fruits and vegetables. Simultaneously, when the sampling piece 28 contacts the surface of the fruits and vegetables, the adsorption needle 27 is inserted into the interior of the fruits and vegetables. Then, the micro negative pressure pump 25 drives the adsorption tube 26 to extract the liquid inside the fruits and vegetables. The adsorbed liquid is then discharged through the discharge pipe 201 at one end of the micro negative pressure pump 25 and collected through the external casing. Then, the cylinder 23 rises, causing the adsorption needle 27 to leave the fruits and vegetables. Then, the servo motor 29 drives the rotating column 21 to rotate, causing the detection frame 22 at that location to leave the placement plate, and so on. A testing rack 22 reaches the top of the placement plate, and then new fruits and vegetables can be sampled and tested without waiting. This allows for continuous and simultaneous sampling and testing of the internal and external surfaces of fruits and vegetables, improving testing efficiency and accuracy. Then, by pouring cleaning solution into the cleaning shell 31, the adsorption needle 27 can be rotated to the top of the cleaning shell 31 after adsorption. Then, the cylinder 23 drives the adsorption needle 27 to descend. At this time, the sampling sheet 28 needs to be removed first, and then the adsorption needle 27 enters the cleaning shell 31. Then, the ultrasonic cleaner 33 performs ultrasonic cleaning on the adsorption needle 27. Then, the micro negative pressure pump 25 adsorbs the cleaning solution in the cleaning shell 31 and delivers it to the adsorption tube 26 and the discharge tube 201, thereby cleaning the adsorption tube 26 and the discharge tube 201 to avoid contamination in the next use.

[0040] It should be noted that, although specific 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 variations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary pesticide residue sampling and detection device, comprising a base (1), characterized in that: The base (1) is provided with a detection mechanism (2) and a cleaning mechanism (3) on its top; The detection mechanism (2) includes a rotating column (21), a detection frame (22) is fixedly connected to the outside of the rotating column (21), a cylinder (23) is fixedly connected to the bottom of the detection frame (22), a sampling plate (24) is fixedly connected to the bottom of the cylinder (23), a micro negative pressure pump (25) is fixedly connected to the top of the sampling plate (24), an adsorption tube (26) is installed at one end of the micro negative pressure pump (25), an adsorption needle (27) is fixedly connected to one end of the adsorption tube (26), a sampling piece (28) is snapped into the bottom of the sampling plate (24), and a servo motor (29) is installed at the bottom of the rotating column (21).

2. The rotary pesticide residue sampling and detection device according to claim 1, characterized in that: One end of the servo motor (29) is fixedly connected to the inner side of the base (1), and one end of the rotating column (21) is rotatably connected to one end of the base (1).

3. The rotary pesticide residue sampling and detection device according to claim 1, characterized in that: There are two testing frames (22), and the two testing frames (22) are symmetrically distributed.

4. The rotary pesticide residue sampling and detection device according to claim 1, characterized in that: One end of the adsorption tube (26) passes through the sampling plate (24) and extends to the bottom of the sampling plate (24), and the other end of the micro negative pressure pump (25) is equipped with a discharge tube (201).

5. The rotary pesticide residue sampling and detection device according to claim 1, characterized in that: The middle part of the sampling piece (28) is configured to be through, and a placement plate is installed on the top of the base (1).

6. The rotary pesticide residue sampling and detection device according to claim 1, characterized in that: The cleaning mechanism (3) includes a cleaning shell (31), and an ultrasonic cleaner (33) is installed at one end of the cleaning shell (31).

7. The rotary pesticide residue sampling and detection device according to claim 6, characterized in that: The cleaning shell (31) is snapped onto the top of the base (1).

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