Device for sampling pesticide residues in crops

Abstract

The utility model relates to a sampling device for pesticide residues in crops, which belongs to the technical field of pesticide detection and comprises a sampling tube, and a cutting structure is arranged on the sampling tube. The cutting structure comprises a fixed barrel mounted on the outer side of one end of the sampling pipe, a spring is mounted in the fixed barrel, a movable barrel movably inserted into the fixed barrel is mounted at one end of the spring, a rotating pipe is rotatably connected to the interior of the movable barrel, a hexagonal block is movably clamped in the rotating pipe, and the hexagonal block is movably connected with the sampling pipe. And a circular plate is mounted on one side of the hexagonal block. By arranging the cutting structure, a sample is taken down from crops by rotating a flaky cutter, and the sample falls into a sampling tube to be in contact with a buffering agent, so that in the process, the contact between the hand and the crops is reduced, the flaky cutter is prevented from cutting a plurality of crops, the intersection of pesticide residues on the plurality of crops is reduced, and the pesticide quality is improved. The accuracy of crop pesticide sampling detection results is prevented from being affected as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of pesticide detection, and particularly to a sampling device for pesticide residues in crops. Background Art

[0002] In order to ensure better growth of crops, pesticides are usually sprayed to keep them away from pests and various diseases. However, excessive spraying of pesticides may result in a large amount of pesticide residues on the crops, which may affect human health when consumed. Therefore, it is generally necessary to sample the crops for pesticide residues and conduct inspections.

[0003] Upon investigation, the disclosure (announcement) number: CN212110837U discloses a sampling device for pesticide residue detection. This technology discloses "including a sampling box and a sampling chamber, wherein both ends of the sampling box are provided with sampling chambers, and the sampling chambers are installed inside the sampling chambers, and plugs are installed at both ends of the bottom of the filter. The top of the sampling chamber away from the sampling box is provided with a slide, and the slides are installed with sample pressing plates through sliders, and the tops of the sample pressing plates are installed with push rods. The utility model is equipped with a return spring for use. When the push plate stops pushing, the elastic action of the return spring pushes the push plate to reset. The tester can repeatedly press and release the push plate, causing the sample pressing plate to move up and down repeatedly inside the sampling chamber, which can cause the water inside the sampling chamber to fluctuate. The sample pressing plate can repeatedly collide with the crops in the water, and the dirt and pesticides attached to the surface of the crops can be removed by external force, which is conducive to improving the detection efficiency."

[0004] During use, the aforementioned comparative documents generally require the use of scissors or other cutting tools to remove samples from crops, and then place the samples on a sampling device for collection and reaction. During this process, a pair of scissors may sample multiple crops, which can easily lead to cross-pollination of pesticide residues on multiple crops, and thus easily affect the accuracy of crop pesticide sampling and testing results;

[0005] In order to solve the above problems, this application proposes a pesticide residue sampling device in crops. Summary of the Invention

[0006] The utility model aims at solving the technical problems existing in the prior art and provides a device for sampling pesticide residues in crops.

[0007] The present invention provides a technical solution to the above technical problem as follows: a device for sampling pesticide residues in crops, comprising a sampling tube, wherein the sampling tube is provided with a cutting structure;

[0008] The cutting structure includes a fixed cylinder installed on the outside of one end of the sampling tube, a spring installed in the fixed cylinder, a movable cylinder installed at one end of the spring and movably inserted into the fixed cylinder, a rotating tube rotatably connected to the interior of the movable cylinder, a hexagonal block movably clamped inside the rotating tube, a circular plate installed on one side of the hexagonal block, an annular mounting plate installed on the circular plate, and a sheet cutter installed on the annular mounting plate.

[0009] One end of the sampling tube is connected to a needle tube, and a protective sleeve is provided on the needle tube. The arrangement of the needle tube and the protective sleeve facilitates the discharge of the sampling liquid.

[0010] Bolts are installed on the annular mounting plate, and an annular fixing plate is installed on the fixing cylinder. The annular mounting plate is connected to the annular fixing plate by bolts. By arranging the bolts and the annular fixing plate, the position of the annular mounting plate is easily fixed.

[0011] A sealing ring is provided at one end of the sampling tube, and the sealing ring is located between the sampling tube and the flaky cutter. The sealing ring is provided to seal the flaky cutter and the sampling tube.

[0012] The sheet cutter is provided with an air blowing bag, the output end of which faces the interior of the sampling tube. The air blowing bag is provided to apply pressure to the interior of the sampling tube.

[0013] An annular groove is provided at one end of the sampling tube, a filter cartridge is inserted into the interior of the sampling tube, an annular strap is installed on the outside of one end of the filter cartridge, and the annular strap is placed in the sampling tube through the annular groove. The annular groove, the filter cartridge and the annular strap are provided to intercept samples.

[0014] The beneficial effects of this utility model are:

[0015] By setting up a cutting structure, a rotating sheet cutter is used to remove samples from crops and allow the samples to fall into a sampling tube and come into contact with a buffer. During this process, the contact between hands and crops is reduced, and the sheet cutter is prevented from cutting multiple crops, which helps to reduce the cross-pollination of pesticide residues on multiple crops and minimizes the impact on the accuracy of crop pesticide sampling and testing results.

[0016] The sample that enters the sampling tube falls on the filter cartridge, and the sample cannot pass through the filter cartridge, thus avoiding as much as possible that the relatively small sample enters the needle tube and blocks the needle tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This utility model is used to show the overall structural diagram of the device;

[0018] Figure 2 This utility model is used to show the cross-sectional diagram of the cutting structure;

[0019] Figure 3 Practical Figure 2 Enlarged view of point A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. Sampling tube; 101. Needle tube; 102. Protective cover;

[0022] 2. Cutting structure; 201. Fixed cylinder; 202. Spring; 203. Movable cylinder; 204. Rotating tube; 205. Circular plate; 206. Hexagonal block; 207. Annular mounting plate; 208. Bolt; 209. Annular fixing plate; 210. Sheet cutter;

[0023] 3. Sealing ring; 4. Annular groove; 5. Annular plate; 6. Filter cartridge; 7. Air bag. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0025] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0026] In the description of this application, the term "for example" is used to mean "used as an example, illustration or explanation". Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. In order to enable any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0027] Reference Figure 1-3A device for sampling pesticide residues in crops includes a sampling tube 1, a cutting structure 2 is provided on the sampling tube 1, the cutting structure 2 includes a fixed cylinder 201 installed on the outside of one end of the sampling tube 1, a spring 202 is installed in the fixed cylinder 201, one end of the spring 202 is installed with a movable cylinder 203 movably inserted into the fixed cylinder 201, the interior of the movable cylinder 203 is rotatably connected to a rotating tube 204, the interior of the rotating tube 204 is movably connected to a hexagonal block 206, the hexagonal block 206 can be pulled out of the rotating tube 204, a circular plate 205 is installed on one side of the hexagonal block 206, and an annular mounting plate 207 is installed on the circular plate 205 A sheet cutter 210 is installed on the annular mounting plate 207. The elastic force of the spring 202 is used to prevent the sheet cutter 210 from contacting one end of the sampling tube 1, which facilitates the rotation of the sheet cutter 210. At this time, the sheet cutter 210 is rotated to cut part of the crop, so that the obtained crop sample falls into the sampling tube 1 and mixes with the buffer in the sampling tube 1. In this process, the contact between the hand and the crop is reduced, and the sheet cutter 210 is avoided from cutting multiple crops, which helps to reduce the cross-pesticide residues on multiple crops and minimize the impact on the accuracy of the results of crop pesticide sampling and detection.

[0028] Reference Figure 3 A bolt 208 is installed on the annular mounting plate 207, and an annular fixing plate 209 is installed on the fixing cylinder 201. The annular mounting plate 207 is connected to the annular fixing plate 209 by the bolt 208. After the crop sampling is completed, the annular mounting plate 207 is fixed to the annular fixing plate 209 by the bolt 208 to cover one end of the sampling tube 1.

[0029] A sealing ring 3 is provided at one end of the sampling tube 1. The sealing ring 3 is located between the sampling tube 1 and the sheet cutter 210. The sealing ring 3 is used to seal the gap between the sheet cutter 210 and the sampling tube 1 to prevent liquid leakage as much as possible.

[0030] Reference Figure 1 One end of the sampling tube 1 is connected to a needle tube 101 , on which a protective cover 102 is provided. The needle tube 101 is used to discharge the buffer after the reaction for subsequent detection.

[0031] The sheet cutter 210 is provided with an air blowing bag 7, the output end of which faces the interior of the sampling tube 1. Repeated squeezing of the air blowing bag 7 causes air to be squeezed into the sampling tube 1, thereby increasing the air pressure in the sampling tube 1 and facilitating the discharge of the buffer.

[0032] Reference Figure 2 and Figure 3An annular groove 4 is provided at one end of the sampling tube 1, a filter cartridge 6 is inserted into the interior of the sampling tube 1, and an annular strap 5 is installed on the outside of one end of the filter cartridge 6. The annular strap 5 is placed in the sampling tube 1 through the annular groove 4. The sample entering the sampling tube 1 falls on the filter cartridge 6. At this time, the sample can come into contact with the buffer, but cannot pass through the filter cartridge 6, thereby avoiding relatively small samples, such as the residue separated from broccoli, from entering the needle tube 101 and clogging the needle tube 101.

[0033] Working principle:

[0034] The pesticide residue sampling device for crops utilizes the elastic force of the spring 202 to prevent the flaky cutter 210 from contacting one end of the sampling tube 1, thereby facilitating the rotation of the flaky cutter 210. At this time, the flaky cutter 210 is rotated to cut a portion of the crop, so that the obtained crop sample falls into the sampling tube 1 and mixes with the buffer in the sampling tube 1. During this process, contact between the hand and the crop is reduced, and the flaky cutter 210 is prevented from cutting multiple crops, which helps to reduce the cross-talk of pesticide residues on multiple crops and minimizes the impact on the accuracy of the results of crop pesticide sampling and testing.

[0035] In the pesticide residue sampling device for crops, the sample entering the sampling tube 1 falls on the filter cartridge 6. At this time, the sample can come into contact with the buffer, but cannot pass through the filter cartridge 6, thereby preventing the relatively small sample from entering the needle tube 101 and clogging the needle tube 101.

[0036] Although the preferred embodiment of the present invention has been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present invention.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A sampling device for pesticide residues in crops, comprising a sampling tube (1), characterized in that: The sampling tube (1) is provided with a cutting structure (2); The cutting structure (2) comprises a fixed cylinder (201) installed on the outside of one end of the sampling tube (1), a spring (202) installed in the fixed cylinder (201), a movable cylinder (203) movably inserted into the interior of the fixed cylinder (201) installed at one end of the spring (202), a rotating tube (204) rotatably connected to the interior of the movable cylinder (203), a hexagonal block (206) movably engaged with the interior of the rotating tube (204), a circular plate (205) installed on one side of the hexagonal block (206), an annular mounting plate (207) installed on the circular plate (205), and a sheet-shaped cutter (210) installed on the annular mounting plate (207).

2. The pesticide residue sampling device in crops according to claim 1, characterized in that: One end of the sampling tube (1) is connected to a needle tube (101), and a protective sleeve (102) is provided on the needle tube (101).

3. The pesticide residue sampling device in crops according to claim 1, characterized in that: Bolts (208) are installed on the annular mounting plate (207), an annular fixing plate (209) is installed on the fixing cylinder (201), and the annular mounting plate (207) is connected to the annular fixing plate (209) via bolts (208).

4. The pesticide residue sampling device in crops according to claim 1, characterized in that: A sealing ring (3) is provided at one end of the sampling tube (1), and the sealing ring (3) is located between the sampling tube (1) and the sheet cutter (210).

5. The pesticide residue sampling device in crops according to claim 1, characterized in that: The sheet cutter (210) is provided with an air blowing bag (7), and the output end of the air blowing bag (7) faces the interior of the sampling tube (1).

6. The pesticide residue sampling device in crops according to claim 1, characterized in that: An annular groove (4) is provided at one end of the sampling tube (1), a filter cartridge (6) is inserted into the interior of the sampling tube (1), an annular strap (5) is installed on the outside of one end of the filter cartridge (6), and the annular strap (5) is placed in the sampling tube (1) through the annular groove (4).

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