Plant disease leaf sampling tool

Abstract

The utility model relates to the technical field of plant tissue sampling, and discloses a plant diseased leaf sampling tool which comprises a mounting cylinder and a sampling mechanism arranged on the mounting cylinder, the sampling mechanism comprises an inserting rod, two adapter rods and two sampling discs, the inserting rod is movably inserted in the mounting cylinder, the upper end of the inserting rod extends out of an upper cylinder opening of the mounting cylinder, and the two adapter rods are connected with the two sampling discs. Two through holes are formed in the lower part of the insertion rod, the two adapter rods are arranged in the two through holes in a penetrating manner, the middle parts of the two adapter rods are fixedly connected with the inner walls of the through holes, the two sampling discs are rotationally mounted on the two adapter rods respectively, torsional springs are arranged between the sampling discs and the adapter rods, and a plurality of barbs are arranged at the lower ends of the two sampling discs. A pressing block is fixedly mounted at the upper end of the inserting rod, and a containing groove is formed in the upper end of the mounting cylinder. The objective of the utility model is to solve the problem that at present, when sampling work is carried out, diseased plant tissues are removed through tweezers and scissors, and then the diseased plant tissues are cut into required sizes, so that tissue samples are easy to fall off due to misoperation.

Description

Technical Field

[0001] This utility model belongs to the field of plant tissue sampling technology, specifically relating to a tool for sampling leaves of plant diseases. Background Technology

[0002] The pathogen causing sclerotinia stem rot in rapeseed is *Sclerotinias clerotiorum*, belonging to the phylum Ascomycota and genus *Sclerotinias*. This pathogen primarily affects the stems, leaves, flowers, pods, and seeds of rapeseed, leading to a significant decrease in yield and quality. Rapeseed sclerotinia stem rot is widespread globally, particularly severe in the middle and lower reaches of the Yangtze River and the southeastern coastal areas of China, where the incidence rate is generally 10-30%, but can reach over 80% in severe cases. Besides rapeseed, *Sclerotinias clerotiorum* can also infect other crops such as lettuce, sunflower, carrot, soybean, broad bean, and pea. Plant tissue sampling is necessary before detecting the pathogen in rapeseed sclerotinia stem rot.

[0003] Currently, when sampling, diseased plant tissue is removed using tweezers and scissors and then cut into the required size. However, this process is prone to errors, leading to sample loss. Therefore, we have proposed a new tool for sampling diseased plant leaves to address these issues. Utility Model Content

[0004] The purpose of this invention is to solve the problem that when sampling is carried out, diseased plant tissue is removed with tweezers and scissors and then cut into the required size, which can easily lead to the loss of tissue samples due to operational errors.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A plant disease leaf sampling tool includes an installation cylinder and a sampling mechanism mounted on the installation cylinder. The sampling mechanism includes an insertion rod, two adapter rods, and two sampling discs. The insertion rod is movably inserted into the installation cylinder, with its upper end extending out of the upper opening of the installation cylinder. Two through-holes are formed at the lower part of the insertion rod, and the two adapter rods pass through these through-holes, with their middle portions fixedly connected to the inner walls of the through-holes. The two sampling discs are rotatably mounted on the two adapter rods, respectively. A torsion spring is provided between the sampling discs and the adapter rods. Several barbs are provided at the lower ends of both sampling discs. A pressing block is fixedly mounted on the upper end of the insertion rod. A receiving groove is formed at the upper end of the installation cylinder, and a compression spring is fixedly mounted on the insertion rod between the pressing block and the groove wall. A guide groove is provided at the lower end of the installation cylinder to receive the two sampling discs and guide them to open and close.

[0007] Furthermore, an elastic bellows is fixedly installed between the pressing block and the mounting cylinder, and an air delivery groove is provided at the lower end of the insertion rod, while a through hole communicating with the air delivery groove is provided at the upper part of the insertion rod. This structural design allows the elastic bellows to form an air storage space with the pressing block and the mounting cylinder, enabling air to be drawn in or expelled in conjunction with the through hole and the air delivery groove.

[0008] Furthermore, both sampling trays are semi-circular, and the lower edge of the sampling trays is serrated. This structural design allows the plant tissue to be cut through by the serrations, facilitating subsequent sampling.

[0009] Furthermore, several rubber protrusions are fixedly installed on the wall of the mounting cylinder. This structural design increases the friction between the hand and the mounting cylinder through the rubber protrusions, thus improving grip comfort.

[0010] Furthermore, when the two sampling discs are unfolded to a horizontal position, the lower end of the insertion rod protrudes beyond the lower ends of the two sampling discs. This structural design allows the insertion rod to contact the plant tissue before the lower end of the sampling discs, so that the plant tissue can be easily grasped when suction is generated at the air delivery channel.

[0011] Furthermore, the area of ​​the upper opening of the guide groove is smaller than the area of ​​the lower opening, and the groove wall near the two sampling disks is arc-shaped. This structural design is simple and easy to use.

[0012] The utility model adopting the above technical solution has the following advantages:

[0013] This invention uses a rod to move two sampling discs up and down inside the mounting cylinder. When the lower ends of the two unfolded sampling discs are close to the diseased area of ​​the plant, the compression spring will drive the two sampling discs to rotate. Under the guidance of the guide groove, the plant tissue sample is clamped to prevent it from falling off. It is simple to operate and more convenient to use. Attached Figure Description

[0014] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0015] Figure 1 This is a schematic diagram of the structure of a leaf sampling tool for plant diseases according to this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of a leaf sampling tool for plant diseases according to this utility model.

[0017] Figure 3 This is a cross-sectional view of the sampling mechanism in a plant disease leaf sampling tool of this utility model.

[0018] Figure 4This is a schematic diagram of the insertion rod and sampling disc in a plant disease leaf sampling tool of this utility model.

[0019] The symbols for the main components are explained below:

[0020] 1. Mounting cylinder; 11. Receiving groove; 12. Guide groove;

[0021] 2. Sampling mechanism;

[0022] 21. Insert rod; 211. Gas delivery channel; 212. Through hole;

[0023] 22. Adapter rod; 23. Sampling tray;

[0024] 3. Pressing block; 31. Compression spring;

[0025] 4. Elastic corrugated pipe; 5. Rubber convex strip. Detailed Implementation

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0027] like Figures 1-4As shown, this utility model discloses a plant disease leaf sampling tool, comprising an installation cylinder 1 and a sampling mechanism 2 mounted on the installation cylinder 1. Several rubber protrusions 5 are fixedly installed on the wall of the installation cylinder 1. The sampling mechanism 2 includes an insertion rod 21, two adapter rods 22, and two sampling discs 23. The insertion rod 21 is movably inserted into the installation cylinder 1, with its upper end extending out of the upper opening of the installation cylinder 1. Two through-holes are formed at the lower part of the insertion rod 21, and the two adapter rods 22 pass through these two through-holes, with their middle portions fixedly connected to the inner walls of the through-holes. The two sampling discs 23 are rotatably mounted on the two adapter rods 22 respectively. The sampling discs 23 are connected to the adapter rods... A torsion spring is provided between the two sampling discs 22. Several barbs are provided at the lower ends of the two sampling discs 23. A pressing block 3 is fixedly installed at the upper end of the insertion rod 21. A receiving groove 11 is opened at the upper end of the mounting cylinder 1. A compression spring 31 is fixedly installed between the pressing block 3 and the groove wall of the receiving groove 11 on the insertion rod 21. A guide groove 12 is provided at the lower end of the mounting cylinder 1 to receive the two sampling discs 23 and guide the two sampling discs 23 to complete the opening and closing. The area of ​​the upper groove opening of the guide groove 12 is smaller than the area of ​​the lower groove opening, and the groove wall near the two sampling discs 23 is arc-shaped. When the insertion rod 21 drives the two sampling discs 23 to move up and down, the guide groove 12 will assist the two sampling discs 23 to complete the opening or closing.

[0028] An elastic corrugated tube 4 is fixedly installed between the pressing block 3 and the mounting cylinder 1. The lower end of the insertion rod 21 is provided with an air delivery groove 211, and the upper part of the insertion rod 21 is provided with a through hole 212 that communicates with the air delivery groove 211. The elastic corrugated tube 4, the pressing block 3, and the mounting cylinder 1 can enclose and form an air storage space. When the pressing block 3 is close to the upper end of the mounting cylinder 1, the air in the air storage space can be output to the outside through the through hole 212 and the air delivery groove 211 to form an airflow that can blow away the plant tissue sample. When the pressing block 3 close to the upper end of the mounting cylinder 1 is released, the space in the air storage space increases rapidly and the pressure decreases, which can adsorb the plant tissue to the lower end of the air delivery groove 211, making it convenient to sample the plant tissue.

[0029] Both sampling discs 23 are semi-circular and symmetrically arranged at the lower end of the insertion rod 21. The lower edge of the sampling disc 23 is serrated, and the lower end of the insertion rod 21 has a groove in the vertical direction to ensure that the two sampling discs 23 can rotate smoothly. When the two sampling discs 23 are unfolded to a horizontal state under the action of the torsion spring, the upper end of the sampling disc 23 abuts against the groove wall of the insertion rod 21, and the lower end of the insertion rod 21 protrudes from the lower end of the two sampling discs 23.

[0030] The method of using this utility model is as follows:

[0031] During use, the sampling personnel hold the plant leaf with one hand and grasp the installation tube 1 with the other hand, pressing the pressing block 3 with their fingers. The pressing block 3 drives the insertion rod 21 and the two sampling discs 23 to move downwards and extend out of the installation tube 1. The two sampling discs 23 are subjected to the force of the torsion spring and gradually unfold under the guidance of the guide groove 12 until the two sampling discs 23 are in a horizontal state. The force applied to the pressing block 3 is maintained, and the installation tube 1 is controlled to make the end of the sampling disc 23 close to the plant leaf. The serrations on the lower edge of the sampling disc 23 will cut off the diseased part of the plant leaf at a set size, so that the plant tissue sample is separated from the plant body.

[0032] When the sampling disc 23 is close to the plant leaf, the barbs at the lower end of the sampling disc 23 pierce the plant leaf. At this time, the force applied to the pressing block 3 is quickly released. The pressing block 3 rebounds rapidly under the elastic force of the compression spring 31. The two sampling discs 23 are quickly retracted into the mounting cylinder 1 through the insertion rod 21. The two sampling discs 23 rotate in opposite directions under the guidance of the guide groove 12, clamping the plant leaf at its lower end, which can prevent the plant tissue sample from accidentally falling out.

[0033] When the pressing block 3 rebounds, the air storage space between the elastic bellows 4, the pressing block 3, and the mounting cylinder 1 increases rapidly. The internal pressure is less than the external pressure, and the plant leaves at the opening of the air delivery groove 211 will be tightly adsorbed under the action of pressure, which further improves the grasping effect of the sampling tool on plant tissue samples.

[0034] When it is necessary to remove the plant tissue sample, squeeze the pressing block 3 again. The two sampling discs 23 can be pushed out through the insertion rod 21. At this time, the elastic bellows 4 contracts, and the air in the gas storage space is output outward through the through hole 212 and the gas delivery groove 211. This will exert a force on the plant tissue leaves and carry them away from the sampling discs 23 for subsequent testing.

[0035] The above provides a detailed description of a leaf sampling tool for plant diseases provided by this utility model. The specific embodiments are described only to help understand the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A plant disease leaf sampling tool comprising a mounting cylinder (1) and a sampling mechanism (2) provided on the mounting cylinder (1), characterized in that: The sampling mechanism (2) comprises an insertion rod (21), two adapter rods (22) and two sampling discs (23), the insertion rod (21) is movably inserted into the installation cylinder (1), the upper end of the insertion rod (21) extends out of the upper cylinder opening of the installation cylinder (1), the lower part of the insertion rod (21) is provided with two through holes, the two adapter rods (22) are arranged in the two through holes, and the middle parts of the two adapter rods (22) are fixedly connected with the inner walls of the through holes, the two sampling discs (23) are rotatably arranged on the two adapter rods (22), torsion springs are arranged between the sampling discs (23) and the adapter rods (22), the lower ends of the two sampling discs (23) are provided with a plurality of barbs, the upper end of the insertion rod (21) is fixedly provided with a pressing block (3), the upper end of the installation cylinder (1) is provided with a containing groove (11), the insertion rod (21) is fixedly provided with a compression spring (31) between the pressing block (3) and the groove wall of the containing groove (11), and the lower end of the installation cylinder (1) is provided with a guide groove (12) for containing and guiding the two sampling discs (23) to open and close.

2. The plant disease leaf sampling tool of claim 1, wherein: The pressing block (3) and the installation cylinder (1) are fixedly provided with an elastic bellows (4), the lower end of the insertion rod (21) is provided with a gas conveying groove (211), and the upper part of the insertion rod (21) is provided with a through hole (212) in communication with the gas conveying groove (211).

3. The plant disease leaf sampling tool of claim 1, wherein: The two sampling discs (23) are both semicircular, and the lower end edges of the sampling discs (23) are provided with sawteeth.

4. The plant disease leaf sampling tool of claim 1, wherein: The cylinder wall of the installation cylinder (1) is fixedly provided with a plurality of rubber convex strips (5).

5. The plant disease leaf sampling tool of claim 1, wherein: When the two sampling discs (23) are unfolded to a horizontal state, the lower end of the insertion rod (21) protrudes from the lower ends of the two sampling discs (23).

6. The plant disease leaf sampling tool of claim 1, wherein: The upper groove opening of the guide groove (12) is smaller than the lower groove opening, and the groove wall close to the two sampling discs (23) is arc-shaped.

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