Picking and training device for picking and training small and medium-sized soil animals

Abstract

The utility model provides a picking training device for picking training small and medium-sized soil animals, which comprises a holding rod and a picking training structure connected to the first end of the holding rod, the picking training structure comprises a fixing rod and a picking training ring, one end of the fixing rod is connected with the first end of the holding rod, and the other end of the fixing rod is connected with the picking training ring. And the other end of the fixing rod is connected with the picking and exercising ring. According to the soil animal picking and training device, the contact area of the picking and training structure and the soil animal can be increased to reduce the difficulty of picking and training the soil animal, meanwhile, the attaching stability of the picking and training structure and the soil animal in the picking and training process is effectively improved, the soil animal is prevented from falling off, time and labor are saved, meanwhile, the requirement for the operation proficiency of experimenters is reduced, and the working efficiency is improved. And due to the in-ring through hole, the mixing of the stationary liquid and the soil animal in the picking and training process can be reduced, and the adverse effect of the stationary liquid on the subsequent operation of the soil animal under the microscope is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of soil zoology auxiliary tool design technology, specifically relating to a sorting device for sorting small and medium-sized soil animals. Background Technology

[0002] Small and medium-sized soil animals, including soil nematodes, mites, and springtails, interact to form a complex soil food web, playing a vital role in global change and litter decomposition. Therefore, research on the diversity and community composition of small and medium-sized soil animals is of great significance for assessing soil ecological functions and predicting global climate change.

[0003] Small and medium-sized soil animals are usually counted and identified using a microscope. When preparing specimens or conducting research using isotope methods, the rapid and accurate picking of these soil animals is a crucial step (i.e., the picking process). Current techniques often use picking needles or pipettes to pick soil animals, but these methods have significant limitations. For example, picking needles are often small, limiting their contact area with the soil animals. This results in unstable support for the soil animals during the picking process, causing them to easily fall off the needle and requiring repeated operations. This also demands a high level of skill from the experimenter. On the other hand, using pipettes can lead to the simultaneous aspiration of fixative, which is detrimental to the observation of the soil animals and can easily result in the aspiration of multiple soil animals at once. Utility Model Content

[0004] Therefore, this utility model provides a picker for picking small and medium-sized soil animals, which can overcome the technical problems of using a needle to pick soil animals, which makes the soil animals easy to fall off and requires repeated picking operations, which is time-consuming and laborious, and requires a high level of skill from the experimenter; and using a pipette to pick soil animals, which makes it easy to draw the fixative liquid and may result in the drawing of multiple soil animals at one time, affecting subsequent experimental observation.

[0005] To address the aforementioned problems, this utility model provides a picker for picking small and medium-sized soil animals, comprising a gripping rod and a picking structure connected to a first end of the gripping rod. The picking structure includes a fixing rod and a picking ring, with one end of the fixing rod connected to the first end of the gripping rod and the other end of the fixing rod connected to the picking ring.

[0006] In some embodiments, a filter screen is provided at the through hole inside the sorting ring, and the outer edge of the filter screen is connected to the inner wall of the through hole of the sorting ring.

[0007] In some embodiments, the diameter of the through-hole of the sorting ring is 2mm to 3mm; and / or, the diameter of the filter screen pores is 20μm to 37μm.

[0008] In some embodiments, the thickness of the filter screen is 0.05 mm to 0.1 mm, and the axial thickness of the sorting ring is 0.1 mm to 0.2 mm.

[0009] In some embodiments, the fixing rod and the gripping rod are detachably connected.

[0010] In some embodiments, the fixing rod includes a threaded connecting rod segment threadedly connected to a first threaded hole on the first end face of the gripping rod, and an annular connecting rod segment connected to one end of the threaded connecting rod segment, wherein the annular connecting rod segment and the threaded connecting rod segment form an included angle A, 120°≤A≤150°; and / or, the diameter of the annular connecting rod segment is 0.5mm~2mm, and the length of the annular connecting rod segment is 1cm~1.5cm.

[0011] In some embodiments, the grip bar has a thumb positioning protrusion on its shaft.

[0012] In some embodiments, the thumb positioning protrusion is detachably connected to the grip bar.

[0013] In some embodiments, the grip bar has a plurality of second threaded holes along its axial direction, and the thumb positioning protrusion is threadedly connected to any one of the second threaded holes.

[0014] In some embodiments, a lifting ring is provided on the second end face of the gripping rod.

[0015] The sorting device for sorting small and medium-sized soil animals provided by this utility model has the following beneficial effects:

[0016] The picking structure used for picking soil animals includes a picking ring, which has a ring-shaped structure. This increases the contact area between the picking structure and the soil animals, thereby reducing the difficulty of picking the soil animals. At the same time, it effectively improves the adhesion stability between the picking structure and the soil animals during the picking process, preventing the soil animals from falling off. It saves time and effort and reduces the requirements for the operator's skill level. Furthermore, because it has through holes in the ring, it can reduce the mixing of fixative (such as formaldehyde, alcohol, etc.) with the soil animals during the picking process, preventing the fixative from adversely affecting subsequent operations (such as identification) of soil animals under the microscope. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the sorting device for sorting small and medium-sized soil animals in an embodiment of this utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of the grip lever structure;

[0020] Figure 3 yes Figure 1 A schematic diagram of the structure of the pick-and-place ring in a specific embodiment.

[0021] The attached figures are labeled as follows:

[0022] 1. Grip bar; 11. Second threaded hole; 12. First threaded hole; 21. Fixing rod; 211. Threaded connecting rod segment; 212. Ring connecting rod segment; 22. Picking ring; 23. Filter screen; 3. Thumb positioning protrusion; 4. Hanging ring. 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0025] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0026] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0027] See Figures 1 to 3 As shown in the figure, according to an embodiment of the present invention, a sorting device for sorting small and medium-sized soil animals is provided. The aforementioned small and medium-sized soil animals include, for example, medium-sized soil nematodes and small mites and springtails. The sorting device includes a holding rod 1 and a sorting structure (not indicated in the figure) connected to the first end of the holding rod 1. The sorting structure includes a fixing rod 21 and a sorting ring 22. One end of the fixing rod 21 is connected to the first end of the holding rod 1, and the other end of the fixing rod 21 is connected to the sorting ring 22. It is understood that the aforementioned sorting ring 22 is a ring-shaped structure with an inner through hole, and the sorting ring 22 can be square, circular, or elliptical. The specific shape can be reasonably rotated according to the needs. In the embodiment of the present invention, it is circular.

[0028] In this technical solution, the picking structure for picking soil animals includes a picking ring 22, which has a ring-shaped structure. This can increase the contact area between the picking structure and the soil animals, thereby reducing the difficulty of picking the soil animals. At the same time, it can effectively improve the adhesion stability between the picking structure and the soil animals during the picking process, prevent the soil animals from falling off, save time and effort, and reduce the requirements for the operator's skill level. Moreover, because it has through holes in the ring, it can reduce the mixing of fixative liquid (such as formaldehyde, alcohol, etc.) with the soil animals during the picking process, and prevent the fixative liquid from having an adverse effect on subsequent operations (such as identification) of soil animals under the microscope.

[0029] In some embodiments, a filter screen 23 is provided at the through hole inside the picking ring 22, and the outer edge of the filter screen 23 is connected to the inner wall of the through hole of the picking ring 22.

[0030] In this technical solution, by further setting a filter screen 23 at the through hole inside the sorting ring 22, it is possible to prevent the fixative from mixing with the soil animals and affecting subsequent observation, while also further ensuring the reliability of the soil animals' position during the sorting process and further reducing the difficulty of the sorting operation.

[0031] To ensure reliable and convenient sorting of small and medium-sized soil animals, in some embodiments, the filter mesh 23 has a pore diameter of 20 μm to 37 μm; in a preferred embodiment, the sorting ring 22 has a through-hole diameter of 2 mm to 3 mm to prevent the sorting ring 22 from being too large and causing multiple soil animals to be sorted at once, while also preventing the large volume from causing significant disturbance to the fixative in the culture dish, thus reducing the difficulty of sorting.

[0032] In some embodiments, the thickness of the filter screen 23 is 0.05 mm to 0.1 mm, and the axial thickness of the picking ring 22 is 0.1 mm to 0.2 mm. That is, the axial thickness of the picking ring 22 should not be less than the thickness of the filter screen 23 to ensure a reliable connection between the picking ring 22 and the filter screen 23. At the same time, the axial thickness of the picking ring 22 is limited to the aforementioned range. On the one hand, this can prevent excessive thickness from obstructing the observation field under the microscope. On the other hand, it can prevent insufficient thickness from effectively surrounding the soil animals in the fixative in the target area of ​​the culture dish, which would lead to uncertain positions of the soil animals under operational disturbance and increase the difficulty of picking.

[0033] In one optional embodiment, the filter screen 23 is formed by weaving iron wire or steel wire, and the thickness of the filter screen 23 is also the diameter of the iron wire or steel wire. Alternatively, as another preferred implementation, the filter screen 23 is formed by laser perforation.

[0034] In some embodiments, the fixing rod 21 and the gripping rod 1 are detachably connected. In this way, designing the fixing rod 21 and the gripping rod 1 to be detachable can facilitate the maintenance and replacement of the aforementioned lifting structure, and also make it easier to store the two separately, reducing the space occupied in the stored state.

[0035] Specifically, the fixing rod 21 includes a threaded connecting rod segment 211 that is threadedly connected to a first threaded hole 12 on the first end face of the holding rod 1, and an annular connecting rod segment 212 connected to one end of the threaded connecting rod segment 211. The annular connecting rod segment 212 and the threaded connecting rod segment 211 form an included angle A, 120°≤A≤150°. This allows the experimenter to easily pick the food like holding a pen, improving the comfort of the experimenter. In addition, the threaded connection between the fixing rod 21 and the holding rod 1 allows for the use of different petri dish depths by adjusting the thread fit length, thus improving the applicability of the picker.

[0036] The diameter of the ring connecting rod segment 212 is 0.5mm to 2mm, and the length of the ring connecting rod segment 212 is 1cm to 1.5cm. In this technical solution, the diameter of the ring connecting rod segment 212 is designed to be small in order to prevent the picking ring 22 from occupying too much volume after being placed in the fixative of the culture dish, which would cause excessive disturbance to the fixative and thus cause the soil animals to move too far, making the picking process difficult.

[0037] To further improve the operator's comfort, the grip rod 1 has a thumb positioning protrusion 3 on its shaft. Specifically, the thumb positioning protrusion 3 can be a structure with a small flat surface that can contact the side of the thumb, such as a rectangular block. The thumb positioning protrusion 3 is detachably connected to the grip rod 1. In a specific embodiment, the aforementioned thumb positioning protrusion 3 can be a rectangular block with a width of 1cm to 1.5cm.

[0038] Specifically, the gripping rod 1 has multiple second threaded holes 11 along its axial direction. The thumb positioning protrusion 3 is threadedly connected to any one of the second threaded holes 11. The experimenter can adjust and select which one to connect to based on their preference or subjective feeling. Figure 1 As shown, three second threaded holes 11 (upper, middle, and lower) are provided along the axial direction of the grip rod 1. The three second threaded holes 11 are located within the range of 4cm to 10cm in axial length.

[0039] In some embodiments, a hanging ring 4 is provided on the second end face of the gripping rod 1, which can be attached to the second end face of the gripping rod 1. In this way, the picker can be suspended by the hanging ring 4 on a hook near the microscope area during the intervals when the picker needs to be used frequently, which is convenient for frequent use by the experimenter and prevents damage caused by improper placement and storage of the picker.

[0040] In one specific embodiment, the aforementioned grip rod 1 has a circular cross-section with a diameter of 0.5cm to 0.7cm and a height of 12cm to 16cm.

[0041] In use, the experimenter holds the handle 1 and places the picking device on the small to medium-sized soil animal to be picked. The target soil animal is gently floated in the fixative. Then, the soil animal is gently lifted by the picking device. After standing for a few seconds to allow the fixative attached to the soil animal to be filtered out through the filter screen, it is placed on a pre-prepared small to medium-sized soil animal slide.

[0042] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A sorting device for sorting small and medium-sized soil animals, characterized in that, The device includes a gripping rod (1) and a lifting structure connected to the first end of the gripping rod (1). The lifting structure includes a fixed rod (21) and a lifting ring (22). One end of the fixed rod (21) is connected to the first end of the gripping rod (1), and the other end of the fixed rod (21) is connected to the lifting ring (22).

2. The sorting device according to claim 1, characterized in that, A filter screen (23) is provided at the through hole inside the picking ring (22), and the outer edge of the filter screen (23) is connected to the inner wall of the through hole of the picking ring (22).

3. The sorting device according to claim 2, characterized in that, The diameter of the through hole of the sorting ring (22) is 2mm to 3mm; and / or the diameter of the filter hole of the filter screen (23) is 20μm to 37μm.

4. The sorting device according to claim 3, characterized in that, The thickness of the filter screen (23) is 0.05mm to 0.1mm, and the axial thickness of the sorting ring (22) is 0.1mm to 0.2mm.

5. The sorting device according to claim 1, characterized in that, The fixing rod (21) is detachably connected to the gripping rod (1).

6. The sorting device according to claim 5, characterized in that, The fixing rod (21) includes a threaded connecting rod segment (211) threadedly connected to a first threaded hole (12) on the first end face of the gripping rod (1) and an annular connecting rod segment (212) connected to one end of the threaded connecting rod segment (211). An angle A is formed between the annular connecting rod segment (212) and the threaded connecting rod segment (211), where 120°≤A≤150°; and / or, the diameter of the annular connecting rod segment (212) is 0.5mm~2mm, and the length of the annular connecting rod segment (212) is 1cm~1.5cm.

7. The sorting device according to claim 1, characterized in that, The grip (1) has a thumb positioning protrusion (3) on its shaft.

8. The sorting device according to claim 7, characterized in that, The thumb positioning protrusion (3) is detachably connected to the grip rod (1).

9. The sorting device according to claim 8, characterized in that, The gripping rod (1) has a plurality of second threaded holes (11) arranged along its axial direction, and the thumb positioning protrusion (3) is threadedly connected to any one of the second threaded holes (11).

10. The sorting device according to claim 1, characterized in that, A hanging ring (4) is provided on the second end face of the gripping rod (1).

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