Portable plant parasitic nematode counting device

Abstract

The utility model discloses a portable counting device for plant parasitic nematodes, which comprises a top plate, a support plate and a base which are mutually hinged in pairs, so that a foldable structure is formed among the top plate, the support plate and the base; the top plate can be stored in the supporting plate by rotating the top plate; furthermore, the supporting plate can be stored in the base by rotating the supporting plate. And finally, the whole device is folded into a base size state. The top plate is further provided with a magnifying lens and an LED lamp strip, and a culture dish is arranged in the base. By reversely rotating the top plate, the supporting plate and the unfolding device, the magnifying lens directly faces the culture dish in the base in the unfolding state, and counting of nematodes in the culture dish is achieved. The device effectively reduces the overall size, and is convenient to carry and high in counting accuracy.

Description

Technical Field

[0001] The utility model belongs to the field of experimental instruments, in particular to a portable counting device for plant parasitic nematodes. Background Art

[0002] Plant parasitic nematodes are one of the important pathogens of plant infectious diseases. There are many types of plant parasitic nematodes and their damage range is wide. Common plant parasitic nematodes include root knot nematodes, cyst nematodes, wheat grain nematodes, sweet potato stem nematodes, etc. Plant parasitic nematode counts are an important basis for assessing the degree of damage caused by plant parasitic nematodes and are also a necessary means for quantitative molecular biology research on plant parasitic nematodes.

[0003] At present, the method for counting plant parasitic nematodes usually involves placing the separated nematode suspension in a culture dish and counting it under a stereoscope. However, due to the small field of view of the stereoscope objective, the culture dish needs to be moved when counting. During the movement, the position of the plant parasitic nematodes in the culture dish will change, resulting in counting errors. Utility Model Content

[0004] In view of the above problems, the utility model combines a magnifying glass with a culture dish to design a portable counting device for plant parasitic nematodes, which is practical and easy to carry and can effectively ensure the accuracy of counting.

[0005] The utility model of a portable plant parasitic nematode counting device comprises a foldable structure consisting of a top plate, a support plate and a base. The top plate is stored in the support plate, and the rear side of the top plate is hinged to the front side of the support plate; the support plate is stored in the base, and the rear side of the support plate is hinged to the rear side of the base. The top plate can be stored in the groove on the side of the support plate by rotating the top plate counterclockwise; the support plate can be stored in the groove on the top surface of the base by further rotating the support plate clockwise.

[0006] A magnifying glass and an LED light strip are also installed on the top plate; a culture dish is embedded in the base; in the unfolded state, the support plate contacts and limits the rear side of the base, forming an obtuse angle with the surface of the base; the top plate contacts and limits the front side of the support plate, being parallel to the surface of the base; and the magnifying glass faces the culture dish to realize the counting of nematodes in the culture dish.

[0007] The advantages of the utility model are:

[0008] 1. The portable counting device for plant parasitic nematodes of the utility model has a folding structure design, which effectively reduces the overall volume of the device when not in use, making it easy to carry.

[0009] 2. The portable counting device for plant parasitic nematodes of the utility model is designed with a magnifying glass. When the magnifying glass is unfolded, it faces the culture dish, and the nematodes in the culture dish can be clearly observed to ensure the counting accuracy.

[0010] 3. The portable counting device for plant parasitic nematodes of the utility model is designed with an LED light strip to improve the brightness during the observation process, so that the nematodes in the culture dish can be observed more clearly and the counting accuracy can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the overall structure of a portable counting device for plant parasitic nematodes.

[0012] Figure 2 The utility model is a schematic diagram of the top plate structure of the portable counting device for plant parasitic nematodes.

[0013] Figure 3 The present invention is a schematic diagram of the supporting plate structure of the portable counting device for plant parasitic nematodes.

[0014] Figure 4 The utility model is a schematic diagram of the base structure of the portable counting device for plant parasitic nematodes.

[0015] Figure 5 The utility model is a schematic diagram of the structure of a culture dish in the portable counting device for plant parasitic nematodes.

[0016] In the figure:

[0017] 1- Top plate 2- Support plate 3- Base

[0018] 4- Magnifying glass 5- LED light strip 6- Petri dish

[0019] 7- inclined groove 8- rubber pad 101- top plate lug

[0020] 201-support plate lug 202-support plate groove 301-base groove

[0021] 302-Step hole DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] The portable counting device for plant parasitic nematodes of the utility model is a foldable structure composed of a top plate 1, a support plate 2 and a base 3. A magnifying glass 4 and an LED light strip 5 are installed on the top plate 1. A culture dish 6 is arranged in the base 3. Figure 1 shown.

[0024] like Figure 2As shown, the top plate 1 is a plate-like structure with a rectangular cross section. The rear side is a connecting side. Top plate lugs 101 are designed at both ends of the rear side. The outer walls of the two top plate lugs 101 are flush with the left and right sides of the top plate 1. A through hole is opened at the front position in the middle of the top plate 1, and a fixed magnifying glass 4 is embedded in the through hole. At the same time, an annular groove is opened in the circumferential direction of the lower surface of the top plate 1, and an annular LED light strip 5 is installed in the groove.

[0025] like Figure 3 As shown, the support plate 2 has a bottom surface and left and right side surfaces, and the cross section is U-shaped, so that a support plate groove 202 is formed on the outer side of the support plate 2. The top ends of the left and right side surfaces of the support plate 2 are designed to extend outward to form support plate lugs 201.

[0026] The top plate lugs 101 at both ends of the rear side surface of the top plate 1 of the above structure are respectively located on the inner sides of the support plate lugs 201 extending from the top ends on both sides of the support plate 2, and are connected by a rotating shaft to form a rotating pair, so that the top plate 1 and the support plate 2 can rotate; and when the top plate 1 rotates counterclockwise to the extreme position in the direction of the support plate groove 202, the top plate 1 is embedded and fixed in the support plate groove 202; at this time, the top surface of the top plate 1 and the bottom surface of the support plate groove 202 are fitted and limited, and the top surface of the top plate 1 is flush with the top surface of the support plate groove 202, thereby storing the top plate 1 in the support plate 2.

[0027] The base 3 is a rectangular structure, with a rectangular base groove 301 on the top surface; a stepped hole 302 is designed on the bottom surface of the base groove 301; the stepped hole 302 is connected to the bottom surface of the base 3; and the stepped hole 302 is close to the back side of the base 3. Anti-skid rubber pads 8 are fixed at the four corners of the bottom surface of the base 4 to ensure that the base 4 is firmly placed on the test bench.

[0028] The bottom end of the aforementioned support plate 2 is placed in the base groove 301, and the support plate groove 202 is arranged toward the base groove 301; the two side surfaces of the bottom end of the support plate 2 are connected to the left and right side surfaces of the groove 301 through a rotating shaft to form a rotating pair, and the rotating shaft connection position is close to the rear end of the base groove 301. In this way, the support plate 2 and the base 3 can rotate; and when the support plate 2 rotates clockwise toward the base groove 301 to the extreme position, the support plate 2 can be embedded and fixed in the base groove 303; at this time, the outer side surface of the support plate 2 is flush with the top surface of the base 3, thereby storing the support plate 2 in the base 3.

[0029] Through the folding and storage design between the top plate 1, the support plate 2 and the base 3, the counting device of the utility model is finally folded into a storage state with only the size of the base 3, which is convenient for carrying out.

[0030] The stepped hole 302 designed on the above-mentioned base 3 is used to place the culture dish 6. The culture dish 6 is designed as a disc structure, and the outer diameter matches the aperture of the stepped hole; at the same time, the top edge of the circumferential outer wall of the culture dish 6 is designed with an annular shoulder 601; the annular shoulder 601 is used to overlap and cooperate with the stepped part of the stepped hole 302 to position the culture dish 6 after the culture dish 6 is placed in the stepped hole 302. At this time, the bottom surface of the culture dish 6 is flush with the bottom surface of the base 3; at the same time, the top surface of the annular shoulder 601 on the top of the culture dish 6 is flush with the bottom surface of the base groove 301, so that the installation of the culture dish 6 does not hinder the storage of the support plate 2. Through the detachable design of the above-mentioned culture dish 6, the culture dish 6 can be taken out separately for cleaning after the counting is completed. When the counting device of the above-mentioned structure is in the storage state, the culture dish 6 is also stored in the stepped hole 302, and the top plate 1 after storage is limited. In the storage state, there is a certain friction between the support plate 2 and the top plate 1 and between the support plate 2 and the base 3, so that the counting device in the overall storage state is not easy to automatically unfold. When the counting device needs to be unfolded, the top plate 1 can be buckled out of the support plate groove 202 through the inclined groove 7 designed at the front edge of the bottom of the top plate 1 and inclined toward the front end of the top plate 1. Further pulling the top plate 1 can pull the support plate 2 out of the base groove 301. Then the top plate 2 rotates clockwise and the support plate 2 rotates counterclockwise to unfold the counting device. When the support plate 3 rotates to the point where its outer side wall contacts the top edge of the rear side wall of the base 3, the support plate 3 cannot continue to rotate counterclockwise. At this time, the support plate 3 is fully unfolded and forms an obtuse angle with the top surface of the base 3; when the top plate 1 rotates to the point where its bottom surface contacts the top edge of the support plate 2, the top plate 1 is fully unfolded and parallel to the top surface of the base 3, and at this time, the magnifying glass 4 on the top plate 1 is facing the culture dish in the base 3. Then, by putting nematodes into the culture dish 6 and turning on the LED light strip 5, the nematodes can be observed and counted through the magnifying glass 4.

[0031] The magnifying glass in the utility model can magnify 20 times, has a focal length of 10cm, and a lens diameter of 80mm; the bottom diameter of the culture dish 6 is 56mm and the height is 13mm. At the same time, in order to facilitate the continuity of nematode counting, the culture dish 6 is designed to be made of transparent materials, such as high silica glass; the bottom surface of the culture dish 6 is divided into multiple areas by horizontal and vertical lines, and numbers are marked in order in each area of ​​the bottom surface, such as the sorting method of a telephone dial panel. As a result, when counting nematodes in the culture dish 6, the number of nematodes in each area is counted in the order of the marked numbers, preventing the counting personnel from leaving due to something, interrupting the nematode counting, and returning to continue counting, resulting in counting errors.

Claims

1. A portable device for counting plant parasitic nematodes, characterized in that: A foldable structure comprising a top plate, a support plate and a base; wherein the top plate is stored in the support plate, and the rear side of the top plate is hinged to the front side of the support plate; the support plate is stored in the base, and the rear side of the support plate is hinged to the rear side of the base; A magnifying glass and an LED light strip are also installed on the top plate; a culture dish is embedded in the base; In the unfolded state, the support plate is in contact with the rear side of the base and forms an obtuse angle with the surface of the base; the top plate is in contact with the front side of the support plate and is parallel to the surface of the base; and the magnifying glass faces the culture dish.

2. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: The structure and specific connection method of the top plate support plate and the base are as follows: The rear side surface of the top plate is the connecting side, and top plate lugs are designed at both ends of the rear side surface; the support plate has a bottom surface and left and right side surfaces, and the cross-section is U-shaped, so that a support plate groove is formed on the outside of the support plate; the top ends of the left and right side surfaces of the support plate are designed to extend outward to form support plate lugs; the top plate lugs at both ends of the rear side surface of the top plate are respectively located on the inner sides of the support plate lugs extending from the top ends on both sides of the support plate, and are connected by a rotating shaft to form a rotating pair; when the top plate is rotated counterclockwise in the direction of the support plate groove to the extreme position, the top plate is embedded and fixed in the support plate groove; at this time, the top surface of the top plate is in contact with the bottom surface of the support plate groove, and the top surface of the top plate is flush with the top surface of the support plate groove; A base groove is provided on the top surface of the base; the bottom end of the support plate is placed in the base groove, and the support plate groove is arranged toward the base groove; the two side surfaces of the bottom end of the support plate are connected to the left and right side surfaces of the groove through a rotating shaft to form a rotating pair, and the connection position of the rotating shaft is close to the rear end of the base groove; when the support plate is rotated clockwise toward the base groove to the extreme position, the support plate can be embedded and fixed in the base groove; at this time, the outer side surface of the support plate is flush with the top surface of the base.

3. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: A stepped hole is designed on the bottom surface of the base groove, and the stepped hole is communicated with the bottom surface of the base; a culture dish is arranged in the stepped hole; the outer diameter of the culture dish matches the aperture of the stepped hole; at the same time, an annular shoulder is designed on the top edge of the circumferential outer wall of the culture dish; the annular shoulder overlaps with the stepped part of the stepped hole to position the culture dish.

4. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: Anti-skid rubber pads are fixed at the four corners of the bottom surface of the base.

5. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: The magnifying glass is embedded and fixed in a through hole opened on the top plate.

6. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: The LED light strip is fixed along the axial direction of the magnifying glass.

7. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: The bottom surface of the culture dish is flush with the bottom surface of the base; at the same time, the top surface of the annular shoulder on the top of the culture dish is flush with the bottom surface of the groove of the base.

8. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: The magnifying glass can magnify 20 times, has a focal length of 10 cm, and a lens diameter of 80 mm; the bottom diameter of the culture dish is 56 mm and the height is 13 mm.

9. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: The bottom surface of the culture dish is divided into multiple areas by horizontal and vertical lines, and numbers are marked in sequence in each area of ​​the bottom surface.

10. A portable plant parasitic nematode counting device as claimed in claim 1, characterized in that: The top plate is designed with an inclined groove.

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