Appliance for sample separation and variety identification of zooplankton

Abstract

The utility model relates to the technical field of experimental instruments, in particular to a zooplankton sample separation and species identification instrument which comprises a dish box, a dish cover and a cross-shaped inserting plate, the dish cover is detachably connected with the dish box and located on the upper surface of the dish box, the dish box is of a structure with an opening in the upper side and a hollow inside, and the dish cover is of a structure with an opening in the lower side and a hollow inside. The utensil is only composed of the utensil cover, the utensil box and the cross-shaped inserting plate, the three parts can be freely assembled, when the utensil is used, a sample is shaken up and directly poured into the utensil box, the cross-shaped inserting plate is added, when the density of the zooplankton sample is high, one fourth or one half of the zooplankton sample is taken for sample separation and identification, and therefore the density of the zooplankton sample is high. The steps of two-time sample separation, washing and the like through a sample separator are not needed, so that the preparatory work during zooplankter identification in a laboratory can be reduced, the procedure is simplified, meanwhile, washing and recycling are convenient after sample identification is completed, and the overall working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and in particular to an apparatus for separating and identifying zooplankton. Background Technology

[0002] Zooplankton are important secondary producers connecting primary producers and consumers in marine ecosystems. Understanding the current status of zooplankton community structure is crucial for studying the function and health of marine ecosystems. Traditional zooplankton identification and counting equipment is mostly designed as counting frames with spiral grooves or containers with multiple rows of equally spaced grids. The counting frames can hold relatively small sample volumes, mostly 5 ml or 10 ml. When there are many samples, it is necessary to repeat the operation in batches to identify a single sample, which takes a long time.

[0003] Prior art CN212284073U discloses a container for identifying and counting zooplankton species. This container consists of three parts: a container box, a lid, and a flow stopper. The bottom of the container box has multiple equally spaced parallel bars. One end of each bar is fixed to the inner wall of the container box, while the other end is separated from the inner wall to form a connecting channel. This connecting channel is equipped with a flow stopper. The connecting channels of adjacent bars are staggered to form a meandering, interconnected animal planktonic channel. The lid can be placed on top of the container box, and the part of the lid that contacts the container box... It is equipped with a corrosion-resistant sealing ring; the stopper consists of two parts: a stopper body and a stopper handle. The height of the stopper body is the same as the height of the fence, and its length matches the connecting channel to block the animal's floating channel. The stopper handle is fixed above the stopper body. The overall height of the stopper is slightly lower than the internal height of the dish. This dish can solve the problems of small sample capacity and inconvenience of full sample analysis in traditional counting plates. Moreover, it can effectively avoid confusion between analyzed and unanalyzed individuals, and will not cause health problems such as formaldehyde solution harming the health of analysts when the experiment is paused.

[0004] However, when using the aforementioned containers, the numerous grates at the bottom of the containers can affect and increase the difficulty of recovering samples after identification, reducing rinsing efficiency. In addition, since the amount of zooplankton collected at each station is often large, whether in nearshore or offshore areas, it is often necessary to divide the samples into half or a quarter, which requires the use of a sample divider for initial sample division, making the experimental steps cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide an instrument for zooplankton sampling and species identification. It aims to solve the technical problems of existing instruments, which have too many bars at the bottom of the container, making it difficult to retrieve samples after identification and reducing rinsing efficiency. In addition, when the amount of zooplankton collected at each station is large, whether in nearshore or offshore areas, it is often necessary to divide the samples into half or a quarter, which requires the use of a sample divider first, making the experimental steps cumbersome.

[0006] To achieve the above objectives, this utility model provides an apparatus for zooplankton sampling and species identification, comprising a dish box, a dish lid, and a cross-shaped insert. The dish lid is detachably connected to the dish box and is located on the upper surface of the dish box. The dish box has an opening on the top and a hollow interior, while the dish lid has an opening on the bottom and a hollow interior. The outer diameter of the dish box is 9 cm, and the outer diameter of the dish lid is 10 cm. The cross-shaped insert is detachably connected to the dish box and is located inside the dish box.

[0007] The lid of the dish is provided with a sealing gasket, which is interference-fitted with the dish box to seal the gap between the dish box and the dish lid.

[0008] The cross-shaped insert plate includes a horizontal insert plate and a vertical insert plate. The vertical insert plate is detachably connected to the horizontal insert plate and is located on the horizontal insert plate.

[0009] The lid of the dish is provided with a handle. By holding the handle and lifting it, the lid of the dish can be separated from the dish box.

[0010] The dish box has a protrusion, and the dish lid has a groove. The protrusion is embedded into the groove to fix the dish lid on the dish box.

[0011] This invention relates to an apparatus for zooplankton sampling and species identification. The apparatus consists only of a dish lid, a dish box, and a cross-shaped insert, and these three parts are separable and can be freely assembled. In use, the sample is shaken well and poured directly into the dish box, then the cross-shaped insert is added. When the zooplankton sample density is low, all samples can be identified; when the density is high, one-quarter or one-half of the sample is taken for segmentation and identification. This eliminates the need for two sampling and rinsing steps using a separate sampler, thus reducing preparation work in the laboratory for zooplankton identification and simplifying the procedure. Furthermore, a single operation can separate the zooplankton from the sample. The completion of zooplankton species statistics reduces zooplankton loss during multiple operations and improves identification accuracy. In addition, the sample identification process facilitates rinsing and recovery, improving overall work efficiency. It also solves the problem that existing containers with too many bars at the bottom of the container can affect and increase the difficulty of sample recovery after identification, reducing rinsing efficiency. Furthermore, since the amount of zooplankton collected at each station is often large, whether in nearshore or offshore areas, it is often necessary to divide the sample into half or a quarter, which requires the use of a sample divider and makes the experimental procedures cumbersome. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model.

[0014] Figure 2 This is a cross-sectional schematic diagram along the handle of the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model.

[0015] Figure 3 This is the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model. Figure 2 Enlarged view of point A.

[0016] Figure 4 This is a schematic diagram showing the connection between the horizontal and vertical inserts of the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model.

[0017] Figure 5 This is an exploded view of the transverse and longitudinal inserts of the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model.

[0018] In the diagram: 101-Dish box, 102-Dish lid, 103-Horizontal insert plate, 104-Vertical insert plate, 105-Sealing gasket, 106-First slot, 107-Second slot, 108-Lid handle, 109-Protrusion, 110-Groove. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] First Embodiment

[0021] Please see Figures 1-5 , Figure 1 This is a schematic diagram of the overall structure of the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model. Figure 2 This is a cross-sectional schematic diagram along the handle 108 of the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model. Figure 3 This is the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model. Figure 2 Enlarged view of point A, Figure 4 This is a schematic diagram showing the connection between the transverse insert 103 and the longitudinal insert 104 of the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model. Figure 5 This is an exploded view of the transverse insert 103 and the longitudinal insert 104 of the apparatus for zooplankton sampling and species identification according to the first embodiment of this utility model.

[0022] This utility model provides an apparatus for zooplankton sampling and species identification, comprising a dish box 101, a dish lid 102, and a cross-shaped insert, wherein the cross-shaped insert includes a horizontal insert 103 and a vertical insert 104. This solution addresses the problems of the aforementioned apparatus, where the numerous grilles at the bottom of the dish box 101 hinder sample recovery after identification, reducing rinsing efficiency. Furthermore, it addresses the cumbersome experimental procedures often required by the need for pre-sampling with a sampler when collecting large quantities of zooplankton at each station, whether in nearshore or offshore areas. Therefore, this solution can be applied to scenarios involving zooplankton sampling and species identification using such an apparatus.

[0023] In this embodiment, the apparatus consists only of a dish lid 102, a dish box 101, and a cross-shaped insert, and these three parts are separable and can be freely assembled. In use, the sample is shaken well and poured directly into the dish box 101, followed by the cross-shaped insert. When the zooplankton sample density is low, all samples can be identified; when the density is high, one-quarter or one-half of the sample is taken for fractionation and identification. This eliminates the need for two fractionation and rinsing steps using a fractionator, thus reducing preparation work for zooplankton identification in the laboratory and simplifying the procedure. Furthermore, a single operation can identify all zooplankton in the sample. After the statistical analysis is completed, the loss of zooplankton during multiple operations is reduced, and the accuracy of identification is improved. In addition, the sample is easy to wash and recover after identification, which improves the overall work efficiency. It solves the problem that when using the existing equipment, the bottom of the container 101 has too many bars, which affects and increases the difficulty of recovering the sample after identification and reduces the washing efficiency. In addition, since the amount of zooplankton collected at each station is large, whether in nearshore or offshore areas, it is often necessary to divide the sample into half or a quarter, which requires the use of a sample divider to divide the sample first, making the experimental procedure cumbersome.

[0024] The dish lid 102 is detachably connected to the dish box 101 and is located on the upper surface of the dish box 101. The dish box 101 has an opening on the upper side and a hollow interior. The dish lid 102 has an opening on the lower side and a hollow interior. The outer diameter of the dish box 101 is 9 cm, and the outer diameter of the dish lid 102 is 10 cm. The cross-shaped insert is detachably connected to the dish box 101 and is located inside the dish box 101.

[0025] Secondly, a sealing gasket 105 is provided inside the lid 102. The sealing gasket 105 is interference-fitted with the container 101 to seal the gap between the container 101 and the lid 102.

[0026] Furthermore, the longitudinal insert plate 104 is detachably connected to the transverse insert plate 103 and is located on the transverse insert plate 103. The transverse insert plate 103 has a first slot 106, and the longitudinal insert plate 104 has a second slot 107. The first slot 106 and the second slot 107 are staggered. By inserting the second slot 107 into the first slot 106, the longitudinal insert plate 104 can be installed on the transverse insert plate 103, so that the transverse insert plate 103 and the longitudinal insert plate 104 can together form the cross insert plate.

[0027] In addition, the lid 102 is provided with a handle 108. By holding the handle 108 and lifting it, the lid 102 can be separated from the container 101.

[0028] Finally, the container 101 has a protrusion 109 and the lid 102 has a groove 110. The protrusion 109 is embedded into the groove 110 to limit and fix the lid 102 on the container 101.

[0029] When using this invention, after shaking the zooplankton sample from a certain station evenly, it is poured into the dish 101. Then, the second slot 107 is inserted into the first slot 106, so that the longitudinal insert 104 can be installed on the transverse insert 103, thereby forming the cross insert with the transverse insert 103 and the longitudinal insert 104. The cross insert is then placed into the dish 101, so that the cross insert can divide the sample in the dish 101 into four equal parts. Then, the amount of zooplankton sample selected is determined according to the density of zooplankton in the sample, which is one-quarter, one-half, or all (when the density of zooplankton sample is low, all can be identified; when the density is high, one-quarter or one-half is taken for sample identification). There is no need to perform two sample separation and rinsing steps using a sample divider, thereby reducing the preparation work for zooplankton identification in the laboratory and simplifying the procedure.

[0030] When the experiment is paused, the dish cap 102 is placed on the dish box 101, so that the protrusion 109 of the dish box 101 is embedded in the groove 110 of the dish cap 102. This allows the dish cap 102 to be fixed on the dish box 101, thereby sealing the internal space of the dish box 101 and slowing down the evaporation of the fixative liquid inside the dish box 101. At this time, the sealing gasket 105 can seal the gap between the dish box 101 and the dish cap 102 to prevent the fixative liquid inside the dish box 101 from evaporating from the gap between the dish box 101 and the dish cap 102.

[0031] After the zooplankton sample identification is completed, the protrusion 109 of the dish 101 is removed from the groove 110 of the dish lid 102, thereby releasing the limiting and fixing state of the dish lid 102 on the dish 101. Then, the dish lid 102 is removed from the dish 101, thereby opening the internal space of the dish 101. The cross-shaped insert is then removed from the dish 101, and the zooplankton sample is returned to the sample bottle, completing the entire experimental process for the zooplankton sample.

[0032] In summary, this apparatus allows for full analysis or direct fractionation of high-density zooplankton samples, reducing the steps involved in fractionation and saving analysis time. Furthermore, it avoids confusion between identified and unidentified individuals, facilitates dissection during identification, and makes sample rinsing and recovery easier after identification. Covering the apparatus during experimental pauses prevents rapid evaporation of the fixative, addressing the limitations of traditional zooplankton counting and identification devices that have limited sample capacity and require time-consuming batch operations. Additionally, when dealing with large quantities of medium to large zooplankton samples from nearshore or offshore areas, often requiring the extraction of one-quarter or one-half of the sample, this application addresses both direct fractionation and the avoidance of confusion between analyzed and unanalyzed individuals. The detachable insert further facilitates sample rinsing and recovery, thereby improving the simplicity, applicability, and efficiency of zooplankton identification and statistical analysis.

[0033] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A zooplankton sample separating and species identifying device, characterized in that it comprises a dish box, a dish cover and a cross-shaped insert plate, the dish cover is detachably connected with the dish box and located on the upper surface of the dish box, the dish box is an open-top hollow structure, the dish cover is an open-bottom hollow structure, the outer diameter of the dish box is 9 cm, the outer diameter of the dish cover is 10 cm, and the cross-shaped insert plate is detachably connected with the dish box and located in the dish box.

2. The zooplankton sample separating and species identifying device according to claim 1, characterized in that a sealing gasket is arranged in the dish cover, the sealing gasket is in interference fit with the dish box to seal the gap between the dish cover and the dish box.

3. The zooplankton sample separating and species identifying device according to claim 1, characterized in that the cross-shaped insert plate comprises a horizontal insert plate and a vertical insert plate, the vertical insert plate is detachably connected with the horizontal insert plate and located on the horizontal insert plate.

4. The zooplankton sample separating and species identifying device according to claim 1, characterized in that a cover handle is arranged on the dish cover, the dish cover is separated from the dish box by holding and lifting the cover handle.

5. The zooplankton sample separating and species identifying device according to claim 1, characterized in that the dish box has a protrusion and the dish cover has a groove, the protrusion is embedded in the groove to limit and fix the dish cover on the dish box. ​ ​ ​ ​ ​

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