CN113951215B - Plankton net for collecting isotope samples of planktons in stages - Google Patents

Abstract

The invention relates to the field of plankton investigation and evaluation, in particular to a plankton net for collecting plankton isotope samples in stages. A plankton collecting component is provided, and the other end of the filter screen is fixedly connected with a mutually dismounting component; the side of the mutually dismounting component away from the plankton collecting component is provided with a removable fixing component. In the sampling process of the invention, the classification of plankton of different individual sizes is realized, and there is no need to bring them back to the laboratory for secondary treatment, which saves manpower and minimizes the processing time of the samples.

Description

A plankton net for hierarchical collection of plankton isotopic samples

technical field

The invention relates to the field of plankton investigation and evaluation, in particular to a plankton net for collecting plankton isotope samples in stages.

Background technique

The traditional method of collecting plankton isotope samples is mainly to collect plankton by using No. 25 (64 μm) or No. 13 (112 μm) plankton nets respectively, and then bring them back to the laboratory for classification, that is, use different nets. Objective The plankton net separates the collected plankton, which are finally used for isotope determination. Such a method is simple to operate and is often used in the collection of plankton isotopic samples. However, this sampling method requires multiple filtrations, which consumes more time and manpower. It is likely that the samples will deteriorate due to untimely processing, and multiple filtrations are likely to cause some plankton loss, resulting in an unsatisfactory biomass of the collected plankton. experimental requirements.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a plankton net for collecting plankton isotope samples in stages, so as to solve the above problems, realize the classification of plankton of different individual sizes during the sampling process, and do not need to bring them back to the laboratory for secondary processing , save manpower and minimize the processing time of samples, ensure the quality of samples, collect more plankton in the same time, and through the combination of different mesh conical nylon screens, more sampling needs can be met.

For achieving the above object, the present invention provides the following scheme:

A plankton net for collecting plankton isotope samples by grading, including several groups of filter nets, the filter net groups include filter nets, a plurality of the filter nets are set in sequence, and one end of the filter net is provided with plankton collection an assembly, the other end of the filter screen is fixedly connected with a mutual disassembly assembly; the side of the mutual disassembly assembly away from the plankton collecting assembly is provided with a detachable fixing assembly;

The mutually dismantling assembly includes a first support ring fixedly connected to the other end of the filter screen, one side of the first support ring is fixedly connected with a lower sealing waterproof zipper, and the other side of the first support ring is fixedly connected with an upper The sealed waterproof zipper has the same structure as the lower sealed waterproof zipper and the upper sealed waterproof zipper. One of the lower sealed waterproof zipper and the upper sealed waterproof zipper is fitted with a zipper, and the detachable fixing assembly is far away from the first support ring. One side of the plankton collecting assembly is fixedly connected.

Preferably, the detachable fixing assembly includes a plurality of detachable steel rings fixedly connected to the first support ring, the detachable steel rings are detachably connected with one end of a steel cable, and the other ends of the plurality of steel cables are detachably connected. The fixed connection has a pull ring.

Preferably, the detachable steel ring includes a second arc-shaped ring sleeved on the first support ring, one end of the second arc-shaped ring is rotatably connected to one end of the first arc-shaped ring through a rotating shaft, and the first arc-shaped ring is rotatably connected to one end of the first arc-shaped ring. The other end of an arc-shaped ring is matched with the second arc-shaped ring through steps, a torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively connected with the first arc-shaped ring and the second arc-shaped ring. Contact Settings.

Preferably, one end of the filter screen away from the first support ring is connected with a plankton collector, and one end of the plankton collector away from the filter screen is connected with a valve.

Preferably, the number of the filter meshes is N, N≥2, and the N layers of the filter meshes are set in sequence.

Preferably, the number of the filter screen is 3, and the three layers of the filter screen are set in sequence.

The present invention has the following technical effects:

When in use, set the filter to a filter with different mesh sizes. The sampler holds the device or ties it with a rope to the pull ring, places the entire device horizontally in the water, and moves against the current with the sampling boat to collect plankton. Pull the device out of the water surface, disassemble the filter, open each filter accordingly, and transfer the plankton in each filter to the corresponding container to complete the collection of plankton isotope samples of different sizes and levels.

In the present invention, by setting the detachably connected first support ring, different combinations of filter nets can be set, which can be combined arbitrarily when collecting target plankton, so that the use function is more perfect.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor.

Fig. 1 is the structural representation of filter net group of the present invention;

2 is a schematic structural diagram of Embodiment 1 of the present invention;

3 is a schematic structural diagram of a mesh plankton net in Embodiment 1 of the present invention;

4 is a schematic diagram of the structure of a small mesh plankton net according to an embodiment of the present invention;

Fig. 5 is the structural schematic diagram of the detachable steel ring of the present invention;

6 is a schematic structural diagram of Embodiment 2 of the present invention;

FIG. 7 is a schematic structural diagram of a hooking assembly according to Embodiment 4 of the present invention;

FIG. 8 is a schematic structural diagram of a state-1 structure of a hooking assembly according to Embodiment 4;

FIG. 9 is a schematic structural diagram of a state 2 of the hook assembly in the fourth embodiment.

Among them, 1. large-mesh plankton net; 2. medium-mesh plankton net; 3. small-mesh plankton net; 4. first support circle; 5. second support circle; 6, third support circle; 7. The lower sealing waterproof zipper; 8. The upper sealing waterproof zipper; 9. The zipper; 10. The first plankton collector; 11, the first valve; 12, the second plankton collector; 13, the second valve; 14, The third plankton collector; 15, the third valve; 16, the steel cable; 17, the pull ring; 18, the detachable steel ring; 1801, the first arc ring; 1802, the rotating shaft; 1803, the second arc ring; 19. Mounting block; 1901, the first limit pin; 1902, the first give way slot; 1903, the second give way slot; 1904, the second limit pin; 20, the first movable block; 2001, the first arc Slot; 2002, inclined plane; 21, second movable block; 2101, second arc slot; 2102, hinge shaft.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Example 1:

Referring to Figures 1-5, this embodiment provides a plankton net for collecting plankton isotope samples in stages, including several sets of filter meshes, and the filter mesh set includes a One end is provided with a plankton collection component, and the other end of the filter screen is fixedly connected with a mutually dismountable component; the side of the mutually dismountable component away from the plankton collection component is provided with a detachable fixed component;

The mutual disassembly assembly includes a first support ring 4 fixedly connected to the other end of the filter screen, one side of the first support ring 4 is fixedly connected with a lower sealed waterproof zipper 7, and the other side of the first support ring 4 is fixedly connected with an upper sealed waterproof zipper 8 The lower sealing waterproof zipper 7 and the upper sealing waterproof zipper 8 have the same structure. One of the lower sealing waterproof zipper 7 and the upper sealing waterproof zipper 8 is equipped with a zipper 9. Side fixed connection.

To further optimize the solution, the detachable fixing assembly includes a number of detachable steel rings 18 that are fixedly connected to the first support ring 4, the detachable steel rings 18 are detachably connected to one end of the steel cable 16, and the other ends of the plurality of steel cables 16 are fixedly connected. With pull tab 17.

To further optimize the solution, the detachable steel ring 18 includes a second arc-shaped ring 1803 sleeved on the first support ring 4, and one end of the second arc-shaped ring 1803 is rotatably connected to one end of the first arc-shaped ring 1801 through the rotating shaft 1802. The other end of the arc-shaped ring 1801 and the second arc-shaped ring 1803 cooperate with each other through steps, and a torsion spring is sleeved on the rotating shaft 1802 .

In a further optimized solution, one end of the filter screen away from the first support ring 4 is connected with a plankton collector, and one end of the plankton collector away from the filter screen is connected with a valve.

To further optimize the plan, the number of filters is 3, and the 3 layers of filters are set in sequence. The filter screen includes a large-mesh plankton net 1, a medium-mesh plankton net 2 set on the outside of the large-mesh plankton net 1, a small-mesh plankton net 3 set on the outside of the medium-mesh plankton net 2, and a large-mesh plankton net 3. The left side of the mesh plankton net 1 is fixedly connected with a first support ring 4, the left side of the medium mesh plankton net 2 is fixedly connected with a second support ring 5, and the left side of the small mesh plankton net 3 is fixedly connected with a third support Ring 6, the second support ring 5, the third support ring 6 and the first support ring 4 have the same specifications, and the lower sealing waterproof zipper 7, the upper sealing waterproof zipper 8 are fixedly connected on both sides, the first support ring 4, the second support ring The ring 5 and the third support ring 6 are detachably connected through the lower sealing waterproof zipper 7 and the upper sealing waterproof zipper 8. The plankton collector includes a first plankton collector 10, a second plankton collector 12, and a third plankton collector. 14, the first plankton collector 10 communicates with the right side of the large-mesh plankton net 1, the second plankton collector 12 communicates with the right side of the medium-mesh plankton net 2, and the third plankton collector 14 communicates with the small plankton net 1. The mesh plankton net 3 is connected to the right side. The valves include a first valve 11, a second valve 13, and a third valve 15. The right side of the first plankton collector 10 is communicated with the first valve 11, the right side of the second plankton collector 12 is communicated with the second valve 13, and the first The right side of the three plankton collectors 14 is communicated with the third valve 15 .

When in use, the sampler should hold the device or tie it with a rope to the pull ring 17, place the entire device horizontally in the water, and move against the current with the sampling boat to collect plankton. 1. Split plankton net 2 with medium mesh and plankton net 3 with small mesh, open the first plankton collector 10, the second plankton collector 12, and the third plankton collector 14 accordingly, and connect the large net Plankton in mesh plankton net 1, medium mesh plankton net 2, and small mesh plankton net 3 were transferred to corresponding containers respectively to complete the collection of plankton isotope samples of different sizes and levels.

Through the large mesh plankton net 1, the medium mesh plankton net 2, and the small mesh plankton net 3, plankton of various sizes such as protozoa, rotifers, cladocerans, copepods and phytoplankton can be collected in the water body. Bioisotopic samples can more comprehensively obtain the isotopic composition of plankton in the surveyed waters.

Embodiment 2:

Referring to FIG. 6 , the difference between the plankton net of this embodiment and the first embodiment is only that the number of filter nets is 2, only the first support ring 4 and the second support ring 5 are provided, and the third support ring 6 is provided. and its connected components are removed.

Embodiment three:

The plankton net of this embodiment differs from the first embodiment only in that the number of filters is 4, and the right side of the third support ring 6 is detachably connected to a fourth support ring through the lower sealing waterproof zipper 7 and the upper sealing waterproof zipper 8 The right side of the fourth support ring is fixedly connected with a fine mesh plankton net, the right side of the fine mesh plankton net is connected with a fourth plankton collector, and the right side of the fourth plankton collector is connected with a fourth valve.

In the present invention, by setting the first support ring 4 which is detachably connected, different combinations of filter nets can be arranged, which can be combined arbitrarily when collecting the target plankton, so that the use function is more perfect.

Embodiment 4:

Referring to FIGS. 7-9 , the plankton net of this embodiment differs from the first embodiment only in that one end of the wire rope 16 is fixedly connected with a hooking component, and the other end of the wire rope 16 is fixedly connected with the pull ring 17 , and the hooking component is fixedly connected. Including the mounting block 19, the middle of the mounting block 19 is provided with a first giving way slot 1902, one end of the mounting block 19 is provided with a second giving way slot 1903, the front and rear side walls of the first giving way slot 1902 are fixedly connected with a first limiting pin 1901, A second limiting pin 1904 is fixedly connected to the front and rear side walls of the second escaping slot 1903 , a first movable block 20 is movably arranged in the first escrow slot 1902 , and one end of the first movable block 20 away from the first escrow slot 1902 is provided There is a slope 2002, the top of the first movable block 20 is provided with a first arc-shaped groove 2001, the first arc-shaped groove 2001 is matched with the first abdication groove 1902, and an end of the first movable block 20 close to the second abdication groove 1903 rotates A second movable block 21 is connected, the second movable block 21 is movably arranged in the second abdication groove 1903, and a second arc-shaped groove 2101 is opened on the top of the second movable block 21 near the first movable block 20. The arc-shaped groove 2101 is matched with the second limit pin 1904. The bottom of the second movable block 21 close to the first movable block 20 is fixedly connected with a hinge shaft 2102. The first movable block 20 is connected to the second movable block through the hinge shaft 2102. 21 is rotationally connected, and the second movable block 21 is fixedly connected with one end of the wire rope 16; the first movable block 20 does not extend into the top surface of the first vacant slot 1902 and the bottom surface of the mounting block 19 is reserved with an interval, the distance of the interval The outer side of the hinge shaft 2102 is sleeved with a coil spring which is larger than the outline of the section of the detachable steel ring 18 , and both ends of the coil spring are fixedly connected to the first movable block 20 and the second movable block 21 respectively.

The high end of the inclined surface 2002 is close to the second movable block 21, and the low end of the inclined surface 2002 is far away from the second movable block 21;

The center of the first arc-shaped groove 2001 and the center of the second arc-shaped groove 2101 coincide with the center of the hinge shaft 2102 respectively.

The inner diameter of the pull ring 17 is larger than the height of the first movable block 20 and the second movable block 21. When the steel cable 16 and the pull ring 17 need to be fixed, the first movable block 20 and the second movable block 21 should be installed downward. After the block 19 moves beyond the pull ring 17, the inclined surface 2002 contacts the pull ring 17, and then moves to the right as shown in Figures 7-8. At this time, the first movable block 20 rotates along the hinge shaft 2102 and is in contact with the installation block 19. There is a gap between the two, and the pull ring 17 enters between the first movable block 20 and the second movable block 21. Under the action of the coil spring, the first movable block 20 returns to its initial state. The second movable block 21 on the right side as shown rotates along the hinge shaft 2102, and the pull ring 17 moves to the left side of the installation block 19. At this time, the wire 16 penetrates into the pull ring 17, and the first The second movable block 21 is restored to the initial state, and then the mounting block 19 is moved continuously so that the first movable block 20 and the mounting block 19 can be clamped on the detachable steel ring 18 to complete the connection between the steel cable 16 and the detachable steel ring 18 and the pull ring 17 fixed.

By setting the hooking assembly, the fixing of the steel cable 16 and the plankton net is convenient, and the use of the whole device is more convenient.

In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or It is implied that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The above-mentioned embodiments are only to describe the preferred modes of the present invention, but not to limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various modifications to the technical solutions of the present invention. Variations and improvements should fall within the protection scope determined by the claims of the present invention.

Claims (4)

1. a plankton net for collecting plankton isotope samples by grading, it is characterized in that: comprise several groups of filter screen groups, and described filter screen groups comprise filter nets, and several described filter nets are set successively, and described filter nets. One end is provided with a plankton collecting assembly, and the other end of the filter screen is fixedly connected with a mutual disassembly assembly; the side of the mutual disassembly assembly away from the plankton collecting assembly is provided with a detachable fixing assembly; The mutual disassembly assembly includes a first support ring (4) fixedly connected to the other end of the filter screen, and a lower sealing waterproof zipper (7) is fixedly connected to one side of the first support ring (4). An upper sealing waterproof zipper (8) is fixedly connected to the other side of the support ring (4). The lower sealing waterproof zipper (7) and the upper sealing waterproof zipper (8) have the same structure. One of the sealed waterproof zippers (8) is fitted with a zipper (9), and the detachable fixing component is fixedly connected to the side of the first support ring (4) away from the plankton collecting component; the detachable fixing component It comprises a plurality of detachable steel rings (18) fixedly connected to the first support ring (4), the detachable steel rings (18) are detachably connected to one end of a steel cable (16), and a plurality of the steel cables ( The other end of 16) is fixedly connected with a pull ring (17); the detachable steel ring (18) includes a second arc-shaped ring (1803) sleeved on the first support ring (4), the first One end of the second arc-shaped ring (1803) is rotatably connected to one end of the first arc-shaped ring (1801) through the rotating shaft (1802), and the other end of the first arc-shaped ring (1801) and the second arc-shaped ring (1803) pass through a step In cooperation with each other, a torsion spring is sleeved on the rotating shaft (1802), and the two ends of the torsion spring are respectively arranged in contact with the first arc-shaped ring (1801) and the second arc-shaped ring (1803); One end of the wire rope (16) is fixedly connected with a hooking assembly, the other end of the wire rope (16) is fixedly connected with the pull ring (17), and the hooking assembly includes a mounting block (19). The middle of the block (19) is provided with a first abdication slot (1902), and one end of the mounting block (19) is provided with a second abdication slot (1903), the front and rear side walls of the first abdication slot (1902) are fixedly connected There is a first limit pin (1901), a second limit pin (1904) is fixedly connected to the front and rear side walls of the second abdication groove (1903), and a second limit pin (1904) is movably arranged in the first abduction groove (1902). A movable block (20), the end of the first movable block (20) away from the first escape groove (1902) is provided with a slope (2002), and the top of the first movable block (20) is provided with a first Arc-shaped groove (2001), the first arc-shaped groove (2001) is matched with the first escape groove (1902), and the first movable block (20) is close to the second escape groove (1903) ) is rotatably connected to one end of a second movable block (21), the second movable block (21) is movably arranged in the second abdication groove (1903), and the second movable block (21) is close to the The top of one side of the first movable block (20) is provided with a second arc-shaped groove (2101), the second arc-shaped groove (2101) is matched with the second limit pin (1904), and the second arc-shaped groove (2101) is matched with the second limit pin (1904). A hinge shaft (2102) is fixedly connected to the bottom of the movable block (21) on the side close to the first movable block (20), and the first movable block (20) is connected to the second movable block (20) through the hinge shaft (2102). The movable block (21) is rotatably connected, and the second movable block (21) is fixedly connected with one end of the wire rope (16); the first movable block (20) does not extend into the first abdication groove (1902) ) part and the bottom surface of the mounting block (19) with a space reserved, the space is larger than the profile of the detachable steel ring (18) section, the outside of the hinge shaft (2102) is sleeved with a screw The two ends of the coil spring are respectively fixedly connected to the first movable block (20) and the second movable block (21). 2 . The plankton net for collecting plankton isotope samples by grading according to claim 1 , wherein a plankton collector is communicated with one end of the filter screen away from the first support ring ( 4 ). 3 . and a valve is communicated with one end of the plankton collector away from the filter screen. 3. A plankton net for collecting plankton isotope samples by grading according to claim 1, characterized in that: the number of the filter nets is N, N≥2, and the N layers of the filter nets are set in sequence . 4 . The plankton net for collecting plankton isotope samples by grading according to claim 3 , wherein the number of the filter nets is 3, and the 3 layers of the filter nets are set in sequence. 5 .

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