A separation type plankton sample collection device

Abstract

The present invention discloses a separate plankton sample collection device, which relates to the technical field of marine equipment and is used to overcome the mutual influence between the underwater environment and the sampling and collection nets, and the problem of interference between analysis and sampling and the collection of aquatic biological samples. The present invention mainly reduces the interference and influence of the collection and fishing water environment on the collection by providing a net support, a fishing net, a sliding wire, a folding drive wheel, and a sliding reinforcement block; improves the accuracy of underwater biological population sampling surveys, improves the coordination ability of the collection flux to the population density, and reduces the degree of damage to the underwater ecology caused by sampling and collection. By providing a sampling cylinder, a sampling cavity, a permeable layer, a docking arm, and a docking mounting seat, the rationality of the collection amount of biological samples is improved, the density of aquatic organisms in the flow path is reduced, and the swimming stress of aquatic organisms when passing through the collection device is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of marine equipment, and in particular to a separation-type plankton sample collecting device. Background Art

[0002] Fish eggs and fry are the early life stages of fish and are the most vulnerable stages of the fish life cycle. They are easily affected by environmental stress and human activities. The abundance of fish at this stage will directly affect the abundance of fish replenishment resources, which in turn leads to fluctuations in the number of fish populations. Therefore, resource monitoring and assessment of fish eggs and fry are particularly important. It is one of the important steps in ecosystem-based fishery resource management and is of great significance to the conservation and sustainable development and utilization of fishery resources. For fish eggs and fry, independent scientific surveys by fisheries are the only way to obtain information on their resources. Up to now, large-scale plankton nets are still the main sampling nets for collecting fish eggs and fry.

[0003] Traditional plankton collection devices usually use nets with suitable filtration mesh to make fishing structures. At the tail of the fishing net, collection bottles and other containers are installed through reinforcing ribs, so as to sample and collect underwater plankton such as captured fish fry and juvenile aquatic organisms. Common fishing methods include trawl nets, special fishing nets, and floating in-situ collection nets.

[0004] In existing technology, plankton sampling and fishing nets are typically installed on ships or other watercraft. These nets are carried by marine equipment and sailed through the plankton survey area, allowing for targeted fishing based on actual conditions, thus accelerating sampling and fishing efficiency. However, existing plankton sampling and fishing nets typically rely on manual operation, are time-consuming, and their effectiveness varies significantly depending on the water conditions, making them unsuitable for modern plankton sampling and survey work.

[0005] In the prior art, for example, the U.S. invention patent US20160003713A1 discloses a multi-environment aquatic organism sampling system. In this invention patent, a displacement device such as a winch cable is used to provide displacement drive to adjust the overall underwater position of the aquatic organism sampling net and the sampling and analysis channel; under the capture of the fishing net, the underwater organisms gradually pass through the channel of the sample analysis chamber in the set channel, and are analyzed under the feature collection of the underwater camera assembly, thereby completing the collection and analysis of aquatic species. In this technical solution, when the underwater conditions in the sampling waters are poor, the analysis chamber may be easily blocked by the underwater organisms caught in the net, making it difficult to adapt to the population survey work of plankton sampling and analysis in various waters; at the same time, the fishing and analysis system relies on the automatic analysis of electrical equipment, which may make it difficult to intercept the sampled samples, and may easily result in missed analysis or inaccurate analysis.

[0006] For example, U.S. invention patent US5578768A discloses a sampling and collection device for collecting small aquatic organisms. In this invention patent, a collection cylinder with flow-discharge and pressure-relief capabilities is installed at the tail of a conical trawl net, so that a small amount of aquatic organisms can be caught for sampling and analysis while being carried by a ship or other watercraft. In this technical solution, the tail collection cylinder of the leakage filtration may easily cause blockage when collecting aquatic organisms, thereby causing plankton and other aquatic organisms in the fishing channel to escape; at the same time, since the trawl net part has no reinforced structure to support it, it may easily become entangled or twisted in the net body. In addition, the collection cylinder at the tail end may have cavities and gaps during quick installation, causing the collection cylinder to fall, which may make it difficult to conduct stable and efficient plankton sampling and survey work. Summary of the Invention

[0007] The purpose of the present invention is to provide a separate plankton sample collection device to overcome the shortcomings of the prior art, such as the mutual influence between the underwater environment and the sampling and collection net, which reduces the sampling efficiency of aquatic population survey and analysis, and the interference of analysis and sampling with the collection of aquatic samples.

[0008] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0009] A separate plankton sample collection device includes a collecting tube, a sampling and analysis channel is provided in the collecting tube, a net support and a fishing net are provided at one end of the collecting tube, the net support and the fishing net form a tapered channel, and the tapered channel guides aquatic organisms through the sampling and analysis channel.

[0010] The net support is provided with a folding drive wheel and a sliding wire. The folding drive wheel is connected to the sliding wire by power. A group of sliding reinforcement blocks are slidably connected to the sliding wire. The other end of the sliding reinforcement block is fixedly connected to the fishing net. A sliding reinforcement block farthest from the collecting pipe is fixedly connected to the sliding wire. The sliding wire can drive the fishing net to stretch and fold along the axial direction of the net support.

[0011] By setting up net supports, fishing nets, sliding wires, folding drive wheels and sliding reinforcement blocks, the underwater automatic control and intelligent expansion capabilities can be improved, the intensity of manual operation and the frequency of manual intervention can be reduced, and the interference and influence of the collection water environment on the collection and fishing can be reduced; the fishing escape of underwater organisms such as plankton can be reduced, and the accuracy of underwater biological population sampling and survey can be improved; the sampling and collection efficiency can be improved, the coordination ability of the collection flux to the population density can be improved, and the degree of damage to the underwater ecology caused by sampling and collection can be reduced.

[0012] Preferably, a coarse filter plate is provided at the end of the fishing net away from the collecting pipe, the upper end of the coarse filter plate is hinged to the net support, and the coarse filter plate blocks larger volumes of collected objects from entering the conical channel;

[0013] By setting up coarse filter plates and net supports, the filtration pressure of the collection and fishing channel is reduced, and the smoothness of the fishing flow of plankton sampling and fishing is improved; the capture accuracy of sampling and collection that changes the fishing flux is improved, the dredging pressure is reduced, the working time and stability of underwater sampling and collection are increased, and the efficiency of sampling and survey of aquatic populations is improved.

[0014] Preferably, the right end of the collecting pipe is hinged to the net support, the collecting pipe is provided with a deflection base, the deflection base is fixedly connected to a telescopic rod, the other end of the telescopic rod is fixedly connected to the net support, and the telescopic rod adjusts the deflection angle of the net support relative to the collecting pipe;

[0015] By setting up a net support, a deflection base and a telescopic rod, the accuracy of the net flux for underwater biological population survey sampling is improved, the coordination and control ability of the collection flux and the underwater biological density is improved, and the scope of use of the sampling and collection device is expanded; the ability of the collection device to resist collision and blockage during use is improved, the service life of the collection device is increased, and the maintenance difficulty and cost are reduced.

[0016] Preferably, the fishing net is made of elastically deformable material;

[0017] The structural shape stability of the conical channel is improved, and the ability to resist impact and scratching during the fishing process is improved, which reduces the influence of underwater environmental conditions on the conical channel during the collection and fishing process and improves the stability of the underwater sampling and fishing flux.

[0018] Preferably, a sampling cylinder is provided at the other end of the sampling and analysis channel, a sampling cavity is provided in the sampling cylinder, a water-permeable layer is provided at the end of the sampling cavity away from the collecting tube, a docking arm is provided on the collecting tube, the other end of the docking arm is slidably connected to a docking mounting seat through a spring, the sampling cylinder is fixedly connected to the docking mounting seat, and the docking arm guides the sampling cavity to dock with the sampling and analysis channel;

[0019] By arranging a sampling tube, a sampling cavity, a permeable layer, a docking arm and a docking mounting seat, the collection, capture and bottling and storage operations of biological samples can be simplified, the probability of leakage during the collection process of biological samples is reduced, the analysis and investigation efficiency and accuracy of the collection device are greatly improved, the rationality of the collection amount of biological samples is improved, and the frequency of filtering and collecting plankton by the collection device during the sampling and capturing process is reduced; the patency of the biological flow path during the collection and capturing process is improved, the disability and mortality rate of plankton caused by fishing actions such as docking and filtering is reduced, and the contact damage of the flow path of the collection device to the collected organisms is reduced; the density of aquatic organisms in the flow path is reduced, the swimming stress of aquatic organisms when passing through the collection device is reduced, and the difficulty of automated collection and analysis processing is reduced.

[0020] Preferably, a backwash cover is fixedly connected to the collecting pipe, and a backwash channel is provided in the backwash cover, and the backwash channel guides the water to flow toward the sampling and analysis channel and the tapered channel;

[0021] By setting up a backwash cover and a backwash channel, the reliability of the collection device in switching between various water conditions is improved, the accuracy of the collection device in resetting collection and fishing is improved, and the accuracy of biological collection and retention is improved.

[0022] Preferably, the sampling chamber is provided with an automatic sealing cover, and a sealing spring is fixedly connected between the automatic sealing cover and the side wall of the sampling chamber, and the sealing spring drives the automatic sealing cover to keep the sampling chamber closed;

[0023] By providing an automatic sealing cover and a sealing spring, the utilization efficiency of the aquatic organism collection space is improved, the need for manual intervention in the collection of aquatic organisms is reduced, and the convenience of use and collection efficiency of the collection device are improved.

[0024] Preferably, a resistance-increasing telescopic rod is fixedly connected to the docking mounting seat, the other end of the resistance-increasing telescopic rod is rotatably connected to the flow blocking member, the docking mounting seat is hinged to the flow blocking member, and the resistance-increasing telescopic rod controls the deflection of the flow blocking member;

[0025] By setting up a docking mount, a resistance-increasing telescopic rod and a flow-blocking piece, the control convenience of the assembly docking and separation process can be reduced, the need for the collection device to be separated from the underwater environment during the assembly process is reduced, the efficiency of the collection device in collecting aquatic organisms underwater is improved, and the utilization efficiency of the collection device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of a separated plankton sample collection device of the present invention;

[0028] Figure 2 It is a schematic diagram of the connection relationship between adjacent net supports and fishing nets;

[0029] Figure 3 It is a schematic diagram of the assembly relationship between the reinforcing edge and the fishing net and the net support;

[0030] Figure 4 yes Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0031] Figure 5 yes Figure 1 A partial enlarged schematic diagram of point B in the middle;

[0032] Figure 6 yes Figure 1 A partial enlarged schematic diagram of point C in the middle.

[0033] Figure numerals: collecting tube 10; sampling and analysis channel 11; net support 12; fishing net 13; mounting seat 14; coarse filter plate 15; folding drive wheel 20; sliding wire 21; sliding reinforcement block 22; reinforcement connection hole 23; attachment line 24; reinforcement edge 25; hinged seat 27; deflection base 28; telescopic rod 29; synchronous connecting rod 30; sampling tube 40; sampling cavity 41; permeable layer 42; automatic sealing cover 43; sealing spring 44; backwash cover 45; backwash channel 46; docking mounting seat 47; resistance-increasing telescopic rod 48; flow blocking member 49; docking arm 50. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0035] The specific embodiments of the present invention described herein are intended only to explain the present invention and are not to be construed as limiting the present invention in any way. Under the guidance of the present invention, a skilled person may conceive of any possible variations based on the present invention, all of which should be considered to fall within the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to mechanical or electrical connections, or to the internal communication between two elements, and may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] Example 1

[0038] Refer to the attached Figure 1 , Attachment Figure 2 And attached Figure 3As shown, the present invention provides a separated plankton sample collection device, including a collection tube 10, a sampling and analysis channel 11 is provided in the collection tube 10, a collection and analysis probe is provided in the sampling and analysis channel 11, a net support 12 and a fishing net 13 are provided at one end of the collection tube 10, the fishing net 13 is fixedly connected to the side wall of the sampling and analysis channel 11, the net support 12 and the fishing net 13 form a tapered channel, and the tapered channel guides the sampled aquatic organisms to pass through the sampling and analysis channel 11.

[0039] The net support 12 is provided with a folding drive wheel 20 and a sliding wire 21. The folding drive wheel 20 is connected to the sliding wire 21 by power. A group of sliding reinforcement blocks 22 are slidably connected to the sliding wire 21. The other end of the sliding reinforcement block 22 is fixedly connected to the fishing net 13. The sliding reinforcement block 22 farthest from the collecting pipe 10 is fixedly connected to the sliding wire 21. The sliding wire 21 can drive the fishing net 13 to stretch and fold along the axial direction of the net support 12 through the sliding reinforcement block 22.

[0040] A mounting seat 14 is provided on the collection pipe 10. The collection pipe 10, the net support 12, and the fishing net 13 are mounted on the vessel via the mounting seat 14. A drive assembly for axial extension or circumferential rotation of the mounting seat 14 can be provided as needed to drive the collection device body to adjust the depth and direction of the net underwater. A drive assembly can also be provided to drive the collection device body to deflect relative to the mounting seat 14, thereby driving the collection device body to adjust the angle of the conical channel in the underwater net to collect plankton.

[0041] Four net supports 12 are provided at the right end of the collecting pipe 10. A fishing net 13 is provided between two adjacent net supports 12. The two longer sides of the fishing net 13 are fixed to the two adjacent net supports 12. The left end of the fishing net 13 is fixed to the side wall of the sampling and analysis channel 11. The conical channel formed by the net supports 12 and the fishing net 13 guides the caught plankton and other aquatic organisms into the sampling and analysis channel 11 at the left end.

[0042] The side of the fishing net 13 is fixedly connected with a reinforcement edge 25, and the reinforcement edge 25 is provided with two groups of reinforcement connection holes 23 in the length direction of the net support 12. The folding drive wheel 20 provided on the net support 12 drives the sliding wire 21 to rotate. The linear speed direction of the sliding wire 21 is consistent with the length direction of the net support 12. The sliding wire 21 is provided with a group of sliding reinforcement blocks 22 evenly distributed in its length direction. The sliding reinforcement blocks 22 are provided with reinforcement connection holes 23. The sliding reinforcement blocks 22 are slidably connected to the sliding wire 21 through the reinforcement connection holes 23. On the wire 21, the sliding reinforcement block 22 at the far right end, away from the net support 12, is fixedly connected to the net support 12 and moves along with the sliding wire 21. The other end of the sliding reinforcement block 22 is fixedly connected to the reinforcement edge 25 via the attachment line 24. When the rightmost sliding reinforcement block 22 moves along with the sliding wire 21 in the direction of its linear velocity, the remaining sliding reinforcement blocks 22 drive the reinforcement edge 25 and the fishing net 13 to slide along the length direction of the net support 12, thereby stretching or folding the fishing net 13 along the length direction of the net support 12.

[0043] According to the actual plankton collection water conditions, the two longer sides of the fishing net 13 are adjusted to stay in the extended or folded position on the net support 12, thereby controlling the state of the net collection opening formed by the four sides of the fishing net 13 at the right end of the conical channel. This device can adapt to various water conditions to catch plankton, and expand the scope of aquatic biological population surveys when carried by ships and other water vessels. The device connection method is simple and reliable, the manufacturing cost is low, the control is simple, and it can adapt to the development trend of modern automatic control. When surveying the population of underwater organisms such as plankton sampling and collection, it can improve underwater automatic control and intelligent expansion capabilities, reduce the intensity of manual operation and the frequency of manual intervention, improve collection efficiency and stability, improve the adaptability of underwater collection to changes in terrain, reduce the interference and influence of the collection water environment on collection fishing, and the variable collection and fishing opening can reduce the escape of underwater organisms such as plankton, thereby improving the accuracy of underwater biological population sampling and survey.

[0044] When the fishing net 13 is being extended or folded, the conical fishing channel formed by the net support 12 and the fishing net 13 has a variable length of net in the collection and fishing direction. The collection intensity can be adjusted according to the actual density of underwater organisms, thereby maintaining the stability of the collection and fishing volume of aquatic organisms such as plankton, improving the sampling and collection efficiency, improving the coordination ability of the collection flux to the population density, and reducing the degree of damage to the underwater ecology caused by sampling and collection.

[0045] Refer to the attached Figure 1 and attached Figure 4 As shown, a coarse filter plate 15 is provided at the end of the fishing net 13 away from the collecting pipe 10. The upper end of the coarse filter plate 15 is hinged to the net support 12. The filtration volume of the coarse filter plate 15 is larger than the filtration volume of the fishing net 13. The coarse filter plate 15 blocks the larger volume of collected materials from entering the tapered channel.

[0046] The right ends of the two net supports 12 on the upper side are rotatably connected to the coarse filter screen plate 15. Under the action of gravity, the coarse filter screen plate 15 can block large-volume aquatic organisms and other debris entering the conical collection and fishing channel in the collection and fishing direction, thereby reducing the filtration pressure of the collection and fishing channel, avoiding large-volume aquatic organisms from entering the conical channel and the sampling and analysis channel 11 to form blockages, and improving the smoothness of the fishing flow of plankton sampling and fishing; in addition, when the coarse filter screen plate 15 is in a vertical state with one side hinged, large-volume aquatic organisms that accidentally enter the conical channel can escape from fishing under the hinged arrangement of the coarse filter screen plate 15, thereby improving the capture accuracy of sampling and collection that changes the fishing flux, reducing the dredging pressure, increasing the duration and stability of underwater sampling and collection work, reducing the probability of underwater errors in sampling and collection work, and improving the efficiency of sampling and survey of aquatic populations.

[0047] Refer to the attached Figure 1 and attached Figure 5 As shown, the right end of the collection pipe 10 is hingedly connected to the net support 12 through the hinge seat 27. The end of the net support 12 facing the collection pipe 10 is fixedly connected to the hinge seat 27. The end of the collection pipe 10 is hingedly connected to the hinge seat 27. The collection pipe 10 is provided with a deflection base 28. The deflection base 28 is fixedly connected to a telescopic rod 29. The other end of the telescopic rod 29 is fixedly connected to the net support 12. The telescopic rod 29 adjusts the deflection angle of the net support 12 relative to the collection pipe 10.

[0048] A synchronous connecting rod 30 is provided between two adjacent net supports 12. The synchronous connecting rod 30 is connected to the net supports 12 by a track that accommodates relative sliding. The synchronous connecting rod 30 accommodates the relative sliding of the net supports 12 when the net supports 12 are angularly deflected relative to the collection pipe 10 through the hinge seat 27. The net supports 12 and the synchronous connecting rod 30 connected thereto can be angularly deflected relative to the collection pipe 10 under the extension and contraction of the telescopic rod 29, thereby changing the size of the collection and fishing opening of the tapered channel, improving the control effect of the sampling, collection and fishing flux of underwater organisms such as plankton, improving the accuracy of the sampling and fishing net flux for underwater biological population surveys, further improving the coordination and control ability of the collection flux and the density of underwater organisms, expanding the scope of use of the sampling and collection device, and further reducing the damage of the sampling device to the underwater ecology;

[0049] In addition, with the folding and stretching of the fishing net 13, the collection device can realize the change and adjustment of various fishing opening forms, thereby improving the ability of the collection device to resist the collision and blockage of large underwater organisms and debris during use, increasing the service life of the collection device, and reducing the difficulty and cost of maintenance.

[0050] The fishing net 13 is made of elastic deformable material;

[0051] The elastic deformation of the fishing net 13 can adapt to the folding and stretching process, and when the net support 12 is deflected relative to the collecting tube 10, it can maintain a good spreading effect, thereby improving the structural shape stability of the conical channel, and at the same time improving the ability to resist impact and scratches during the fishing process, reducing the influence of underwater environmental conditions on the conical channel during the collection and fishing process, improving the stability of the underwater sampling and fishing flux, and further improving the sampling and fishing efficiency and accuracy of the collection device.

[0052] Refer to the attached Figure 1 and attached Figure 6 As shown, a sampling cylinder 40 is provided at the other end of the sampling and analysis channel 11, and a sampling cavity 41 is provided in the sampling cylinder 40. A water-permeable layer 42 is provided at the end of the sampling cavity 41 away from the collecting tube 10. The collecting tube 10 is provided with a docking arm 50, and a docking mounting seat 47 is slidably connected to the docking arm 50 through a spring. The docking mounting seat 47 is fixedly connected to the sampling cylinder 40. The docking arm 50 guides the sampling cavity 41 to dock with the sampling and analysis channel 11. The end of the sampling cylinder 40 facing the collecting tube 10 cooperates with the end of the sampling and analysis channel 11.

[0053] One end of the docking arm 50 is fixedly connected to the collection tube 10, or according to actual needs, the docking arm 50 can be arranged on the collection tube 10 in a manner that it can change its docking position relative to the collection tube 10 while following the movement of the collection tube 10. The other end of the docking arm 50 is slidably connected to the docking mounting seat 47. The docking arm 50 is slidably connected to the docking mounting seat 47 through a sliding groove and a spring. The sampling tube 40 is clamped on the docking mounting seat 47. Under the action of the spring and the sliding groove provided on the docking arm 50, after the docking arm 50 guides the direction to align with the collection tube 10, the spring guides the docking mounting seat 47 that clamps the sampling tube 40 to approach the collection tube 10, and under the elastic force of the spring, the sampling cavity 41 is kept docked with the sampling and analysis channel 11, so that the plankton caught by the collection device and passing through the sampling and analysis channel 11 is collected by the sampling tube 40;

[0054] The collection tube 10 and the sampling tube 40 are clamped and matched by the docking arm 50 and the docking mounting seat 47, thereby realizing a detachable connection between the sampling tube 40 and the collection tube 10, so that the sampling cavity 41 and the sampling and analysis channel 11 can be docked according to actual needs, so that the caught plankton can be collected through the sampling tube 40; if an automatic analysis probe is provided in the sampling and analysis channel 11 to automatically analyze and investigate the plankton passing through the sampling and analysis channel 11, a drive assembly can be provided on the collection tube 10 to control the relative position between the docking arm 50 and the collection tube 10, so that the drive assembly controls the docking arm 50 and the docking mounting seat 47 to drive the sampling cavity 41 to disengage from or dock with the sampling and analysis channel 11;

[0055] The separate cooperation between the sampling cylinder 40 and the collecting tube 10 can effectively reduce the demand for plankton fishing and collection during the automated analysis and investigation of plankton, greatly reducing the need for manual operation in plankton collection and investigation; at the same time, it can simplify the collection, capture, bottling and storage operations of biological samples, reduce the probability of leakage during the collection process of biological samples, greatly improve the efficiency and accuracy of the collection device in sampling, capturing, analyzing and investigating plankton and other underwater organisms, improve the rationality of the collection amount of biological samples, reduce the frequency of filtering and collecting plankton by the collection device during the sampling and capturing process, improve the patency of the biological flow path during the collection and capturing process, reduce the disability and mortality rate of plankton caused by fishing actions such as docking and filtering, reduce the contact damage of the collection device flow path to the collected organisms, and further reduce the damage to the underwater ecology caused by the collection device sampling and analysis;

[0056] In addition, the reasonable biological flow flux control of the collection device can effectively reduce the density of aquatic organisms in the flow path, reduce the swimming stress of aquatic organisms when passing through the collection device, improve the accuracy of aquatic biological analysis and investigation, reduce the difficulty of analysis and processing of automated collection and analysis of aquatic biological populations, and improve the automation expansion performance of the collection device.

[0057] Refer to the attached Figure 1 and attached Figure 6 As shown, a backwash cover 45 is fixedly connected to the collecting pipe 10, and a backwash channel 46 is provided in the backwash cover 45. The backwash channel 46 guides the water to flow toward the sampling and analysis channel 11 and the tapered channel;

[0058] The left end face of the collecting pipe 10 is fixedly connected to a backwash cover 45. When the sampling tube 40 is disengaged from the collecting pipe 10, the water flow is guided into the sampling and analysis channel 11 through the backwash channel 46. When the collecting device moves in the opposite direction of the collection and fishing direction under the drive of the boat, the water flow and underwater organisms enter the sampling and analysis channel 11 through the backwash channel 46 and then flow out in the tapered channel. At this time, during the reverse flow of the water flow moving relative to the collection device, the water flow flushes the sampling and analysis channel 11 and the inside of the tapered channel of the collecting device, which can reversely clean the collecting device. In addition, during the reverse movement of the collecting device, the coarse filter plate 15 is acted upon by inertia, and the coarse filter plate 15 swings around the hinged position at the upper end of the tapered channel opening to maintain the backwash opening of the tapered channel, thereby improving the simplicity of the dredging process of the collecting device, reducing the probability of clogging and damage of the collecting device, and extending the service life of the collecting device, further reducing the need for manual operation, and improving the efficiency of the aquatic organism sampling and analysis process;

[0059] In addition, when switching between different water environments, the collection device is moved by the boat. During the backwash process, the possibility of plankton adhering to the collection device can be reduced, and the fishing status of the collection device can be reset and cleared, thereby improving the reliability of the collection device in switching between various water conditions, improving the accuracy of the collection device in resetting collection and fishing, improving the accuracy of biological collection and retention, and improving the accuracy of aquatic biological survey and analysis results.

[0060] Refer to the attached Figure 6 As shown, the sampling chamber 41 is provided with an automatic sealing cover 43, and a sealing spring 44 is fixedly connected between the automatic sealing cover 43 and the side wall of the sampling chamber 41. The automatic sealing cover 43 closes the conduction state between the sampling chamber 41 and the sampling and analysis channel 11 under the condition of low water flow impact, and the sealing spring 44 drives the automatic sealing cover 43 to keep the sampling chamber 41 closed.

[0061] Under the elastic force of the sealing spring 44, the automatic sealing cover 43 always remains in contact with the right end of the sampling chamber 41, so that the sampling chamber 41 remains in a closed state. When the sampling tube 40 and the collecting tube 10 are docked, the water flow flowing from the conical channel through the sampling and analysis channel 11 to the sampling tube 40 impacts the automatic sealing cover 43, driving the sealing spring 44 to expand and contract, thereby opening the sampling chamber 41. When the water flow impact is small, the automatic sealing cover 43 always maintains the position state of closing the opening of the sampling chamber 41, and can automatically close the sampling chamber 41 under speed control, reducing the frequency of plankton collection, improving the utilization efficiency of the aquatic organism collection space, reducing the need for manual intervention in aquatic organism collection, improving the convenience and efficiency of the collection device, and at the same time reducing the possibility of aquatic organisms blocking the collection process, thereby improving the stability and safety of the device.

[0062] Refer to the attached Figure 6 As shown, a resistance-increasing telescopic rod 48 is fixedly connected to the docking mounting seat 47, and the other end of the resistance-increasing telescopic rod 48 is rotatably connected to a flow blocker 49. The docking mounting seat 47 is hinged to the flow blocker 49, and the resistance-increasing telescopic rod 48 controls the deflection angle of the flow blocker 49 relative to the axial direction of the sampling tube 40;

[0063] After the resistance-increasing telescopic rod 48 controls the deflection angle of the flow-blocking member 49 in the horizontal direction, the water flow impacts the flow-blocking member 49 to generate thrust, thereby driving the docking mounting seat 47 to slide relative to the docking arm 50, thereby driving the sampling tube 40 to move toward the collecting tube 10 first, realizing the docking and separation between the sampling tube 40 and the collecting tube 10, which can reduce the control convenience of the assembly docking and separation process, reduce the need for the collection device to be separated from the underwater environment during the assembly process, improve the efficiency of the collection device in collecting aquatic organisms underwater, and improve the use efficiency of the collection device.

[0064] Example 2

[0065] The telescopic rod 29 and the resistance-increasing telescopic rod 48 can be arranged on the collection device using a structure such as an inner and outer tube control cable, thereby reducing the difficulty of wiring and assembling the sampling and fishing control drive and improving the waterproof performance of the collection device. When an automated analysis probe is installed in the sampling and analysis channel 11, the sealing and packaging performance of the electrical components of the collection device can be further improved, and the adaptability of the automated control expansion can be improved.

[0066] In addition, special motion drive components such as depth adjustment and angle adjustment can be installed on the vessels such as ships on which the collection device is carried, so that the mounting seat 14, the yaw base 28 and the docking mounting seat 47 are integrated on the drive component, further reducing the independence of the components of the collection device, reducing maintenance and interchange costs, isolating the depth of correlation between the motion drive adjustment and the collection and fishing movements of the components, and improving the convenience and difficulty of installing the collection device on vessels such as ships, thereby improving the stability of the sampling performance of the collection device and the sampling and fishing effect.

[0067] The above is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes made by those skilled in the art without departing from the concept and principle of the present invention should fall within the scope of protection of the present invention.

Claims

1. A separated plankton sample collection device, comprising a collecting tube (10), wherein a sampling and analysis channel (11) is provided in the collecting tube (10), a net support (12) and a fishing net (13) are provided at one end of the collecting tube (10), wherein the net support (12) and the fishing net (13) form a tapered channel, wherein the tapered channel guides aquatic organisms to pass through the sampling and analysis channel (11), and wherein: The net support (12) is provided with a folding drive wheel (20) and a sliding wire (21), the folding drive wheel (20) is dynamically connected to the sliding wire (21), a group of sliding reinforcement blocks (22) are slidingly connected to the sliding wire (21), the other end of the sliding reinforcement block (22) is fixedly connected to the fishing net (13), and one of the sliding reinforcement blocks (22) farthest from the collecting pipe (10) is fixedly connected to the sliding wire (21), and the sliding wire (21) can drive the fishing net (13) to stretch and fold along the axial direction of the net support (12); A sampling cylinder (40) is provided at one end of the sampling and analysis channel (11), a sampling cavity (41) is provided in the sampling cylinder (40), a water-permeable layer (42) is provided at one end of the sampling cavity (41) away from the collecting tube (10), a docking arm (50) is provided on the collecting tube (10), the other end of the docking arm (50) is slidably connected to a docking mounting seat (47) via a spring, the sampling cylinder (40) is fixedly connected to the docking mounting seat (47), and the docking arm (50) guides the sampling cavity (41) to dock with the sampling and analysis channel (11); The sampling chamber (41) is provided with an automatic sealing cover (43), and a sealing spring (44) is fixedly connected between the automatic sealing cover (43) and the side wall of the sampling chamber (41), and the sealing spring (44) drives the automatic sealing cover (43) to keep the sampling chamber (41) closed; a resistance-increasing telescopic rod (48) is fixedly connected to the docking mounting seat (47), and the other end of the resistance-increasing telescopic rod (48) is rotatably connected to a flow blocking member (49), and the docking mounting seat (47) is hinged to the flow blocking member (49), and the resistance-increasing telescopic rod (48) controls the deflection of the flow blocking member (49).

2. A separate plankton sample collection device as claimed in claim 1, characterized in that: The end of the fishing net (13) away from the collecting pipe (10) is provided with a coarse filter plate (15), the upper end of the coarse filter plate (15) is hinged to the net support (12), and the coarse filter plate (15) blocks larger volumes of collected objects from entering the conical channel.

3. A separate plankton sample collection device as claimed in claim 1, characterized in that: The right end of the collecting pipe (10) is hinged to the net support (12), and a deflection base (28) is provided on the collecting pipe (10). A telescopic rod (29) is fixedly connected to the deflection base (28), and the other end of the telescopic rod (29) is fixedly connected to the net support (12). The telescopic rod (29) adjusts the deflection angle of the net support (12) relative to the collecting pipe (10).

4. A separate plankton sample collection device as claimed in claim 3, characterized in that: The fishing net (13) is made of elastic deformable material.

5. A separate plankton sample collection device according to any one of claims 1 to 4, characterized in that: A backwash cover (45) is fixedly connected to the collecting pipe (10), and a backwash channel (46) is provided in the backwash cover (45). The backwash channel (46) guides water to flow toward the sampling and analysis channel (11) and the tapered channel.

Images