Phytoplankton qualitative sample collecting device
By designing a phytoplankton collection device that combines a pulley and a traction rope with a multi-layer net bag, the problem that traditional devices cannot collect samples at long distances is solved, and efficient sampling operations without going into the water are achieved, thereby improving sampling efficiency and sample quality.
Patent Information
- Application Number
- CN202421840259.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-07-31
AI Technical Summary
Traditional phytoplankton sampling devices cannot achieve long-distance sampling, have great limitations, and are difficult and inefficient to sample.
A qualitative phytoplankton sample collection device was designed, which included a sampling rod, a guide ring, a pulley, a traction rope and a sampling net bag. The pulley and traction rope were used to achieve long-distance sampling, and the multi-layer net bag structure was combined to filter impurities. The sampling rod was retractable to adapt to different scenarios.
It enables long-distance sampling without going into the water, reduces sampling difficulty, improves sampling efficiency, and improves sample quality through the multi-layer net bag structure.
Smart Images
Figure CN223320068U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of phytoplankton sampling, in particular to a phytoplankton qualitative sample collection device. Background Art
[0002] Phytoplankton are tiny plants that live in water and have the ability to move effectively. They are widely distributed and have a wide variety of species. They are important primary producers in water bodies. At the same time, the species composition and distribution of phytoplankton have an important indicative role in environmental changes. They are usually used as important indicator organisms of water quality and play an extremely important role in maintaining the circulation of matter and energy in aquatic ecosystems.
[0003] In order to obtain the species, distribution, community structure and change patterns of phytoplankton, it is generally necessary to sample phytoplankton; currently, the tool for collecting phytoplankton is a phytoplankton collection net, which mainly includes a net bag and a collection tube; when collecting phytoplankton in the wild, some sampling points are not convenient for sampling in the water, and samples need to be obtained directly on the shore or on a bridge. Traditional sampling devices cannot achieve long-distance sampling, have great limitations, are difficult to sample and have low sampling efficiency. Utility Model Content
[0004] In response to the technical problems existing in the prior art, the utility model provides a phytoplankton qualitative sample collection device to solve the technical problems that traditional sampling devices cannot achieve long-distance sampling, have great limitations, are difficult to sample and have low sampling efficiency.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] The utility model provides a phytoplankton qualitative sample collection device, comprising a sampling rod, a guide ring, a sampling net bag, a plurality of sample collectors, a connecting ring, a traction rope and a pulley;
[0007] The guide ring is provided at the free end of the sampling rod; the pulley is provided on the side of the sampling rod and close to the handheld end of the sampling rod; the first end of the traction rope is wound around the pulley, and the second end of the traction rope passes around the guide ring and extends vertically downward;
[0008] The upper end of the connecting ring is connected to the second end of the traction rope, and the lower end of the connecting ring is connected to the upper end of the sampling net bag; the sampling net bag is a cylindrical structure with an open top, and several sample collectors are arranged at the bottom end of the sampling net bag.
[0009] Furthermore, the sampling rod is a telescopic rod.
[0010] Furthermore, the sampling net bag includes a net bag upper ring, a first net bag, a second net bag and a plurality of conical net bags;
[0011] The first net bag is a cylindrical structure with upper and lower openings, and the second net bag is a cylindrical structure with an upper opening and a lower closed end; the net bag upper opening ring is arranged at the upper opening of the first net bag, and the lower opening of the first net bag is connected to the upper opening of the second net bag; the bottom end of the second net bag is provided with a plurality of openings, each of which is provided with a conical net bag, and the sample collector is correspondingly arranged at the bottom end of the conical net bag;
[0012] The mesh density of the first net bag is smaller than that of the second net bag, and the mesh density of the conical net bag is the same as that of the second net bag.
[0013] Furthermore, a connecting buckle, a connecting rope and several fixing rings are provided between the connecting ring and the sampling net bag;
[0014] Several fixing rings are evenly distributed around the upper end of the circular ring on the upper opening of the net bag; each fixing ring is connected to the lower end of the connecting buckle through a connecting rope, and the upper end of the connecting buckle is detachably connected to the lower end of the connecting ring.
[0015] Furthermore, the aperture of the first net bag is 2 meshes, and the apertures of the second net bag and the conical net bag are both 254 meshes.
[0016] Furthermore, the sample collector includes a water reservoir, a water valve, a sample bottle fixing ring and a sample bottle;
[0017] The upper end of the water reservoir is connected to the bottom end of the conical net bag, the lower end of the water reservoir is connected to the sample bottle through the sample bottle fixing ring, and the water valve is arranged at the bottom end of the water reservoir.
[0018] Furthermore, the sample bottle fixing ring and the sample bottle are connected by threads.
[0019] Furthermore, the bottom end of the conical net bag is wrapped around the upper end of the water reservoir and fixedly connected together by a nylon tie.
[0020] Furthermore, the handheld end of the sampling rod is provided with an anti-slip sleeve.
[0021] Furthermore, the traction rope is a nylon rope.
[0022] Compared with the prior art, the beneficial effects of the present invention are:
[0023] The utility model provides a device for collecting qualitative samples of phytoplankton. A pulley is arranged on the handheld end of a sampling rod, and a traction rope wrapped around the pulley is connected to a sampling net bag and a sample collector through a connecting ring. The length of the traction rope is retracted and extended by the pulley so that the net bag can be lowered into the water from a high position such as a shore or a bridge deck to achieve the purpose of long-distance sampling. The device has a simple structure and can achieve sampling without going into the water, which greatly reduces the difficulty of sampling. At the same time, a number of sample collectors are arranged at the bottom end of the sampling net bag, which effectively improves the sampling efficiency.
[0024] Furthermore, the sampling net bag adopts a combination structure of a first net bag, a second net bag and several conical net bags, which can filter out the influence of impurities such as fallen leaves and mud in the water body, thereby improving the quality of the sampling samples. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0026] Figure 1 This is a schematic diagram of the overall structure of the phytoplankton qualitative sample collection device described in the present invention.
[0027] Among them, 1 sampling rod, 2 guide ring, 3 connecting buckle, 4 connecting rope, 5 fixing ring, 6 net bag upper ring, 7 first net bag, 8 second net bag, 9 conical net bag, 10 water reservoir, 11 water valve, 12 sample bottle fixing ring, 13 sample bottle, 14 connecting ring, 15 traction rope, 16 pulley. DETAILED DESCRIPTION
[0028] In order to make the technical problems, technical solutions, and beneficial effects solved by this application more clearly understood, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application; it is obvious that the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.
[0029] As attached Figure 1 As shown, the utility model provides a phytoplankton qualitative sample collection device, including a sampling rod 1, a guide ring 2, a connecting buckle 3, a connecting rope 4, a plurality of fixing rings 5, a sampling net bag, a plurality of sample collectors, a connecting ring 14, a traction rope 15 and a pulley 16.
[0030] The sampling rod 1 is a stainless steel rod, one end of the sampling rod 1 is a handheld end, and the other end is a free end; the guide ring 2 is arranged at the free end of the sampling rod 1, and is used to guide the traction rope 15; wherein, the guide ring 2 is directly welded to the free end of the sampling rod 1; preferably, the sampling rod 1 is a telescopic rod, and the sampling half-price range can be adjusted by adjusting the telescopic length of the sampling rod 1; the handheld end of the sampling rod 1 is provided with an anti-slip sleeve to facilitate the user to grasp the sampling rod 1.
[0031] The pulley 16 is arranged on the side of the sampling rod 1 and is close to the handheld end of the sampling rod 1; wherein, the pulley 16 is detachably connected to the sampling rod 1; the first end of the traction rope 15 is wound around the pulley 16, and the release length of the traction rope 15 is adjusted by adjusting the pulley 16 to meet the requirements of high-position sampling; the second end of the traction rope 15 passes around the guide ring 2 and extends vertically downward; the connecting ring 14, the connecting buckle 3, the connecting rope 4, the fixing ring 5, the sampling net bag and the sample collector are arranged in sequence from top to bottom below the second end of the traction rope 15; preferably, the traction rope 15 is made of nylon rope.
[0032] Specifically, the upper end of the connecting ring 14 is connected to the second end of the traction rope 15, and the lower end of the connecting ring 14 is detachably fixed to the upper end of the connecting buckle 3; the upper end of the connecting rope 4 is connected to the lower end of the connecting buckle 3, and the lower end of the connecting rope 4 is connected to the upper end of the sampling net bag through the fixing ring 5; the sample collector is arranged at the bottom end of the sampling net bag for collecting water samples containing phytoplankton.
[0033] The sampling net bag is a cylindrical structure with an opening at the top, specifically including a net bag upper ring 6, a first net bag 7, a second net bag 8 and a plurality of conical net bags 9; the first net bag 7 is a cylindrical tube structure with openings at the top and bottom, and the second net bag 8 is a cylindrical tube structure with an opening at the top and a closed bottom; the net bag upper ring 6 is arranged at the upper end of the first net bag 7, and the lower end of the first net bag 7 is connected to the upper end of the second net bag 8; wherein, the lower end of the first net bag 7 and the upper end of the second net bag 8 are detachably fixedly connected so as to facilitate the first net bag 7 to be detached and fixedly connected. Or the second net bag 8 is replaced and maintained; the bottom end of the second net bag 8 is provided with a plurality of through openings, and a plurality of the conical net bags 9 are correspondingly provided at the plurality of through openings; that is, each of the through openings is respectively provided with a conical net bag 9; wherein, the conical net bag 9 is a conical structure with an upper opening, and the upper opening of the conical net bag 9 is connected to the through opening; the sample collector is correspondingly provided at the bottom end of the conical net bag 9, and the bottom end of the conical net bag 9 is wrapped around the upper end of the sample collector and fixed together by a nylon tie.
[0034] In the present invention, the mesh density of the first net bag 7 is smaller than the mesh density of the second net bag 8, and the mesh density of the conical net bag 9 is the same as the mesh density of the second net bag 8, so as to isolate impurities in the water body from entering the sample collector; preferably, the aperture of the first net bag 7 is 2 mesh, and the apertures of the second net bag 8 and the conical net bag 9 are both 254 mesh; it should be noted that the lengths of several conical net bags 9 are the same or different designs, so as to realize simultaneous sampling of different sampling points of the same sampling layer or different sampling points of different sampling layers, and independently save the sampling samples of different sampling points, which effectively improves the sampling efficiency.
[0035] There are several fixing holes evenly distributed on the circumference of the upper end of the circular ring 6 of the net bag, and the number of the fixing holes is the same as the number of the fixing rings 5, and they are arranged in a one-to-one correspondence; wherein, the lower end of the fixing ring 5 can be detachably installed in the fixing hole to realize the connection between the fixing ring 5 and the circular ring 6 of the net bag; the number of the fixing rings 5 is also the same as the number of the connecting ropes 4, and each of the fixing rings 5 is connected to the lower end of the connecting buckle 3 through a connecting rope 4; preferably, the number of the fixing holes on the connecting rope 4, the fixing ring 5 and the circular ring 6 of the net bag is four; preferably, the connecting rope 4 is made of nylon rope.
[0036] The sample collector is made of stainless steel and includes a water reservoir 10, a water valve 11, a sample bottle fixing ring 12 and a sample bottle 13 arranged in sequence from top to bottom; specifically, the upper end of the water reservoir 10 is wrapped by the bottom end of the conical net bag 9 and fixed together by a nylon tie; the upper end of the sample bottle fixing ring 12 is connected to the lower end of the water reservoir 10, and the lower end of the sample bottle fixing ring 12 is detachably connected to the upper end of the sample bottle 13; wherein, the sample bottle fixing ring 12 and the sample bottle 13 are threadedly connected; the water valve 11 is arranged at the bottom end of the water reservoir 10, for controlling the water sample to enter the sample bottle 13 from the water reservoir 10.
[0037] Working principle and sampling method:
[0038] The phytoplankton qualitative sample collection device described in the present invention can be used in two modes according to the sampling scenario; the specific modes are as follows:
[0039] One is near-water sampling, specifically: use the pulley 16 to completely retract the traction rope 15 until the connecting ring 14 is close to the guide ring 2, or after removing the pulley 16 and the traction rope 15, directly install the connecting ring 14 on the guide ring 2; then, close the water valve 11 in the sample collector; after that, adjust the sampling rod 1 to a preset length, use the sampling rod 1 to connect the sampling net bag to the sample collector and throw it into the water body, and perform sampling according to the preset requirements; after the sampling is completed, collect the sampling net bag to the shore, and then open the water valve 11 to put the water sample in the water tank 10 into the sample bottle 13, and the near-water sampling operation is completed.
[0040] The second is sampling at a high position on the bridge deck, specifically: close the water valve 11 in the sample collector and adjust the sampling rod 1 to a preset length; then, release the traction rope 15 to a preset length by rotating the pulley 16; after that, connect the sampling net bag to the sample collector from a high position on the bridge deck through the sampling rod 1 and the traction rope 15 and throw it into the water body to take samples according to the preset requirements; after the sampling is completed, collect the sampling net bag to the shore, and then open the water valve 11 to put the water sample in the water tank 10 into the sample bottle 13, and the near-water sampling operation is completed.
[0041] It should be noted that according to the phytoplankton sampling specifications, river sampling is divided into two ecological types: the river center area and the coastal zone; among them, sampling is carried out in the center of the main stream in the narrow section of the riverbed, and sampling is carried out in sections in the upper, middle and lower reaches of the river. Additional sampling points should be added at the confluence of the main tributaries of the river; according to the purpose of the investigation, local areas of the river and slow-flowing or still water sections can be sampled in layers; the water samples of each sampling point can be kept separately, or the water samples collected on the section can be mixed into mixed water samples in proportion according to the water samples of the horizontal sampling points of the section or the water samples at the same depth of the horizontal sampling points of the section, or the water samples of each sampling point in the section can be mixed vertically; the water samples of each sampling point can be kept separately when studying the species composition of the river center area and the coastal zone.
[0042] In the utility model, a phytoplankton net with a space of 254 meshes is used to collect qualitative samples, so that the upper opening of the sampling net bag is kept 50 cm below the water surface, and is slowly dragged in an "∞" shape for collection; after the water sample is injected into the water sample bottle, it should be avoided from direct sunlight and stored at a low temperature of 0-4°C with the addition of Lugo reagent for fixation.
[0043] In the present invention, the sampling rod 1 is made of stainless steel, and a guide ring 2 is welded at its end. The pulley 16 is detachably mounted on the handheld end of the sampling rod 1; one end of the traction rope 15 is wound around the pulley 16, and the other end is connected to the connecting ring 14 after passing through the guide ring 2; then it is connected to the connecting buckle 3 through the connecting ring 14, and then connected to the upper ring 6 of the sampling net bag through the connecting rope 4; the first net bag 7 is fixed on the upper ring 6 of the net bag, and the upper edge of the upper ring 6 of the net bag is connected to the fixing ring 5, the number of the connecting ropes 4 is the same as the number of the fixing rings 5, and each connecting rope is connected to the upper ring 6 of the sampling net bag. One end of the rope is connected to the connecting buckle 3, and the other end is connected to the fixed ring 5; the water reservoir 10 is a cylindrical structure, and the upper part of the water reservoir 10 is wrapped and fixed by the bottom end of the conical net bag; the water valve 11 is arranged at the lower part of the water reservoir 10; the sample bottle 13 fixing ring is arranged below the water valve 11, and is connected to the bottom end of the water reservoir 10 through the sample bottle fixing ring 12; by arranging a telescopic rod and a pulley, the scenes of sampling near the water and sampling on the bridge can be realized at the same time, which improves the use range of the device; the bottom of the collection tube can be directly connected to the sample bottle, the diameter of the collection tube is increased, and the operation frequency is reduced.
[0044] In the utility model, the sampling rod is set as a telescopic rod, and the sampling comfort and sampling efficiency are improved by adjusting the telescopic length of the sampling rod; the sampling net bag is designed as a combination of a first net bag, a second net bag and a plurality of conical net bags, which can effectively filter impurities such as fallen leaves and mud in the water body; wherein, the lengths of the plurality of conical net bags are the same or different, so as to realize simultaneous sampling of different sampling points of the same sampling layer or different sampling points of different sampling layers, and the sampling samples of different sampling points are independently stored, which effectively improves the sampling efficiency; by arranging a pulley and a traction rope, the net bag can be put into the water body by adjusting the length of the traction rope, which can solve the remote sampling situation such as sampling on a bridge; the sample collector is made of stainless steel, which has a larger water storage volume, can prevent rust, and increase weight, so that the net bag can sink quickly after entering the water, and can further prevent blockage; the sample bottle is connected under the water valve, which is convenient for sampling operation. It only needs to open the water valve after sampling is completed. There is no need for someone to hold the sample bottle for sampling separately, which saves manpower.
[0045] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes within the technical scope disclosed by the present invention, any changes, replacements and other implementation methods that can be easily thought of by any technician familiar with this technical field.
Claims
1. A phytoplankton qualitative sample collection device, characterized in that: It comprises a sampling rod (1), a guide ring (2), a sampling net bag, a plurality of sample collectors, a connecting ring (14), a traction rope (15) and a pulley (16); The guide ring (2) is arranged at the free end of the sampling rod (1); the pulley (16) is arranged on the side of the sampling rod (1) and close to the handheld end of the sampling rod (1); the first end of the traction rope (15) is wound around the pulley (16), and the second end of the traction rope (15) passes around the guide ring (2) and extends vertically downward; The upper end of the connecting ring (14) is connected to the second end of the traction rope (15), and the lower end of the connecting ring (14) is connected to the upper end of the sampling net bag; the sampling net bag is a cylindrical structure with an open top, and a plurality of sample collectors are arranged at the bottom end of the sampling net bag.
2. A phytoplankton qualitative sample collection device according to claim 1, characterized in that: The sampling rod (1) is a telescopic rod.
3. A phytoplankton qualitative sample collection device according to claim 1, characterized in that: The sampling net bag comprises a net bag upper ring (6), a first net bag (7), a second net bag (8) and a plurality of conical net bags (9); The first net bag (7) is a cylindrical structure with upper and lower openings, and the second net bag (8) is a cylindrical structure with an upper opening and a lower closed end; the net bag upper opening ring (6) is arranged at the upper opening of the first net bag (7), and the lower opening of the first net bag (7) is connected to the upper opening of the second net bag (8); the bottom end of the second net bag (8) is provided with a plurality of openings, and each opening is provided with a conical net bag (9), and the sample collector is correspondingly arranged at the bottom end of the conical net bag (9); The mesh density of the first net bag (7) is smaller than the mesh density of the second net bag (8), and the mesh density of the conical net bag (9) is the same as the mesh density of the second net bag (8).
4. A phytoplankton qualitative sample collection device according to claim 3, characterized in that: A connecting buckle (3), a connecting rope (4) and a plurality of fixing rings (5) are further provided between the connecting ring (14) and the sampling net bag; A plurality of the fixing rings (5) are evenly distributed around the upper end of the circular ring (6) at the upper opening of the net bag; each of the fixing rings (5) is connected to the lower end of the connecting buckle (3) via a connecting rope (4), and the upper end of the connecting buckle (3) is detachably connected to the lower end of the connecting ring (14).
5. A phytoplankton qualitative sample collection device according to claim 3, characterized in that: The aperture of the first net bag (7) is 2 meshes, and the apertures of the second net bag (8) and the conical net bag (9) are both 254 meshes.
6. A phytoplankton qualitative sample collection device according to claim 3, characterized in that: The sample collector comprises a water reservoir (10), a water valve (11), a sample bottle fixing ring (12) and a sample bottle (13); The upper end of the water reservoir (10) is connected to the bottom end of the conical net bag (9), the lower end of the water reservoir (10) is connected to the sample bottle (13) through the sample bottle fixing ring (12), and the water valve (11) is arranged at the bottom end of the water reservoir (10).
7. A phytoplankton qualitative sample collection device according to claim 6, characterized in that: The sample bottle fixing ring (12) and the sample bottle (13) are connected by threads.
8. The phytoplankton qualitative sample collection device according to claim 6, characterized in that: The bottom end of the conical net bag (9) is wrapped around the upper end of the water storage container (10) and fixedly connected together by a nylon tie.
9. The phytoplankton qualitative sample collection device according to claim 1, characterized in that: The handheld end of the sampling rod (1) is provided with an anti-slip sleeve.
10. The phytoplankton qualitative sample collection device according to claim 1, characterized in that: The traction rope (15) is a nylon rope.