CN115493885A - Method and tool for sampling plankton vertical water column - Google Patents
Method and tool for sampling plankton vertical water column Download PDFInfo
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- CN115493885A CN115493885A CN202211119607.2A CN202211119607A CN115493885A CN 115493885 A CN115493885 A CN 115493885A CN 202211119607 A CN202211119607 A CN 202211119607A CN 115493885 A CN115493885 A CN 115493885A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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Abstract
The invention discloses a sampling method of plankton vertical water column and a sampling tool thereof, relating to the technical field of plankton sampling, comprising a protective cylinder, wherein a lifting component is arranged at the outer side above the protective cylinder; carry and draw the subassembly including setting up the fixed column in the protection section of thick bamboo outside, the axle slot has been seted up on the fixed column, the axle slot internal rotation is connected with the lifting rod, the top that the fixed column is located the axle slot is seted up and has been put the bar groove, the bar groove runs through the inner wall of protection section of thick bamboo, bar groove and axle slot intercommunication, the bar inslot slides and is provided with the dead lever, the spout has been seted up on the lifting rod, sliding connection has the slide bar in the spout, the shape of slide bar is L shape, the other end of slide bar offsets with the one end of dead lever, the internally mounted of protection section of thick bamboo has the filter screen subassembly, the lower extreme of filter screen subassembly is connected with the sample bottle, be used for depositing the plankton of sampling, there is the protection section of thick bamboo outside the filter screen subassembly, can play the effect to the protection of filter screen subassembly, the service life of filter screen subassembly is prolonged.
Description
Technical Field
The invention belongs to the technical field of plankton sampling, and particularly relates to a plankton vertical water column sampling method and a sampling tool thereof.
Background
In order to research the biological diversity and the water quality of the lake reservoir, the water needs to be sampled, analyzed and researched, and plankton can intuitively reflect the quality and the biological diversity of the water.
For example, the utility model with the application number of CN202120129553.2 relates to a plankton sampling device suitable for black and odorous water, a clamping piece is arranged in a sampling cylinder, the sampling cylinder is connected with a sampling hopper through the clamping piece, the tail end of the sampling hopper is connected with a sampling bottle, one end of the sampling cylinder is connected with a filter screen, the sampling hopper is covered in the sampling cylinder by the filter screen, the opening of the sampling hopper faces the filter screen, and water permeable holes are distributed in the sampling hopper; the other one end of sampling cylinder is formed with outer row of mouth, is equipped with the water pump that is in the inside of sampling cylinder between outer row of mouth and the sampling bottle, and the water pump passes through the sampling fill with the water of filter screen side and leads to outer row of mouth, and the sampling bottle intercepts the sampling to the plankton in the water that gets into the sampling fill. The utility model discloses a to the characteristics that sampling waters, lake and river reach depth of water are shallower, the suspended solid is more, realize the effective sampling of plankton sample, possess efficient, easy operation, the technique is reliable, with low costs, a great deal of characteristics such as easily popularization, still can be used for the plankton sampling of normal water completely.
However above-mentioned current plankton sampling instrument, it is the filter screen structure that is the toper form generally, the shape is like catching the butterfly net to connect the rope at the opening part of filter screen, then connect a handheld pole, during the use, handheld pole rocks about the aquatic, make the plankton enter into in the filter screen, then be vertical state, the water evacuation in the filter screen, the water that contains plankton that remains in making the sample bottle, after arriving the laboratory, open the valve under the sample bottle, sample the plankton in the sample bottle. However, the filter screen is easy to be damaged by shaking in water, and in addition, because plankton is unevenly distributed in a water body and has the characteristic of vertical distribution, only a surface water sample is taken, which cannot well represent community structure characteristics of plankton at a monitoring point position, so that a vertical mixed sample needs to be collected. Most of the existing vertical mixed sample collection is to place a water sampler on each preset water layer (such as 0.5m below the water surface, 1/2 light-transmitting layer, bottom of the light-transmitting layer and the like) for sampling and mixing, and because whether the preset water layer is accurate or not is unknown, the sample has great contingency.
Disclosure of Invention
The invention aims to provide a plankton vertical water column sampling method and a sampling tool thereof, aiming at solving the problems that the existing plankton sampling tool provided by the background technology is generally a conical filter screen structure shaped like a butterfly catching net, a rope is connected to the opening of the filter screen, and then a handheld rod is connected. However, the filter screen is easy to be damaged by shaking in water in the process.
In order to achieve the purpose, the invention provides the following technical scheme:
a plankton vertical water column sampling method comprises the following specific steps:
preparation work: placing a balancing weight at the bottom of the protection cylinder, then installing a filter screen in the protection cylinder, fixing the sample bottle at the lower end of the filter screen, connecting a rope or a connecting rod above the protection cylinder, wherein the length of the rope or the connecting rod can be set to different lengths according to the depth to be measured;
carrying out launching operation: the protective cylinder is slowly and vertically immersed into water, and in the process of immersing into water, the rope needs to be slowly arranged below the protective cylinder, so that the protective cylinder can protect the filter screen;
lifting and pulling: slowly pulling the protection cylinder which is lowered to a proper position upwards, opening the invention below the sample bottle after the water level is pulled out, taking out the water in the sample bottle, and storing the water in the test tube for later use;
cleaning: the device is placed in water for cleaning, then dried in the sun and stored.
A plankton vertical water column sampling tool comprises a protective cylinder, wherein a lifting component is arranged on the outer side above the protective cylinder;
the utility model discloses a take protection cylinder, including the fixed column of carrying the subassembly, including the fixed column of setting in the protection cylinder outside, the axial trough has been seted up on the fixed column, the axial trough internal rotation is connected with the lifting rod, the fixed column is located the top of axial trough and has seted up the bar groove, the bar groove runs through the inner wall of protection cylinder, bar groove and axial trough intercommunication, it is provided with the dead lever to slide in the bar inslot, the spout has been seted up on the lifting rod, sliding connection has the slide bar in the spout, the shape of slide bar is L shape, the other end of slide bar offsets with the one end of dead lever, the spout is embedded to have the spring, the one end fixed connection of spring is on the slide bar, the other end of spring is fixed on the inner wall of spout, the internally mounted of protection cylinder has the filter screen subassembly, the lower extreme of filter screen subassembly is connected with the sample bottle for deposit the sampling plankton.
As a preferable scheme of the invention: the filter screen subassembly includes the solid fixed ring of fixed mounting in a protection section of thick bamboo top, the round fixed orifices has evenly been seted up on the solid fixed ring, twine fixedly connected with filter screen through the iron wire on the fixed orifices, the shape of filter screen is the toper, the constant head tank has been seted up in solid fixed ring's the outside, the constant head tank sets up in one side of dead lever, and the dead lever inserts in the constant head tank, the dead lever is used for fixing the solid fixed ring.
As a preferred embodiment of the present invention: the below of filter screen is the opening form setting, and has the sample bottle at filter screen lower extreme opening part through clamp connection, the lower extreme of sample bottle is provided with the valve, the top of filter screen is provided with the large granule filter screen.
As a preferred embodiment of the present invention: the protection device is characterized in that a fixing lug is arranged on the outer side of the lower portion of the protection barrel, a threaded hole is formed in the fixing lug, a threaded rod is connected to the inner thread of the threaded hole in a threaded mode, and a balancing weight is fixedly connected to the threaded rod.
As a preferred embodiment of the present invention: the top of balancing weight is provided with first couple, the below of sample bottle is provided with the second couple, be connected with the extension spring between first couple and the second couple.
As a preferred embodiment of the present invention: the aperture of the filter screen is 63 microns.
As a preferred embodiment of the present invention: the lifting rod is arranged in the sliding groove, a slot communicated with the sliding groove is formed in the sliding groove, an inserting rod is inserted in the slot in a sliding mode, a wedge-shaped protruding block b is arranged on one side of the inserting rod, the wedge-shaped protruding block a and the wedge-shaped protruding block b are matched with each other, and a pressing cap is arranged above the inserting rod.
The invention has the beneficial effects that:
1. the filter screen component and the protection cylinder are matched for use, the fixing ring is clamped above the protection cylinder, the filter screen is fixed on a fixing hole of the fixing ring, the pressing cap is pressed, the inserting rod can be pressed to move downwards by the pressing cap, and after the inserting rod moves downwards, the wedge-shaped lug b on the inserting rod can be abutted to the wedge-shaped lug a, so that the sliding rod can be driven to move, the sliding rod is inserted into the strip-shaped groove to fix the lifting rod and the filter screen component;
2. the filter screen is light, so the filter screen is easy to float and shake after sinking into water, and the shaking of the filter screen is reduced; a first hook is arranged above the balancing weight, a second hook is arranged below the sample bottle, and a tension spring is connected between the first hook and the second hook; the extension spring that sets up can be held between balancing weight and the sample bottle, makes the sample bottle be located the interior bottom of a protection section of thick bamboo all the time, makes the filter screen be the toper setting, prevents to rock, influences going on of sampling.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a first structural view of the protection cylinder of the present invention;
FIG. 3 is a schematic view of a second structure of the protection cylinder of the present invention;
FIG. 4 is a schematic view of a screen assembly according to the present invention;
FIG. 5 is a schematic view of a sample vial according to the present invention;
FIG. 6 is a schematic view of the internal structure of the sample bottle of the present invention;
FIG. 7 is a schematic cross-sectional view of the protective sleeve of the present invention;
FIG. 8 is an enlarged view of the structure at A in FIG. 7 according to the present invention;
FIG. 9 is a schematic cross-sectional structural view of the present invention;
fig. 10 is an enlarged view of the structure at B in fig. 9 according to the present invention.
In the figure: 1. a protective cylinder; 2. a pull-up assembly; 21. fixing a column; 22. a shaft groove; 23. a strip-shaped groove; 24. fixing the rod; 25. lifting a pull rod; 26. a chute; 261. a slot; 27. a slide bar; 271. a wedge-shaped bump a; 28. a spring; 3. a screen assembly; 31. a sample bottle; 32. a fixing ring; 33. a fixing hole; 34. a filter screen; 35. positioning a groove; 36. a valve; 4. fixing the ear; 41. a threaded hole; 42. a threaded rod; 43. a balancing weight; 431. a first hook; 432. a second hook; 5. a tension spring; 6. inserting a rod; 61. a wedge-shaped projection b; 62. and (5) pressing the cap.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The method is suitable for monitoring plankton in fresh water areas such as lakes, reservoirs and rivers for the purpose of water ecological business monitoring and evaluation, and the application provides a plankton vertical water column sampling method which comprises the following specific steps:
preparation work: placing a balancing weight at the bottom of the protection cylinder, then installing a filter screen in the protection cylinder, fixing the sample bottle at the lower end of the filter screen, connecting a rope or a connecting rod above the protection cylinder, wherein the length of the rope or the connecting rod can be set to different lengths according to the depth to be measured;
launching operation: the protective cylinder is slowly and vertically immersed into water, and in the process of immersing into water, the rope needs to be slowly arranged below the protective cylinder, so that the protective cylinder can protect the plankton filter screen;
lifting and pulling: slowly pulling the protection cylinder which is lowered to a proper position upwards, opening the invention below the sample bottle after the water level is pulled out, taking out the water in the sample bottle, and storing the water in the test tube for later use;
cleaning: the device is placed in water for cleaning, then dried in the sun and stored.
The method comprises the steps of directly placing a sampler to the bottom of water, slowly stretching upwards, enabling a water sample of the whole vertical water column to pass through a No. 25 plankton net (200 meshes, the aperture of 64 microns), intercepting planktons on the net and a sample cup, collecting filtered matters in the sample cup into a self-prepared sample bottle through a switch, repeatedly washing the No. 25 plankton net with pure water, enabling the planktons intercepted on the net to flush into the sample cup, completely transferring into the self-prepared sample bottle, completing sampling of the vertical water column sample at a monitoring point, and multiplying the sampling volume by the depth of water of the No. 25 plankton net.
Example 2
Referring to the attached drawings 1-10, a plankton vertical water column sampling tool comprises a protective cylinder 1, wherein the protective cylinder 1 is made of a transparent glass cylindrical protective cylinder and is internally provided with a thermometer, the inner diameter of the protective cylinder 1 is 25.5cm, the upper part and the lower part of the protective cylinder 1 are both in an open shape, and a lifting assembly 2 is arranged on the outer side above the protective cylinder 1;
carry and draw subassembly 2 including setting up the fixed column 21 in the 1 outside of protective barrel, the axial trough 22 has been seted up on fixed column 21, the internal rotation of axial trough 22 is connected with lifting rod 25, fixed column 21 is located the top of axial trough 22 and has seted up bar groove 23, bar groove 23 runs through protective barrel 1's inner wall, bar groove 23 and axial trough 22 intercommunication, it is provided with dead lever 24 to slide in bar groove 23, sliding groove 26 has been seted up on lifting rod 25, sliding connection has slide bar 27 in the spout 26, slide bar 27's shape is L shape, slide bar 27's the other end offsets with dead lever 24's one end, the spout 26 is embedded to have spring 28, spring 28's one end fixed connection is on slide bar 27, spring 28's the other end is fixed on sliding groove 26's inner wall.
When the protective barrel 1 sinks into water, the lifting rod 25 of the lifting component 2 is rotatably arranged in the shaft groove 22 of the fixed column 21, so that the protective barrel is easy to shake in the sinking process;
in addition, the connecting rod does not shake, but the connecting part of the lifting rod 25 and the fixed column 21 is easy to shake.
In the application, after the lifting rod 25 is inserted into the shaft groove 22, when the lifting rod 25 needs to be fixed, only the sliding rod 27 needs to be moved along the sliding groove 26, so that the sliding rod 27 can be moved into the strip-shaped groove 23, the sliding rod 27 can be embedded into the strip-shaped groove 23, so that the lifting rod 25 is not easy to rotate, and the lifting rod 25 is in a vertical state, in addition, when the sliding rod 27 is moved, the sliding rod 27 can abut against the fixed rod 24, so that the fixed rod 24 is moved, and springs for driving the fixed rod 24 to reset are arranged on two sides in the fixed rod 24;
the sliding groove 26 is embedded with a spring 28, the arrangement of the spring 28 enables the sliding rod 27 to be conveniently reset, and when the sliding rod 27 slides out of the strip-shaped groove 23, the lifting rod 25 is convenient to rotate.
Current plankton sample thief, generally be exactly a filter screen structure that is the toper form, the shape is like catching the butterfly net, and connect the rope at the opening part of filter screen, then connect a handheld pole, during the use, handheld pole rocks about the aquatic, make the plankton enter into in the filter screen, then be vertical state, water evacuation in the filter screen, the water that contains the plankton that persists in making the sample bottle, after reacing the laboratory, open the valve under the sample bottle, sample the plankton in the sample bottle. However, the filter screen is easy to damage when being shaken in water in the process.
So install filter screen subassembly 3 in the inside of a protection section of thick bamboo 1, filter screen subassembly 3's lower extreme is connected with sample bottle 31 for deposit the sampling plankton, can play the effect of protection filter screen subassembly 3, improve filter screen subassembly 3's life greatly.
Filter screen subassembly 3 includes the solid fixed ring 32 of fixed mounting in protection section of thick bamboo 1 top, round fixed orifices 33 has evenly been seted up on solid fixed ring 32, through iron wire winding fixedly connected with filter screen 34 on the fixed orifices 33, the aperture of filter screen 34 is 63 microns, the shape of filter screen 34 is the toper, constant head tank 35 has been seted up in solid fixed ring 32's the outside, constant head tank 35 sets up the one side at dead lever 24, and dead lever 24 inserts in the constant head tank 35, dead lever 24 is used for fixing solid fixed ring 32, the below of filter screen 34 is the opening form setting, and there is sample bottle 31 through the clamp connection at filter screen 34 lower extreme opening part, sample bottle 31's lower extreme is provided with valve 36, the top of filter screen 34 is provided with the large granule filter screen.
During the use, filter screen subassembly 3 uses with the supporting cooperation of a protection section of thick bamboo 1, gu fixed ring 32 card is in the top of a protection section of thick bamboo 1, and filter screen 34 is fixed on the fixed orifices 33 of fixed ring 32, because filter screen subassembly 3 makes the port department of directly blocking a protection section of thick bamboo 1 top, at the in-process of submergence, in order to avoid droing of filter screen subassembly 3 as far as possible, it has constant head tank 35 to open in the side of fixed ring 32, when carrying pull rod 25 is in vertical state, slide bar 27 can press the removal of dead lever 24, make the one end of dead lever 24 can insert in constant head tank 35, pin fixed ring 32, prevent dropping of fixed ring 32, on the one hand can, make carrying pull rod 25 be in vertical state and prevent rocking, on the other hand can pin fixed ring 32.
The large granule filter screen of setting can filter the outside at filter screen 34 with large granule debris, prevents to enter into filter screen 34 in, the sample bottle 31 of setting is used for storing the plankton.
In order to make the sampling tool more stable when submerged in water, and can be submerged in a predetermined position.
The outside of the lower part of the protective cylinder 1 is provided with a fixed lug 4, the fixed lug 4 is provided with a threaded hole 41, the threaded hole 41 is internally threaded with a threaded rod 42, and the threaded rod 42 is fixedly connected with a balancing weight 43.
The balancing weight 43 that sets up can increase the weight of a protection section of thick bamboo 1, makes after submerging, can improve stability, is difficult to rock to can play the effect of protection filter screen subassembly 3, what need explain in addition, the quantity of balancing weight 43 can add different quantity as required.
Since the filter net 34 is relatively light, it is easy to float and rock after sinking into water, in order to reduce the rocking of the filter net 34;
a first hook 431 is arranged above the balancing weight 43, a second hook 432 is arranged below the sample bottle 31, and a tension spring 5 is connected between the first hook 431 and the second hook 432;
the extension spring 5 that sets up can be pulled between balancing weight 43 and the sample bottle 31, makes the sample bottle 31 be located the interior bottom of a protection section of thick bamboo 1 all the time, makes filter screen 34 be the toper setting, prevents to rock, influences going on of sampling.
One side of slide bar 27 is provided with wedge lug a271, and the slot 261 that has communicated with spout 26 is seted up to the pull rod 25 in being located spout 26, and it has inserted bar 6 to slide the grafting in slot 261, and one side of inserted bar 6 is provided with wedge lug b61, matches each other between wedge lug a271 and the wedge lug b61, and the top of inserted bar 6 is provided with presses cap 62.
In order to enable the sliding rod 27 to be inserted into the strip-shaped groove 23, the pressing cap 62 is pressed, the pressing cap 62 can press the inserting rod 6 to move downwards, and after the inserting rod 6 moves downwards, the wedge-shaped projection b61 on the inserting rod 6 can abut against the wedge-shaped projection a271, so that the sliding rod 27 can be driven to move, and the sliding rod 27 is inserted into the strip-shaped groove 23 to fix the lifting rod 25 and fix the filter screen assembly 3.
The working principle is as follows:
during the use, with the supporting cooperation use of filter screen subassembly 3 and a protection section of thick bamboo 1, gu fixed ring 32 blocks in the top of a protection section of thick bamboo 1, and filter screen 34 is fixed on fixed ring 32's fixed orifices 33, press cap 62 can press inserted bar 6 and move down, inserted bar 6 removes the back downwards, wedge lug b61 on the inserted bar 6 can support on wedge lug a271, thereby can drive the removal of slide bar 27, it is fixed with the lifting rod 25 and filter screen subassembly 3 to realize that slide bar 27 inserts in bar groove 23, because filter screen subassembly 3 makes the port department of direct card protection section of thick bamboo 1 top, in the in-process that sinks, in order to avoid droing of filter screen subassembly 3 as far as possible, open constant head tank 35 in the side of solid fixed ring 32, when lifting rod 25 is in vertical state, slide bar 27 can press the removal of dead lever 24, make the one end of dead lever 24 can insert in constant head tank 35, gu fixed ring 32 is locked, prevent solid fixed ring 32 from dropping, on the one hand can, make lifting rod 25 be in vertical state and prevent rocking, on the other hand can pin solid ring 32.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some technical features, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A plankton vertical water column sampling method is characterized by comprising the following specific steps:
preparation work: placing a balancing weight at the bottom of the protection cylinder, then installing a filter screen in the protection cylinder, fixing the sample bottle at the lower end of the filter screen, connecting a rope or a connecting rod above the protection cylinder, wherein the length of the rope or the connecting rod can be set to different lengths according to the depth to be measured;
carrying out launching operation: the protective cylinder is slowly and vertically immersed into water, and in the process of immersing into water, the rope needs to be slowly arranged below the protective cylinder, so that the protective cylinder can protect the filter screen;
lifting and pulling: slowly pulling the protection cylinder which is lowered to a proper position upwards, opening the invention below the sample bottle after the water level is pulled out, taking out the water in the sample bottle, and storing the water in the test tube for later use;
cleaning: the device is placed in water for cleaning, then dried in the sun and stored.
2. A sampling tool for carrying out the plankton vertical water column sampling method of claim 1, characterized in that: comprises a protective cylinder (1), wherein a lifting component (2) is arranged on the outer side above the protective cylinder (1);
carry and draw subassembly (2) including setting up fixed column (21) in protection cylinder (1) the outside, axial trough (22) have been seted up on fixed column (21), axial trough (22) internal rotation is connected with and carries pull rod (25), fixed column (21) are located the top of axial trough (22) and have been seted up and have been put bar groove (23), bar groove (23) run through the inner wall of protection cylinder (1), bar groove (23) and axial trough (22) intercommunication, it is provided with dead lever (24) to slide in bar groove (23), spout (26) have been seted up on carry pull rod (25), sliding connection has slide bar (27) in spout (26), the shape of slide bar (27) is L shape, the other end of slide bar (27) offsets with the one end of dead lever (24), spout (26) embedded spring (28), the one end fixed connection of spring (28) is on slide bar (27), the other end of spring (28) is connected with and fixes on the inner wall of spout (26), the internally mounted of protection cylinder (1) has filter screen subassembly (3), the lower extreme sample collection bottle (31) of depositing subassembly (3) are used for planktonic organisms sampling bottle (31).
3. The tool of claim 2, wherein: filter screen subassembly (3) are including fixed ring (32) of fixed mounting in protection section of thick bamboo (1) top, round fixed orifices (33) have evenly been seted up on fixed ring (32), be connected with filter screen (34) through iron wire winding fixedly on fixed orifices (33), the shape of filter screen (34) is the toper, constant head tank (35) have been seted up in the outside of fixed ring (32), constant head tank (35) set up in one side of dead lever (24), and in dead lever (24) inserted constant head tank (35), dead lever (24) are used for fixing fixed ring (32).
4. The tool of claim 3, wherein: the below of filter screen (34) is the opening form setting, and has sample bottle (31) at filter screen (34) lower extreme opening part through the clamp connection, the lower extreme of sample bottle (31) is provided with valve (36), the top of filter screen (34) is provided with the large granule filter screen.
5. The tool of claim 2, wherein: the protection device is characterized in that a fixing lug (4) is arranged on the outer side of the lower portion of the protection barrel (1), a threaded hole (41) is formed in the fixing lug (4), a threaded rod (42) is connected to the threaded hole (41) in an internal thread mode, and a balancing weight (43) is fixedly connected to the threaded rod (42).
6. The tool of claim 5, wherein: the top of balancing weight (43) is provided with first couple (431), the below of sample bottle (31) is provided with second couple (432), be connected with extension spring (5) between first couple (431) and second couple (432).
7. The tool of claim 4, wherein: the aperture of the filter screen (34) is 63 microns.
8. The tool of claim 2, wherein: one side of the sliding rod (27) is provided with a wedge-shaped convex block a (271), the lifting rod (25) is positioned in the sliding groove (26) and is provided with a slot (261) communicated with the sliding groove (26), the slot (261) is internally inserted with an inserting rod (6) in a sliding and inserting mode, one side of the inserting rod (6) is provided with a wedge-shaped convex block b (61), the wedge-shaped convex block a (271) and the wedge-shaped convex block b (61) are matched with each other, and a pressing cap (62) is arranged above the inserting rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119607.2A CN115493885A (en) | 2022-09-15 | 2022-09-15 | Method and tool for sampling plankton vertical water column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211119607.2A CN115493885A (en) | 2022-09-15 | 2022-09-15 | Method and tool for sampling plankton vertical water column |
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| Publication Number | Publication Date |
|---|---|
| CN115493885A true CN115493885A (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211119607.2A Pending CN115493885A (en) | 2022-09-15 | 2022-09-15 | Method and tool for sampling plankton vertical water column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117191538A (en) * | 2023-11-07 | 2023-12-08 | 山东锆石智能设备有限公司 | Hydraulic engineering surveys with collection of plankton and strains device |
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2022
- 2022-09-15 CN CN202211119607.2A patent/CN115493885A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117191538A (en) * | 2023-11-07 | 2023-12-08 | 山东锆石智能设备有限公司 | Hydraulic engineering surveys with collection of plankton and strains device |
| CN117191538B (en) * | 2023-11-07 | 2024-02-02 | 山东锆石智能设备有限公司 | Hydraulic engineering surveys with collection of plankton and strains device |
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