CN111855266B - Sediment sampler - Google Patents
Sediment sampler Download PDFInfo
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- CN111855266B CN111855266B CN202010653147.6A CN202010653147A CN111855266B CN 111855266 B CN111855266 B CN 111855266B CN 202010653147 A CN202010653147 A CN 202010653147A CN 111855266 B CN111855266 B CN 111855266B
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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
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
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Abstract
The invention discloses a sediment sampler, which comprises a handle, a connecting plate, a cam heavy hammer, a sampling rope, a locking mechanism, a piston, a sampling tube, a collecting cavity, a connecting rod and a sealing shovel, wherein the connecting plate is arranged on the connecting plate; the cam heavy hammer is hung at the lower end of the sampling rope; the handle is connected with the collecting cavity through the connecting plate and the connecting rod; the collecting cavity is arranged at the middle lower part of the sampling tube; a locking mechanism is arranged between the cam heavy hammer and the sampling tube and is connected with a sealing shovel at the lower port of the collecting cavity; before use, the sampling rope is hung on the cam heavy hammer without touching the locking mechanism, and the sealing shovel opens the lower port of the collection cavity; when the sediment sampler is put down to sink into sediment in a water area, the sediment enters the sampling tube; when the sampling rope starts to be loosened and the cam heavy hammer falls down, the locking mechanism is started to enable the sealing shovel to close the lower port of the collection cavity, and sampling is completed. The device has the advantages of simple structure, convenient operation and high sampling success rate, and is suitable for carrying out auxiliary acquisition operation on each chemical component of the layered analysis sediment.
Description
Technical Field
The present invention relates to hydrologic and water environment monitoring technology and apparatus, and more particularly to a sediment sampler.
Background
Clays, sediments, organics and other minerals in river and lake waters are deposited on the bottom of the body of water through long term physical, chemical and biological effects and water transport, forming sediments. These deposits interact with water as part of the body of water and also reflect migration, conversion, etc. of the body of water. Therefore, whether the historical change of the water body is studied or the current situation is evaluated, the grain size, the layered structure and the chemical composition of the sediment are important indexes.
Commonly used water sediment samplers are generally divided into two types: a grasping type and a column type. The grabbing sampler is simple in structure, but has great interference to the sediment, and the original structure of the sediment is easily damaged, so that a complete section cannot be presented, and layering analysis is not facilitated. Thus, the chemical composition of each layer is only suitable for comprehensive sampling studies of sediment samples. Column samplers typically insert a sampling tube into the sediment, then lift the sampling tube, remove the sediment from the body of water by hydrostatic pressure, and then push the sediment out of the piston. The column sampler has little disturbance to the sediment, and is convenient for researching the layering of the sediment. Therefore, column samplers are commonly used in water environmental or hydrologic research to sample water deposits.
However, existing column samplers typically push the sediment sample from the sampling tube through the plunger after sampling. This process is laborious and the cross-sectional structure of the sample is disturbed. Thus, a new sediment sampler is needed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to overcome the defects in the prior art, and provides a sediment sampler which has the advantages of simple structure, convenient operation and high sampling success rate, and is suitable for carrying out auxiliary collection operation on each chemical component of sediment by layering analysis.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
a sediment sampler comprises a handle, a connecting plate, a cam weight, a sampling rope, a locking mechanism, a piston, a sampling tube, a collecting cavity, a connecting rod and a sealing shovel; the cam heavy hammer is hung at the lower end of the sampling rope, so that the cam heavy hammer is positioned at the upper part of the sediment sampler; the handle is connected with the collecting cavity through the connecting plate and the connecting rod, so that the handle is fixedly connected with the lower part of the sediment sampler; the collecting cavity is arranged at the middle lower part of the sampling tube; a locking mechanism is arranged between the cam heavy hammer and the sampling tube and is connected with a sealing shovel at the lower port of the collecting cavity; before the sediment sampler is used, a cam heavy hammer is hung on a sampling rope without touching a locking mechanism, and a sealing shovel opens a lower port of the collection cavity; when the sediment sampler is put down to sink into sediment in a water area, the sediment enters a sampling tube; when the sampling rope starts to be loosened and the cam heavy hammer falls down, the locking mechanism is started to enable the sealing shovel to close the lower port of the collection cavity, and the sampling work is completed.
Preferably, the handles are welded on the connecting plates at two sides, and the connecting plates at two sides are in a parallel state; the center of the handle is provided with a cylindrical rope sleeving hole; the cam heavy hammer is a cylinder, the upper end of the heavy hammer is provided with a rope loop, and the rope loop is sleeved with a sampling rope; the length of the sampling rope is determined according to the depth of water and the depth of bottom mud, and the upper end of the sampling rope passes through a rope sleeving hole of the handle; the cam sealing cover is circular, and the cam sealing cover is sequentially provided with: a cam upper cover, a cam middle cover and a cam lower cover; the three cam sealing covers are concentric, coaxial and parallel, and the outer diameters are identical; the inner diameter and the thickness of the cam middle sealing cover are equal, the inner diameter of the cam middle sealing cover is larger than the inner diameter of the cam upper sealing cover, and the thickness of the cam upper sealing cover is twice as large as that of the cam middle sealing cover; the three cam sealing caps are vertically welded and fixed through three sealing cap connecting rods, and the lower ends of the sealing cap connecting rods are vertically welded on the upper sealing caps of the pistons; the lower end of the upper sealing cover of the cam is vertically welded with a heavy hammer sleeve; the heavy hammer sleeve is a circular cylinder and sequentially penetrates through the middle cam sealing cover and the lower cam sealing cover; the lower end of the heavy hammer sleeve is flush with the upper end of the inclined connecting rod in the locking mechanism; the cam heavy hammer is arranged in the heavy hammer sleeve; the inner diameter of the cam sleeve is larger than the outer diameter of the cam heavy hammer; the outer diameter of the cam heavy hammer is larger than the inner diameter of the upper cover of the cam; the outer diameter of the cam heavy hammer is smaller than the inner diameter of the cover in the cam.
Preferably, the locking mechanism is formed by connecting an inclined connecting rod and a horizontal connecting rod, the joint of the inclined connecting rod and the horizontal connecting rod can move horizontally, and the inclined connecting rod and the horizontal connecting rod can only move in the horizontal direction; the middle part of the inclined connecting rod is provided with a cuboid hole, and the hole is connected with a square round-corner steel plate; the tail end of the round-angle steel plate is welded into the upper blank cap connecting rod; when the sampler is in an open state, the horizontal connecting rod is inserted into the upper blank cap connecting rod; the middle end of the horizontal connecting rod is provided with a detachable connecting screw cap, and a spring is arranged between the horizontal connecting rod at the tail end of the screw cap and the upper cover connecting rod.
Preferably, the piston is welded with the upper cover connecting rod vertically; the upper end of the upper blank cap connecting rod always passes through the upper blank cap of the piston, and the connecting part can move; a spring is sleeved between the upper cover connecting rod and the upper cover of the piston, and the radius of the spring is larger than that of the upper cover of the piston; the lower end of the piston connecting rod is always connected with the piston, and the length of the piston connecting rod is smaller than the distance between the upper piston cover and the lower piston cover; in the open state, the upper end passes through the piston upper cover and is vertically movable.
Preferably, the sampling tube is a tube made of a transparent material that can be cut; the diameter of the sampling tube is the same as that of the piston; the center of the lower seal cap of the piston is provided with a through hole with the size of the piston, and a threaded port is arranged in the through hole, so that the sampling tube is convenient to fix; the lower piston blank cap is detachably connected with the sampling tube through a threaded port; the end of the piston is sleeved with a piston gasket, and when the sampler is in a closed state, the piston, the lower piston cover and the sampling tube are tightly combined; the sampling tube is sleeved with a sampling tube fixing plate; the size indexes of the sampling tube fixing plate are completely the same as those of the upper blank cap of the piston; the left side and the right side of the sampling tube fixing plate are respectively welded with the tail ends of the connecting plates; welded with the guide block.
Preferably, the lower middle part of the sampling tube is sleeved with a sampling cavity; the upper end and the lower end of the collecting cavity are in the same truncated cone shape, and the middle part is a circular cylinder; the radius of the upper bottom of the round table of the collecting cavity is slightly larger than that of the sampling tube; the collecting cavity is welded with the connecting plate through a connecting rod; the end of the collection cavity is 5cm longer than the end of the sampling tube.
Preferably, a sleeve rope is arranged at the upper end of the triggering rod of the locking mechanism; when the sampler is in an open state, the sleeve rope is sleeved at the upper end of the piston connecting rod; the middle section of the trigger rod is sleeved with a spring, the tail end of the spring is welded with a guide block, the guide block is welded with the collecting cavity, and the guide block is movably connected with the trigger rod; the tail end of the spring is fixed on the pre-tightening nut; the lower end of the trigger rod is welded with a sealing shovel which is connected with the guide rod, and the joint can move; the guide rod is parallel to the lower round table part of the collecting cavity, a welding guide pipe is sleeved in the middle of the guide rod, and one side of the welding guide pipe is welded on the collecting cavity; when the sampler is in a closed state, the sealing shovel can downwards seal the collection cavity.
Compared with the prior art, the invention has the following obvious prominent substantive features and obvious advantages:
1. the device has simple structure, convenient operation and high sampling success rate, and is suitable for carrying out auxiliary acquisition operation on each chemical component of the layered analysis sediment;
2. the device has compact structure, convenient transportation and carrying and good adaptability.
Drawings
Fig. 1 is a schematic view of the overall open state of the sediment sampler.
Fig. 2 is a schematic diagram of the overall closure state of the sediment sampler.
FIG. 3 is a schematic view of the cam weight in the open position of the sediment sampler.
FIG. 4 is a schematic view of the cam weight in the closed state of the sediment sampler.
FIG. 5 is a schematic view of a sediment sampler locking mechanism.
Fig. 6 is a perspective view of a sediment sampler locking mechanism.
Fig. 7 is a schematic view of the piston system in an open state of the sediment sampler.
Fig. 8 is a schematic view of the piston system in a closed state of the sediment sampler.
Fig. 9 is a schematic view of the trigger lever in an open state of the sediment sampler.
Fig. 10 is a schematic view of the trigger lever in a closed state of the sediment sampler.
FIG. 11 is a schematic view of a sealing shovel in an open state of a sediment sampler.
FIG. 12 is a schematic view of a sealing shovel in a closed state of the sediment sampler.
Detailed Description
The foregoing aspects are further described in conjunction with specific embodiments, and the following detailed description of preferred embodiments of the present invention is provided:
embodiment one:
in this embodiment, referring to fig. 1-2, a sediment sampler comprises a handle 1, a connecting plate 2, a cam weight 3, a sampling rope 4, a locking mechanism, a piston 14, a sampling tube 18, a collecting cavity 19, a connecting rod 20 and a sealing shovel 27; the cam heavy hammer 3 is hung at the lower end of the sampling rope 4, so that the cam heavy hammer 3 is positioned at the upper part of the sediment sampler; the handle 1 is connected with the collecting cavity 19 through the connecting plate 2 and the connecting rod 20, so that the handle 1 is fixedly connected with the lower part of the sediment sampler; the collecting cavity 19 is arranged at the middle lower part of the sampling tube 18; a locking mechanism is arranged between the cam weight 3 and the sampling tube 18 and is connected with a sealing shovel 27 at the lower port of the collecting cavity 19; before the sediment sampler is used, the sampling rope 4 is hung on the cam heavy hammer 3 without touching the locking mechanism, and the sealing shovel 27 opens the lower port of the collecting cavity 19; when the sediment sampler is lowered into the sediment in the water, the sediment enters the sampling tube 18; when the sampling rope 4 starts to be loosened and the cam weight 3 falls down, the locking mechanism is started to enable the sealing shovel 27 to close the lower port of the collecting cavity 19, and the sampling work is completed.
Embodiment two:
this embodiment is substantially the same as the first embodiment, and is characterized in that:
in this embodiment, referring to fig. 1-12, the handle 1 is welded on two connecting plates 2 at two sides, and the connecting plates at two sides are in parallel; the center of the handle is provided with a cylindrical rope sleeving hole; the cam heavy hammer 3 is a cylinder, the upper end of the heavy hammer is provided with a rope loop, and the rope loop is sleeved with a sampling rope 4; the length of the sampling rope 4 is determined according to the depth of water and the depth of bottom mud, and the upper end of the sampling rope passes through a rope sleeving hole of the handle; the cam sealing cover 5 is annular, and is sequentially from top to bottom: a cam upper cover, a cam middle cover and a cam lower cover; the three cam sealing covers are concentric, coaxial and parallel, and the outer diameters are identical; the inner diameter and the thickness of the cam middle sealing cover are equal, the inner diameter of the cam middle sealing cover is larger than the inner diameter of the cam upper sealing cover, and the thickness of the cam upper sealing cover is twice as large as that of the cam middle sealing cover; the three cam sealing caps are vertically welded and fixed through three sealing cap connecting rods 6, and the lower ends of the sealing cap connecting rods are vertically welded on the upper piston blank caps 15; the lower end of the upper sealing cover of the cam is vertically welded with a heavy hammer sleeve 7; the heavy hammer sleeve 7 is a circular cylinder and sequentially penetrates through the middle cam sealing cover and the lower cam sealing cover; the lower end of the heavy hammer sleeve 7 is flush with the upper end of the inclined connecting rod 8 in the locking mechanism; the cam heavy hammer 3 is arranged in the heavy hammer sleeve 7; the inner diameter of the cam sleeve 7 is larger than the outer diameter of the cam heavy hammer 3; the outer diameter of the cam heavy hammer 3 is larger than the inner diameter of the upper cover of the cam; the outer diameter of the cam weight 3 is smaller than the inner diameter of the cover in the cam.
In this embodiment, the locking mechanism is formed by connecting an inclined connecting rod 8 and a horizontal connecting rod 9, the connection part of the inclined connecting rod 8 and the horizontal connecting rod 9 can move horizontally, and the inclined connecting rod 8 and the horizontal connecting rod 9 can only move horizontally; the middle part of the inclined connecting rod is provided with a cuboid hole, and the square round-corner steel plate 10 is connected in the hole; the tail end of the round-angle steel plate 10 is welded into the upper blank cap connecting rod 13; when the sampler is in an open state, the horizontal connecting rod 9 is inserted into the upper blank cap connecting rod 13; the middle end of the horizontal connecting rod 9 is provided with a detachable connecting screw cap 11, and a spring is arranged between the horizontal connecting rod at the tail end of the screw cap 11 and the upper cover connecting rod.
In this embodiment, the piston 14 is welded to the upper cover link 13 vertically; the upper end of the upper blank cap connecting rod 13 always passes through the upper blank cap 15 of the piston, and the connecting part can move; a spring 12 is sleeved between the upper cover connecting rod 13 and the upper cover 15, and the radius of the spring 12 is larger than that of the upper cover 15 of the piston; the lower end of the piston connecting rod 17 is always connected with the piston 14, and the length of the piston connecting rod is smaller than the distance between the piston upper blank cap 15 and the piston lower blank cap 16; in the open state, the upper end passes through the piston upper cover 15 and is vertically movable.
In this embodiment, the sampling tube 18 is a tube made of a transparent material that can be cut; the sampling tube 18 is the same diameter as the piston 14; the center of the piston lower blank cap 16 is provided with a through hole with the size of the piston, and a threaded port is arranged in the through hole, so that the sampling tube is convenient to fix; the piston lower cover 16 is detachably connected with the sampling tube 18 through a threaded port; the end of the piston 14 is sleeved with a piston gasket, and when the sampler is in a closed state, the piston 14, the piston lower blank cap 16 and the sampling tube 18 are tightly combined;
the sampling tube 18 is sleeved with a sampling tube fixing plate 21; the size indexes of the sampling tube fixing plate 21 are completely the same as those of the piston upper blank cap 15; the left side and the right side of the sampling tube fixing plate 21 are respectively welded with the tail end of the connecting plate 2; welded to the guide block 23.
In the embodiment, the lower middle part of the sampling tube 18 is sleeved with a sampling cavity 19; the upper end and the lower end of the collecting cavity 19 are in the same truncated cone shape, and the middle part is a circular cylinder; the radius of the upper bottom of the round table of the collecting cavity 19 is slightly larger than that of the sampling tube; the collecting cavity 19 is welded with the connecting plate 2 through a connecting rod 20; the end of the collection cavity is 5cm longer than the end of the sampling tube.
In this embodiment, a sleeve rope is arranged at the upper end of the trigger rod 22 of the locking mechanism; when the sampler is in an open state, the rope is sleeved at the upper end of the piston connecting rod 17; the middle section of the trigger rod 22 is sleeved with a spring 12, the tail end of the spring is welded with a guide block 23, the guide block 23 is welded with the collecting cavity 19, and the guide block 23 is movably connected with the trigger rod 22; the end of the spring 12 is fixed to a pre-tightening nut 24; the lower end of the trigger rod 22 is welded with a sealing shovel 27, the sealing shovel 27 is connected with the guide rod 25, and the connecting part can move; the guide rod 25 is parallel to the lower round table part of the collecting cavity 19, a welding guide pipe 26 is sleeved in the middle of the guide rod, and one side of the welding guide pipe 26 is welded on the collecting cavity 19; when the sampler is in the closed state, the sealing shovel 27 seals the collection chamber 19 downwards.
Before use, the operator holds the upper end of the sampling cord 4 while ensuring that the sampler is in an open state, as shown in fig. 1: the top surface of the cam weight 3 contacts with the cam upper sealing cover 5; the locking mechanism is in a closed state; the piston 14 and the piston connecting rod are positioned between the upper piston cover and the lower piston cover; the sleeve rope of the trigger rod 22 is sleeved on the piston connecting rod 17; the sealing shovel 27 does not seal the collection chamber end.
In use, an operator grips the sampling rope 4 and drops the sampler into the body of water. Before the sampler is not contacted with the bottom mud, the sampling rope 4 is always kept straight. After sinking into the substrate sludge a distance, the sampling string 4 starts to bend slightly, which means that the sampler has reached its deepest point. At this time, the sampling rope 4 is loosened, and the cam weight 3 vertically falls down along with the weight sleeve 7 until touching the inclined connecting rod 8 because the pulling force of the sampling rope 4 in the vertical direction of the cam weight 3 disappears. Under the action of the spring, the inclined connecting rod 8 and the horizontal connecting rod 9 move backwards under the action of the tension of the spring 12 at the moment by utilizing the crank sliding block principle, and the locking mechanism is opened.
When the locking mechanism is opened, the piston 14 and the piston connecting rod 17 can drop vertically under the action of gravity until the bottom end of the piston 14 completely seals the piston lower cover 16 and the sampling tube 18.
When the piston connecting rod 17 falls down, the sleeve rope on the trigger rod 22 also falls off, and the trigger rod 22 is triggered. The trigger lever 22 moves vertically downward by the downward pulling force of the spring 12 on the trigger lever and the weight of the trigger lever 22 itself. The sealing shovel 27 to which the trigger lever 22 is attached also moves downward at this time. When the lower end of the trigger lever 22 moves to be level with the end of the collection chamber 19, the collection chamber 19 is sealed by the sealing shovel 27, and the sampling is finished.
The embodiment has simple structure, convenient operation and high sampling success rate, and is beneficial to layering analysis of each chemical component of the sediment.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above, and various changes, modifications, substitutions, combinations or simplifications made under the spirit and principles of the technical solution of the present invention can be made according to the purpose of the present invention, and all the changes, modifications, substitutions, combinations or simplifications should be equivalent to the substitution, so long as the purpose of the present invention is met, and all the changes are within the scope of the present invention without departing from the technical principles and the inventive concept of the present invention.
Claims (4)
1. The sediment sampler comprises a handle (1), a connecting plate (2), a cam weight (3), a sampling rope (4), a locking mechanism, a piston (14), a sampling tube (18), a collection cavity (19), a connecting rod (20) and a sealing shovel (27); the method is characterized in that:
the cam heavy hammer (3) is hung at the lower end of the sampling rope (4), so that the cam heavy hammer (3) is positioned at the upper part of the sediment sampler; the handle (1) is connected with the collecting cavity (19) through the connecting plate (2) and the connecting rod (20), so that the handle (1) is fixedly connected with the lower part of the sediment sampler; the collecting cavity (19) is arranged at the middle lower part of the sampling tube (18);
a locking mechanism is arranged between the cam heavy hammer (3) and the sampling tube (18), and the locking mechanism is connected with a sealing shovel (27) at the lower port of the collecting cavity (19);
before the sediment sampler is used, a cam heavy hammer (3) is hung on a sampling rope (4) without touching a locking mechanism, and a sealing shovel (27) opens the lower port of the collecting cavity (19); when the sediment sampler is put down, the sediment sampler sinks into sediment in a water area, and the sediment enters a sampling pipe (18); when the sampling rope (4) starts to be loosened and the cam heavy hammer (3) falls down, the locking mechanism is started to enable the sealing shovel (27) to close the lower port of the collecting cavity (19), and the sampling work is completed; the locking mechanism is formed by connecting an inclined connecting rod (8) and a horizontal connecting rod (9), the joint of the inclined connecting rod (8) and the horizontal connecting rod (9) can move horizontally, and the inclined connecting rod (8) and the horizontal connecting rod (9) can only move in the horizontal direction; the middle part of the inclined connecting rod is provided with a cuboid hole, and the square round-corner steel plate (10) is connected in the hole; the tail end of the round-angle steel plate (10) is welded into the upper blank cap connecting rod (13); when the sampler is in an open state, the horizontal connecting rod (9) is inserted into the upper blank cap connecting rod (13); a detachable connecting screw cap (11) is arranged at the middle end of the horizontal connecting rod (9), and a spring is arranged between the horizontal connecting rod at the tail end of the screw cap (11) and the upper cover connecting rod;
the piston (14) is vertically welded with the upper blank cap connecting rod (13); the upper end of the upper blank cap connecting rod (13) always passes through the upper blank cap (15) and the connecting part can move; a spring (12) is sleeved between the upper blank cap connecting rod (13) and the upper piston blank cap (15), and the radius of the spring (12) is larger than that of the upper piston blank cap (15);
the lower end of the piston connecting rod (17) is always connected with the piston (14), and the length of the piston connecting rod is smaller than the distance between the upper piston blank cap (15) and the lower piston blank cap (16); in the open state, the upper end of the piston connecting rod (17) passes through the upper piston cover (15) and can move vertically;
the upper end of a trigger rod (22) of the locking mechanism is provided with a sleeve rope; when the sampler is in an open state, the sleeve rope is sleeved at the upper end of the piston connecting rod (17); the middle section of the trigger rod (22) is sleeved with a spring (12), and the tail end of the spring is welded with a guide block (23); a sampling tube fixing plate (21) is sleeved on the sampling tube (18), and the left side and the right side of the sampling tube fixing plate (21) are respectively welded with the tail ends of the connecting plates (2); the sampling tube fixing plate (21) is welded with the guide block (23);
is movably connected with the trigger lever (22); the tail end of the spring (12) is fixed on the pre-tightening nut (24); the lower end of the trigger rod (22) is welded with a sealing shovel (27), the sealing shovel (27) is connected with the guide rod (25), and the connecting part can move; the guide rod (25) is parallel to the lower round platform part of the collecting cavity (19), a welding guide pipe (26) is sleeved in the middle of the guide rod, and one side of the welding guide pipe (26) is welded on the collecting cavity (19); when the sampler is in a closed state, the sealing shovel (27) can move downwards to seal the collecting cavity (19).
2. The sediment sampler according to claim 1, characterized in that: the handles (1) are welded on the connecting plates (2) at the two sides, and the connecting plates at the two sides are in a parallel state; the center of the handle is provided with a cylindrical rope sleeving hole;
the cam heavy hammer (3) is a cylinder, the upper end of the heavy hammer is provided with a rope loop, and the rope loop is sleeved with a sampling rope (4); the length of the sampling rope (4) is determined according to the depth of water and the depth of bottom mud, and the upper end of the sampling rope passes through a rope sleeving hole of the handle;
the cam sealing cover (5) is in a circular ring shape, and comprises the following components in sequence from top to bottom:
a cam upper cover, a cam middle cover and a cam lower cover; the three cam sealing covers are concentric, coaxial and parallel, and the outer diameters are identical; the inner diameter and the thickness of the cam middle sealing cover are equal, the inner diameter of the cam middle sealing cover is larger than the inner diameter of the cam upper sealing cover, and the thickness of the cam upper sealing cover is twice as large as that of the cam middle sealing cover; the three cam sealing covers are vertically welded and fixed through three sealing cover connecting rods (6), and the lower ends of the sealing cover connecting rods are vertically welded on the upper piston blank cap (15); the lower end of the upper sealing cover of the cam is vertically welded with a heavy hammer sleeve (7); the heavy hammer sleeve (7) is a circular cylinder and sequentially penetrates through the middle cam sealing cover and the lower cam sealing cover; the lower end of the heavy hammer sleeve (7) is flush with the upper end of the inclined connecting rod (8) in the locking mechanism; the cam heavy hammer (3) is arranged in the heavy hammer sleeve (7); the inner diameter of the heavy hammer sleeve (7) is larger than the outer diameter of the cam heavy hammer (3); the outer diameter of the cam heavy hammer (3) is larger than the inner diameter of the upper cover of the cam; the outer diameter of the cam heavy hammer (3) is smaller than the inner diameter of the cover in the cam.
3. The sediment sampler according to claim 1, characterized in that: the sampling tube (18) is a tube and is made of a transparent material which can be cut; the diameter of the sampling tube (18) is the same as that of the piston (14); the center of the piston lower blank cap (16) is provided with a through hole with the size of the piston, and a threaded port is arranged in the through hole, so that the sampling tube is convenient to fix; the piston lower blank cap (16) is detachably connected with the sampling tube (18) through a threaded port; the tail end of the piston (14) is sleeved with a piston gasket, and when the sampler is in a closed state, the piston (14), a piston lower blank cap (16) and a sampling tube (18) are tightly combined;
a sampling tube fixing plate (21) is sleeved on the sampling tube (18); each size index of the sampling tube fixing plate (21) is completely the same as that of the upper piston blank cap (15); the left side and the right side of the sampling tube fixing plate (21) are respectively welded with the tail ends of the connecting plates (2); welded with the guide block (23).
4. The sediment sampler according to claim 1, characterized in that: the lower middle part of the sampling tube (18) is sleeved with a sampling cavity (19); the upper end and the lower end of the collecting cavity (19) are in the same truncated cone shape, and the middle part is a circular cylinder; the radius of the upper bottom of the round table of the collecting cavity (19) is slightly larger than that of the sampling tube; the collecting cavity (19) is welded with the connecting plate (2) through a connecting rod (20); the end of the collection cavity is 5cm longer than the end of the sampling tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010653147.6A CN111855266B (en) | 2020-07-08 | 2020-07-08 | Sediment sampler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010653147.6A CN111855266B (en) | 2020-07-08 | 2020-07-08 | Sediment sampler |
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| CN111855266A CN111855266A (en) | 2020-10-30 |
| CN111855266B true CN111855266B (en) | 2023-05-16 |
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| CN202010653147.6A Active CN111855266B (en) | 2020-07-08 | 2020-07-08 | Sediment sampler |
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| CN115356160B (en) * | 2022-08-17 | 2023-04-11 | 生态环境部南京环境科学研究所 | Water body sediment collecting device for polluted water body environment analysis |
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