CN109163938A - A kind of ocean engineering seabed sludge sampler - Google Patents
A kind of ocean engineering seabed sludge sampler Download PDFInfo
- Publication number
- CN109163938A CN109163938A CN201811207450.2A CN201811207450A CN109163938A CN 109163938 A CN109163938 A CN 109163938A CN 201811207450 A CN201811207450 A CN 201811207450A CN 109163938 A CN109163938 A CN 109163938A
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- wall
- cylinder
- welded
- mud
- bottom end
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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
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- 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
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of ocean engineering seabed sludge samplers, including cylinder, the cross-section structure of the cylinder bottom end is infundibulate, there are four the slotting ground needles of equidistant annular spread for outer wall welding of the cylinder close to bottom end, and the plan structure for inserting ground needle is circle, the bottom end outer wall center of the cylinder is provided with circular hole, and the inner wall of circular hole is welded with mud guiding tube, the bottom end of the mud guiding tube is threaded with enters mud pipe, and the bottom end of enters mud pipe is welded with filter cover, the bottom outer wall of the filter cover be provided with equidistant annular spread into mud hole, the side wall of the enters mud pipe successively opens the inclined hole of equidistant annular spread from top to bottom, the inner wall of the inclined hole is welded with the inclined tube tilted down, and the side view structure of inclined tube is right-angled trapezium.The present invention is a kind of device for being sampled in ocean engineering to bottom silt, and device is worked using the pressure of seawater, and energy conservation and environmental protection improves the practicability of device.
Description
Technical field
It is sampled and is filled with seabed sludge the present invention relates to sludge sampler technical field more particularly to a kind of ocean engineering
It sets.
Background technique
In the research process of ocean engineering, need to carry out composition Study to the mud in seabed, and containing more in mud
Microorganism, facilitate the differentiation that researcher is better understood by ocean, but since seawater is deeper, the pressure of seawater is larger,
Researcher slips into submarine sampling and has certain risk, so need to be sampled by sampler.
Through retrieving, China Patent No. is the patent of 105908692 B of CN, discloses one kind and takes mud device, including sampling
Bucket, sample bucket are two pieces of left and right, are fastened by hasp, fixing lug boss at the top reinforcement part of sample bucket, and through-hole is processed at boss；
Fixed connecting rod at cross bar, the lower part of connecting rod pass through through-hole and are fixed with locking nut.The lower part reinforcement part processing side of sample bucket
The both ends processing four directions in hole, shaft is matched with square hole, and two panels dodge gate is installed in shaft, installs light barrier strip on dodge gate；In work
The closed position installation door locating ring of dynamic door.Above-mentioned patent exists following insufficient: needing people to slip into seabed just with device can make
With cannot be sampled, be not convenient to use using seawater pressure, therefore, for deficiency among the above, propose a kind of ocean engineering
With seabed sludge sampler.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of ocean engineering seabed proposed
Sludge sampler.
To achieve the goals above, present invention employs following technical solutions:
A kind of ocean engineering seabed sludge sampler, including cylinder, the cross-section structure of the cylinder bottom end are infundibulate, institute
Stating outer wall welding of the cylinder close to bottom end, there are four the slotting ground needles of equidistant annular spread, and the plan structure for inserting ground needle is circle
Shape, the bottom end outer wall center of the cylinder is provided with circular hole, and the inner wall of circular hole is welded with mud guiding tube, the bottom of the mud guiding tube
End is threaded with enters mud pipe, and the bottom end of enters mud pipe is welded with filter cover, and the bottom outer wall of the filter cover is provided with equidistant annular
Distribution into mud hole, the side wall of the enters mud pipe successively opens the inclined hole of equidistant annular spread from top to bottom, the inclined hole
Inner wall is welded with the inclined tube tilted down, and the side view structure of inclined tube is right-angled trapezium, and the top exterior walls of the inclined tube are welded
There is top, and coming directly towards is hemispherical dome structure, sidewall weld of the cylinder close to bottom end has the connection strap of equidistant annular spread,
And the bottom end of connection strap is welded with line fastening ring, bolt has lanyard in the line fastening ring, and the bottom end bolt of the lanyard has weight top,
And the edge lines of weight top side view structure are streamlined.
As the present invention further scheme: the bottom outer wall of the cylinder opens that there are four the installations equidistantly distributed
Hole, and the inner wall of four mounting holes is equipped with hydraulic devices.
As further scheme of the invention: the hydraulic devices include the standpipe placed vertically, and standpipe is welded on
The inner wall of mounting hole, the bottom end of standpipe are welded with flaring bucket, and the side inner wall of standpipe is welded with fixed link, outside the side of fixed link
Wall bolt has the first connecting rope, and the top bolt of the first connecting rope has the first pipe close, and the first pipe close is rabbeted on the top of standpipe, the
The top exterior walls of one pipe close are bonded with pipe lid.
As further scheme of the invention: inner wall of the cylinder close to bottom end is welded with bottomless receipts mud cylinder, and
Receive the center that mud cylinder is located at cylinder.
As further scheme of the invention: the receipts mud cylinder is embedded to be connected to plectane, and the bottom outer wall bonding of plectane
There is rubber pad, the specification of rubber pad is adapted with the specification for receiving mud cylinder.
As further scheme of the invention: the top exterior walls center for receiving mud cylinder is provided with first through hole, and
Cylinder is embedded to be connected to kickboard, and the bottom outer wall of kickboard is bonded with the foam floating ball of equidistant annular spread, and foam floating ball is hemisphere
Shape structure, the top exterior walls center of kickboard are provided with the second through-hole, the same liter are plugged in the second through-hole and first through hole
Bar, the bottom end of rising stem are welded on the top exterior walls center of plectane.
As further scheme of the invention: the bottom outer wall center of the plectane is welded with pull rod, and pull rod
Bottom end be bolted plunger, plunger is plugged in mud guiding tube.
As the present invention further scheme: the top of the rising stem is welded with baffle, and the bottom outer wall of baffle with
The top exterior walls of kickboard are bonded.
As further scheme of the invention: the side wall of the cylinder opens the draining there are four equidistant annular spread
Hole, and the inner wall of four drainage holes is welded with drainpipe.
As further scheme of the invention: being plugged with the second pipe close, and four second in four drainpipes
The side outer wall center bolt of pipe close has the second connecting rope, and the top bolt of four the second connecting ropes has hanging ring, four extensions
Circle is welded on the outer wall of cylinder.
The invention has the benefit that
1. being the setting of funnel shaped cylinder by fairshaped weight top and bottom end, can subtract during device falls
The resistance that small device itself is subject to, and weight top is located at the bottom of cylinder, can stablize the center of gravity of cylinder, makes cylinder faster
Seabed is sunk to, it will convenient for staff according to the drift direction of seawater in conjunction with the setting of the line fastening ring of equidistant annular spread
Weight top is fastened in the position contrary with drifting about, and then changes the center of gravity orientation of device, to allow device to fall in the seawater
Balance is kept in the process, in conjunction with the setting of slotting ground needle, when falling on seabed under device, inserts the mud that ground needle can be inserted in seabed
It is interior, and then whole device is allowed to keep standing without toppling over, so as to subsequent suction mud；
2. may be implemented to collect mud, and combine kickboard, the first pipe close by the setting for receiving mud cylinder, rising stem, plectane, rubber pad
With the setting of standpipe, during device falls, seawater enters in standpipe from flaring bucket, to the first pipe close in standpipe
There is a upward active force, and with the whereabouts of device, seawater pressure is gradually increased, then seawater is to the first pipe close in standpipe
Upward active force is also gradually increased, and when device drops down onto seabed, continual active force will open the first pipe close, standpipe
It is no longer blocked, seawater will continue to enter from standpipe in kickboard bottom surface and the space of cylinder formation, and be filled, and fill
Afterwards, kickboard will be jacked up by seawater, and since rising stem and kickboard are connections, rising stem and plectane, rubber pad are connections, so with
The jack-up of kickboard, rising stem, plectane, rubber pad also rise, and do piston motion receiving in mud cylinder, and with the rising of plectane, band
Dynamic pull rod and plunger are removed out of mud guiding tube, then, the mud at seabed passed through inclined tube, into mud hole into mud after through by leading mud
Pipe, which is inhaled into, to be received in mud cylinder, when plectane, which rises to, to be received at the top of mud cylinder, is received mud in mud cylinder and has been collected completely, seawater still continues not
The disconnected active force upward to kickboard, at this point, the power will drive whole device to float, until device emersion sea, in entire mistake
Cheng Zhong, the active force for the seawater in space that the second pipe close is formed by kickboard bottom surface with cylinder and be ejected outward, in cylinder
Seawater a part is discharged from drainpipe, to allow the continual entrance of the intracorporal water of cylinder, and keep a dynamic process, into
And plectane is allowed to continue stress；
3. passing through setting enters mud pipe and inclined inclined tube, it is ensured that device smoothly inhales mud without being blocked, and inclined tube is outer
Wall comes directly towards equipped with hemispherical, when the sundries in seawater is reached at inclined tube, since top is raised, so sundries first touches top
Head, and inclined tube is to tilt down placement, the side cross-sectional of inclined tube is right-angled trapezium, so sundries will not block the import of inclined tube,
Guarantee to inhale the smooth of mud and then guarantees to inhale the smooth of mud.
Detailed description of the invention
Fig. 1 is a kind of schematic view of the front view of ocean engineering seabed sludge sampler proposed by the present invention；
Fig. 2 is a kind of the schematic diagram of the section structure of ocean engineering seabed sludge sampler proposed by the present invention；
Fig. 3 is a kind of structural schematic diagram of ocean engineering seabed sludge sampler part A proposed by the present invention；
Fig. 4 is a kind of partial structural diagram of ocean engineering seabed sludge sampler proposed by the present invention；
Fig. 5 is a kind of kickboard of ocean engineering seabed sludge sampler proposed by the present invention and the cross-section structure signal of floating ball
Figure.
In figure: ground needle, 5 lanyards, 6 weight tops, 7 inclined tubes, 8 enters mud pipes, 9 are inserted in 1 cylinder, 2 second connecting ropes, 3 drainpipes, 4
Mud cylinder, 14 rising stems, 15 plectanes, 16 rubber pads, 17 pipe lids, 18 tether wires are received in mud guiding tube, 10 second pipe closes, 11 baffles, 12 kickboards, 13
Ring, 19 fixed links, 20 standpipes, 21 first pipe closes, 22 first connecting ropes, 23 flaring buckets, 24 tops, 25 filter covers, 26 are into mud hole, 27
Plunger, 28 pull rods, 29 foam floating balls.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-5, a kind of ocean engineering seabed sludge sampler, including cylinder 1, the section knot of 1 bottom end of cylinder
Structure is infundibulate, and there are four the slotting ground needles 4 of equidistant annular spread for outer wall welding of the cylinder 1 close to bottom end, and insert bowing for ground needle 4
Structure is regarded as circle, the bottom end outer wall center of cylinder 1 is provided with circular hole, and the inner wall of circular hole is welded with mud guiding tube 9, mud guiding tube
9 bottom end is threaded with enters mud pipe 8, and the bottom end of enters mud pipe 8 is welded with filter cover 25, and the bottom outer wall of filter cover 25 is provided with equidistantly
From annular spread into mud hole 26, the side wall of enters mud pipe 8 successively opens the inclined hole of equidistant annular spread from top to bottom, inclined hole
Inner wall is welded with the inclined tube 7 tilted down, and the side view structure of inclined tube 7 is right-angled trapezium, and the top exterior walls of inclined tube 7 are welded with
Top 24, and coming directly towards 24 is hemispherical dome structure, sidewall weld of the cylinder 1 close to bottom end has the connection strap of equidistant annular spread,
And the bottom end of connection strap is welded with line fastening ring 18, bolt has lanyard 5 in line fastening ring 18, and the bottom end bolt of lanyard 5 has weight top 6,
And the edge lines of 6 side view structure of weight top are streamlined.
In the present invention, the bottom outer wall of cylinder 1 opens that there are four the mounting holes that equidistantly distribute, and the inner wall of four mounting holes
Hydraulic devices are equipped with, hydraulic devices include the standpipe 20 placed vertically, and standpipe 20 is welded on the inner wall of mounting hole, standpipe 20
Bottom end be welded with flaring bucket 23, the side inner wall of standpipe 20 is welded with fixed link 19, and the side outer wall bolt of fixed link 19 has
First connecting rope 22, the top bolt of the first connecting rope 22 have the first pipe close 21, and the first pipe close 21 is rabbeted on the top of standpipe 20,
The top exterior walls of first pipe close 21 are bonded with pipe lid 17.
Inner wall of the cylinder 1 close to bottom end is welded with bottomless receipts mud cylinder 13, and receives the centre bit that mud cylinder 13 is located at cylinder 1
It sets, receipts mud cylinder 13 is embedded to be connected to plectane 15, and the bottom outer wall of plectane 15 is bonded with rubber pad 16, the specification and receipts of rubber pad 16
The specification of mud cylinder 13 is adapted, and the top exterior walls center for receiving mud cylinder 13 is provided with first through hole, and cylinder 1 embeds and is connected to kickboard
12, the bottom outer wall of kickboard 12 is bonded with the foam floating ball 29 of equidistant annular spread, and foam floating ball 29 is hemispherical dome structure, floats
The top exterior walls center of plate 12 is provided with the second through-hole, and the same rising stem 14 is plugged in the second through-hole and first through hole, rises
The bottom end of bar 14 is welded on the top exterior walls center of plectane 15, and the bottom outer wall center of plectane 15 is welded with pull rod
28, and the bottom end of pull rod 28 has been bolted plunger 27, plunger 27 is plugged in mud guiding tube 9, the top of rising stem 14
It is welded with baffle 11, and the bottom outer wall of baffle 11 is bonded with the top exterior walls of kickboard 12.
The side wall of cylinder 1 opens the drainage hole there are four equidistant annular spread, and the inner wall of four drainage holes is welded with
Drainpipe 3 is plugged with the second pipe close 10, and the side outer wall center bolt of four the second pipe closes 10 in four drainpipes 3
It is connected to the second connecting rope 2, the top bolt of four the second connecting ropes 2 has hanging ring, and four hanging rings are welded on the outer wall of cylinder 1
On.
In use, staff fastens weight top 6 in the position contrary with drifting about first according to the drift direction of seawater
Set, so change device center of gravity orientation, to allow device to fall in the seawater during keep balance, then place a device into
In seawater, device sinks to seabed under the effect of gravity, and in the process, fairshaped weight top 6 and bottom end are funnel shaped cylinder
Body 1 can reduce the resistance that device itself is subject to, and weight top 6 is located at the bottom of cylinder 1 during device falls, can
To stablize the center of gravity of cylinder 1, cylinder 1 is allowed faster to sink to seabed, when falling on seabed under device, sea can be inserted in by inserting ground needle 4
In the mud at bottom, and then whole device is allowed to keep standing without toppling over, so as to subsequent suction mud, and the process to fall in device
In, seawater enters in standpipe 20 from flaring bucket 23, there is a upward active force to the first pipe close 21 in standpipe 20, and
With the whereabouts of device, seawater pressure is gradually increased, then seawater to the upward active force of the first pipe close 21 in standpipe 20 also by
Cumulative big, when device drops down onto seabed, continual active force will open the first pipe close 21, and standpipe 20 is no longer blocked,
Seawater will continue to enter in the space that 12 bottom surface of kickboard is formed with cylinder 1 from standpipe 20, and be filled, after filling, kickboard
12 will be jacked up by seawater, and since rising stem 14 and kickboard 12 are connections, rising stem 14 and plectane 15, rubber pad 16 are connections, therefore
And with the jack-up of kickboard 12, rising stem 14, plectane 15, rubber pad 16 also rise, and piston motion is done in mud cylinder 13 receiving, and with
The rising of plectane 15, drive pull rod 28 and plunger 27 to remove out of mud guiding tube 9, then, the mud at seabed passed through tiltedly
Pipe 7, into mud hole 26 into mud after through by mud guiding tube 9 be inhaled into receive mud cylinder in, when plectane 15 rise to receive 13 top of mud cylinder when, receive mud cylinder
Mud has been collected full in 13, and the still continual active force upward to kickboard 12 of seawater, the power will drive whole device
Float, until device emersion sea, in the whole process, the second pipe close 10 by seawater active force and be ejected outward, cylinder
A part is discharged from drainpipe 3 in seawater in body 1, with the continual entrance of water allowed in cylinder 1, keeps a dynamic mistake
Journey, and then plectane is allowed to continue stress, during above-mentioned suction mud, foam floating ball 29 can increase the buoyancy that kickboard 12 is subject to,
And then accelerate the speed that device floats, since the outer wall of inclined tube 7 is equipped with hemispherical top 24, the sundries in seawater reaches inclined tube 7
When place, since top 24 is raised, so sundries first touches top 24, and inclined tube 7 is to tilt down placement, so sundries
The import of inclined tube 7 will not be blocked, guarantees to inhale the smooth of mud.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of ocean engineering seabed sludge sampler, including cylinder (1), which is characterized in that cylinder (1) bottom end
Cross-section structure is infundibulate, and there are four the slotting ground needles of equidistant annular spread for outer wall welding of the cylinder (1) close to bottom end
(4), and the plan structure of ground needle (4) is inserted as circle, the bottom end outer wall center of the cylinder (1) is provided with circular hole, and circular hole
Inner wall be welded with mud guiding tube (9), the bottom end of the mud guiding tube (9) is threaded with enters mud pipe (8), and the bottom of enters mud pipe (8)
End is welded with filter cover (25), the bottom outer wall of the filter cover (25) be provided with equidistant annular spread into mud hole (26), it is described into
The side wall of mud pipe (8) successively opens the inclined hole of equidistant annular spread from top to bottom, and the inner wall of the inclined hole is welded with downwards
Inclined inclined tube (7), and the side view structure of inclined tube (7) is right-angled trapezium, the top exterior walls of the inclined tube (7) are welded with top
(24), and top (24) is hemispherical dome structure, and sidewall weld of the cylinder (1) close to bottom end has the company of equidistant annular spread
Narrow bars, and the bottom end of connection strap is welded with line fastening ring (18), there is lanyard (5) bolt in the line fastening ring (18), the lanyard (5)
Bottom end bolt have weight top (6), and the edge lines of weight top (6) side view structure be it is streamlined.
2. a kind of ocean engineering according to claim 1 seabed sludge sampler, which is characterized in that the cylinder
(1) bottom outer wall opens that there are four the mounting holes that equidistantly distribute, and the inner wall of four mounting holes is equipped with hydraulic devices.
3. a kind of ocean engineering according to claim 2 seabed sludge sampler, which is characterized in that the hydraulic pressure dress
The standpipe (20) including placing vertically is set, and standpipe (20) is welded on the inner wall of mounting hole, the bottom end of standpipe (20) is welded with expansion
Mouth bucket (23), the side inner wall of standpipe (20) are welded with fixed link (19), and the side outer wall bolt of fixed link (19) has the first company
The top bolt of splicing (22), the first connecting rope (22) has the first pipe close (21), and the first pipe close (21) is rabbeted in standpipe (20)
Top, the top exterior walls of the first pipe close (21) are bonded with pipe lid (17).
4. a kind of ocean engineering according to claim 1 seabed sludge sampler, which is characterized in that the cylinder
(1) inner wall close to bottom end is welded with bottomless receipts mud cylinder (13), and receives the center that mud cylinder (13) are located at cylinder (1).
5. a kind of ocean engineering according to claim 4 seabed sludge sampler, which is characterized in that the receipts mud cylinder
(13) embed and be connected to plectane (15), and the bottom outer wall of plectane (15) is bonded with rubber pad (16), the specification of rubber pad (16) with
The specification for receiving mud cylinder (13) is adapted.
6. a kind of ocean engineering according to claim 4 seabed sludge sampler, which is characterized in that the receipts mud cylinder
(13) top exterior walls center is provided with first through hole, and cylinder (1) is embedded and is connected to kickboard (12), outside the bottom of kickboard (12)
Wall is bonded with the foam floating ball (29) of equidistant annular spread, and foam floating ball (29) is hemispherical dome structure, the top of kickboard (12)
Outer wall center is provided with the second through-hole, is plugged in the second through-hole and first through hole the same rising stem (14), rising stem (14)
Bottom end is welded on the top exterior walls center of plectane (15).
7. a kind of ocean engineering according to claim 5 seabed sludge sampler, which is characterized in that the plectane
(15) bottom outer wall center is welded with pull rod (28), and the bottom end of pull rod (28) has been bolted plunger
(27), plunger (27) is plugged in mud guiding tube (9).
8. a kind of ocean engineering according to claim 5 seabed sludge sampler, which is characterized in that the rising stem
(14) top is welded with baffle (11), and the bottom outer wall of baffle (11) is bonded with the top exterior walls of kickboard (12).
9. a kind of ocean engineering according to claim 1 seabed sludge sampler, which is characterized in that the cylinder
(1) side wall opens the drainage hole there are four equidistant annular spread, and the inner wall of four drainage holes is welded with drainpipe (3).
10. a kind of ocean engineering according to claim 9 seabed sludge sampler, which is characterized in that described in four
It is plugged with the second pipe close (10) in drainpipe (3), and the side outer wall center bolt of four the second pipe closes (10) has the
The top bolt of two connecting ropes (2), four the second connecting ropes (2) has hanging ring, and four hanging rings are welded on the outer wall of cylinder (1)
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207450.2A CN109163938A (en) | 2018-10-17 | 2018-10-17 | A kind of ocean engineering seabed sludge sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207450.2A CN109163938A (en) | 2018-10-17 | 2018-10-17 | A kind of ocean engineering seabed sludge sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109163938A true CN109163938A (en) | 2019-01-08 |
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ID=64878474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811207450.2A Pending CN109163938A (en) | 2018-10-17 | 2018-10-17 | A kind of ocean engineering seabed sludge sampler |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749475A (en) * | 2019-11-12 | 2020-02-04 | 湖南科技大学 | Streamline combined box-type sampler and sampling method thereof |
-
2018
- 2018-10-17 CN CN201811207450.2A patent/CN109163938A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749475A (en) * | 2019-11-12 | 2020-02-04 | 湖南科技大学 | Streamline combined box-type sampler and sampling method thereof |
| CN110749475B (en) * | 2019-11-12 | 2024-05-03 | 湖南科技大学 | Streamline combined box-type sampler and sampling method thereof |
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Application publication date: 20190108 |
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| RJ01 | Rejection of invention patent application after publication |