CN112255025B - Concrete sampling tube equipment - Google Patents
Concrete sampling tube equipment Download PDFInfo
- Publication number
- CN112255025B CN112255025B CN202011273052.8A CN202011273052A CN112255025B CN 112255025 B CN112255025 B CN 112255025B CN 202011273052 A CN202011273052 A CN 202011273052A CN 112255025 B CN112255025 B CN 112255025B
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- sampling
- side wall
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- fixedly connected
- lateral wall
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- 238000005070 sampling Methods 0.000 title claims abstract description 146
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 230000000670 limiting effect Effects 0.000 claims description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses concrete sampling tube equipment, which comprises a tube body, wherein a sampling port is formed in the side wall of the tube body, a mounting cover is fixedly connected to the side wall of the sampling port, a sampling hole group is formed in the side wall of the mounting cover, the sampling hole group comprises a first sampling hole, a second sampling hole and a third sampling hole, a sealing plate is inserted into the side wall of the mounting cover, a through hole is formed in the side wall of the sealing plate, the through hole is matched with the sampling hole group, a sliding rod is fixedly connected to the upper side wall of the sealing plate, a fixing block is fixedly connected to the side wall of the sliding rod, a first spring is sleeved on the side wall of the sliding rod, and two ends of the first spring are fixedly connected with the fixing block and the side wall of the mounting cover respectively. The invention relates to the technical field of concrete sampling equipment, in particular to concrete sampling pipe equipment which can realize repeated automatic quantitative sampling of concrete, is more convenient to use, improves the sampling efficiency and simultaneously avoids the waste of the concrete.
Description
Technical Field
The invention relates to the technical field of concrete sampling equipment, in particular to concrete sampling pipe equipment.
Background
Concrete is produced by a concrete mixing plant and transported to a construction site by a concrete mixing truck. If the stirring performance of the concrete stirring station or the concrete stirring transport vehicle is poor, the phenomena of layering, segregation, even initial setting and the like of concrete can occur, the quality of the concrete is seriously influenced, and the stirring performance of various concrete stirring stations and the concrete stirring transport vehicle is generally tested by adopting a concrete mixture homogeneity test in the industry.
However, traditional concrete sampling equipment often needs the staff to take the container and place in concrete mixer truck discharge gate below in the use, and is very inconvenient when taking a sample like this, can't accomplish quantitative sampling simultaneously, causes the waste easily to the frequency is higher when current concrete sampling, often uses same container to take a sample when taking a sample, only can carry out follow-up sample after need taking out the concrete in the container, influences sampling efficiency, and the residue in the container will influence follow-up sampling result simultaneously.
Disclosure of Invention
The invention aims to provide a concrete sampling tube device, which solves the problems that the concrete sampling tube device in the current market proposed by the background technology is inconvenient to sample and causes concrete waste.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a concrete sampling tube equipment, includes the body, the sample connection has been seted up to the lateral wall of body, the lateral wall fixedly connected with installation cover of sample connection, the sample hole group has been seted up to the lateral wall of installation cover, the sample hole group includes first sample hole, second sample hole and third sample hole, the closing plate has been inserted to the lateral wall of installation cover, and the lateral wall of closing plate has been seted up the through-hole, through-hole and sample hole group phase-match, the last lateral wall fixedly connected with slide bar of closing plate, and the lateral wall fixedly connected with fixed block of slide bar, the lateral wall cover of slide bar is equipped with first spring, and the both ends of first spring are connected with fixed block and the lateral wall fixedly connected with of installation cover respectively, the last lateral wall fixedly connected with mounting panel of installation cover, the lateral wall of mounting panel is provided with the telescopic machanism that a plurality of arrays set up, and the lateral wall of telescopic machanism is connected with stopper group, the stopper group includes first stopper, second stopper and third stopper, the stopper group still includes first sliding surface and the first limit surface that the slope set up;
the side wall fixedly connected with sampling box group of body, sampling box group includes first sampling box, second sampling box and third sampling box, fixedly connected with sampling tube group between sampling box group and the sample hole group, sampling tube group includes first sampling tube, second sampling tube and third sampling tube, the lateral wall of sampling box group all is provided with row's material pipe, and the lower lateral wall fixedly connected with control box group of sampling box group, control box group includes first control box, second control box and third control box, the inside wall sliding connection of sampling box group has the backup pad, the lower lateral wall fixedly connected with bracing piece of backup pad, and the other end of bracing piece runs through the lateral wall of control box group, the inside of control box group is provided with the working chamber, the lateral wall sliding connection of working chamber has the sliding plate of U-shaped setting, the sliding plate includes second limiting surface and the second sliding surface that inclines to set up, and the sliding plate cover establishes at the lateral wall of bracing piece, the lateral wall fixed cover of bracing piece is equipped with solid fixed ring, the lateral wall cover of bracing piece is equipped with the second spring, and the second spring loop and the fixed connection of both ends of strip-shaped side wall and the fixed wire rope of control box group have, the wire rope respectively, the wire rope fixed end and the fixed stop block have, the wire rope respectively with the fixed side wall of wire rope respectively, the fixed side wall of stop block and the fixed pulley, the steel wire rope group is driven by the fixed pulley block and is in a stretching state.
Preferably, the telescopic machanism includes the T shape guide arm that a plurality of arrays that sliding connection was set up on the mounting panel lateral wall, the lateral wall cover of T shape guide arm is equipped with the fourth spring, and the both ends of fourth spring offset with the lateral wall of mounting panel and stopper group respectively, and the lateral wall of T shape guide arm is fixed with the one end of wire rope group.
Preferably, the reset mechanism comprises a mounting hole formed in the side wall of the control box group, the sliding block slides in the mounting hole, a fifth spring is fixedly connected to the side wall of the sliding block, and the other end of the fifth spring is fixed with the bottom of the mounting hole.
Preferably, the upper end of the sliding rod is fixedly connected with a button, and a rubber sleeve is fixedly sleeved on the side wall of the button.
Preferably, the side wall of the sampling box group is rotationally connected with a cover plate through a hinge, the side wall of the cover plate is fixedly connected with a handle, and the cover plate is fixedly connected with a sealing strip with the side wall matched with the sampling box group.
Compared with the prior art, the invention has the beneficial effects that:
1. by arranging the supporting plate, the sliding plate and the like, when sampling is needed, the button is pressed, the fixed block moves downwards, meanwhile, the first spring contracts, when the fixed block slides on the first sliding surface, the fourth spring contracts, so that the fixed block is propped against the first limiting surface, at the moment, the through hole is aligned with the first sampling hole, concrete in the pipe body enters the first sampling box through the first sampling pipe, at the moment, the supporting plate and the supporting rod move downwards, the second spring contracts, due to the limiting effect of the sliding block, the sliding plate cannot move downwards, after the sampled concrete in the first sampling box reaches a certain weight, the sliding plate overcomes the elastic limit of the fifth spring and the third spring to move downwards, the sliding block slides on the second sliding surface, the sliding plate moves downwards to drag the first steel wire rope to enable the first limiting block to retract, at the moment, under the spring force of the first spring, the sealing plate moves upwards, so that the first sampling hole is sealed, and after the sampled concrete in the first sampling box is discharged through the discharge pipe, the supporting plate can automatically reset under the action of the third spring, the concrete is more convenient to use, and the concrete is more convenient to sample quantitatively and quantitative;
2. through setting up second sampling case, second stopper etc., after the sample concrete in the first sampling case reaches certain weight, the closing plate upward movement, make fixed block and the first spacing face of second stopper offset, the through-hole then aligns with the second sampling hole, concrete in the body then gets into the second sampling case through the second sampling pipe, after the sample concrete in the second sampling case reaches certain weight, drag the second wire rope and make the second stopper withdraw, at this moment under the spring force effect of first spring, the closing plate continues upward movement, and seal the second sampling hole, and make the fixed block offset with the first spacing face of third stopper, the through-hole then aligns with the third sampling hole, concrete in the body then gets into the third sampling case through the third sampling pipe, after the sample concrete in the third sampling case reaches certain weight, drag the third wire rope and make the third stopper withdraw, continue upward movement under the spring force effect of first spring this moment, and seal the third sampling hole and stop the closing plate, the sealed sampling hole has been realized, the sealing plate is sealed to the sampling hole has been used completely, the sealing plate has been realized, the sealing plate is more convenient for the sampling hole is more completely.
Drawings
FIG. 1 is a schematic diagram showing a front perspective view of a concrete sampling tube apparatus according to the present invention;
FIG. 2 is a schematic rear perspective view of a concrete sampling tube apparatus according to the present invention;
FIG. 3 is a schematic cross-sectional view of a mounting cup in a concrete sampling tube apparatus according to the present invention;
fig. 4 is a schematic cross-sectional view of a first control box in a concrete sampling tube apparatus according to the present invention.
In the figure: 1. a tube body; 2. a mounting cover; 301. a first control box; 302. a second control box; 303. a third control box; 401. a first sampling hole; 402. a second sampling hole; 403. a third sampling hole; 5. a first spring; 6. a button; 701. a first wire rope; 702. a second wire rope; 703. a third wire rope; 801. a first sampling tube; 802. a second sampling tube; 803. a third sampling tube; 901. a first sampling tank; 902. a second sampling tank; 903. a third sampling tank; 10. a sealing plate; 11. a slide bar; 12. a through hole; 13. a T-shaped guide rod; 14. a fourth spring; 1501. a first limiting block; 1502. a second limiting block; 1503. a third limiting block; 16. a first sliding surface; 17. a fixed block; 18. a cover plate; 19. a support plate; 20. a support rod; 21. a sliding plate; 2101. the second limiting surface; 2102. a second sliding surface; 22. a working chamber; 23. a fixing ring; 24. a second spring; 25. a third spring; 26. a strip-shaped opening; 27. a mounting hole; 28. a sliding block; 29. a fifth spring; 30. a discharge pipe; 31. a mounting plate; 32. a sampling port; 33. and the first limiting surface.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to FIGS. 1-4, a concrete sampling tube apparatus comprises a tube body 1, a sampling port 32 is provided on the side wall of the tube body 1, a mounting cover 2 is fixedly connected to the side wall of the sampling port 32, a sampling hole group is provided on the side wall of the mounting cover 2, the sampling hole group comprises a first sampling hole 401, a second sampling hole 402 and a third sampling hole 403, a sealing plate 10 is inserted into the side wall of the mounting cover 2, a through hole 12 is provided on the side wall of the sealing plate 10, the through hole 12 is matched with the sampling hole group, a sliding rod 11 is fixedly connected to the upper side wall of the sealing plate 10, a button 6 is fixedly connected to the upper end of the sliding rod 11, a rubber sleeve is provided on the side wall fixing sleeve of the button 6, an operator can press the sliding rod 11 conveniently, a fixing block 17 is fixedly connected to the side wall of the sliding rod 11, a first spring 5 is sleeved on the side wall of the sliding rod 11, the two ends of the first spring 5 are fixedly connected with the fixed block 17 and the side wall of the mounting cover 2 respectively, the upper side wall of the mounting cover 2 is fixedly connected with the mounting plate 31, the side wall of the mounting plate 31 is provided with a plurality of telescopic mechanisms arranged in an array, the side wall of the telescopic mechanisms is connected with a limiting block group, each telescopic mechanism comprises a plurality of T-shaped guide rods 13 arranged in an array and slidably connected to the side wall of the mounting plate 31, the side wall of each T-shaped guide rod 13 is sleeved with a fourth spring 14, the two ends of each fourth spring 14 are respectively propped against the side wall of the mounting plate 31 and the side wall of the corresponding limiting block group, the side wall of each T-shaped guide rod 13 is fixed with one end of the corresponding steel wire rope group, the limiting block group plays a role in guiding and limiting, and the limiting block group comprises a first limiting block 1501, a second limiting block 1502 and a third limiting block 1503, and each limiting block group further comprises a first sliding surface 16 and a first limiting surface 33 which are obliquely arranged;
the side wall of the tube body 1 is fixedly connected with a sampling box group, the sampling box group comprises a first sampling box 901, a second sampling box 902 and a third sampling box 903, a sampling tube group is fixedly connected between the sampling box group and the sampling hole group, the sampling tube group comprises a first sampling tube 801, a second sampling tube 802 and a third sampling tube 803, the side wall of the sampling box group is rotationally connected with a cover plate 18 through a hinge, the side wall of the cover plate 18 is fixedly connected with a handle, the cover plate 18 and the side wall matched with the sampling box group are fixedly connected with sealing strips, cleaning and maintenance are convenient for the inside of the sampling box group, the tightness is ensured, the side walls of the sampling box group are all provided with a discharge tube 30, the lower side wall of the sampling box group is fixedly connected with a control box group, the control box group comprises a first control box 301, a second control box 302 and a third control box 303, the inner side wall of the sampling box group is slidably connected with a supporting plate 19, the lower side wall of the supporting plate 19 is fixedly connected with a supporting rod 20, the other end of the supporting rod 20 penetrates through the side wall of the control box group, a working cavity 22 is arranged in the control box group, the side wall of the working cavity 22 is connected with a U-shaped sliding plate 21 in a sliding manner, the sliding plate 21 comprises a second limiting surface 2101 and a second sliding surface 2102 which are obliquely arranged, the sliding plate 21 is sleeved on the side wall of the supporting rod 20, a fixed ring 23 is fixedly sleeved on the side wall of the supporting rod 20, a second spring 24 is sleeved on the side wall of the supporting rod 20, two ends of the second spring 24 are respectively fixed with the fixed ring 23 and the side wall of the sliding plate 21, a third spring 25 is sleeved on the side wall of the supporting rod 20, two ends of the third spring 25 are respectively fixed with the sliding plate 21 and the side wall of the control box group, a reset mechanism is arranged on the side wall of the control box group, a sliding block 28 is connected with the side wall of the reset mechanism, the reset mechanism comprises a mounting hole 27 formed in the side wall of the control box group, the sliding block 28 slides in the mounting hole 27, the lateral wall fixedly connected with fifth spring 29 of sliding block 28, and the other end of fifth spring 29 is fixed with the bottom of mounting hole 27, provide the extrusion force to sliding block 28, and play reset effect, and sliding block 28 offsets with second limit surface 2101, bar opening 26 has been seted up to the lateral wall of control box group, the interpolation of bar opening 26 is equipped with wire rope group, wire rope group includes first wire rope 701, second wire rope 702 and third wire rope 703, the both ends of wire rope group are fixed with the lateral wall of sliding plate 21 and telescopic machanism respectively, wire rope group passes through fixed pulley group transmission, and wire rope group is tensile state.
In the invention, when the concrete sampling device works, concrete is conveyed through the pipe body 1, when sampling is needed, the button 6 is pressed, so that the fixed block 17 moves downwards, meanwhile, the first spring 5 contracts, when the fixed block 17 slides on the first sliding surface 16, the fourth spring 14 contracts, so that the fixed block 17 is propped against the first limiting surface 33, the through hole 12 is aligned with the first sampling hole 401 at the moment, concrete in the pipe body 1 enters the first sampling box 901 through the first sampling pipe 801, the supporting plate 19 and the supporting rod 20 move downwards, so that the second spring 24 contracts, the sliding plate 21 cannot move downwards due to the limiting effect of the sliding block 28, when the sampled concrete in the first sampling box 901 reaches a certain weight, the sliding plate 21 overcomes the elastic limit of the fifth spring 29 and the third spring 25, so that the sliding block 28 slides on the second sliding surface 2102, the sliding plate 21 moves downwards to drag the first steel wire rope 701 so that the first limiting block retracts, the spring 5 moves downwards under the spring force of the first limiting plate 1501, the first spring 10 moves downwards under the first spring 5, the sealing plate 10 moves downwards, the first spring 25 can drain the concrete in the sampling box more conveniently, and the concrete can drain out of the sampling box is more conveniently and the concrete in the sampling box is more conveniently and the concrete box is discharged by the sealing mode, the first spring 30 is more convenient; when the sampled concrete in the first sampling box 901 reaches a certain weight, the sealing plate 10 moves upwards, the fixing block 17 is abutted against the first limiting surface 33 of the second limiting block 1502, the through hole 12 is aligned with the second sampling hole 402, the concrete in the pipe body 1 enters the second sampling box 902 through the second sampling pipe 802, after the sampled concrete in the second sampling box 902 reaches a certain weight, the second steel wire rope 702 is pulled to retract the second limiting block 1502, at this moment, under the action of the spring force of the first spring 5, the sealing plate 10 continues to move upwards, the second sampling hole 402 is sealed, and the fixing block 17 is abutted against the first limiting surface 33 of the third limiting block 1503, at this moment, the through hole 12 is aligned with the third sampling hole 403, the concrete in the pipe body 1 enters the third sampling box 903 through the third sampling pipe 803, after the sampled concrete in the third sampling box 903 reaches a certain weight, the third steel wire rope 703 is pulled to retract the third limiting block 1503, under the action of the spring force of the first spring 5, the sealing plate 10 continues to move upwards, the sealing plate 403 is sealed, the sampling holes are sealed up, and the sampling efficiency is improved, and the automatic sealing of the sampling holes is further improved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides a concrete sampling tube equipment, includes body (1), its characterized in that, sample connection (32) have been seted up to the lateral wall of body (1), lateral wall fixedly connected with installing cover (2) of sample connection (32), sample hole group has been seted up to the lateral wall of installing cover (2), sample hole group includes first sample hole (401), second sample hole (402) and third sample hole (403), sealing plate (10) have been inserted to the lateral wall of installing cover (2), and through-hole (12) have been seted up to the lateral wall of sealing plate (10), through-hole (12) and sample hole group assorted, the last lateral wall fixedly connected with slide bar (11) of sealing plate (10), and the lateral wall fixedly connected with fixed block (17) of slide bar (11), the lateral wall cover of slide bar (11) is equipped with first spring (5), and the both ends of first spring (5) are respectively with the lateral wall fixedly connected with fixed block (17) and installing cover (2), the last lateral wall fixedly connected with mounting panel (1503) of installing cover (2), spacing block (31) and spacing block (1501) are connected with spacing block group (1502) of a plurality of spacing block groups, spacing block (3) are provided with each other, the limiting block group further comprises a first sliding surface (16) and a first limiting surface (33) which are obliquely arranged; the side wall fixedly connected with sampling box group of body (1), sampling box group includes first sampling box (901), second sampling box (902) and third sampling box (903), fixedly connected with sampling tube group between sampling box group and the sampling hole group, sampling tube group includes first sampling tube (801), second sampling tube (802) and third sampling tube (803), sampling box group's lateral wall all is provided with row material pipe (30), and sampling box group's lower lateral wall fixedly connected with control box group, control box group includes first control box (301), second control box (302) and third control box (303), sampling box group's inside wall sliding connection has backup pad (19), backup pad (19) lower lateral wall fixedly connected with bracing piece (20), and the other end of bracing piece (20) runs through control box group's lateral wall, control box group's inside is provided with working chamber (22), working chamber (22) lateral wall sliding connection has sliding plate (21) that the U-shaped set up, sliding plate (21) including setting up second control box (302) and second control box (20) and second control box (2102) are equipped with sliding plate (20) at lateral wall (20) fixed sleeve (20), the two ends of the second spring (24) are respectively fixed with the fixed ring (23) and the side wall of the sliding plate (21), a third spring (25) is sleeved on the side wall of the supporting rod (20), the two ends of the third spring (25) are respectively fixed with the sliding plate (21) and the side wall of the control box group, the side wall of the control box group is provided with a reset mechanism, the side wall of the reset mechanism is connected with a sliding block (28), the sliding block (28) is propped against the second limiting surface (2101), a strip-shaped opening (26) is formed in the side wall of the control box group, a steel wire rope group is inserted in the strip-shaped opening (26), the steel wire rope group comprises a first steel wire rope (701), a second steel wire rope (702) and a third steel wire rope (703), the two ends of the steel wire rope group are respectively fixed with the side wall of the sliding plate (21) and the side wall of the telescopic mechanism, and the steel wire rope group is driven by a fixed pulley block, and the steel wire rope group is in a stretching state;
the telescopic mechanism comprises a plurality of T-shaped guide rods (13) which are arranged in an array and are connected to the side wall of the mounting plate (31) in a sliding manner, a fourth spring (14) is sleeved on the side wall of the T-shaped guide rod (13), two ends of the fourth spring (14) respectively abut against the side wall of the mounting plate (31) and the side wall of the limiting block group, and the side wall of the T-shaped guide rod (13) is fixed with one end of the steel wire rope group;
the reset mechanism comprises a mounting hole (27) formed in the side wall of the control box group, the sliding block (28) slides in the mounting hole (27), a fifth spring (29) is fixedly connected to the side wall of the sliding block (28), and the other end of the fifth spring (29) is fixed with the bottom of the mounting hole (27).
2. The concrete sampling tube device according to claim 1, wherein the upper end of the sliding rod (11) is fixedly connected with a button (6), and a rubber sleeve is fixedly sleeved on the side wall of the button (6).
3. The concrete sampling tube device according to claim 1, wherein the side wall of the sampling box group is rotatably connected with a cover plate (18) through a hinge, the side wall of the cover plate (18) is fixedly connected with a handle, and the side wall of the cover plate (18) matched with the sampling box group is fixedly connected with a sealing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011273052.8A CN112255025B (en) | 2020-11-14 | 2020-11-14 | Concrete sampling tube equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011273052.8A CN112255025B (en) | 2020-11-14 | 2020-11-14 | Concrete sampling tube equipment |
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| CN112255025A CN112255025A (en) | 2021-01-22 |
| CN112255025B true CN112255025B (en) | 2024-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114791375B (en) * | 2022-05-04 | 2022-10-04 | 浙江致远工程管理有限公司 | Intelligent equipment for building material inspection |
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| CN211042797U (en) * | 2019-09-29 | 2020-07-17 | 海南瑞泽双林建材有限公司 | Concrete sampling tube device |
| CN111649984A (en) * | 2020-07-16 | 2020-09-11 | 长沙矿冶研究院有限责任公司 | Deep sea sediment sampling device and sampling method thereof |
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