CN106644571B - Double-tube bottom mud sampler - Google Patents
Double-tube bottom mud sampler Download PDFInfo
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- CN106644571B CN106644571B CN201710057652.2A CN201710057652A CN106644571B CN 106644571 B CN106644571 B CN 106644571B CN 201710057652 A CN201710057652 A CN 201710057652A CN 106644571 B CN106644571 B CN 106644571B
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- conduit
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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
-
- 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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- Physics & Mathematics (AREA)
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- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Hydrology & Water Resources (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a double-pipe bottom mud sampler, which comprises an external conduit, an internal conduit and a sampling tube; the inner conduit is sleeved in the outer conduit, and the outer conduit is connected with the inner conduit through a transverse bolt; the sampling tube comprises an inner tube and an outer tube, and the inner tube is sleeved in the outer tube; the inner conduit is connected with the inner cylinder through a vertical bolt; the outer conduit is connected with the outer cylinder through a long metal strip; the bottom of the outer cylinder is provided with an openable sealing cover, the inner cylinder and the sealing cover are connected through a steel wire rope, and the steel wire rope is welded on the inner cylinder and the sealing cover. And when the double-pipe sediment sampler is lifted up, the totally-enclosed sampling is realized through the closing state of the closing cover and the closing state of the top of the sampling tube. The invention has the advantages of reliable principle, simple operation, portability, good sealing performance and small disturbance to soil samples.
Description
Technical Field
The invention relates to the technical field of sludge and soft soil sampling, in particular to a double-tube bottom sludge sampler.
Background
In the river bottom dredging engineering, the distribution condition, mechanical property and chemical composition of the river bottom sediment need to be known, and then the river bottom sediment needs to be sampled and analyzed.
Because the bottom mud is easy to flow, the sampling is difficult by using a common open type sampler. The current common sampler mainly comprises grab bucket type, box type, gravity type, piston type and freezing type. The grab type and box type samplers have larger disturbance of the samples, the piston type and freezing type samplers have complex operation and higher cost, and the gravity type samplers have higher requirements on the manufacturing and operation level of the samplers.
Therefore, the invention provides a double-tube sediment sampler aiming at the defects of the existing sampler.
Disclosure of Invention
The invention aims to provide a double-tube sediment sampler, which aims to solve the problems of difficult sediment sampling, large disturbance during sampling and complicated operation.
The invention adopts the technical scheme that: a double-tube bottom mud sampler comprises an external conduit, an internal conduit and a sampling tube; the inner conduit is sleeved in the outer conduit, and the outer conduit is connected with the inner conduit through a transverse bolt; the sampling tube comprises an inner tube and an outer tube, and the inner tube is sleeved in the outer tube; the inner conduit is connected with the inner cylinder through a vertical bolt; the external conduit is connected with the outer cylinder through a long metal strip, and a gap between the external conduit supported by the long metal strip and the outer cylinder of the sampling cylinder is a mud discharge space; the bottom of the sampling tube outer cylinder is provided with an openable sealing cover, the sampling tube inner cylinder and the sealing cover are connected through a steel wire rope, and the steel wire rope is welded on the inner cylinder and the sealing cover.
The side wall of the outer conduit is provided with a through bolt hole. The side wall of the inner conduit is provided with an upper through bolt hole and a lower through bolt hole, the outer conduit is connected with the inner conduit through bolts, the bolts penetrate through the bolt holes of the outer conduit and the upper inner conduit bolt holes when in drilling, and the bolts penetrate through the outer conduit bolt holes and the lower inner conduit bolt holes when in lifting; the screw threads are arranged on the upper parts of the outer guide pipe and the inner guide pipe, so that lengthening is facilitated when a bottom mud sample at a deeper position is taken, and bolt holes are formed in the uppermost sections of the outer guide pipe and the inner guide pipe.
The bottom of the outer conduit is provided with an outer conduit bottom plate, the center of the outer conduit bottom plate is provided with a round hole for the inner conduit to move up and down, and the inner conduit is in clearance fit with the round hole. The bottom of the inner conduit is provided with an inner conduit bottom plate, and the center of the inner conduit bottom plate is provided with a bolt hole. The top of the inner cylinder is provided with a horizontal cross metal strip, the cross center of the inner cylinder is provided with a bolt hole, the rest parts of the top of the inner cylinder are all open, and the bolt penetrates through the bolt hole of the bottom plate of the inner conduit and the bolt hole of the top of the inner cylinder to connect the inner conduit with the inner cylinder. The top of the outer cylinder is provided with an outer cylinder top plate, and the rest parts of the outer cylinder top plate are closed except for a round hole which can move up and down by the inner cylinder. A plurality of long metal strips, generally four, are symmetrically welded between the bottom plate of the external conduit and the top plate of the outer cylinder. When the sampler is lifted, the top of the inner cylinder of the sampling tube is contacted with the bottom of the inner guide tube, and the bottom plate of the inner guide tube seals the upper part of the sampling tube. When the sampler is drilled down, bottom mud overflows from the gap at the top of the inner cylinder and flows out through the gap of the long metal strip.
The sealing covers are provided with a left sealing cover and a right sealing cover, the shape of each sealing cover is a semicircular one-side rectangle, the curve section of one semicircular side is connected with the rectangle side, and the end of the rectangle side of each sealing cover is provided with a round hole. Two pairs of symmetrical sealing cover positioning metal strips are welded on the inner side wall of the bottom of the outer cylinder, and a metal cylinder is welded between each pair of sealing cover positioning metal strips and penetrates through the round hole of the sealing cover to play a role in hinging.
Two short metal strips are symmetrically welded on the outer side of the wall of the inner cylinder, each short metal strip is connected with a sealing cover on the corresponding side of each short metal strip through a steel wire rope welded on the short metal strips, the steel wire ropes are in a loose state when the double-pipe bottom mud sampler drills down, and the steel wire ropes are in a tensioning state when the double-pipe bottom mud sampler lifts up.
The bottom of the outer cylinder is provided with a bent part which plays a role of a flange for the sealing cover. When the double-pipe bottom mud sampler is lifted, the edges of the straight line segments of the two sealing covers are tightly sealed. When the double-pipe bottom mud sampler drills down, the sealing cover is bent and blocked by the bottom of the outer cylinder.
The beneficial effects of the invention are as follows:
when lifting, the sealing cover at the lower part of the sampling tube seals the inner tube of the sampling tube, the upper part of the inner tube of the sampling tube is tightly blocked by the bottom of the inner guide tube, so that the full-closed sampling is realized, and the bottom mud sample is not easy to fall. When the bottom mud sample directly enters into the inner cylinder of the sampling cylinder during the drilling, besides the overflow of the soil sample at the upper part of the inner cylinder of the sampling cylinder can be extruded to disturb, the disturbance of the rest parts is smaller, the sealing cover at the lower part of the sampling cylinder seals the lower part of the inner cylinder of the sampling cylinder during the lifting, the soil sample at the lower part of the inner cylinder of the sampling cylinder can be disturbed during the process, and the disturbance of the soil sample at the middle part of the inner cylinder of the sampling cylinder is small during the whole sampling process. When shallow bed mud is sampled, the deep bed mud can be directly pressed in and lifted out by manpower, so that the deep bed mud is convenient to carry, and when thick bed mud is difficult to sample by manpower, the drilling machine can be used for pressing in and lifting out, and the operation is simple.
Drawings
Fig. 1 is a state diagram of the invention when the drill is down.
Fig. 2 is a state diagram of the invention when lifted.
FIG. 3 is a top view of the locations of the inner and outer conduit bolt holes of the present invention.
FIG. 4 is a top view of the sampling cartridge of the present invention.
FIG. 5 is a block diagram of the lower cover of the sampling tube according to the present invention.
In the figure: 1-an external catheter; 2-an inner catheter; 11-outer conduit bolt holes; 12-an external conduit floor; 21-inner conduit bolt holes; 22-an inner conduit floor; 3-a sampling tube; 31-an outer cylinder; 32-an inner cylinder; 311-an outer cylinder top plate; 4-bolts; 5-long metal strips; 6-capping; 7-a steel wire rope; 8-short metal strips; 9-crisscrossing metal strips; 10-metal cylinder; 61-cover positioning metal strips.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in FIG. 1, the double-tube sediment sampler comprises an outer guide tube 1, an inner guide tube 2 and a sampling tube 3, wherein the inner guide tube 2 is sleeved in the outer guide tube 1; the sampling tube 3 comprises an inner tube 31 and an outer tube 32, and the inner tube 31 is sleeved in the outer tube 32. The bottom of the sampling tube 3 is provided with a closing cap 6 which can be opened and closed.
The side wall of the outer conduit 1 is provided with a through outer conduit bolt hole 11, the side wall of the inner conduit 2 is provided with an upper inner conduit bolt hole 21 and a lower inner conduit bolt hole 21, the outer conduit 1 is connected with the inner conduit 2 through bolts 4, the bolts 4 penetrate through the outer conduit bolt hole 11 and the upper inner conduit bolt hole 21 when the outer conduit 1 is drilled down, and the bolts 4 penetrate through the outer conduit bolt hole 11 and the lower inner conduit bolt hole 21 when the outer conduit 1 is lifted up; the upper parts of the outer guide pipe 1 and the inner guide pipe 2 are respectively provided with threads, so that lengthening is facilitated when a deep sediment sample is taken, and the uppermost sections of the outer guide pipe 1 and the inner guide pipe 2 are respectively provided with bolt holes.
The bottom of the outer conduit 1 is provided with an outer conduit bottom plate 12, the center of the outer conduit bottom plate 12 is provided with a round hole for the inner conduit 2 to move up and down, and the inner conduit 2 is in clearance fit with the round hole. The bottom of the inner conduit 2 is provided with an inner conduit bottom plate 22, and the center of the inner conduit bottom plate 22 is provided with a bolt hole. The top of the inner cylinder 32 is provided with a horizontal crisscross metal strip 9, the cross center of the inner cylinder is provided with a bolt hole, the rest parts of the top of the inner cylinder are all open, and the bolt 4 passes through the bolt hole of the inner conduit bottom plate 22 and the bolt hole of the top of the inner cylinder 32 to connect the inner conduit 2 with the inner cylinder 32. The top of the outer cylinder 31 is provided with an outer cylinder top plate 311, and the outer cylinder top plate 311 is closed except for a round hole which can move up and down by the inner cylinder 32. Four long metal strips 5 are symmetrically welded between the outer conduit bottom plate 12 and the outer cylinder top plate 311. When the sampler is lifted, the top of the inner cylinder 32 of the sampling tube 3 is contacted with the bottom of the inner conduit 2, and the upper part of the sampling tube 3 is sealed by the bottom plate 22 of the inner conduit. When the sampler is drilled down, the bottom mud overflows from the top gap of the inner cylinder 32 and flows out through the gaps of the four long metal strips 5.
The sealing covers 6 are provided with a left sealing cover and a right sealing cover, the shape of each sealing cover 6 is a semicircular one-side rectangle, the curve section of one semicircular side is connected with the rectangle side, and the end of the rectangle side of each sealing cover 6 is provided with a round hole. Two pairs of symmetrical cover positioning metal strips 61 are welded on the inner side wall of the bottom of the outer cylinder 31, and a metal cylinder 10 is welded between each pair of cover positioning metal strips 61. The metal cylinder 10 passes through the circular hole of the cover 6 to play a role of hinging.
Two short metal strips 8 are symmetrically welded on the outer side of the wall of the inner barrel 32, each short metal strip 8 is connected with the sealing cover 6 on the corresponding side of the short metal strip through a welded steel wire rope 7, the steel wire rope 7 is in a loose state when the steel wire rope is drilled down, and the steel wire rope 7 is in a tensioning state when the steel wire rope is lifted up.
The bottom of the outer cylinder 31 is provided with a bend which plays a role of a flange for the sealing cover 6. When the sampler is lifted, the edges of the straight line segments of the two covers 6 are closed. When the sampler is being drilled down, the cover 6 is blocked by the bottom of the outer barrel 31 being bent up.
As shown in fig. 1, when the sampler is drilled down, the bolt 4 passes through the outer conduit bolt hole 11 and the inner conduit bolt hole 21 at the upper part, the inner conduit 2 and the inner cylinder 32 are connected through the bolt 4, at this time, a larger gap is formed between the top of the inner cylinder 32 and the outer conduit bottom plate 12, the two covers 6 are in an open state, and the steel wire rope 7 is in a loose state.
As shown in fig. 1, when the sampler is drilled down, the bottom mud enters from the bottom of the inner cylinder 32 of the sampling tube 3, and the bottom mud presses the two sealing covers 6, so that the bottom of the cylinder wall of the inner cylinder 32 and the bottom of the outer cylinder 31 are bent to fix the positions of the two sealing covers. Before reaching the designated sampling depth, the excess sediment flows out of the top void portion of the inner barrel 32 and is discharged through the voids between the four long metal strips 5.
As shown in fig. 2, when the sampler is lifted up, the bolt 4 passes through the outer conduit bolt hole 11 and the lower inner conduit bolt hole 21, the inner conduit 2 and the inner cylinder 32 are connected by the bolt 4, at this time, the top of the inner cylinder 32 is closely adhered to the outer conduit bottom plate 12, the two covers 6 are in a closed state, and the wire rope 7 is in a tensioned state.
As shown in fig. 2, when the sampler is lifted, the bottom mud sample is sealed in the inner cylinder 32, the two sealing covers 6 are pulled up to seal the bottom of the inner cylinder 32 by the steel wire rope 7, and the steel wire rope 7 plays a role in fixing the positions of the two sealing covers 6 because the steel wire rope 7 is in a tensioning state. At this time, the top of the inner tube 32 is closely adhered to the outer tube bottom plate 12, and thus the bottom mud cannot be lost from the upper portion of the inner tube 32. Therefore, the sampling rate of the sampler to the bottom mud is higher.
In conclusion, the double-pipe sediment sampler is reliable in principle, simple to operate, convenient to carry, good in sealing performance and small in disturbance on soil samples.
The foregoing is only a preferred embodiment of the present invention, and the problem of the materials selected in the implementation process of the present invention is not required, so that, for those skilled in the art, the manufacturing materials may be reasonably selected according to the practical situation without departing from the technical principles of the present invention, and meanwhile, several improvements and modifications may be made based on the technical principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (5)
1. The utility model provides a double-barrelled bed mud sampler, including outside pipe, inside pipe and sampling tube, its characterized in that: the inner conduit is sleeved in the outer conduit; the sampling tube comprises an inner tube and an outer tube, and the inner tube is sleeved in the outer tube; the inner conduit is connected with the inner cylinder; the external conduit is connected with the outer cylinder; the bottom of the sampling tube is provided with an openable sealing cover, and the sealing cover is connected with the inner cylinder through a steel wire rope; the side wall of the outer conduit is provided with a through bolt hole, the side wall of the inner conduit is provided with an upper through bolt hole and a lower through bolt hole, and the outer conduit is connected with the inner conduit through bolts; the bolts penetrate through the bolt holes of the outer guide pipes and the bolt holes of the inner guide pipes positioned above when the double-pipe bottom mud sampler drills down, and penetrate through the bolt holes of the outer guide pipes and the bolt holes of the inner guide pipes positioned below when the double-pipe bottom mud sampler lifts up; an outer conduit bottom plate is arranged at the bottom of the outer conduit, a round hole for the inner conduit to move up and down is arranged in the center of the outer conduit bottom plate, and the inner conduit is in clearance fit with the round hole; an inner conduit bottom plate is arranged at the bottom of the inner conduit, and a bolt hole is formed in the center of the inner conduit bottom plate; the top of the inner cylinder is provided with a horizontal crisscross metal strip, the cross center of the inner cylinder is provided with a bolt hole, the rest parts of the top of the inner cylinder are all open, and the bolt penetrates through the bolt hole of the bottom plate of the inner conduit and the bolt hole of the top of the inner cylinder to connect the inner conduit with the inner cylinder; an outer cylinder top plate is arranged at the top of the outer cylinder, and is provided with a round hole for the inner cylinder to move up and down; a plurality of long metal strips are symmetrically welded between the outer conduit bottom plate and the outer barrel top plate; when the double-pipe bottom mud sampler is lifted up, the top of the inner cylinder is contacted with the bottom of the inner guide pipe, and the bottom plate of the inner guide pipe seals the top of the inner cylinder; when the double-pipe sediment sampler drills down, sediment overflows from the gap at the top of the inner cylinder and flows out through the gap of the long metal strip.
2. The dual tube sediment sampler of claim 1 wherein: the upper parts of the outer guide pipe and the inner guide pipe are respectively provided with threads, and the uppermost sections of the outer guide pipe and the inner guide pipe are respectively provided with a bolt hole.
3. The dual tube sediment sampler of claim 1 wherein: the sealing covers are provided with a left sealing cover and a right sealing cover, each sealing cover is in a shape of a semicircular one-side rectangle, a curve section of one semicircular side is connected with the rectangle side, and a round hole is formed in the end of the rectangle side of each sealing cover; two pairs of symmetrical sealing cover positioning metal strips are welded on the inner side of the bottom of the outer cylinder, a metal cylinder is welded between each pair of sealing cover positioning metal strips, and the metal cylinder penetrates through the round hole of the sealing cover.
4. The dual tube sediment sampler of claim 1 wherein: two short metal strips are symmetrically welded on the outer side of the wall of the inner cylinder, and each short metal strip is connected with a sealing cover on the corresponding side of the short metal strip through a steel wire rope welded on the sealing cover; the steel wire rope is in a loose state when the double-pipe bottom mud sampler drills down, and is in a tensioning state when the double-pipe bottom mud sampler lifts up.
5. The dual tube sediment sampler of claim 1 wherein: the bottom of the outer cylinder is provided with a bent part; when the double-tube bottom mud sampler is lifted, the edges of the straight line segments of the two sealing covers are tightly sealed; when the double-tube bottom mud sampler drills down, the sealing cover is bent and blocked by the bottom of the outer cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057652.2A CN106644571B (en) | 2017-01-23 | 2017-01-23 | Double-tube bottom mud sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057652.2A CN106644571B (en) | 2017-01-23 | 2017-01-23 | Double-tube bottom mud sampler |
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| CN106644571A CN106644571A (en) | 2017-05-10 |
| CN106644571B true CN106644571B (en) | 2023-05-23 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796647B (en) * | 2017-10-17 | 2019-12-31 | 河海大学 | Soil sampler and sampling method thereof |
| CN111337303B (en) * | 2018-12-24 | 2023-03-10 | 东华理工大学 | Sludge in-situ sampling method |
| CN113495014B (en) * | 2021-06-15 | 2022-12-09 | 中国海洋大学 | A vibrating gravity sampler for geotechnical parameter normal position test |
Family Cites Families (9)
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| JP4128829B2 (en) * | 2002-08-30 | 2008-07-30 | 東亜ディーケーケー株式会社 | Sample water pretreatment equipment |
| KR20060074449A (en) * | 2004-12-27 | 2006-07-03 | 주식회사 포스코 | Sludge sampling apparatus |
| CN102042914B (en) * | 2009-10-14 | 2013-02-20 | 中国石油天然气集团公司 | Inner and outer cylinder type lake bottom mud sampler |
| CN101793635B (en) * | 2009-12-18 | 2011-09-07 | 杭州电子科技大学 | Shallow water low-disturbed sediment sampler |
| CN102928252B (en) * | 2012-10-25 | 2014-12-10 | 浙江大学 | Double-layer cylinder walled type underwater sediment sampler |
| CN103712824A (en) * | 2013-12-24 | 2014-04-09 | 镇江山水湾生态农业开发有限公司 | Columnar sediment sampling device for shallow water body |
| CN103900851B (en) * | 2014-04-04 | 2015-12-30 | 中国科学院东北地理与农业生态研究所 | Bottom mud in lake sampling thief |
| CN205246388U (en) * | 2015-12-23 | 2016-05-18 | 北京东方新星石化工程股份有限公司 | Mud sampling equipment |
| CN206488947U (en) * | 2017-01-23 | 2017-09-12 | 浙江省水利水电勘测设计院 | Two-tube sediment sampler |
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2017
- 2017-01-23 CN CN201710057652.2A patent/CN106644571B/en active Active
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| Title |
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| 张鑫 ; 栾振东 ; 阎军 ; 陈长安 ; .深海沉积物超长取样系统研究进展.海洋地质前沿.2012,(12),第40-45页. * |
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