CN114295411A - Get device of sewage and silt under water - Google Patents
Get device of sewage and silt under water Download PDFInfo
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- CN114295411A CN114295411A CN202111611328.3A CN202111611328A CN114295411A CN 114295411 A CN114295411 A CN 114295411A CN 202111611328 A CN202111611328 A CN 202111611328A CN 114295411 A CN114295411 A CN 114295411A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000010865 sewage Substances 0.000 title claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 83
- 239000010802 sludge Substances 0.000 claims abstract description 51
- 230000005484 gravity Effects 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 7
- 238000005553 drilling Methods 0.000 claims 1
- 239000010813 municipal solid waste Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 241000283984 Rodentia Species 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 241000124033 Salix Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Abstract
The invention discloses a device for taking sewage and sludge underwater, which comprises a sampling cylinder, wherein the sampling cylinder is divided into a plurality of closed water taking sections from top to bottom by a baffle plate, each water taking section is provided with a sampling hole and an air outlet, the air outlet is connected with a high-pressure air pump through an air pipeline, the sampling hole is provided with a first electromagnetic valve for controlling the sampling hole to be opened and closed, the lower end of the sampling cylinder is fixedly connected with a gravity device, and a fixing plate is fixedly connected below the gravity device.
Description
Technical Field
The invention relates to a device for taking sewage and sludge underwater, belonging to the technical field of underwater sampling.
Background
Under the rapid development of the industry, environmental management is also increasingly important, in the water pollution treatment process, sewage needs to be treated, sludge needs to be treated, the sludge treatment is mainly realized by adding a solidified material into the sludge, and the water content of the sludge is greatly reduced through the physical and chemical reaction between sludge particles and the solidified material, so that the treated sludge obtains enough strength. Therefore, the component analysis of the underwater sludge is an important part of research, underwater sludge samples at different depths are analyzed, the content of heavy metals and other pollutants in the underwater sludge samples can be analyzed, and a more complete treatment scheme is made. Meanwhile, the sewage coexisting with the sludge also has a great influence on the properties of the sludge, and the research on the sewage is also needed. In order to study the composition of the sludge and sewage and the solidification of the sludge, the sludge and sewage at the bottom of the water must be collected. Common silt sampling mode divide into artifical sampling and equipment collection, sampling equipment has grab bucket formula sample thief, this sample thief is the grab bucket is connected in the one end of rope, sink into the bottom with the grab bucket, the grab bucket snatchs silt, then go up the surface of water through rope cable, sample, but this sampling mode, the sampling volume is little, the silt of sampling is only submarine upper silt, nevertheless silt is because the deposition throughout the year, its top layer silt does not possess the representativeness, and snatch the back, silt in the grab bucket is under the rivers impact, can run off in a large number, and this equipment only can be to its silt sample, can't sample its sewage, especially when meeting submarine rubbish and stone, can't normally snatch silt at all.
In addition, the invention is also like the Chinese invention CN 111337303A, the patent name is 'a sludge in-situ sampling method', the patent uses a sampler with a multi-stage sampling cylinder which is in threaded connection with each other, a top plate is arranged on the sampling cylinder at the top end, a sampling drill bit is provided with a plurality of arc shovels, the arc shovels are hinged with the sampling at the bottom end, the inner sides of two adjacent arc shovels are both connected with guy cables, the guy cables penetrate through corresponding guy cable pore passages to be connected to guy cable fixing devices on the top plate, and after each guy cable is tensioned, the arc shovels close and block the bottom end of the sampling cylinder. The sampling drill bit of the device is an arc shovel, one end of the arc shovel is hinged with the bottom end of the bottommost sampling cylinder, the bottom of the sampling cylinder is closed by pulling with a guy cable, the lower end of the arc shovel is hinged in actual operation, the edge of the arc shovel is also wrapped with rubber, the hinged arc shovel can rock along with water flow, the sampling cylinder cannot be closed when contacting with underwater sludge or opened at the bottom end of a sampling device in a divergent mode, if the sampling cylinder falls into the bottom, the sampling cylinder falls backward due to the flowing of the water flow and the obstruction of underwater garbage, the sampling cylinder just falls into a semi-closed or closed state, the guy cable cannot be pulled to normally sample, the whole device can be toppled over, even if the underwater environment is completely static, and each arc shovel happens to be in a divergent opening state at the bottom end, the sampling drill bit can only dig the surface soil of the underwater sludge, and the effect of downward digging can not be realized, and once meeting rocks or rubbish, clamp between two circular arc boards, just can't seal the sampling tube, hardly apply to in the actual operation, therefore, the prior art needs further improvement.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a device which can take sewage in sections or sludge at different depths.
In order to solve the technical problem, the invention provides a device for taking sewage and sludge underwater, which comprises a sampling cylinder, wherein the sampling cylinder is divided into a plurality of closed water taking sections from top to bottom by a baffle plate, each water taking section is provided with a sampling hole and an air outlet, the air outlet is connected with an air pump through an air pipeline, and the sampling hole is provided with a first electromagnetic valve for controlling the sampling hole to be opened and closed; the lower part of the sampling cylinder is sleeved with a bearing, the bearing is sleeved with a second sleeve, the upper part of the second sleeve is sleeved with a push type impeller, the lower part of the second sleeve is meshed with a gear on the outer side of the second sleeve, the gear is driven by at least one second motor, and the second motor is fixed on a gravity device; gravity device is connected to the bottom of sampler barrel, gravity device bottom is equipped with the decurrent drill bit of head, the drill bit passes through the support to be fixed on gravity device, the support includes the fixed plate, fixed plate and gravity device fixed connection, the drill bit passes through rotary rod connection with the output of first motor, first sleeve is established to the outer slip cap of rotary rod, the first telescopic outside is connected with the output of first pneumatic cylinder, first motor, first pneumatic cylinder is fixed in the bottom surface of fixed plate, first sleeve connects corresponding quantity's break shovel through a plurality of connecting rods, the connecting rod is connected to the inboard of break shovel, first fixed block is connected in the outside of break shovel, wear to be equipped with many detachable on the first fixed block and get the mud pipe, the connecting rod is worn to locate in spacing frame, spacing frame is fixed in on solid fixed ring, gu fixed ring passes through the pole setting and is connected with the fixed plate, get the upper end coupling hose of mud pipe.
Preferably, the lower end of the mud taking pipe and the lower end of the break shovel are on the same horizontal plane.
Preferably, the top of the sampling tube is provided with a hauling rope, and the side wall of the sampling tube is provided with a groove for hiding an electric circuit and a pipeline.
Preferably, the other end of the hose is provided with a water filtering device, and the water filtering device is water filtering cloth.
Preferably, the sampling hole is provided with a first electromagnetic valve for controlling the sampling hole to open and close; a second electromagnetic valve for controlling the opening and closing of the hose is arranged in the hose; and a third electromagnetic valve for controlling the opening and closing of the mud taking pipe is arranged at the lower end of the mud taking pipe.
Preferably, the mud taking pipe and the hose are provided with mud taking holes, and each mud taking hole is provided with a movable rubber sealing plug.
Preferably, the gravity device is a curved surface, the convex surface of the gravity device faces the drill bit, and the concave surface of the gravity device faces the sampling cylinder; the break shovel is the curved surface, and first fixed block is connected to its convex surface, and the connecting rod is connected to the concave surface.
Preferably, barbs with upward end parts are uniformly distributed on the inner side of the break shovel.
Preferably, the bottom of the sampling cylinder is provided with a protective cover for protecting the push-type impeller, the upper side and the lower side of the protective cover are respectively provided with a metal filter screen, and the metal filter screen on the upper side is fixedly connected with the sampling cylinder.
Preferably, the device also comprises a first high-pressure gas spray head for spraying the break shovel and a second high-pressure gas spray head for spraying the sampling hole.
More preferably, the number of the first high-pressure gas nozzles is two, one of the first high-pressure gas nozzles is connected with the first fixing block through the second fixing block, and the other one of the first high-pressure gas nozzles is fixed on the limiting frame.
The invention is provided with a sectional type sampling cylinder which can sample sewage with different water levels, meanwhile, a second high-pressure gas spray nozzle is arranged at a sampling hole to prevent underwater garbage from being blocked, the invention is also provided with a push type impeller to accelerate the equipment to fall, a gravity device is in a semicircular shape to reduce the resistance and ensure the falling stability, the invention is also provided with a break shovel, one side surface of the break shovel is provided with a mud taking pipe, the mud taking pipe is inserted into underwater silt along with the downward force of the break shovel, the underwater silt enters the mud taking pipe due to the falling force of the break shovel, meanwhile, the break shovel can turn over the garbage in the underwater silt along with hard soil and dig downwards to promote a drill bit to move downwards, the mud taking pipe collects silt samples along with the lower part of the silt along with the break shovel, and the upper end of a hose connected with the mud taking pipe after the collection is finished, the sludge at the uppermost layer is taken, the lower end of the sludge taking pipe is the sludge at the bottommost layer, so that the sampling at different depths can be realized, and the sludge taking pipe and the hose can be detached to facilitate cleaning.
Drawings
FIG. 1 is a schematic structural view of an apparatus for taking sewage and sludge underwater according to the present invention;
FIG. 2 is a schematic structural view of a sampling tube;
FIG. 3 is an enlarged view of portion A of FIG. 1;
FIG. 4 is a schematic view of the position of the drill bit;
FIG. 5 is a schematic structural view of a mud pipe;
FIG. 6 is a schematic view of the structure of the hose;
FIG. 7 is a bottom view of the sampling tube;
fig. 8 is a schematic structural view of the first fixing block.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1-8, the sewage and sludge sampling device provided by the present invention comprises a sampling tube 1, wherein the sampling tube 1 is divided into four closed water intake sections 101 from top to bottom by a baffle 2, each water intake section 101 is provided with a sampling hole 3 and an air outlet 31, the air outlet 31 is connected with a high pressure air pump through an air pipeline 32, the sampling hole 3 is provided with a first electromagnetic valve 4 for controlling the opening and closing of the sampling tube, the lower end of the sampling tube 1 is fixedly connected with a gravity device 5, the lower part of the gravity device 5 is fixedly connected with a fixing plate 6, the center position of the circular axial surface of the lower plate surface of the fixing plate 6 is connected with a first motor 7, the first motor 7 is connected with a drill bit 9 through a rotating rod 8 and drives the drill bit 9 to rotate, the drill bit 9 is vertically downward, the rotating rod 8 is sleeved with a first sleeve 10 in a sliding manner, the outer side of the first sleeve 10 is connected with a first hydraulic cylinder 11, the cylinder body of the first hydraulic cylinder 11 is connected with the lower plate surface of the fixing plate 6, the end part of a telescopic rod of a first hydraulic cylinder 11 is connected with the outer side surface of a first sleeve 10, the first sleeve 10 is also connected with a corresponding number of break shovels 13 through a plurality of connecting rods 12, a first fixed block 14 is also arranged on the convex cambered surface of the break shovels 13, three detachable mud taking pipes 15 are arranged on the first fixed block 14 in a penetrating way, a limit frame 16 which can be used for the connecting rods 12 to move up and down is further sleeved on the connecting rods 12, the limit frame 16 is vertically arranged, the lower parts of all the limit frames 16 are connected with a fixed ring 17, the fixed ring 17 is connected with a fixed plate 6 through a vertical rod 35, the upper end of the vertical rod 35 is connected with a fixed circular plate 6, the lower end of the vertical rod 35 is connected with the fixed ring 17, the fixed ring 17 is sleeved outside a drill bit 9 and has a gap with the drill bit 9, the fixed ring 17 is parallel to the plane of the fixed plate 6, the mud taking pipes 15 are straight pipes, the mud taking pipes 15 are vertically arranged, the upper ends of the mud taking pipes are connected with a hose 18 through threads, one end of a hose 18 is in threaded connection with the upper end of the sludge taking pipe 15, the other end of the hose 18 is connected with a water filtering device 1801, a second electromagnetic valve 1802 is further arranged in the hose 18 and adjacent to the water filtering device 1801, a third electromagnetic valve 1501 is arranged at the lower end of the sludge taking pipe 15, a second fixing block 19 is further arranged on the first fixing block 14, a first high-pressure gas nozzle 20 is arranged on the second fixing block 19 and the limiting frame 16, and the opening of the first high-pressure gas nozzle 20 faces the lower end of the sludge taking pipe 15. Sampling tube 1 be cylinder tubular structure, 1 upper end of this sampling tube is sealed, and the lower extreme passes through gravity device 5 to be sealed, this gravity device 5 is semicircle form and opening up, 5 concave surface bottoms of lower extreme fixed connection gravity device of sampling tube 1, 6 axial plane centers of 5 convex surface tops fixed connection fixed plates of gravity device.
When the device is used, the device is put under water, the position of the break shovel 13 faces downwards, the switch of the second motor 23 is turned on, the second motor 23 drives the gear 24 to rotate, the gear 24 drives the second sleeve 22 to rotate through the rodent of the second sleeve 22, the second sleeve 22 drives the push type impeller 25 to rotate, the push type impeller 25 rotates to accelerate the whole device towards the water bottom, in the advancing process, the high-pressure air pump of the first high-pressure air nozzle 20 is turned on, the high-pressure air pump blows towards the mud taking pipe 15 and the break shovel 13 to prevent plastic bags, underwater garbage and other objects from being hung at the position of the break shovel 13 or the mud taking pipe 15 to influence later work, due to the propelling of the gravity device 5 and the push type impeller 25, the device falls into the water bottom quickly, when the drill bit 9 contacts the ground at the water bottom, the switch of the push type impeller 25 and the switch of the high-pressure air pump connected with the first high-pressure air nozzle are turned on, the switch of the first hydraulic cylinder 11 is opened, so that the telescopic rod of the first hydraulic cylinder 11 starts to contract and extend to drive the break shovel 13 to lift up and fall down to reciprocate, meanwhile, the second electromagnetic valve 1802 and the third electromagnetic valve 1501 are opened, when the break shovel 13 is inserted into sludge, the sludge taking pipe 15 can be inserted into the sludge along with the break shovel 13 downwards, the sludge is extruded into the sludge taking shovel, when the break shovel 13 is driven to rise along with the hydraulic cylinder, the sludge taking pipe 15 can be driven upwards, when the break shovel 13 is used, when the break shovel 13 moves upwards, the working range is not too large, when the break shovel 13 rises, a part of soil can be generated, including stones are turned upwards, so that the drill bit 9 can rapidly downwards, the drill bit 9 is prevented from being subjected to the resistance of other garbage such as stones and the like in the downwards process, the drill bit is difficult to normally downwards, and along with the continuous downwards movement of the drill bit 9, and along with the gravity pressure of the gravity device, the sludge taking pipe 15 can continuously downwards along with the break shovel 13, can collect a large amount of earth in getting mud pipe 15 way, if get mud pipe 15 after full, can directly get into hose 18, the water filtering device 1801 of hose 18 tip, go out water filtration, when the sample finishes the back, close second solenoid valve 1802 and third solenoid valve 1501, when opening first solenoid valve 4, open the high pressure gas pump of being connected with the gas pipeline, the gas outlet is given vent to anger, sewage gets into in sampler barrel 1 from sample hole 3, when sewage gets into sampler barrel 1, open second high pressure gas shower nozzle 26 and blow towards the sample hole 3 position, prevent the stone, rubbish etc. blocks up sampler hole 3. In addition, the mud taking pipe 15 can be detached from the hose 18 when cleaning and sampling, the mud taking pipe 15 can be taken down from the first fixing block 14, the sealing plug on the mud taking hole 27 is opened, sampling is carried out one by one, mud on the upper end of the hose 18 is the mud on the upper layer of the water bottom ground, mud on the lowest layer is located at the end of the mud taking pipe 15, when cleaning is needed, the mud taking pipe can be directly connected with a water pipe for flushing, moving equipment is not needed, and cleaning is convenient.
Claims (10)
1. The device for taking sewage and sludge underwater is characterized by comprising a sampling cylinder (1), wherein the sampling cylinder (1) is divided into a plurality of closed water taking sections (101) from top to bottom by a baffle (2), each water taking section (101) is provided with a sampling hole (3) and an air outlet (31), the air outlet (31) is connected with an air pump through an air pipeline (32), and the sampling hole (3) is provided with a first electromagnetic valve (4) for controlling the sampling hole to be opened and closed; a bearing (21) is sleeved outside the lower part of the sampling tube (1), a second sleeve (22) is sleeved outside the bearing (21), a push type impeller (25) is sleeved outside the upper part of the second sleeve (22), the lower part of the second sleeve (22) is meshed with a gear (24) on the outer side of the second sleeve, the gear (24) is driven by at least one second motor (23), and the second motor (23) is fixed on a gravity device (5); the bottom of the sampling tube (1) is connected with a gravity device (5), the bottom of the gravity device (5) is provided with a drill bit (9) with a downward head, the drill bit (9) is fixed on the gravity device (5) through a support, the support comprises a fixing plate (6), the fixing plate (6) is fixedly connected with the gravity device (5), the drill bit (9) is connected with the output end of a first motor (7) through a rotating rod (8), the rotating rod (8) is externally sleeved with a first sleeve (10) in a sliding manner, the outer side of the first sleeve (10) is connected with the output end of a first hydraulic cylinder (11), the first motor (7) and the first hydraulic cylinder (11) are fixed on the bottom surface of the fixing plate (6), the first sleeve (10) is connected with a corresponding number of shovels (13) through a plurality of connecting rods (12), the inner side of each ripping shovel (13) is connected with the connecting rods (12), the outer side of each ripping shovel (13) is connected with a first fixing block (14), wear to be equipped with many detachable on first fixed block (14) and get mud pipe (15), connecting rod (12) wear to locate spacing frame (16), and on spacing frame (16) were fixed in solid fixed ring (17), solid fixed ring (17) were connected with fixed plate (6) through pole setting (35), got the upper end coupling hose (18) of mud pipe (15).
2. An underwater sewage and sludge extraction apparatus as claimed in claim 1 in which the lower end of the sludge extraction pipe (15) is level with the lower end of the ripper blade (13).
3. Device for underwater extraction of sewage and sludge according to claim 1, characterised in that the sampling tube (1) is provided with a hauling cable (28) at the top and grooves (30) in the side walls for hiding electrical lines, pipes.
4. An underwater sewage and sludge removal apparatus as claimed in claim 1 wherein the other end of the hose (18) is provided with a water filtration device (1801), and the water filtration device (1801) is a water filtration cloth.
5. An apparatus for underwater extraction of sewage and sludge according to claim 1, characterized in that the sampling hole (3) is provided with a first solenoid valve (4) for controlling the opening and closing thereof; a second electromagnetic valve (1802) for controlling the opening and closing of the hose (18) is arranged in the hose; and a third electromagnetic valve (1501) for controlling the opening and closing of the mud taking pipe (15) is arranged at the lower end of the mud taking pipe.
6. An underwater sewage and sludge removal apparatus as claimed in claim 1, wherein the sludge removal pipe (15) and the hose (18) are provided with sludge removal holes (27), and each sludge removal hole (27) is provided with a movable rubber sealing plug.
7. An apparatus for underwater extraction of sewage and sludge according to claim 1, characterised in that the gravitational means (5) are curved with the convex side facing the drilling head (9) and the concave side facing the sampling cylinder (1); the break shovel (13) is the curved surface, and first fixed block (13) are connected to its convex surface, and connecting rod (12) are connected to the concave surface.
8. An underwater sewage and sludge extraction apparatus as claimed in claim 1 or 7 wherein the inside of the break shovel (13) is provided with barbs (27) with upward ends.
9. The underwater sewage and sludge taking device as claimed in claim 1, wherein the bottom of the sampling cylinder (1) is provided with a protective cover (33) for protecting the impeller (25), the upper side and the lower side of the protective cover (33) are respectively provided with a metal filter screen (34), and the metal filter screen (34) at the upper side is fixedly connected with the sampling cylinder (1).
10. An apparatus for underwater extraction of sewage and sludge as claimed in claim 1, further comprising a first high pressure gas spray head (20) for spraying the ripper blade (13) and a second high pressure gas spray head (26) for spraying the sampling hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111611328.3A CN114295411B (en) | 2021-12-27 | 2021-12-27 | Device for underwater sewage and sludge taking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111611328.3A CN114295411B (en) | 2021-12-27 | 2021-12-27 | Device for underwater sewage and sludge taking |
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| Publication Number | Publication Date |
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| CN114295411A true CN114295411A (en) | 2022-04-08 |
| CN114295411B CN114295411B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111611328.3A Active CN114295411B (en) | 2021-12-27 | 2021-12-27 | Device for underwater sewage and sludge taking |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114923739A (en) * | 2022-05-20 | 2022-08-19 | 山东省威海基础工程公司 | Intelligent multiple sampling device for gold mine geological exploration |
| CN116793751A (en) * | 2023-08-21 | 2023-09-22 | 山西农业大学 | Improved mud sampler |
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| CN215115301U (en) * | 2021-01-25 | 2021-12-10 | 金乡县金泉污水处理有限公司 | Subside silt sampling device |
| CN113155522A (en) * | 2021-04-25 | 2021-07-23 | 江苏省地质勘查技术院 | Drill rod for sample collection, comprehensive sample collection device and working method thereof |
| CN113358420A (en) * | 2021-06-03 | 2021-09-07 | 中电建生态环境集团有限公司 | River mud stratified sampling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114923739A (en) * | 2022-05-20 | 2022-08-19 | 山东省威海基础工程公司 | Intelligent multiple sampling device for gold mine geological exploration |
| CN116793751A (en) * | 2023-08-21 | 2023-09-22 | 山西农业大学 | Improved mud sampler |
| CN116793751B (en) * | 2023-08-21 | 2023-11-14 | 山西农业大学 | Improved mud sampler |
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