CN112730787B - Buoy for hydraulic engineering detection - Google Patents
Buoy for hydraulic engineering detection Download PDFInfo
- Publication number
- CN112730787B CN112730787B CN202110036023.8A CN202110036023A CN112730787B CN 112730787 B CN112730787 B CN 112730787B CN 202110036023 A CN202110036023 A CN 202110036023A CN 112730787 B CN112730787 B CN 112730787B
- Authority
- CN
- China
- Prior art keywords
- sealing cover
- lifting rack
- fixedly connected
- floating plate
- fixed shell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
-
- 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
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
- B63B2022/006—Buoys specially adapted for measuring or watch purposes
Abstract
The invention discloses a buoy for hydraulic engineering detection, which comprises a floating plate, wherein a longitudinal through hole is formed in the floating plate, a fixed shell is arranged above the longitudinal through hole, the fixed shell is in a hollow rectangular column shape with openings at the upper end and the lower end, the bottom end of the fixed shell is fixed at the upper end of the floating plate, one side of the fixed shell is fixedly connected with a rotating motor, an output shaft of the rotating motor is in transmission connection with a rotating gear arranged in the fixed shell, a lifting rack is arranged in the fixed shell, and the rotating gear is in meshed connection with teeth on the side face of the lifting rack; the lifting rack bottom passes through the longitudinal through hole and then is fixedly connected with the acquisition assembly through the fixing frame, the switch assembly is arranged above the acquisition assembly, and the switch assembly is in sliding connection with the side face of the lifting rack. The invention can collect water sample, which is convenient for hydraulic engineering construction work and brings convenience for construction operation.
Description
Technical Field
The invention relates to the field of hydraulic engineering, in particular to a buoy for hydraulic engineering detection.
Background
Buoy, which is anchored in a designated position to mark the range of the navigation channel, to indicate the shoal, the navigation obstacle or the navigation aid mark on the water surface to express special purpose, the buoy has the most quantity in the navigation mark, the application is wide, the buoy is arranged at the place where the fixed navigation mark is difficult or not easy to be set up, the buoy has the function of marking the shoal of the navigation channel or the obstacle endangering the navigation safety, the buoy with the lamp is called the lamp buoy, the navigation aid is used in the navigation aid water area at day and night, and some buoys are also provided with radar responders, radio direction marks, fog warning signals, marine survey instruments and other devices.
Before hydraulic engineering construction, the water quality of the area to be constructed is required to be detected, and microorganisms contained in water flows with different depths are different, so that the water flows with different depths of the area to be constructed are required to be detected, and people can use different construction materials according to different water qualities, such as cement with different types according to different water qualities; the existing buoy for hydraulic engineering only plays a role in planning a construction area and warning a past ship, has a single function, and cannot meet the use requirements of people; therefore, it is necessary to research a buoy for hydraulic engineering detection to meet the detection requirement of people on construction water quality.
Disclosure of Invention
The invention aims to solve the problems and provide the buoy for hydraulic engineering detection, which has a simple structure and is convenient to use.
In order to achieve the above object, the technical scheme of the present invention is as follows:
the buoy for hydraulic engineering detection comprises a floating plate, wherein a longitudinal through hole is formed in the floating plate, a fixed shell is arranged above the longitudinal through hole, the fixed shell is in a hollow rectangular column shape with openings at the upper end and the lower end, the bottom end of the fixed shell is fixed at the upper end of the floating plate, one side of the fixed shell is fixedly connected with a rotating motor, an output shaft of the rotating motor is in transmission connection with a rotating gear arranged in the fixed shell, a lifting rack is arranged in the fixed shell, and the rotating gear is in meshed connection with teeth on the side face of the lifting rack; the lifting rack bottom passes through the longitudinal through hole and then is fixedly connected with the acquisition assembly through the fixing frame, the switch assembly is arranged above the acquisition assembly, and the switch assembly is in sliding connection with the side face of the lifting rack.
Further, the collecting assembly comprises a collecting pipe, a first limiting ring is fixedly connected to the inner side wall of the top end of the collecting pipe, a second limiting ring is fixedly connected to the inner side wall of the bottom end of the collecting pipe, the top end of the first limiting ring is in pin shaft connection with one end of the first sealing cover, and the top end of the second limiting ring is in pin shaft connection with one end of the second sealing cover; the first sealed bottom of lid is provided with first engaging lug, and the second sealed top of lid is provided with the second engaging lug, is provided with the connecting rod between first engaging lug and the second engaging lug and first engaging lug, second engaging lug are connected with the upper and lower both ends round pin hub connection of connecting rod respectively.
Further, a first magnet is arranged at one end of the first sealing cover, which is far away from the pin shaft connecting end of the first limiting ring, and one end of the second sealing cover, which is far away from the pin shaft connecting end of the second limiting ring, and a placing groove is arranged on each of the first limiting ring and the second limiting ring, and a second magnet is embedded in the placing groove; when the collecting pipe is in a closed state, the first magnet is attracted with the second magnet;
further, the bottom end of the second sealing cover is provided with a third connecting lug, the inner wall of the second limiting ring is provided with a fourth connecting lug, and a tension spring is arranged between the fourth connecting lug and the third connecting lug.
Further, the switch component comprises a sliding block, a sliding rod and a floating box; one side of the lifting rack is provided with a necking chute along the height direction of the lifting rack, a sliding block is embedded in the necking chute and can longitudinally slide relative to the necking chute, one end of the sliding rod is connected with the sliding block, the other end of the sliding rod penetrates out of the necking chute and is upwards bent, the floating box is hollow, and a plurality of water inlet through holes are formed in the side face of the floating box; the floating box is connected with the sliding rod through a mounting rope; the top end of the first sealing cover is provided with a mounting ring; when the first sealing cover is in an open state, one end of the sliding rod in a bent shape stretches into the mounting ring.
Furthermore, the floating box is made of foam, and a water inlet plug capable of controlling the opening and closing states of the water inlet through hole is detachably connected in the water inlet through hole on the outer side wall of the floating box.
Further, a walking assembly is arranged on the outer side of the floating plate; the four walking components are arranged on the periphery of the floating plate at equal intervals; the walking assembly comprises a walking motor and a walking impeller, the walking motor is fixedly connected in a placement cavity inside the floating plate, an output shaft of the walking motor penetrates through the lateral wall of the outer side of the floating plate and is fixedly connected with the central position of the walking impeller, and the axial direction of the walking impeller is perpendicular to the height direction of the floating plate.
Further, fixedly connected with battery, mounting bracket on the kickboard, fixedly connected with signal lamp on the mounting bracket, signal lamp and battery electric connection, battery and walking motor electric connection.
Further, a traction frame is fixedly connected to the floating plate, and an anchor rope for connection and fixation is wound on the outer side of the traction frame.
Compared with the prior art, the invention has the advantages and positive effects that:
when the water sample is collected, the rotating motor is controlled to rotate, the rotating gear drives the lifting rack to descend, the collecting assembly is controlled to collect through the switch assembly after the lifting rack descends to the depth to be measured, and the lifting rack is driven to ascend through the reverse rotation of the rotating motor after the collecting assembly finishes collecting the water sample at the depth, so that the collecting assembly and the collected water sample are brought to the lower end of the floating plate, and water quality information of the depth to be measured can be obtained through detection of the collected water sample by people, thereby facilitating material selection operation in hydraulic engineering construction; the buoy is simple, convenient and quick to operate, the use function of the buoy is increased, and the use effect of the buoy is further improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a partial cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a block diagram of an open state of the collection assembly;
FIG. 5 is a diagram of the closed state of the acquisition assembly;
FIG. 6 is a cross-sectional view of the flotation tank;
fig. 7 is a schematic structural view of the walking assembly.
Description of the embodiments
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. All other embodiments, modifications, equivalents, improvements, etc., which are apparent to those skilled in the art without the benefit of this disclosure, are intended to be included within the scope of this invention.
As shown in fig. 1 to 7, the embodiment discloses a buoy for hydraulic engineering detection, which comprises a floating plate 1, wherein a longitudinal through hole 102 is formed in the floating plate 1, a fixed shell 2 is arranged above the longitudinal through hole 102, the fixed shell 2 is in a hollow rectangular column shape with openings at the upper end and the lower end, the bottom end of the fixed shell 2 is fixed at the upper end of the floating plate 1, a rotating motor 3 is fixedly connected to one side of the fixed shell 2, an output shaft of the rotating motor 3 is in transmission connection with a rotating gear 5 arranged in the fixed shell 2, a lifting rack 4 is arranged in the fixed shell 2, and the rotating gear 5 is in meshed connection with teeth on the side face of the lifting rack 4; the bottom end of the lifting rack 4 passes through the longitudinal through hole 102 and is fixedly connected with a collection assembly through the fixing frame 22, a switch assembly is arranged above the collection assembly, and the switch assembly is in sliding connection with the side face of the lifting rack 4.
When the water sample is collected, the rotating motor is controlled to rotate, the rotating gear drives the lifting rack to descend, the collecting assembly is controlled to collect through the switch assembly after the lifting rack descends to the depth to be measured, and the lifting rack is driven to ascend through the reverse rotation of the rotating motor after the collecting assembly finishes collecting the water sample at the depth, so that the collecting assembly and the collected water sample are brought to the lower end of the floating plate, and water quality information of the depth to be measured can be obtained through detection of the collected water sample by people, thereby facilitating material selection operation in hydraulic engineering construction; the buoy is simple, convenient and quick to operate, the use function of the buoy is increased, and the use effect of the buoy is further improved.
The collecting assembly comprises a collecting pipe 6, a first limiting ring 601 is fixedly connected to the inner side wall of the top end of the collecting pipe 6, a second limiting ring 602 is fixedly connected to the inner side wall of the bottom end of the collecting pipe 6, the top end of the first limiting ring 601 is in pin shaft connection with one end of a first sealing cover 7, and the top end of the second limiting ring 602 is in pin shaft connection with one end of a second sealing cover 8; the bottom of the first sealing cover 7 is provided with a first connecting lug, the top of the second sealing cover 8 is provided with a second connecting lug, a connecting rod 15 is arranged between the first connecting lug and the second connecting lug, and the first connecting lug and the second connecting lug are respectively connected with the upper end and the lower end of the connecting rod 15 through pin shafts.
The first magnet 12 is arranged at one end of the first sealing cover 7, which is far away from the pin shaft connecting end of the first limiting ring 601, and one end of the second sealing cover 8, which is far away from the pin shaft connecting end of the second limiting ring 602, and the first limiting ring 601 and the second limiting ring 602 are respectively provided with a placing groove, and the placing grooves are internally embedded with the second magnet 13; when the collection tube 6 is in the closed state, the first magnet 12 and the second magnet 13 are attracted.
The bottom of the second sealing cover 8 is provided with a third connecting lug, the inner side wall of the second limiting ring 602 is provided with a fourth connecting lug, and a tension spring 14 is arranged between the fourth connecting lug and the third connecting lug.
When the lifting rack descends, the switch assembly controls the first sealing cover to keep an open state, the first sealing cover drives the second sealing cover to keep an open state through the connecting rod, water flows through the collecting pipe when the lifting rack descends, when the lifting rack reaches the depth to be detected, the switch assembly is disconnected with the first sealing cover, the second sealing cover is closed under the action of gravity and the tension spring, meanwhile, the second sealing cover drives the first sealing cover to carry out closing operation under the action of the connecting rod, after the first sealing cover and the second sealing cover are closed, the first magnet is attracted with the second magnet, and the collecting pipe, the first sealing cover and the second sealing cover form a sealing cavity, so that the collecting operation of water samples is realized, and the using effect of the lifting rack is effectively improved.
The switch assembly comprises a sliding block 11, a sliding rod 10 and a floating box 9; a necking chute 401 is arranged on one side of the lifting rack 4 along the height direction of the lifting rack 4, a sliding block 11 is embedded in the necking chute 401 and can longitudinally slide along the necking chute 401, one end of a sliding rod 10 is connected with the sliding block, the other end of the sliding rod 10 penetrates out of the necking chute 401 and is upwards bent, the floating box 9 is hollow, and a plurality of water inlet through holes 901 are formed in the side face of the floating box 9; the floating box 9 is connected with the slide bar 10 through a mounting rope 21; the top end of the first sealing cover 7 is provided with a mounting ring 701; when the first sealing cover 7 is in an open state, one end of the sliding rod 10 in a bent shape extends into the mounting ring 701.
The floating box 9 is made of foam, and a water inlet plug 902 capable of controlling the opening and closing states of the water inlet through hole 901 is detachably connected in the water inlet through hole 901 on the outer side wall of the floating box 9. The design of the water inlet plug can regulate and control the water inlet speed of the floating box.
When the lifting rack descends, the floating box floats above the sliding rod under the action of buoyancy, meanwhile, the sliding rod is driven by the installation rope under the action of buoyancy, the sliding block is positioned at the top end of the necking sliding groove, at the moment, one end of the sliding rod, which is far away from the sliding block, stretches into the installation ring, and the first sealing cover is pulled; after the lifting rack stops descending, water flow enters the floating box from the water inlet through hole of the floating box, the floating box sinks after being filled with water, the sliding rod and the sliding block are driven to slide downwards relative to the necking sliding groove under the action of the mounting rope, at the moment, one end of the sliding rod, which is far away from the sliding block, comes out of the mounting ring, and the pulling action on the first sealing cover is relieved, so that the first sealing cover performs sealing operation along with the second sealing cover; the operation is simple, convenient and quick, the on-off control operation of the acquisition assembly can be realized without any power mechanism, and the use effect of the invention is further improved.
The outer side of the floating plate 1 is provided with a traveling assembly; the four walking components are arranged on the periphery of the floating plate 1 at equal intervals; the walking assembly comprises a walking motor 20 and a walking impeller 19, wherein the walking motor 20 is fixedly connected in a placement cavity 101 positioned in the floating plate 1, an output shaft of the walking motor 20 penetrates through the lateral wall of the outer side of the floating plate 1 and is fixedly connected with the central position of the walking impeller 19, and the axial direction of the walking impeller 19 is perpendicular to the height direction of the floating plate 1.
The traveling assembly can drive the buoy to move on the water surface through the rotation of the traveling impeller, and the buoy can perform different actions on the water surface through controlling different traveling assemblies, so that the use effect of the invention is further improved.
The floating plate 1 is fixedly connected with a storage battery 16 and a mounting frame 17, the mounting frame 17 is fixedly connected with a signal lamp 18, the signal lamp 18 is electrically connected with the storage battery 16, and the storage battery 16 is electrically connected with a travelling motor 20. The floating plate 1 is fixedly connected with a traction frame 23, and an anchor rope 24 for connection and fixation is wound on the outer side of the traction frame 23.
The anchor cable can connect the buoys with each other so as to enclose the construction area, and meanwhile, the ship can be prevented from entering the construction area at night by the brightness of the signal lamp, so that the construction area is well protected, and the use effect of the invention is further improved.
Claims (5)
1. Buoy for hydraulic engineering detects, its characterized in that: the buoy comprises a floating plate, a longitudinal through hole is formed in the floating plate, a fixed shell is arranged above the longitudinal through hole, the fixed shell is in a hollow rectangular column shape with openings at the upper end and the lower end, the bottom end of the fixed shell is fixed at the upper end of the floating plate, one side of the fixed shell is fixedly connected with a rotating motor, an output shaft of the rotating motor is in transmission connection with a rotating gear arranged in the fixed shell, a lifting rack is arranged in the fixed shell, and the rotating gear is in meshed connection with teeth on the side face of the lifting rack; the bottom end of the lifting rack penetrates through the longitudinal through hole and is fixedly connected with the acquisition assembly through the fixing frame, a switch assembly is arranged above the acquisition assembly, and the switch assembly is in sliding connection with the side face of the lifting rack;
the collecting assembly comprises a collecting pipe, a first limiting ring is fixedly connected to the inner side wall of the top end of the collecting pipe, a second limiting ring is fixedly connected to the inner side wall of the bottom end of the collecting pipe, the top end of the first limiting ring is connected with one end pin shaft of a first sealing cover, and the top end of the second limiting ring is connected with one end pin shaft of a second sealing cover; the bottom end of the first sealing cover is provided with a first connecting lug, the top end of the second sealing cover is provided with a second connecting lug, a connecting rod is arranged between the first connecting lug and the second connecting lug, and the first connecting lug and the second connecting lug are respectively connected with the upper end pin shaft and the lower end pin shaft of the connecting rod;
the first sealing cover is far away from one end of the first sealing cover, which is connected with the pin shaft of the first limiting ring, and the second sealing cover is far away from one end of the second sealing cover, which is connected with the pin shaft of the second limiting ring, and the first limiting ring and the second limiting ring are respectively provided with a placing groove, and the placing grooves are internally embedded with the second magnets; when the collecting pipe is in a closed state, the first magnet is attracted with the second magnet;
the bottom end of the second sealing cover is provided with a third connecting lug, the inner wall of the second limiting ring is provided with a fourth connecting lug, and a tension spring is arranged between the fourth connecting lug and the third connecting lug;
the switch component comprises a sliding block, a sliding rod and a floating box; one side of the lifting rack is provided with a necking chute along the height direction of the lifting rack, a sliding block is embedded in the necking chute and can longitudinally slide along the necking chute, one end of the sliding rod is connected with the sliding block, the other end of the sliding rod penetrates out of the necking chute and is upwards bent, the floating box is hollow, and a plurality of water inlet through holes are formed in the side face of the floating box; the floating box is connected with the sliding rod through a mounting rope; the top end of the first sealing cover is provided with a mounting ring; when the first sealing cover is in an open state, one end of the sliding rod in a bent shape extends into the mounting ring;
when the lifting rack descends, the floating box floats above the sliding rod under the action of buoyancy, meanwhile, the sliding rod is driven by the installation rope under the action of buoyancy, the sliding block is positioned at the top end of the necking sliding groove, at the moment, one end of the sliding rod, which is far away from the sliding block, stretches into the installation ring, and the first sealing cover is pulled; after the lifting rack stops descending, water flows into the floating box from the water inlet through hole of the floating box, the floating box sinks after being filled with water, the sliding rod and the sliding block are driven to slide downwards relative to the necking sliding groove under the action of the mounting rope, at the moment, one end of the sliding rod, which is far away from the sliding block, comes out of the mounting ring, and the traction effect on the first sealing cover is relieved, so that the first sealing cover performs sealing operation along with the second sealing cover.
2. The hydraulic engineering detection buoy as set forth in claim 1, wherein: the floating box is made of foam, and a water inlet plug capable of controlling the opening and closing states of the water inlet through hole is detachably connected in the water inlet through hole on the outer side wall of the floating box.
3. The hydraulic engineering detection buoy as set forth in claim 2, wherein: the outer side of the floating plate is provided with a traveling assembly; the four walking components are arranged on the periphery of the floating plate at equal intervals; the walking assembly comprises a walking motor and a walking impeller, the walking motor is fixedly connected in a placement cavity inside the floating plate, an output shaft of the walking motor penetrates through the lateral wall of the outer side of the floating plate and is fixedly connected with the central position of the walking impeller, and the axial direction of the walking impeller is perpendicular to the height direction of the floating plate.
4. A hydraulic engineering inspection buoy according to claim 3, wherein: fixedly connected with battery, mounting bracket on the kickboard, fixedly connected with signal lamp on the mounting bracket, signal lamp and battery electric connection, battery and walking motor electric connection.
5. The hydraulic engineering detection buoy as set forth in claim 4, wherein: the floating plate is fixedly connected with a traction frame, and an anchor rope for connection and fixation is wound on the outer side of the traction frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110036023.8A CN112730787B (en) | 2021-01-12 | 2021-01-12 | Buoy for hydraulic engineering detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110036023.8A CN112730787B (en) | 2021-01-12 | 2021-01-12 | Buoy for hydraulic engineering detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112730787A CN112730787A (en) | 2021-04-30 |
| CN112730787B true CN112730787B (en) | 2023-07-25 |
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ID=75590950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110036023.8A Active CN112730787B (en) | 2021-01-12 | 2021-01-12 | Buoy for hydraulic engineering detection |
Country Status (1)
| Country | Link |
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| CN (1) | CN112730787B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114894990B (en) * | 2022-05-09 | 2024-01-19 | 河北省唐山水文勘测研究中心 | Three-dimensional sinking type water quality detection equipment and detection method |
Citations (6)
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|---|---|---|---|---|
| CN202869850U (en) * | 2012-09-17 | 2013-04-10 | 上海海洋大学 | Electric control closed water sampler |
| CN204283915U (en) * | 2014-11-24 | 2015-04-22 | 温岭市富莱欧机电有限公司 | Submersible pump |
| CN110954359A (en) * | 2019-05-07 | 2020-04-03 | 河海大学 | Automatic water sample collection device capable of freely controlling water depth |
| CN210803442U (en) * | 2019-09-16 | 2020-06-19 | 江西远鑫资源循环投资开发有限公司 | Environmental water quality testing instrument |
| CN111413143A (en) * | 2020-04-28 | 2020-07-14 | 北华航天工业学院 | Water quality sampler with remote sampling function |
| CN111829821A (en) * | 2019-04-13 | 2020-10-27 | 中交二公局第一工程有限公司 | Pile hole bottom mud sampling device |
-
2021
- 2021-01-12 CN CN202110036023.8A patent/CN112730787B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202869850U (en) * | 2012-09-17 | 2013-04-10 | 上海海洋大学 | Electric control closed water sampler |
| CN204283915U (en) * | 2014-11-24 | 2015-04-22 | 温岭市富莱欧机电有限公司 | Submersible pump |
| CN111829821A (en) * | 2019-04-13 | 2020-10-27 | 中交二公局第一工程有限公司 | Pile hole bottom mud sampling device |
| CN110954359A (en) * | 2019-05-07 | 2020-04-03 | 河海大学 | Automatic water sample collection device capable of freely controlling water depth |
| CN210803442U (en) * | 2019-09-16 | 2020-06-19 | 江西远鑫资源循环投资开发有限公司 | Environmental water quality testing instrument |
| CN111413143A (en) * | 2020-04-28 | 2020-07-14 | 北华航天工业学院 | Water quality sampler with remote sampling function |
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| Publication number | Publication date |
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| CN112730787A (en) | 2021-04-30 |
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