CN214793897U - Columnar sampler for lake bottom sediment - Google Patents
Columnar sampler for lake bottom sediment Download PDFInfo
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- CN214793897U CN214793897U CN202120613562.9U CN202120613562U CN214793897U CN 214793897 U CN214793897 U CN 214793897U CN 202120613562 U CN202120613562 U CN 202120613562U CN 214793897 U CN214793897 U CN 214793897U
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Abstract
The utility model discloses a columnar sampler for lake bottom sediment, which comprises a rope winding device, a worm gear lead screw lifter, a handle, a hollow support rod, a conical cylinder, an outer guide cylinder, a piston and a sampling cylinder with a closed top end, wherein the conical cylinder is fixedly arranged at the bottom end of the hollow support rod, the outer guide cylinder is fixedly arranged at the bottom end of the conical cylinder, the sampling cylinder is arranged in the outer guide cylinder, and the piston is arranged in the sampling cylinder in a vertical sliding manner; a handle is fixedly arranged on the outer wall of the top of the hollow supporting rod, a worm gear lead screw lifter for driving the sampling cylinder to slide up and down along the inner wall of the outer guide cylinder is fixed on the handle, the bottom end of a lead screw of the worm gear lead screw lifter sequentially penetrates through the hollow supporting rod and the conical cylinder to be fixedly connected with the sampling cylinder, a guide rail is fixed on the handle, a rope coiling device is fixedly arranged on the guide rail, and a fixed pulley is fixed at the top end of the lead screw of the worm gear lead screw lifter; the connecting rope of the rope winding device passes through the fixed pulley, and then a screw rod penetrating through the worm gear screw rod lifter extends to the inside of the sampling cylinder and is fixedly connected with the piston.
Description
The technical field is as follows:
the utility model relates to a sampler technical field, concretely relates to lakebed deposit column sampler.
Background art:
the lake sediment is an important reference object for researching lake water environment, and microorganisms, metal ions, nitrogen, phosphorus and other nutrient elements in the sediment have important influence on the lake bottom water environment, so that the method is particularly critical for researching the sediment.
However, for lakes in inner Mongolia areas, most of the lake water is deep, the demand on instruments is high, although the mechanism of a common sampling instrument is feasible and the technology is complete, the length of the instrument is limited, the sampling task of sediment deposits in deeper lakes in inner Mongolia areas cannot be met, the existing deep water sediment sampling instrument can only sample the surface layer of the sediment, a certain amount of sediment samples can be obtained, but key research indexes such as microbial community structures and interstitial water of the sediment can be damaged, and the purpose of sampling the sediment at the bottom under the condition of no disturbance and no damage can not be achieved.
The utility model has the following contents:
an object of the utility model is to provide a lakebed deposit column sampler.
The utility model discloses by following technical scheme implement: the columnar sampler for the sediment at the bottom of the lake comprises a rope winding device, a worm gear lead screw lifter, a handle, a hollow support rod, a conical cylinder, an outer guide cylinder, a piston and a sampling cylinder with a closed top end, wherein the conical cylinder is fixedly arranged at the bottom end of the hollow support rod, the outer guide cylinder is fixedly arranged at the bottom end of the conical cylinder, the sampling cylinder is arranged in the outer guide cylinder, the outer wall of the sampling cylinder is tightly attached to the inner wall of the outer guide cylinder, the inner wall of the sampling cylinder is a rough surface, and the piston is arranged in the sampling cylinder in a vertically sliding manner;
the handle is fixedly arranged on the outer wall of the top of the hollow supporting rod, the worm gear lead screw lifter for driving the sampling cylinder to slide up and down along the inner wall of the outer guide cylinder is fixed on the handle, the bottom end of a lead screw of the worm gear lead screw lifter sequentially penetrates through the hollow supporting rod, the conical cylinder and the sampling cylinder to be fixedly connected, a guide rail is fixed on the handle, a rope coiling device is fixedly arranged on the guide rail, and a fixed pulley is fixed at the top end of a lead screw of the worm gear lead screw lifter; and a connecting rope of the rope winding device passes through the fixed pulley, penetrates through a screw rod of the worm gear screw rod lifter, extends to the inside of the sampling cylinder, and is fixedly connected with the piston.
Further, the rope winding device comprises a supporting seat, a scroll, a motor and a tension sensor, the supporting seat is arranged on the guide rail in a sliding mode, the scroll is connected to the supporting seat in a rotating mode, one end of the scroll is fixedly connected with an output shaft of the motor, the motor is fixedly connected with the supporting seat, the connection rope is wound on the scroll, one end of the tension sensor is fixedly connected with the guide rail through a connecting plate, the other end of the sensor is fixedly connected with the supporting seat, and a limiting wheel is fixedly arranged on the guide rail.
Further, the sampling tube includes sampling tube body, direction lid, the direction lid with the top spiro union of sampling tube body, the fixed attach fitting that is equipped with in top of direction lid is used for connecting the lead screw of worm wheel lead screw lift.
Furthermore, the lead screw is provided with scale marks.
Furthermore, a pressure sensor is fixed on the outer wall of the bottom end of the outer guide cylinder.
The utility model has the advantages that: the device has simple structure, strong applicability and accurate sampling; a piston is utilized to create a vacuum condition in the sampling tube, so that the sample is integrally pulled up to a certain height, the interference of water to a sediment sample in the pulling up process is avoided, and the structure of the sediment is ensured; the vacuum condition and the principle of increasing the friction force are adopted, so that the sediment sample cannot fall off in the process of lifting upwards after the sampling is finished; through the pressure sensor and the tension sensor, the bottom contact object is reacted to change, whether the connecting rope is in a tight state, whether the piston is tensioned and other key nodes, the sampling step is made to progress more clearly, and the accuracy is higher.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a partially enlarged view of a in fig. 1.
In the figure: the rope winding device comprises a rope winding device 1, a worm gear lead screw lifter 2, a handle 3, a hollow support rod 4, a conical cylinder 5, an outer guide cylinder 6, a piston 7, a sampling cylinder 8, a guide rail 9, a fixed pulley 10, a connecting rope 11, a guide cover 12, a connecting joint 13, a supporting seat 14, a winding shaft 15, a motor 16, a tension sensor 17, a connecting plate 19, a scale mark 20, a lead screw 21, a pressure sensor 22, a limiting wheel 23 and a sampling cylinder body 24.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-2, the columnar sampler for sediments at the bottom of a lake comprises a rope winding device 1, a worm screw elevator 2, a handle 3, a hollow support rod 4, a conical cylinder 5, an outer guide cylinder 6, a piston 7 and a sampling cylinder 8 with a closed top end, wherein the conical cylinder 5 is fixedly arranged at the bottom end of the hollow support rod 4, the outer guide cylinder 6 is fixedly arranged at the bottom end of the conical cylinder 5, a pressure sensor 22 is fixedly arranged on the outer wall of the bottom end of the outer guide cylinder 6, the sampling cylinder 8 is arranged inside the outer guide cylinder 6, the outer wall of the sampling cylinder 8 is tightly attached to the inner wall of the outer guide cylinder 6, the inner wall of the sampling cylinder 8 is a rough surface, so that friction is increased, the sample cannot slide down in the lifting process, the piston 7 is arranged inside the sampling cylinder 8 in a vertical sliding manner, a vacuum condition is created inside the sampling cylinder 8 by the piston 7, the sample is integrally lifted to a certain height, so that the sediment sample is separated from the sediment layer, avoid drawing the interference of in-process water to the deposit in the sampling tube 8, guarantee the structure of deposit, because the deposit sample has become solid-like, at the dual guarantee of vacuum condition and increase frictional force principle, after the sample, the in-process sample that upwards promotes can not drop, has saved the step of design valve, has avoided the valve to meet the water and has rusted and cause mechanical damage, electric wire to go into water and lead to the short circuit scheduling problem.
The outer wall of the top of the hollow supporting rod 4 is fixedly provided with a handle 3 which is convenient to hold by hand or fixed on a corresponding auxiliary support, a worm wheel screw rod lifter 2 for driving the sampling cylinder 8 to slide up and down along the inner wall of the outer guide cylinder 6 is fixed on the handle 3, the worm wheel screw rod lifter 2 can be driven manually or electrically, the hollow supporting rod 4 and the screw rod 21 can be spliced and connected in multiple sections, the screw rod 21 also adopts a hollow structure, selection is convenient to be carried out according to different sampling depths, before sampling, the bottom end position of the piston 7 and the bottom end of the outer guide cylinder 6 are in a straight line and are kept still, and the sampling cylinder 8 extends downwards to the inside of a sediment for sampling through the driving action of the worm wheel screw rod lifter 2; the bottom end of a screw rod 21 of the worm wheel screw rod lifter 2 sequentially penetrates through the hollow support rod 4 and the conical cylinder 5 to be fixedly connected with the sampling cylinder 8, the conical cylinder 5 is used for limiting the upward movement position of the sampling cylinder 8, a guide rail 9 is fixed on the handle 3, a rope winding device 1 is fixedly arranged on the guide rail 9, and a fixed pulley 10 is fixed at the top end of the screw rod 21 of the worm wheel screw rod lifter 2; after passing through the fixed pulley 10, the connecting rope 11 of the rope winding device 1 passes through the screw 21 of the worm gear screw lifter 2, extends to the inside of the sampling cylinder 8, and is fixedly connected with the piston 7, and the rope winding device 1 is used for lifting the piston 7.
The sampling tube 8 comprises a sampling tube body 24 and a guide cover 12, the guide cover 12 is in threaded connection with the top end of the sampling tube body 24, the guide cover 12 is used for facilitating replacement of the sampling tube body 24, the sampling tube 8 is coaxial with the outer guide tube 6 under the driving of the worm gear lead screw lifter 2, a connecting joint 13 used for connecting a lead screw 21 of the worm gear lead screw lifter 2 is fixedly arranged at the top end of the guide cover 12, the connecting joint 13 can be a rotary joint, and the sampling tube 8 does not rotate along with the lead screw 21 in the rotating process of the lead screw 21.
The rope winding device 1 comprises a supporting seat 14, a winding shaft 15, a motor 16 and a tension sensor 17, the supporting seat 14 is arranged on a guide rail 9 in a sliding mode, the winding shaft 15 is connected onto the supporting seat 14 in a rotating mode, one end of the winding shaft 15 is fixedly connected with an output shaft of the motor 16, the motor 16 is fixedly connected with the supporting seat 14, a connecting rope 11 is wound on the winding shaft 15, one end of the tension sensor 17 is fixedly connected with the guide rail 9 through a connecting plate 19, the other end of the tension sensor 17 is fixedly connected with the supporting seat 14, a limiting wheel 23 is fixedly arranged on the guide rail 9, the limiting wheel 23 is used for limiting horizontal sliding of the supporting seat 14, when the rope winding device is in actual use, a display instrument is arranged on a handle 3 in a matched mode and used for displaying numerical values detected by the tension sensor 17 and the pressure sensor 22; after the outer guide cylinder 6 is inserted into the sediment to a certain depth, the piston 7 is lifted upwards, a sample in the sampling cylinder 8 is lifted to a certain height and fixed in the sampling cylinder 8, whether the piston 7 touches the guide cover 12 or not is judged according to the numerical value of the tension sensor 17 when the piston 7 is lifted, and when the piston 7 touches the guide cover 12, the piston 7 is stopped to be lifted; the pressure sensor 22 is used for reflecting the transformation of the contact object at the bottom end, and the tension sensor 17 is used for judging whether the connecting rope 11 is in a tight state, whether the piston 7 is tensioned and other key nodes, so that the sampling step is more clear in progression and higher in accuracy.
The lead screw 21 is provided with scale marks 20, the scale marks 20 are used for conveniently judging the depth of the sampling tube 8 inserted into the sediment, a strip groove can be formed in the outer wall of the lead screw 21, and the scale marks 20 are arranged in the strip groove.
The specific operation process of the embodiment is as follows:
1. the hollow support rod 4, the screw rod 21 and the like with proper lengths are selected according to the depth of the sediments in the water and are sequentially assembled;
2. the connecting rope 11 is loosened from a reel 15 of the rope winding device 1, so that the piston 7 moves downwards until the bottom end of the piston 7 and the bottom end of the outer guide cylinder 6 are arranged on the same horizontal line, and the connecting rope 11 is locked through the rope winding device 1, so that the connecting rope 11 is prevented from loosening in the sampling process;
3. the device is vertically and gradually placed downwards into water, the readings of the pressure sensor 22 are observed, when the outer guide cylinder 6 does not contact the surface of the sediment, the readings show a slow increasing trend along with the increase of the water depth, and when the readings suddenly change, the pressure sensor 22 is proved to be in contact with the sediment and reach the surface of the sediment;
4. placing the device on an auxiliary support on site to keep the instrument stable;
5. the worm gear screw rod lifter 2 is started, the sampling cylinder 8 is driven to move downwards through the screw rod 21, the scale marks 20 on the screw rod 21 are observed, the sampling cylinder 8 is finally inserted into the sediment to a certain sampling depth, the worm gear screw rod lifter 2 is closed, and the top end of the sampling cylinder 8 and the top end of the piston 7 are kept at a certain distance, so that the later-stage piston 7 can conveniently suck the sediment;
6. the motor 16 of the rope winding device 1 is started again to lift the connecting rope 11 upwards, when the indication of the tension sensor 17 changes suddenly, the piston 7 is proved to be tightly attached to the guide cover 12, the piston 7 is lifted in place, namely, the sediment in the sampling cylinder 8 is sucked and lifted, the sediment is fixed in the sampling cylinder 8 under the action of water pressure, air pressure and friction force, and the connecting rope 11 is locked through the motor 16;
7. and pulling the device out of the water body, and finishing sampling.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The columnar sampler for the sediment at the bottom of the lake is characterized by comprising a rope winding device, a worm gear lead screw lifter, a handle, a hollow support rod, a conical cylinder, an outer guide cylinder, a piston and a sampling cylinder with a closed top end, wherein the conical cylinder is fixedly arranged at the bottom end of the hollow support rod, the outer guide cylinder is fixedly arranged at the bottom end of the conical cylinder, the sampling cylinder is arranged in the outer guide cylinder, the outer wall of the sampling cylinder is tightly attached to the inner wall of the outer guide cylinder, the inner wall of the sampling cylinder is a rough surface, and the piston is arranged in the sampling cylinder in a vertically sliding manner;
the handle is fixedly arranged on the outer wall of the top of the hollow supporting rod, the worm gear lead screw lifter for driving the sampling cylinder to slide up and down along the inner wall of the outer guide cylinder is fixed on the handle, the bottom end of a lead screw of the worm gear lead screw lifter sequentially penetrates through the hollow supporting rod, the conical cylinder and the sampling cylinder to be fixedly connected, a guide rail is fixed on the handle, a rope coiling device is fixedly arranged on the guide rail, and a fixed pulley is fixed at the top end of a lead screw of the worm gear lead screw lifter; and a connecting rope of the rope winding device passes through the fixed pulley, penetrates through a screw rod of the worm gear screw rod lifter, extends to the inside of the sampling cylinder, and is fixedly connected with the piston.
2. The columnar sampler for lake bottom sediment as claimed in claim 1, wherein the rope winding device comprises a support base, a reel, a motor and a tension sensor, the support base is slidably disposed on the guide rail, the reel is rotatably connected to the support base, one end of the reel is fixedly connected to an output shaft of the motor, the motor is fixedly connected to the support base, the connection rope is wound on the reel, one end of the tension sensor is fixedly connected to the guide rail through a connection plate, the other end of the sensor is fixedly connected to the support base, and a limit wheel is fixedly disposed on the guide rail.
3. A columnar sampler for lake bottom sediment according to claim 1 or 2, wherein the sampling tube comprises a sampling tube body and a guide cover, the guide cover is in threaded connection with the top end of the sampling tube body, and the top end of the guide cover is fixedly provided with a connecting joint for connecting a screw rod of the worm gear screw rod lifter.
4. A columnar sampler for lake bottom sediment according to claim 1, wherein the screw rod is provided with scale marks.
5. A columnar sampler for lake bottom sediment according to claim 1, wherein a pressure sensor is fixed on the outer wall of the bottom end of the outer guide cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120613562.9U CN214793897U (en) | 2021-03-25 | 2021-03-25 | Columnar sampler for lake bottom sediment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120613562.9U CN214793897U (en) | 2021-03-25 | 2021-03-25 | Columnar sampler for lake bottom sediment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214793897U true CN214793897U (en) | 2021-11-19 |
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ID=78667194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120613562.9U Active CN214793897U (en) | 2021-03-25 | 2021-03-25 | Columnar sampler for lake bottom sediment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214793897U (en) |
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2021
- 2021-03-25 CN CN202120613562.9U patent/CN214793897U/en active Active
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