CN115824720A - Underground water sample collecting device and method for engineering geological exploration - Google Patents
Underground water sample collecting device and method for engineering geological exploration Download PDFInfo
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- CN115824720A CN115824720A CN202310127877.6A CN202310127877A CN115824720A CN 115824720 A CN115824720 A CN 115824720A CN 202310127877 A CN202310127877 A CN 202310127877A CN 115824720 A CN115824720 A CN 115824720A
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- Y02A90/30—Assessment of water resources
Abstract
The invention relates to the technical field of underground water sampling, in particular to an underground water sample collecting device and method for engineering geological exploration.
Description
Technical Field
The invention relates to the technical field of underground water sampling, in particular to an underground water sample collecting device and method for engineering geological exploration.
Background
Taking underground water sample for testing and evaluatingThe corrosivity of valuable water to a concrete structure is important content of engineering geological exploration, and test items comprise pH value and Mg 2+ 、Cl - 、SO 4 2- 、HCO 3 - Aggressive CO 2 、NH 4 + 、OH - Etc., the test method is mainly a titration method.
One of the current methods for sampling underground water samples is to fix a mineral water bottle at the end of a bamboo pole (or branch) and extend it into a drilled hole, and after the hole is filled with mineral water, the mineral water bottle is put out and sent to a laboratory for testing. The drawbacks of this approach are mainly represented by: (1) The collected underground water sample contains a large amount of soil particles (cohesive soil, silt, sandy soil), grease, organic matters and the like, the purity is low, and the testing precision of each ion and molecule is seriously influenced; (2) The operation is inconvenient, and even a water sample is difficult to take when the underground water level is deep, and the specific depth of the taken water sample cannot be measured. The corrosivity of underground water on a survey site to a concrete structure is evaluated according to a water quality test result, and the accuracy is greatly reduced due to the defects, and even misjudgment can be caused.
For overcoming the not enough of above-mentioned method, the mode of taking water after present beginning to stretch into the drill hole through the drinking-water pipe, it sets up the filter screen in the water intaking department of drinking-water pipe, be used for filtering material such as silt, but because the inner wall soil in drill hole is comparatively loose, the inner wall soil that the inner wall soil of drill hole sinks easily to result in by the sound that brings when the drinking-water pipe is visited down and the near pressure differential that produces of the mouth that draws water when drawing water, the back is sunk to the inner wall soil in drill hole, the filter screen that sets up can be stopped up very easily, if increase the dynamics of drawing water, still can take silt out, cause the problem that is difficult to the water intaking.
Therefore, the underground water sample collecting device for engineering geological exploration is provided aiming at the problems.
Disclosure of Invention
The invention aims to provide an underground water sample collecting device for engineering geological exploration, which solves the problems that the soil on the inner wall of a drilling hole provided in the background art is loose, the soil on the inner wall of the drilling hole is easy to collapse due to dynamic and static conditions caused by downward exploration of a water pumping pipe and pressure difference generated near a water pumping port during water pumping, a set filter screen is easy to block after the soil on the inner wall of the drilling hole is collapsed, and silt is still pumped out if the water pumping strength is increased, so that water is difficult to take.
In order to achieve the purpose, the invention provides the following technical scheme: an underground water sample collecting device for engineering geological exploration comprises a drill rod and a drill bit at the bottom end of the drill rod, wherein an opening is formed in the drill rod, an opening cover is rotatably connected to the opening through a hinge, the opening cover can rotate inwards or outwards by taking the top end as an axis, the opening cover can be embedded into the inner side of the drill rod when rotating inwards, a cavity can be formed between the opening cover and underground soil when rotating outwards, and a second telescopic filter screen is fixedly arranged between the outer side of the opening cover and the opening;
an outer rod capable of moving up and down is rotatably arranged on the inner side of the drill rod, an inner rod is connected to the inner side of the outer rod in a sliding mode, a first filter screen is arranged on the outer rod, a plurality of water inlets are formed in the inner rod, the projection angles of the water inlets at the bottom ends are different, the position of the first filter screen corresponds to that of the opening, and the water inlets can be overlapped with the corresponding first filter screens through rotation;
the top end of the inner rod is communicated with a water taking pipe.
When the underground water sampling device is used, the drill rod is inserted into the ground, and the insertion depth is deeper than an underground waterline, so that relatively pure underground water can be taken out during sampling, the interference of silt on an underground water sample is reduced to the greatest extent, and a water intake is not easy to block;
during sampling, the outer rod can slowly move up and down on the inner side of the drill rod, wherein a large part of the opening cover can be embedded into the inner side of the drill rod, the drill rod can be conveniently downward explored in the geology, the first rotary disc is rotated after the required depth is reached, the drill rod is driven to rotate by the first rotary disc, the outer rod is kept in a static state when the drill rod rotates, the outer rod can be fixed through an external tool, the drill rod and the outer rod generate relative motion, the outer rod can move downward under the action of threads, the opening cover can be driven to move outward through the connecting rod along with the downward movement of the outer rod, the soil at the opening cover can be continuously extruded and tamped along with the continuous outward movement of the opening cover, and a cavity with a narrow upper part and a wide lower part is formed between the opening cover and the soil under the rotating action of the drill rod; the water is taken from the cavity, so that substances such as silt and the like can be greatly prevented from falling to the water taking position of the outer rod, the effect of enhancing water quality is achieved, the phenomenon that the filter screen at the water taking position is blocked by the substances such as silt and the like is avoided, the arranged second filter screen plays a role in primary filtering, and the arranged first filter screen plays a role in secondary filtering;
the water intake is arranged at one side of the opening of the drill rod, and the arrangement can ensure that the opening cover has the functions of surrounding and shielding the water intake, further prevents substances such as silt and the like from falling to the water intake part of the outer rod, plays a role in enhancing water quality, and prevents the substances such as silt and the like from blocking the filter screen at the water intake part;
when water is taken, the underground water sampling device can realize sampling of underground water at different depths, a plurality of corresponding openings and first filter screens are respectively arranged on the drill rod and the outer rod, when the underground water sampling device is used, the inner rod is rotated, a water inlet on the inner rod is aligned with the first filter screen at the height required for taking water, negative pressure is applied to the water taking pipe, the underground water can emerge through the second filter screen at the opening cover, the openings of the drill rod, the first filter screen, the water inlet, the inner rod and the water taking pipe to realize sampling, in order to prevent the sample from remaining in the pipeline during sampling, when water is pumped, part of the water at the front section can be emptied, and the water at the rear section can be detected;
a plurality of the water inlet is different at the projection angle of bottom, and when this kind of setting can make one of them water inlet and first filter screen coincide, all the other water inlets can stagger with first filter screen, and when the water intaking promptly, only one water inlet intake.
As an alternative of the underground water sample sampling device for engineering geological exploration, the invention provides the following technical scheme: the inner side of the drill rod is fixedly connected with a connecting disc, the inner side of the connecting disc is connected with the outer side of the outer rod in a sliding mode, a connecting rod is arranged between the outer rod and the opening cover, and the two ends of the connecting rod are respectively connected with the outer rod and the opening cover in a rotating mode through hinges.
Under the arrangement, on one hand, the inner side of the drill rod can be sealed through the connecting disc, on the other hand, the outer rod can be limited through the connecting disc, and the stability of the outer rod in the up-and-down movement process is improved;
as an alternative of the underground water sampling device for engineering geological exploration, the invention is characterized in that: the outer drill rod is characterized in that threads are fixedly arranged on the outer side of the upper end of the outer rod, a first rotary table is fixedly connected to the top end of the drill rod, the inner side of the first rotary table is in threaded connection with the outer side of the threads in a threaded mode, a second rotary table is fixedly connected to the top end of the outer rod, and the inner side of the second rotary table is in sliding connection with the inner rod.
Under the arrangement, the arrangement of the threads enables the first rotary disc and the outer rod to generate relative up-and-down movement, and the second rotary disc is used for operating the outer rod to keep still;
as an alternative of the underground water sampling device for engineering geological exploration, the invention is characterized in that: the inner side of the bottom end of the drill rod is fixedly provided with a limiting column, and the inner side of the limiting column is connected with the outer side of the outer rod in a sliding mode.
Under the arrangement, the limiting column is provided with the outer rod for limiting, so that the outer rod can stably move on the inner side of the drill rod;
as an alternative of the underground water sampling device for engineering geological exploration, the invention is characterized in that: the length of the opening cover is slightly higher than that of the opening, and when the drill rod rotates, a groove is formed at the bottom end of the cavity.
Under the arrangement, the length of the opening cover is slightly higher than that of the opening, and in the process of forming the cavity, a groove is formed at the bottom end of the cavity and can provide a storage space for some scattered silt, so that the silt is further prevented from approaching the opening on the drill rod;
as an alternative of the underground water sampling device for engineering geological exploration, the invention is characterized in that: the top outside fixedly connected with backup pad of drilling rod, fixedly connected with support column in the backup pad, fixedly connected with motor on the support column, the output fixedly connected with gear of motor, the fixed ring gear that is provided with of upside of first carousel, the ring gear meshes with the gear mutually.
As an alternative of the underground water sampling device for engineering geological exploration, the invention is characterized in that: the second turntable is provided with a limiting groove, the motor is fixedly provided with a limiting rod, and one end of the limiting rod is arranged on the inner side of the limiting groove in a sliding connection mode.
Under the arrangement, the arranged supporting plate plays a role in supporting and connecting, when the device works, the motor in the device is started, the motor is started to drive the gear to rotate, the gear rotates to drive the toothed ring to rotate, the first rotary disc rotates along with the toothed ring, the drill rod rotates due to the rotation of the first rotary disc, meanwhile, the outer rod can move upwards or downwards along with the rotation of the drill rod, one end of the limiting rod is arranged on the inner side of the limiting groove in a sliding connection mode, the limiting rod plays a role in limiting the second rotary disc, the second rotary disc is prevented from rotating along with the rotation of the first rotary disc, the outer rod moves downwards, and the opening cover at the opening is opened;
as an alternative of the underground water sampling device for engineering geological exploration, the invention is characterized in that: the drilling rod symmetry is provided with the spout, the inside sliding connection of spout has the slide bar, the export has been seted up to the outside one end of slide bar towards the drilling rod, the outside one end of slide bar towards the drilling rod is provided with the pyramis.
As an alternative of the underground water sampling device for engineering geological exploration, the invention is characterized in that: and a tension spring is arranged on the sliding rod, and two ends of the tension spring are fixedly connected with the sliding chute and the sliding rod respectively.
Under the arrangement, silt can be accumulated on the inner side of the bottom end of the drill rod after a long time, and because underground water is possibly sampled for a plurality of times for a long time, the silt entering the inner side of the drill rod can be discharged, the inner side of the drill rod is kept clean, the silt is prevented from being accumulated on the inner side of the drill rod, and the water intake is influenced in the past for a long time; when discharging silt, make one of them water inlet and first filter screen intercommunication, pressurize the inboard of drilling rod through the intake pipe, along with the increase of the inboard pressure of drilling rod, slide bar in the spout can be gradually to the outside motion of drilling rod, after the spout is emitted in the export on the slide bar, the bottom of drilling rod is inboard, the inboard of slide bar and the bottom outside of drilling rod can feed through, under highly compressed effect, the inboard silt of drilling rod bottom can be discharged through slide bar and export, realizes the clearance.
A use method of an underground water sample collecting device for engineering geological exploration is characterized by comprising the following steps of;
a step a; the drill rod is inserted into the ground, the insertion depth is deeper than the underground waterline, the water intake is arranged at one side of the opening of the drill rod, and the arrangement can ensure that the opening cover can play a role in enclosing and shielding the water intake, further prevent substances such as silt and the like from falling to the water intake part of the outer rod, play a role in enhancing water quality and prevent substances such as silt and the like from blocking a filter screen at the water intake part;
b, performing a step; the first rotating disc is rotated to drive the drill rod to rotate, the drill rod keeps a static state of the outer rod when rotating, the drill rod and the outer rod generate relative motion, and soil at the opening cover can be continuously extruded and tamped, so that a cavity with a narrow top and a wide bottom is formed between the opening cover and the soil;
c, performing a step; rotating the inner rod to align the water inlet on the inner rod with the first filter screen at the required water taking height, applying negative pressure to the water taking pipe, and enabling underground water to flow out of the second filter screen at the opening cover, the opening of the drill rod, the first filter screen, the water inlet, the inner rod and the water taking pipe to realize sampling;
step d; the inner side of the drill rod is pressurized through the water taking pipe, and under the action of high pressure, silt on the inner side of the bottom end of the drill rod can be discharged through the sliding rod and the outlet, so that cleaning is realized.
Compared with the prior art, the invention has the beneficial effects that:
1. when the underground water sample collecting device for engineering geological exploration is used, the drill rod is inserted into the ground, and the insertion depth is deeper than an underground waterline, so that relatively pure underground water can be taken out during sampling, the interference of silt on the underground water sample is reduced to the greatest extent, and a water intake is not easy to block; during sampling, the outer rod can slowly move up and down on the inner side of the drill rod, wherein a large part of the opening cover can be embedded into the inner side of the drill rod, the drill rod can be conveniently downward explored in the geology, the first rotary disc is rotated after the required depth is reached, the drill rod is driven to rotate by the first rotary disc, the outer rod is kept in a static state when the drill rod rotates, the outer rod can be fixed through an external tool, the drill rod and the outer rod generate relative motion, the outer rod can move downward under the action of threads, the opening cover can be driven to move outward through the connecting rod along with the downward movement of the outer rod, the soil at the opening cover can be continuously extruded and tamped along with the continuous outward movement of the opening cover, and a cavity with a narrow upper part and a wide lower part is formed between the opening cover and the soil under the rotating action of the drill rod; the water is taken from the cavity, so that substances such as silt and the like can be greatly prevented from falling to the water taking position of the outer rod, the effect of enhancing water quality is achieved, the phenomenon that the filter screen at the water taking position is blocked by the substances such as silt and the like is avoided, the arranged second filter screen plays a role in primary filtering, and the arranged first filter screen plays a role in secondary filtering;
2. according to the underground water sample collecting device for engineering geological exploration, the water intake is arranged on one side of the opening of the drill rod, and the opening cover can be used for blocking and shielding the water intake, so that sediment and other substances are further prevented from falling to the water intake part of the outer rod, the effect of enhancing water quality is achieved, and the effect that the sediment and other substances block the filter screen at the water intake part is avoided;
3. when the underground water sample sampling device for engineering geological exploration is used for taking water, the underground water sampling device can realize sampling of underground water at different depths, a plurality of corresponding openings and first filter screens are respectively arranged on a drill rod and an outer rod, when the underground water sampling device is used, an inner rod is rotated, a water inlet in the inner rod is aligned with the first filter screen at the required water taking height, negative pressure is applied to a water taking pipe, the underground water can emerge through a second filter screen at an opening cover, the openings of the drill rod, the first filter screen, the water inlet, the inner rod and the water taking pipe to realize sampling, in order to prevent the samples from remaining among the pipelines in the prior sampling, when water is pumped, part of the extracted water at the front section can be emptied, and the water at the rear section is detected;
4. this a groundwater sample collection system for engineering geological survey, a plurality of the water inlet is different at the projection angle of bottom, and when this kind of setting can make one of them water inlet and first filter screen coincide, all the other water inlets can stagger with first filter screen, and during the water intaking promptly, only one water inlet intake.
5. According to the underground water sample collecting device for engineering geological exploration, the length of the opening cover can be slightly higher than that of the opening, and under the arrangement, in the process of forming the cavity, the bottom end of the cavity forms a groove which can provide a storage space for scattered silt, so that the silt is further prevented from being close to the opening on the drill rod;
6. according to the underground water sample collecting device for engineering geological exploration, the supporting plate plays a supporting and connecting role, when the underground water sample collecting device works, the motor in the underground water sample collecting device is started, the motor is started to drive the gear to rotate, the gear rotates to drive the toothed ring to rotate, the first rotary disc rotates along with the toothed ring, the drill rod rotates due to the rotation of the first rotary disc, meanwhile, the outer rod can move upwards or downwards along with the rotation of the drill rod, one end of the limiting rod is arranged on the inner side of the limiting groove in a sliding connection mode, the limiting rod plays a limiting role in limiting the second rotary disc, the second rotary disc is prevented from rotating along with the rotation of the first rotary disc, the outer rod moves downwards, and the opening cover at the opening is opened;
7. according to the underground water sample collecting device for engineering geological exploration, silt can be accumulated on the inner side of the bottom end of the drill rod after a long time, and because underground water can be sampled for a plurality of times for a long time, the silt entering the inner side of the drill rod can be discharged, the inner side of the drill rod is kept clean, the silt is prevented from being accumulated on the inner side of the drill rod, and the influence on a water intake is generated in the past for a long time; when discharging silt, make one of them water inlet and first filter screen intercommunication, pressurize the inboard of drilling rod through the intake pipe, along with the increase of the inboard pressure of drilling rod, slide bar in the spout can be gradually to the outside motion of drilling rod, after the spout is emitted in the export on the slide bar, the bottom of drilling rod is inboard, the inboard of slide bar and the bottom outside of drilling rod can feed through, under highly compressed effect, the inboard silt of drilling rod bottom can be discharged through slide bar and export, realizes the clearance.
Drawings
FIG. 1 is a schematic view of an external integral installation structure of the present invention;
FIG. 2 is a schematic view showing an overall structure of an outer appearance of the opening cover according to the present invention when the opening cover is opened
FIG. 3 is a front sectional view of the overall structure of the present invention;
FIG. 4 is a front sectional view schematically showing the entire structure of the opening cover of the present invention when it is opened;
FIG. 5 is a schematic view of the construction of the present invention when the opening cover is opened in the ground;
FIG. 6 is a schematic view showing a further installation structure of the opening cover of the present invention;
FIG. 7 is a schematic view of the structure of FIG. 4 at A in accordance with the present invention;
FIG. 8 is a further schematic illustration of the mounting arrangement of FIG. 1 in accordance with the present invention;
FIG. 9 is a schematic view of the installation structure of the joint of the inner rod and the outer rod in the present invention;
FIG. 10 is a schematic view of the structure of FIG. 8 at B in accordance with the present invention;
FIG. 11 is a schematic view of a further mounting arrangement of FIG. 3 in accordance with the present invention;
FIG. 12 is a schematic view of the structure of FIG. 11 at point C;
FIG. 13 is a schematic view of the mounting structure at the slide bar in the present invention.
In the figure: 1. a drill stem; 2. a drill bit; 3. a connecting disc; 4. an outer rod; 5. a first filter screen; 6. a connecting rod; 7. an opening cover; 8. a second filter screen; 9. a first turntable; 10. a second turntable; 11. a thread; 12. an inner rod; 13. a water intake pipe; 14. a cavity; 15. a groove; 16. a support plate; 17. a chute; 18. a motor; 19. a support pillar; 20. a water inlet; 21. a gear; 22. a toothed ring; 23. a limiting rod; 24. a limiting groove; 25. a limiting post; 26. a slide bar; 27. a tension spring; 28. an outlet; 29. a taper portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-5, the present invention provides a technical solution: an underground water sample sampling device for engineering geological exploration comprises a drill rod 1 and a drill bit 2 at the bottom end of the drill rod 1, wherein an opening is formed in the drill rod 1, an opening cover 7 is rotatably connected to the opening through a hinge, the opening cover 7 can rotate inwards or outwards by taking the top end as an axis, the opening cover 7 can be embedded into the inner side of the drill rod 1 when rotating inwards, a cavity 14 can be formed between the opening cover 7 and underground soil when rotating outwards, and a telescopic second filter screen 8 is fixedly arranged between the outer side of the opening cover 7 and the opening;
the top end of the inner rod 12 is communicated with a water intake pipe 13.
When the underground water sampling device is used, the drill rod 1 is inserted into the ground, and the insertion depth is deeper than an underground waterline, so that relatively pure underground water can be taken out during sampling, the interference of silt on an underground water sample is reduced to the greatest extent, and a water intake is not easy to block;
during sampling, the outer rod 4 can slowly move up and down on the inner side of the drill rod 1, wherein a large part of the opening cover 7 can be embedded into the inner side of the drill rod 1, the drill rod 1 can be conveniently downward explored in geology, after the required depth is reached, the first rotary disc 9 is rotated, the first rotary disc 9 drives the drill rod 1 to rotate, the drill rod 1 keeps the outer rod 4 in a static state when rotating, the outer rod 4 can be fixed through an external tool, the drill rod 1 and the outer rod 4 generate relative motion, the outer rod 4 can move downward under the action of the thread 11, the outer rod 4 can move downward along with the downward movement of the outer rod 4, the opening cover 7 is driven by the connecting rod 6 to move outward, the opening cover 7 continuously moves outward, and under the rotating action of the drill rod 1, soil at the opening cover 7 can be continuously extruded and tamped, so that a cavity 14 with a narrow upper part and a wide lower part is formed between the opening cover 7 and the soil; the water is taken from the cavity 14, so that the substances such as silt and the like can be greatly prevented from falling to the water taking position of the outer rod 4, the effect of enhancing the water quality is achieved, the filter screen at the water taking position is prevented from being blocked by the substances such as silt and the like, the second filter screen 8 is arranged to achieve the effect of primary filtering, and the first filter screen 5 is arranged to achieve the effect of secondary filtering;
the water intake is arranged at one side of the opening of the drill rod 1, and the arrangement can ensure that the opening cover 7 plays a role in surrounding and shielding the water intake, further prevents substances such as silt and the like from falling to the water intake part of the outer rod 4, plays a role in enhancing water quality, and prevents substances such as silt and the like from blocking a filter screen at the water intake part;
specifically, a connecting disc 3 is fixedly connected to the inner side of the drill rod 1, the inner side of the connecting disc 3 is slidably connected to the outer side of an outer rod 4, a connecting rod 6 is arranged between the outer rod 4 and an opening cover 7, and two ends of the connecting rod 6 are rotatably connected with the outer rod 4 and the opening cover 7 through hinges respectively.
Under the arrangement, on one hand, the inner side of the drill rod 1 can be sealed through the connecting disc 3, on the other hand, the outer rod 4 can be limited through the connecting disc 3, and the stability of the outer rod 4 in up-and-down movement is improved;
specifically, a thread 11 is fixedly provided on the outer side of the upper end of the outer rod 4, a first rotary table 9 is fixedly connected to the top end of the drill rod 1, the inner side of the first rotary table 9 is spirally connected to the outer side of the thread 11, a second rotary table 10 is fixedly connected to the top end of the outer rod 4, and the inner side of the second rotary table 10 is slidably connected to the inner rod 12.
Under the above arrangement, the arrangement of the thread 11 enables the relative up-and-down movement of the first rotary disc 9 and the outer rod 4, and the second rotary disc 10 is used for operating the outer rod 4 to keep still;
specifically, a limiting column 25 is fixedly arranged on the inner side of the bottom end of the drill rod 1, and the inner side of the limiting column 25 is slidably connected with the outer side of the outer rod 4.
With the above arrangement, the outer rod 4 is provided in the stopper post 25 of the present invention to perform a stopper operation, so that the outer rod 4 can stably move inside the drill rod 1.
Example 2
In this embodiment, as a further improvement of embodiment 1, please refer to fig. 1 to 10, an outer rod 4 capable of moving up and down is rotatably disposed inside the drill rod 1, an inner rod 12 is slidably connected inside the outer rod 4, a first filter screen 5 is disposed on the outer rod 4, a plurality of water inlets 20 are disposed on the inner rod 12, projection angles of the plurality of water inlets 20 at bottom ends are different, the first filter screen 5 corresponds to an opening, and the water inlets 20 can coincide with the corresponding first filter screen 5 by rotating;
when water is taken, the underground water sampling device can realize sampling of underground water at different depths, a plurality of corresponding openings and first filter screens 5 are respectively arranged on a drill rod 1 and an outer rod 4, when the underground water sampling device is used, an inner rod 12 is rotated, a water inlet 20 on the inner rod 12 is aligned with the first filter screen 5 at the required water taking height, negative pressure is applied to a water taking pipe 13, the underground water can emerge through a second filter screen 8 at an opening cover 7, the opening of the drill rod 1, the first filter screen 5, the water inlet 20, the inner rod and the water taking pipe 13 to realize sampling, in order to prevent the sample from remaining among pipelines, when the sample is taken in the past, part of the water at the front section can be emptied when water is taken, and the part of the water at the rear section is detected;
the projection angles of the water inlets 20 at the bottom ends are different, and when one of the water inlets 20 is overlapped with the first filter screen 5, the rest of the water inlets 20 can be staggered with the first filter screen 5, namely, only one water inlet is used for water intake when water is taken.
Example 3
In this embodiment, referring to fig. 1-10, the length of the opening cover 7 is slightly greater than the length of the opening, and when the drill rod 1 rotates, the bottom end of the cavity 14 forms a groove 15.
Under the arrangement, the length of the opening cover 7 is slightly larger than that of the opening, and in the arrangement, a groove 15 is formed at the bottom end of the cavity 14 in the forming process of the cavity 14, and the groove 15 can provide a storage space for scattered silt, so that the silt is further prevented from approaching the opening in the drill rod 1.
Example 4
In this embodiment, referring to fig. 1 to 10, a supporting plate 16 is fixedly connected to an outer side of a top end of the drill rod 1, a supporting column 19 is fixedly connected to the supporting plate 16, a motor 18 is fixedly connected to the supporting column 19, a gear 21 is fixedly connected to an output end of the motor 18, a toothed ring 22 is fixedly disposed on an upper side of the first rotating disk 9, and the toothed ring 22 is engaged with the gear 21.
Specifically, a limit groove 24 is formed in the second turntable 10, a limit rod 23 is fixedly disposed on the motor 18, and one end of the limit rod 23 is slidably connected to the inner side of the limit groove 24.
Under the arrangement, the arranged support plate 16 plays a role in supporting and connecting, when the device works, the motor 18 in the device is started, the motor 18 is started to drive the gear 21 to rotate, the gear 21 rotates to drive the toothed ring 22 to rotate, the toothed ring 22 rotates to drive the first rotary disc 9 to rotate along with the gear, the drill rod 1 is driven to rotate by the first rotary disc 9 to rotate, meanwhile, the outer rod 14 can move upwards or downwards along with the rotation of the drill rod 1, one end of the limiting rod 23 is arranged on the inner side of the limiting groove 24 in a sliding connection mode, the limiting rod 23 plays a role in limiting the second rotary disc 10, the second rotary disc 10 is prevented from rotating along with the rotation of the first rotary disc 9, the outer rod 4 moves downwards, and the opening cover 7 at the opening is opened.
Example 5
In this embodiment, referring to fig. 1 to 13, slide grooves 17 are symmetrically disposed on the drill rod 1, a slide rod 26 is slidably connected inside the slide groove 17, an outlet 28 is opened at an end of the slide rod 26 facing an outer side of the drill rod 1, and a tapered portion 29 is disposed at an end of the slide rod 26 facing the outer side of the drill rod 1.
Specifically, a tension spring 27 is disposed on the sliding rod 26, and two ends of the tension spring 27 are respectively fixedly connected to the sliding slot 17 and the sliding rod 26.
Under the arrangement, silt can be accumulated on the inner side of the bottom end of the drill rod 1 after a long time, and because underground water is possibly required to be sampled for a long time for many times, the silt entering the inner side of the drill rod 1 can be discharged, the inner side of the drill rod 1 is kept clean, the silt is prevented from being accumulated on the inner side of the drill rod 1, and the influence on a water intake is generated in the past for a long time; when discharging silt, make one of them water inlet 20 and first filter screen 5 intercommunication, pressurize the inboard of drilling rod 1 through intake pipe 13, along with the increase of the inboard pressure of drilling rod 1, slide bar 26 in the spout 17 can be gradually to the outside motion of drilling rod 1, export 28 on slide bar 26 emits behind spout 17, the bottom of drilling rod 1 is inboard, the inboard of slide bar 26 and the bottom outside of drilling rod 1 can communicate, under highly compressed effect, the inboard silt of drilling rod 1 bottom can be discharged through slide bar 26 and export 28, realize the clearance.
The invention also discloses a using method of the underground water sample collecting device for engineering geological exploration, which comprises the following steps of;
a step a; the drill rod 1 is inserted into the ground, the insertion depth is deeper than the underground waterline, the water intake in the invention is arranged at one side of the opening of the drill rod 1, and the arrangement can ensure that the opening cover 7 can play a role in surrounding and shielding the water intake, further prevent sediment and other substances from falling to the water intake part of the outer rod 4, play a role in enhancing water quality and prevent sediment and other substances from blocking a filter screen at the water intake part;
b, performing a step; the first rotating disc 9 is rotated, the first rotating disc 9 drives the drill rod 1 to rotate, the drill rod 1 keeps a static state of the outer rod 4 when rotating, the drill rod 1 and the outer rod 4 generate relative motion, soil at the opening cover 7 can be continuously extruded and tamped, and a cavity 14 with a narrow top and a wide bottom is formed between the opening cover 7 and the soil;
c, performing a step; the inner rod 12 is rotated to enable the water inlet 20 on the inner rod 12 to be aligned with the first filter screen 5 at the required water taking height, negative pressure is applied to the water taking pipe 13, and underground water can flow out through the second filter screen 8 at the opening cover 7, the opening of the drill rod 1, the first filter screen 5, the water inlet 20, the inner rod and the water taking pipe 13 to realize sampling;
d, performing a step; the inner side of the drill rod 1 is pressurized through the water taking pipe 13, and under the action of high pressure, silt on the inner side of the bottom end of the drill rod 1 can be discharged through the sliding rod 26 and the outlet 28, so that cleaning is realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an underground water sample sampling device for engineering geology reconnaissance, includes drill bit (2) of drilling rod (1) and drilling rod (1) bottom, its characterized in that: an opening is formed in the drill rod (1), the opening is rotatably connected with an opening cover (7) through a hinge, the opening cover (7) can rotate inwards or outwards by taking the top end as an axis, the opening cover (7) can be embedded into the inner side of the drill rod (1) when rotating inwards, a cavity (14) can be formed between the opening cover (7) and underground soil when rotating outwards, and a second telescopic filter screen (8) is fixedly arranged between the outer side of the opening cover (7) and the opening;
the inner side of the drill rod (1) is rotatably provided with an outer rod (4) capable of moving up and down, the inner side of the outer rod (4) is connected with an inner rod (12) in a sliding mode, a first filter screen (5) is arranged on the outer rod (4), the inner rod (12) is provided with a plurality of water inlets (20), the projection angles of the water inlets (20) at the bottom ends are different, the position of the first filter screen (5) corresponds to the opening, and the water inlets (20) can be overlapped with the corresponding first filter screen (5) through rotation;
the top end of the inner rod (12) is communicated with a water intake pipe (13).
2. An apparatus for sampling a groundwater sample for engineering geological exploration according to claim 1, wherein: the drilling rod is characterized in that a connecting disc (3) is fixedly connected to the inner side of the drilling rod (1), the inner side of the connecting disc (3) is connected with the outer side of an outer rod (4) in a sliding mode, a connecting rod (6) is arranged between the outer rod (4) and an opening cover (7), and the two ends of the connecting rod (6) are rotatably connected with the outer rod (4) and the opening cover (7) through hinges respectively.
3. An apparatus for sampling a groundwater sample for engineering geological exploration according to claim 2, wherein: the drill rod is characterized in that threads (11) are fixedly arranged on the outer side of the upper end of the outer rod (4), a first rotary disc (9) is fixedly connected to the top end of the drill rod (1), the inner side of the first rotary disc (9) is in threaded connection with the threads (11), a second rotary disc (10) is fixedly connected to the top end of the outer rod (4), and the inner side of the second rotary disc (10) is in sliding connection with the inner rod (12).
4. A ground water sampling apparatus for engineering geological exploration, according to claim 3, characterized in that: the inner side of the bottom end of the drill rod (1) is fixedly provided with a limiting column (25), and the inner side of the limiting column (25) is connected with the outer side of the outer rod (4) in a sliding mode.
5. A groundwater sampling apparatus for engineering geological exploration according to claim 4, wherein: the length of the opening cover (7) is slightly larger than that of the opening, and when the drill rod (1) rotates, a groove (15) is formed at the bottom end of the cavity (14).
6. A ground water sampling apparatus for engineering geological exploration, according to claim 5, characterized in that: the drill rod drilling machine is characterized in that a supporting plate (16) is fixedly connected to the outer side of the top end of the drill rod (1), a supporting column (19) is fixedly connected to the supporting plate (16), a motor (18) is fixedly connected to the supporting column (19), a gear (21) is fixedly connected to the output end of the motor (18), a toothed ring (22) is fixedly arranged on the upper side of the first rotating disc (9), and the toothed ring (22) is meshed with the gear (21).
7. An apparatus for sampling a groundwater sample for engineering geological exploration according to claim 6, wherein: the limiting groove (24) is formed in the second rotary table (10), the limiting rod (23) is fixedly arranged on the motor (18), and one end of the limiting rod (23) is arranged on the inner side of the limiting groove (24) in a sliding connection mode.
8. An apparatus for sampling a groundwater sample for engineering geological exploration according to claim 7, wherein: the drilling rod (1) is symmetrically provided with sliding grooves (17), a sliding rod (26) is connected to the inside of each sliding groove (17) in a sliding mode, an outlet (28) is formed in one end, facing the outer side of the drilling rod (1), of each sliding rod (26), and a cone portion (29) is arranged at one end, facing the outer side of the drilling rod (1), of each sliding rod (26).
9. An apparatus for sampling a groundwater sample for engineering geological exploration according to claim 8, wherein: be provided with extension spring (27) on slide bar (26), the both ends of extension spring (27) respectively with spout (17) and slide bar (26) fixed connection.
10. A method of using an apparatus for taking samples of groundwater for engineering geological exploration according to claim 9, characterized by the steps of;
a step a; the drill rod (1) is inserted into the ground, the insertion depth is deeper than the underground waterline, the water intake in the invention is arranged at one side of the opening of the drill rod (1), and the arrangement can lead the opening cover (7) to play a role of surrounding and shielding the water intake, further prevent silt from falling to the water intake of the outer rod (4), play a role of enhancing water quality and prevent the silt from blocking a filter screen at the water intake;
b, performing a step; the first rotating disc (9) is rotated, the drill rod (1) is driven to rotate by the first rotating disc (9), the drill rod (1) keeps a static state of the outer rod (4) when rotating, the drill rod (1) and the outer rod (4) move relatively, soil at the opening cover (7) can be continuously extruded and tamped, and a cavity (14) with a narrow top and a wide bottom is formed between the opening cover (7) and the soil;
c, performing a step; the inner rod (12) is rotated to enable a water inlet (20) on the inner rod (12) to be aligned with a first filter screen (5) at the height required to take water, negative pressure is applied to the water taking pipe (13), and underground water can emerge through a second filter screen (8) at the opening cover (7), the opening of the drill rod (1), the first filter screen (5), the water inlet (20), the inner rod and the water taking pipe (13) to realize sampling;
step d; the inner side of the drill rod (1) is pressurized through the water taking pipe (13), and under the action of high pressure, silt on the inner side of the bottom end of the drill rod (1) can be discharged through the sliding rod (26) and the outlet (28), so that cleaning is realized.
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Cited By (1)
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| CN116735283A (en) * | 2023-06-21 | 2023-09-12 | 南京信息工程大学 | Ocean sediment layered sampler |
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