CN214471967U

CN214471967U - Groundwater depthkeeping sampling device for hydrogeological survey

Info

Publication number: CN214471967U
Application number: CN202120655977.2U
Authority: CN
Inventors: 王小海
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-10-22
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses a hydrogeology investigation is with groundwater depthkeeping sampling device, including U-shaped mounting bracket and the transparent sampling box of setting in U-shaped mounting bracket below, rotate between the both sides inner wall of U-shaped mounting bracket and install the pivot, fixed cover is equipped with the spool in the pivot, around establishing and being fixed with the stay cord on the spool, one side of stay cord is equipped with the scale mark, and the right-hand member of pivot extends to the right side and the fixedly connected with rocking disc of U-shaped mounting bracket, and the fastening of rocking disc screw thread is on the right side of U-shaped mounting bracket, the bottom of stay cord and the top fixed connection of transparent sampling box, and the bottom of transparent sampling box is established to the opening. The utility model relates to a rationally, be convenient for carry out the shutoff with the sample after before the sample to two inlet openings, the phenomenon in the transparent sample box is entered into to upper river water in the in-process that can avoid shifting up the transparent sample box appears, avoids the mixture of water sample, realizes the depthkeeping sample, and is convenient for accomplish the timely shutoff inlet opening in back at the sample, satisfies the user demand.

Description

Groundwater depthkeeping sampling device for hydrogeological survey

Technical Field

The utility model relates to a groundwater depthkeeping sampling equipment technical field especially relates to a groundwater depthkeeping sampling device for hydrogeological survey.

Background

Hydrogeology is a law for researching the change of the quantity and quality of underground water along with space, underground water is reasonably utilized or harm of the underground water is prevented and controlled, the underground water is buried, distributed and moved differently under different environments, the underground water level is dynamically monitored for a long time during hydrogeology exploration, in order to comprehensively and accurately know the underground water condition, the underground water needs to be sampled and processed by a sampling device, so that subsequent hydrogeology research and processing are facilitated, most of commonly used water sampling devices directly place a sampling barrel in river water, water in the river water enters a sampling barrel under the action of self pressure, and then the sampling barrel is taken out by an extraction device;

however, the existing sampling mode cannot meet the requirement of depth-fixed sampling, and the sampling barrel is in the process of upwards lifting, so that the phenomenon that river water on the upper layer enters the sampling barrel easily occurs, the obtained water samples are mixed water samples of the upper layer and the lower layer, the detection result of the water samples is influenced, and the requirement of depth-fixed stable sampling cannot be met, so that the underground depth-fixed sampling device for hydrogeological survey is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a hydrogeology investigation underground water depthkeeping sampling device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a groundwater depthkeeping sampling device for hydrogeological investigation comprises a U-shaped mounting frame and a transparent sampling box arranged below the U-shaped mounting frame, wherein a rotating shaft is rotatably arranged between the inner walls of the two sides of the U-shaped mounting frame, a winding shaft is fixedly sleeved on the rotating shaft, a pull rope is wound and fixed on the winding shaft, a scale mark is arranged on one side of the pull rope, the right end of the rotating shaft extends to the right side of the U-shaped mounting frame and is fixedly connected with a rocking disc, the rocking disc is fastened on the right side of the U-shaped mounting frame in a threaded manner, the bottom end of the pull rope is fixedly connected with the top of the transparent sampling box, the bottom of the transparent sampling box is provided with an opening, the bottom of the transparent sampling box is fixedly connected with a balancing weight, water inlet holes are formed in the inner walls of the two sides of the transparent sampling box, a filter screen is fixedly sleeved in each water inlet hole, a plugging pipe is sleeved on the transparent sampling box in a sealing and sliding manner, the plugging pipe is matched with the two water inlet holes, a movable plate is arranged above the transparent sampling box, the movable plate is sleeved on the pull rope, the two sides of the top end of the plugging tube are fixedly connected with rectangular rods, the tops of the two sides of the transparent sampling box are fixedly connected with positioning sleeves, the positioning sleeves are slidably sleeved on the corresponding rectangular rods, a floating block is arranged in the transparent sampling box, the inner wall of the right side of the transparent sampling box is fixedly connected with a limiting block, the top of the limiting block is movably contacted with one side of the bottom of the floating block, one side of the top of the floating block is fixedly connected with a positioning rod, the top of the positioning rod extends to the upper part of the movable plate, the movable plate is slidably sleeved on the positioning rod, the transparent sampling box is hermetically and slidably sleeved on the positioning rod, a one-way valve is embedded on the inner wall of the top of the transparent sampling box, the top of the one-way valve is arranged as an outlet, a cross rod is fixedly connected between the inner walls of the two sides of the transparent sampling box, the cross rod is slidably sleeved on the positioning rod, and one side of the top of the transparent sampling box is embedded with an electric telescopic rod, electric telescopic handle's output top extend to transparent sampling box's top and with bottom one side fixed connection of movable plate, transparent sampling box's top fixedly connected with apron, the mounting groove has been seted up to transparent sampling box's top one side, the apron cooperatees with the mounting groove, fixedly connected with battery and wireless remote switch on the bottom inner wall of mounting groove, electric telescopic handle and wireless remote switch all with battery electric connection, wireless remote switch and electric telescopic handle electric connection, wireless remote switch matches and is provided with external remote controller, bottom one side fixedly connected with reverse start switch of horizontal pole, top one side fixedly connected with of floating block presses the briquetting, reverse start switch cooperatees with according to the briquetting, reverse start switch and electric telescopic handle and battery electric connection.

Preferably, the blocking pipe is internally provided with a first sealing rubber sleeve in a bonding and sleeving manner, and the inner side of the first sealing rubber sleeve is movably contacted with the outer side of the transparent sampling box.

Preferably, a first groove is formed in one side of the top of the transparent sampling box, and the inner wall of the first groove is fixedly connected with the outer side of the electric telescopic rod.

Preferably, a perforation is formed in the inner wall of the top of the transparent sampling box, a second sealing rubber sleeve is sleeved on the inner fixing sleeve of the perforation, and the inner wall of the second sealing rubber sleeve is connected with the outer side of the positioning rod in a sliding mode.

Preferably, the top of the movable plate is provided with a first rectangular hole and a first through hole, the inner wall of the first rectangular hole is in movable contact with the outer side of the positioning rod, the pull rope is located in the first through hole and is not in contact with the inner wall of the first through hole, one side of the top of the cross rod is provided with a second rectangular hole, and the inner wall of the second rectangular hole is in sliding connection with the outer side of the positioning rod.

Preferably, a second through hole is formed in one side of the top of the cover plate, a third sealing rubber sleeve is bonded and sleeved in the second through hole, and the inner wall of the third sealing rubber sleeve is in movable contact with the outer side of the extending end of the electric telescopic rod.

Preferably, circular holes are formed in inner walls of two sides of the U-shaped mounting frame, a bearing is sleeved in each circular hole, the inner side of each bearing is fixedly connected with the outer side of the corresponding rotating shaft, the right side of the U-shaped mounting frame is in close contact with a T-shaped fastening bolt, a threaded hole is formed in one side of the rocking disc, and the threaded hole is in threaded connection with the T-shaped fastening bolt.

Compared with the prior art, the beneficial effects of the utility model are that:

the transparent sampling box is fixed by matching a U-shaped mounting rack, a winding shaft, a pull rope, a transparent sampling box, a plugging pipe, a balancing weight, a water inlet hole, a rectangular rod, a movable plate, a positioning sleeve, an electric telescopic rod, a cover plate, a mounting groove, a storage battery, a wireless remote control switch, a floating block, a positioning rod, a transverse rod and a pressing block with a reverse starting switch, moving the whole device to a position needing sampling, positively rotating a T-shaped fastening bolt to remove the fixation of a rocking disc, then positively rotating the rocking disc to drive the winding shaft to release the pull rope through a rotating shaft, at the moment, under the action of self gravity, the balancing weight drives the transparent sampling box to downwards move into underground water, judging that the transparent sampling box downwards moves to a required depth through a scale mark on the pull rope, stopping rotating the rocking disc, and then reversely rotating the T-shaped fastening bolt to move to be in close contact with the right side of the U-shaped mounting rack, the electric telescopic rod is started positively, the electric telescopic rod drives the plugging pipe to move upwards through the movable plate and the two rectangular rods in sequence to remove plugging of the two water inlet holes, at the moment, underground water passes through the two water inlet holes to enter the transparent sampling box under the pressure action of the underground water, the filter screen filters impurities in the entering water, the floating block drives the pressing block to press the reverse starting switch upwards under the buoyancy action of the water along with the entering of the underground water, and the reverse starting switch controls the electric telescopic rod to be started reversely, so that the plugging pipe drives the first sealing rubber sleeve to plug the two water inlet holes downwards;

rotate T shape fastening bolt and remove the fixed of shaking the dish immediately, the antiport shakes the dish, shakes the dish and drives the spool through the pivot and twines the rolling to the stay cord, and the stay cord drives transparent sampling box and upwards shifts out from the groundwater, and positive start electric telescopic handle once more immediately removes the shutoff to the inlet opening, and groundwater is under self action of gravity this moment, through two inlet opening discharge samples completion.

The utility model relates to a rationally, be convenient for carry out the shutoff with the sample after before the sample to two inlet openings, the phenomenon in the transparent sample box is entered into to upper river water in the in-process that can avoid shifting up the transparent sample box appears, avoids the mixture of water sample, realizes the depthkeeping sample, and is convenient for accomplish the timely shutoff inlet opening in back at the sample, satisfies the user demand.

Drawings

Fig. 1 is a schematic view of a partial cross-sectional structure of an underground water depth-setting sampling device for hydrogeological investigation according to the present invention;

FIG. 2 is an enlarged cross-sectional view of portion A of FIG. 1;

fig. 3 is an enlarged schematic structural view of a portion B in fig. 2.

In the figure: 100U-shaped mounting bracket, 101 spool, 102 stay cord, 1 transparent sampling box, 2 shutoff pipes, 3 balancing weights, 4 inlet openings, 5 rectangular poles, 6 movable plates, 7 position sleeve, 8 electric telescopic handle, 9 apron, 10 mounting grooves, 11 batteries, 12 wireless remote control switches, 13 float piece, 14 locating levers, 15 horizontal poles, 16 press piece, 17 reverse starting switch.

Detailed Description

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.

Referring to fig. 1-3, a groundwater depth-setting sampling device for hydrogeological survey, comprising a U-shaped mounting frame 100 and a transparent sampling box 1 disposed below the U-shaped mounting frame 100, a rotating shaft is rotatably mounted between the inner walls of the two sides of the U-shaped mounting frame 100, a winding shaft 101 is fixedly sleeved on the rotating shaft, a pulling rope 102 is wound on the winding shaft 101 and fixed thereon, one side of the pulling rope 102 is provided with a scale mark, the right end of the rotating shaft extends to the right side of the U-shaped mounting frame 100 and is fixedly connected with a rocking disc, the rocking disc is fastened on the right side of the U-shaped mounting frame 100 by screw threads, the bottom end of the pulling rope 102 is fixedly connected with the top of the transparent sampling box 1, the bottom of the transparent sampling box 1 is provided with an opening, the bottom of the transparent sampling box 1 is fixedly connected with a balancing weight 3, water inlet holes 4 are disposed on the inner walls of the two sides of the transparent sampling box 1, a filter screen is fixedly sleeved in the water inlet holes 4, a sealing and sliding sleeve of the transparent sampling box 1 is provided with a plugging tube 2, the plugging tube 2 is matched with the two water inlet holes 4, a movable plate 6 is arranged above the transparent sampling box 1, the movable plate 6 is sleeved on the pull rope 102, the two sides of the top end of the plugging tube 2 are fixedly connected with rectangular rods 5, the tops of the two sides of the transparent sampling box 1 are fixedly connected with positioning sleeves 7, the positioning sleeves 7 are slidably sleeved on the corresponding rectangular rods 5, a floating block 13 is arranged in the transparent sampling box 1, a limiting block is fixedly connected on the inner wall of the right side of the transparent sampling box 1, the top of the limiting block is movably contacted with one side of the bottom of the floating block 13, one side of the top of the floating block 13 is fixedly connected with a positioning rod 14, the top of the positioning rod 14 extends to the upper part of the movable plate 6, the movable plate 6 is slidably sleeved on the positioning rod 14, the transparent sampling box 1 is hermetically and slidably sleeved on the positioning rod 14, a one-way valve is embedded on the inner wall of the top of the transparent sampling box 1, and the top of the one-way valve is arranged as an outlet, a cross rod 15 is fixedly connected between the inner walls of two sides of the transparent sampling box 1, the cross rod 15 is slidably sleeved on a positioning rod 14, one side of the top of the transparent sampling box 1 is embedded with an electric telescopic rod 8, the top end of the output end of the electric telescopic rod 8 extends to the upper part of the transparent sampling box 1 and is fixedly connected with one side of the bottom of the movable plate 6, the top of the transparent sampling box 1 is fixedly connected with a cover plate 9, one side of the top of the transparent sampling box 1 is provided with a mounting groove 10, the cover plate 9 is matched with the mounting groove 10, the inner wall of the bottom of the mounting groove 10 is fixedly connected with a storage battery 11 and a wireless remote control switch 12, the electric telescopic rod 8 and the wireless remote control switch 12 are both electrically connected with the storage battery 11, the wireless remote control switch 12 is electrically connected with the electric telescopic rod 8, the wireless remote control switch 12 is matched with an external remote controller, one side of the bottom of the cross rod 15 is fixedly connected with a reverse starting switch 17, the top one side fixedly connected with of floating block 13 presses the briquetting 16, and reverse starting switch 17 cooperatees with pressing briquetting 16, reverse starting switch 17 and electric telescopic handle 8 and battery 11 electric connection, the utility model relates to a rationally, be convenient for carry out the shutoff with sample back to two inlet openings 4 before the sample, can avoid the in-process of shifting up transparent sampling box 1 to appear the phenomenon that upper river water enters into transparent sampling box 1, avoid the mixture of water sample, realize the depthkeeping sample, and be convenient for in time shutoff inlet opening 4 after the sample is accomplished, satisfy the user demand.

In the utility model, a first sealing rubber sleeve is adhered and sleeved in the plugging tube 2, the inner side of the first sealing rubber sleeve is movably contacted with the outer side of the transparent sampling box 1, a first groove is arranged on one side of the top of the transparent sampling box 1, the inner wall of the first groove is fixedly connected with the outer side of the electric telescopic rod 8, a perforation is arranged on the inner wall of the top of the transparent sampling box 1, a second sealing rubber sleeve is fixedly sleeved in the perforation, the inner wall of the second sealing rubber sleeve is slidably connected with the outer side of the positioning rod 14, a first rectangular hole and a first through hole are arranged on the top of the movable plate 6, the inner wall of the first rectangular hole is movably contacted with the outer side of the positioning rod 14, the pull rope 102 is positioned in the first through hole and is not contacted with the inner wall of the first through hole, a second rectangular hole is arranged on one side of the top of the cross rod 15, the inner wall of the second rectangular hole is slidably connected with the outer side of the positioning rod 14, a second through hole is arranged on one side of the top of the cover plate 9, the cover that bonds in the second through-hole is equipped with the sealed gum cover of third, the inner wall of the sealed gum cover of third and the end outside movable contact that stretches out of electric telescopic handle 8, the circular port has all been seted up on the both sides inner wall of U-shaped mounting bracket 100, the circular port internal fixation cover is equipped with the bearing, the inboard outside fixed connection with the pivot of inner circle of bearing, the right side in close contact with of U-shaped mounting bracket 100 has T shape fastening bolt, the threaded hole is seted up to one side of rocking disc, screw hole and T shape fastening bolt threaded connection, the utility model relates to a rationally, be convenient for carry out the shutoff to two inlet openings 4 before the sample and after the sample, can avoid the in-process of shifting up transparent sampling box 1 to appear the phenomenon that the upper river enters into transparent sampling box 1, avoid the mixture of water sample, realize the depthkeeping sample, and be convenient for in time the shutoff inlet opening 4 after the sample is accomplished, satisfy the user demand.

The working principle is as follows: when the device is used, during sampling operation, the whole device is moved to a position needing sampling, the T-shaped fastening bolt is rotated in the forward direction, under the action of a threaded hole formed in the rocking disc, the T-shaped fastening bolt is gradually separated from the U-shaped mounting frame 100 while rotating, then the rocking disc is rotated in the forward direction, the rocking disc drives the winding shaft 101 to rotate through the rotating shaft, the pulling rope 102 is released while the winding shaft 101 rotates, at the moment, the balancing weight 3 moves downwards under the action of self gravity, the balancing weight 3 drives the transparent sampling box 1 to move downwards into underground water, when the transparent sampling box 1 is judged to move downwards to a required depth through a scale mark on the pulling rope 102, the rotation of the rocking disc is stopped, then the T-shaped fastening bolt is rotated in the reverse direction, the T-shaped fastening bolt moves to be in close contact with the right side of the U-shaped mounting frame 100 while rotating, under the action of friction force between the T-shaped fastening bolt and the U-shaped mounting frame 100, then the transparent sampling box 1 is fixed, then the wireless remote control switch 12 is controlled by an external remote controller to control the forward start of the electric telescopic rod 8, the output shaft of the electric telescopic rod 8 drives the movable plate 6 to move upwards, the movable plate 6 drives the two rectangular rods 5 to slide upwards in the corresponding positioning sleeves 7 respectively, the two rectangular rods 5 simultaneously drive the plugging pipe 2 to move upwards, the plugging pipe 2 drives the first sealing rubber sleeve to stagger upwards with the two water inlet holes 4, the plugging of the water inlet holes 4 is released, at the moment, underground water passes through the two water inlet holes 4 to enter the transparent sampling box 1 under the self pressure effect of the underground water, the filter screen filters impurities in the entering water, along with the entering of the underground water, the floating block 13 floats upwards gradually under the buoyancy effect of the water, the floating block 13 drives the pressing block 16 to move upwards, the pressing block 16 upwards presses the reverse start switch 17, the reverse starting switch 17 controls the electric telescopic rod 8 to be started reversely, and similarly, the motion process of the electric telescopic rod 8 is opposite to that of the forward starting, so that the movable plate 6 and the plugging pipe 2 are both moved downwards, the movable plate 6 slides downwards on the positioning rod 14, and the plugging pipe 2 drives the first sealing rubber sleeve to plug the two water inlet holes 4 downwards;

the fixing of the rocking disc is released by rotating the T-shaped fastening bolt, the rocking disc is reversely rotated, the rocking disc drives the winding shaft 101 to wind and roll the pull rope 102 through the rotating shaft, the pull rope 102 drives the transparent sampling box 1 to move upwards and move out of underground water, then the electric telescopic rod 8 is started forward again, the plugging pipe 2 moves upwards to remove the plugging of the water inlet 4, at the moment, underground water is discharged through the two water inlet 4 under the action of self gravity, the floating block 13 gradually moves downwards to be contacted with the top of the limiting block along with the discharge of water, the sampling is completed, the two water inlet 4 are convenient to plug before and after the sampling, the phenomenon that upper river water enters the transparent sampling box 1 in the process of moving the transparent sampling box 1 can be avoided, the mixing of water samples is avoided, the fixed-depth sampling is realized, the arrangement of the floating block 13 is convenient to control the reverse starting of the electric telescopic rod 8 in time after the sampling is completed, and (4) plugging the water inlet hole 4.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The underground water depth-setting sampling device for the hydrogeological survey comprises a U-shaped mounting rack (100) and a transparent sampling box (1) arranged below the U-shaped mounting rack (100), and is characterized in that a rotating shaft is rotatably arranged between the inner walls of two sides of the U-shaped mounting rack (100), a winding shaft (101) is fixedly sleeved on the rotating shaft, a pull rope (102) is wound on the winding shaft (101) and fixed on the winding shaft, one side of the pull rope (102) is provided with scale marks, the right end of the rotating shaft extends to the right side of the U-shaped mounting rack (100) and is fixedly connected with a rocking disc, the rocking disc is fastened on the right side of the U-shaped mounting rack (100) through threads, the bottom end of the pull rope (102) is fixedly connected with the top of the transparent sampling box (1), the bottom of the transparent sampling box (1) is provided with an opening, the bottom of the transparent sampling box (1) is fixedly connected with a balancing weight (3), water inlet holes (4) are formed in the inner walls of two sides of the transparent sampling box (1), a filter screen is fixedly sleeved in the water inlet holes (4), a plugging pipe (2) is sleeved on the transparent sampling box (1) in a sealing and sliding manner, the plugging pipe (2) is matched with the two water inlet holes (4), a movable plate (6) is arranged above the transparent sampling box (1), the movable plate (6) is sleeved on the pull rope (102), rectangular rods (5) are fixedly connected to both sides of the top end of the plugging pipe (2), positioning sleeves (7) are fixedly connected to both sides of the top of the transparent sampling box (1), the positioning sleeves (7) are sleeved on the corresponding rectangular rods (5) in a sliding manner, a floating block (13) is arranged in the transparent sampling box (1), a limiting block is fixedly connected to the inner wall of the right side of the transparent sampling box (1), the top of the limiting block is in movable contact with one side of the bottom of the floating block (13), a positioning rod (14) is fixedly connected to one side of the top of the floating block (13), and the top of the positioning rod (14) extends to the upper part of the movable plate (6), the movable plate (6) is sleeved on the positioning rod (14) in a sliding mode, the transparent sampling box (1) is sleeved on the positioning rod (14) in a sealing sliding mode, a check valve is embedded on the inner wall of the top of the transparent sampling box (1), an outlet is formed in the top of the check valve, a cross rod (15) is fixedly connected between the inner walls of the two sides of the transparent sampling box (1), the cross rod (15) is sleeved on the positioning rod (14) in a sliding mode, an electric telescopic rod (8) is embedded on one side of the top of the transparent sampling box (1), the top end of the output end of the electric telescopic rod (8) extends to the upper portion of the transparent sampling box (1) and is fixedly connected with one side of the bottom of the movable plate (6), a cover plate (9) is fixedly connected to the top of the transparent sampling box (1), a mounting groove (10) is formed in one side of the top of the transparent sampling box (1), the cover plate (9) is matched with the mounting groove (10), a storage battery (11) and a wireless remote control switch (12) are fixedly connected to the inner wall of the bottom of the mounting groove (10), electric telescopic handle (8) and wireless remote control switch (12) all with battery (11) electric connection, wireless remote control switch (12) and electric telescopic handle (8) electric connection, wireless remote control switch (12) matching is provided with outside remote controller, bottom one side fixedly connected with reverse start switch (17) of horizontal pole (15), top one side fixedly connected with of showy piece (13) presses piece (16), reverse start switch (17) and press piece (16) to cooperate, reverse start switch (17) and electric telescopic handle (8) and battery (11) electric connection.

2. The groundwater depth-setting sampling device for hydrogeological investigation as claimed in claim 1, wherein the plugging tube (2) is internally bonded and sleeved with a first sealing rubber sleeve, and the inner side of the first sealing rubber sleeve is movably contacted with the outer side of the transparent sampling box (1).

3. The underground fixed-depth sampling device for hydrogeological investigation according to claim 1, characterized in that a first groove is formed on one side of the top of the transparent sampling box (1), and the inner wall of the first groove is fixedly connected with the outer side of the electric telescopic rod (8).

4. The underground fixed-depth sampling device for hydrogeological investigation as recited in claim 1, characterized in that the top inner wall of the transparent sampling box (1) is provided with a through hole, a second sealing rubber sleeve is fixedly sleeved in the through hole, and the inner wall of the second sealing rubber sleeve is connected with the outer side of the positioning rod (14) in a sliding manner.

5. The groundwater depth-setting sampling device for hydrogeological investigation as recited in claim 1, wherein the top of the moving plate (6) is provided with a first rectangular hole and a first through hole, the inner wall of the first rectangular hole is movably contacted with the outer side of the positioning rod (14), the pull rope (102) is positioned in the first through hole and is not contacted with the inner wall of the first through hole, one side of the top of the cross bar (15) is provided with a second rectangular hole, and the inner wall of the second rectangular hole is slidably connected with the outer side of the positioning rod (14).

6. The underground depth-setting sampling device for hydrogeological investigation as claimed in claim 1, wherein a second through hole is formed in one side of the top of the cover plate (9), a third sealing rubber sleeve is bonded and sleeved in the second through hole, and the inner wall of the third sealing rubber sleeve is in movable contact with the outer side of the extending end of the electric telescopic rod (8).

7. The groundwater depthkeeping sampling device for hydrogeological survey according to claim 1, characterized in that circular holes are all opened on the both sides inner wall of U-shaped mounting bracket (100), the circular holes are fixedly sleeved with bearings, the inner side of the inner ring of the bearing is fixedly connected with the outside of the rotating shaft, the right side of U-shaped mounting bracket (100) is closely contacted with T-shaped fastening bolt, one side of the rocking disc is opened with threaded hole, and the threaded hole is in threaded connection with T-shaped fastening bolt.