CN216432976U

CN216432976U - Underground water depth observation device for hydrogeological exploration

Info

Publication number: CN216432976U
Application number: CN202122721111.XU
Authority: CN
Inventors: 梁鹏飞; 郝嘉伟
Original assignee: HEBEI XINYE ENGINEERING TECHNOLOGY CO LTD
Current assignee: HEBEI XINYE ENGINEERING TECHNOLOGY CO LTD
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-05-03
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a groundwater degree of depth observation device for hydrogeological exploration, including the diaphragm, the top fixed mounting of diaphragm has the handle, and the bottom fixed mounting of diaphragm has left riser and right riser, and the equal fixed mounting in bottom of left riser and right riser has two inserted bars, and the mounting hole has been seted up to one side of left riser, and the transmission shaft is installed in the mounting hole rotation, and outside the both ends of transmission shaft all extended to the mounting hole, fixed cover was equipped with the wire reel that is located between left riser and the right riser on the transmission shaft, around being equipped with the measuring rope on the wire reel. The utility model relates to a rationally, the practicality is good, is convenient for place equipment firm subaerial, does not need staff handheld device to measure, and labour saving and time saving makes things convenient for the measurement work of the groundwater degree of depth moreover, makes things convenient for the staff accuracy to read the measured value of the groundwater depth, and the measuring that can be accurate measures the degree of depth of groundwater, has improved measuring result's accuracy nature.

Description

Underground water depth observation device for hydrogeological exploration

Technical Field

The utility model relates to a hydrogeological exploration technical field specifically is a groundwater degree of depth observation device for hydrogeological exploration.

Background

Hydrogeological exploration refers to hydrogeological investigation and research work carried out for finding out hydrogeological conditions of an area, and aims to master the causes, distribution and motion rules of underground water and surface water, provide basis for reasonably exploiting and utilizing water resources and correctly designing and constructing foundations and piling projects, and generally measure the depth of underground water in the hydrogeological exploration process.

However, in the prior art, when the common underground water depth observation device for hydrogeological exploration is used, the depth of underground water is usually measured by a worker holding the device, the operation process is time-consuming and labor-consuming, inconvenience is brought to measurement operation, and the measurement result is usually a measurement value observed by remote visual observation.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a groundwater degree of depth observation device for hydrogeological exploration has solved current groundwater degree of depth observation equipment for hydrogeological exploration when using, is usually that staff's handheld device measures the degree of depth of groundwater, and the operation process is wasted time and energy, and it is inconvenient to bring for measurement operation, and the measuring result is the remote range estimation usually moreover and observes out the measured value, and the result of remote range estimation is accurate inadequately, leads to the not accurate enough problem of measured value to the groundwater depth.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a groundwater degree of depth observation device for hydrogeological exploration, including the diaphragm, the top fixed mounting of diaphragm has the handle, the bottom fixed mounting of diaphragm has left riser and right riser, the equal fixed mounting in bottom of left riser and right riser has two inserted bars, the mounting hole has been seted up to one side of left riser, the transmission shaft is installed in the mounting hole rotation, the both ends of transmission shaft all extend outside the mounting hole, fixed cover is equipped with the wire reel that is located between left riser and the right riser on the transmission shaft, around being equipped with measuring rope on the wire reel, the one end that right riser was kept away from to the transmission shaft is provided with locating component, the movable sleeve is equipped with the kickboard on the measuring rope, the one end fixed mounting that wire reel was kept away from to measuring rope has the counter weight seat, the bottom of kickboard contacts with the top of counter weight seat, the below of diaphragm is provided with locking Assembly.

Preferably, the locating component includes handle and positioning bolt, and handle fixed mounting has seted up first screw hole in the one end that right riser was kept away from to the transmission shaft, and the positioning bolt screw thread is installed at first screw hole, and positioning bolt's both ends all extend to outside the first screw hole, and a plurality of constant head tanks have been seted up to one side that right riser was kept away from to left riser, and a plurality of constant head tanks use the transmission shaft to be equidistant annular and arrange as the center, and positioning bolt's one end extends to in the constant head tank in a plurality of constant head tanks.

Preferably, the locking assembly comprises an annular cover, an annular inflatable bag, a shaft seat, a transverse shaft, a pipe winding disc, a gas pipe, a gas pump and a locking bolt, the annular cover is fixedly arranged at the top of the floating plate, the top and the bottom of the annular cover are both of an open structure, the annular inflatable bag is fixedly arranged on the inner wall of the annular cover, one end of the measuring rope penetrates through the annular inflatable bag, the shaft seat is fixedly arranged at one side, close to a left vertical plate, of a right vertical plate, the transverse shaft is rotatably arranged on the shaft seat, the pipe winding disc is fixedly sleeved on the transverse shaft, the gas pipe is wound on the pipe winding disc, one end, far away from the pipe winding disc, of the gas pipe extends into the annular cover and is fixedly connected with the top of the annular inflatable bag, the gas pipe is communicated with the inside of the annular inflatable bag, the gas pump is fixedly arranged at one side, far away from the shaft seat, of the gas pipe is fixedly connected with the discharge end of the gas pipe, far away from the annular inflatable bag, the transmission shaft is provided with a slot, in the axle bed was kept away from to the cross axle one end extended to the slot, seted up the second screw hole on the top inner wall of slot, the locking bolt screw thread was installed at the second screw hole, outside the both ends of locking bolt all extended to the second screw hole, the draw-in groove had been seted up at the top of cross axle, the bottom of locking bolt extended to in the draw-in groove.

Preferably, a storage battery pack and a control switch are fixedly mounted on one side, far away from the shaft seat, of the pipe winding disc.

Preferably, the top of the annular inflatable bag is fixedly provided with an air discharging pipe, the air discharging pipe is communicated with the inside of the annular inflatable bag, and the top end of the air discharging pipe extends to the outside of the annular cover and is provided with a plug in a threaded manner.

Preferably, the transmission shaft is fixedly sleeved with a bearing, and an outer ring of the bearing is fixedly connected with the inner wall of the mounting hole.

(III) advantageous effects

The utility model provides a groundwater degree of depth observation device for hydrogeological exploration. The method has the following beneficial effects:

(1) this a groundwater degree of depth observation device for hydrogeological exploration through setting up the handle, conveniently carries this equipment is whole, inserts suitable degree of depth in the ground soil through the bottom with four inserted bars, can place this equipment is firm subaerial, does not need staff handheld device to measure labour saving and time saving, convenient subsequent measurement operation.

(2) This a groundwater degree of depth observation device for hydrogeological exploration, through outside the corresponding constant head tank of positioning bolt back-out, clockwise turning handle, steerable transmission shaft, the wire reel, cross axle and tube reel rotate, the measuring rope is around outside the wire reel gradually, the gas-supply pipe is around outside the tube reel gradually, make counter weight seat, the kickboard, annular cover and annular gas cell move down in drilling or the well head, the kickboard moves down when contacting with the surface of water, utilize the buoyancy of kickboard, make the kickboard float on the surface of water, through twisting locking bolt out outside the draw-in groove, resume clockwise turning handle again, the handle only drives transmission shaft and wire reel and rotates, counter weight seat drives the measuring rope and continues to sink, when the counter weight seat sinks to the bottom, twist positioning bolt in the corresponding constant head tank, can restrict the rotation of transmission shaft and cross axle.

(3) The underground water depth observation device for hydrogeological exploration works by starting the air pump, the annular inflatable bag can be inflated and gradually expanded, the annular inflatable bag can be clamped on the measuring rope by utilizing the inflated annular inflatable bag, and the floating plate can be clamped and fixed on the measuring rope, then the positioning bolt is screwed out of the corresponding positioning groove, the locking bolt is screwed into the clamping groove, the handle is rotated anticlockwise, so that the wire spool gradually winds the measuring rope, the pipe spool gradually winds the gas pipe, the measuring rope drives the counterweight seat and the floating plate which is clamped and fixed to ascend, when the floating plate ascends to the outside of a drilling hole or a well mouth, a worker observes the scale mark and the scale value on the floating plate corresponding to the measuring rope, the depth value of the underground water is obtained, so that the depth value of the underground water can be accurately measured, and the accuracy of the measurement result is improved.

(4) This a groundwater degree of depth observation device for hydrogeological exploration through unscrewing the end cap, can arrange the air in the annular gas cell and fall, can remove the fixed to the kickboard, outside screwing out the draw-in groove with the locking bolt, continues anticlockwise rotation handle, and the handle only drives transmission shaft and wire reel and rotates, can continue to carry out the rolling to the measuring rope, alright promote the counter weight seat outside drilling or the well head.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic sectional view of the main view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 2;

fig. 5 is an enlarged schematic view of a portion C in fig. 2.

In the figure: 1. a transverse plate; 2. a handle; 3. a left riser; 4. a right vertical plate; 5. inserting a rod; 6. a drive shaft; 7. a wire spool; 8. measuring a rope; 9. a handle; 10. positioning a bolt; 11. positioning a groove; 12. a floating plate; 13. a counterweight seat; 14. an annular shroud; 15. an annular inflatable bag; 16. a shaft seat; 17. a horizontal axis; 18. winding a pipe disc; 19. a gas delivery pipe; 20. an air pump; 21. a slot; 22. locking the bolt; 23. a card slot; 24. a battery pack; 25. a control switch; 26. discharging the air pipe; 27. and (7) a plug.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner," and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-5, the utility model provides a technical solution: a groundwater depth observation device for hydrogeological exploration comprises a transverse plate 1, a handle 2 is fixedly installed at the top of the transverse plate 1, a left vertical plate 3 and a right vertical plate 4 are fixedly installed at the bottom of the transverse plate 1, two insertion rods 5 are fixedly installed at the bottoms of the left vertical plate 3 and the right vertical plate 4, a mounting hole is formed in one side of the left vertical plate 3, a transmission shaft 6 is rotatably installed in the mounting hole, two ends of the transmission shaft 6 extend out of the mounting hole, a wire winding disc 7 positioned between the left vertical plate 3 and the right vertical plate 4 is fixedly sleeved on the transmission shaft 6, a measuring rope 8 is wound on the wire winding disc 7, a scale mark and a scale interval are arranged on the measuring rope 8, a positioning component is arranged at one end of the transmission shaft 6, far away from the right vertical plate 4, the positions of the transmission shaft 6 and the wire winding disc 7 are conveniently fixed by arranging the positioning component, the rotation of the transmission shaft 6 and the wire winding disc 7 can be limited, a floating plate 12 is movably sleeved on the measuring rope 8, measuring rope 8 and keeping away from the one end fixed mounting of wire reel 7 has counter weight seat 13, and the bottom of kickboard 12 contacts with the top of counter weight seat 13, and the below of diaphragm 1 is provided with locking Assembly, through setting up locking Assembly, can fix kickboard 12 locking on measuring rope 8, and then when measuring rope and pulling out from the groundwater, conveniently observe the scale interval on the measuring rope 8, be the degree of depth of groundwater promptly, and then more accurate to the measurement of groundwater depth.

In this embodiment, the locating component includes handle 9 and positioning bolt 10, handle 9 fixed mounting keeps away from the one end of right riser 4 at transmission shaft 6, first screw hole has been seted up to one side of handle 9, positioning bolt 10 screw thread is installed in first screw hole, positioning bolt 10's both ends all extend to outside the first screw hole, a plurality of constant head tanks 11 have been seted up to one side that right riser 4 was kept away from to left riser 3, a plurality of constant head tanks 11 use transmission shaft 6 to be equidistant annular and arrange as the center, positioning bolt 10's one end extends in a constant head tank 11 in a plurality of constant head tanks 11, through the grafting cooperation that utilizes positioning bolt 10 and constant head tank 11, can fix handle 9's position, can restrict handle 9 and rotate, and then can restrict 7 rotations of wire reel.

In this embodiment, the locking assembly includes an annular cover 14, an annular inflatable bag 15, a shaft seat 16, a horizontal shaft 17, a pipe winding disc 18, an air pipe 19, an air pump 20 and a locking bolt 22, the annular cover 14 is fixedly installed on the top of the floating plate 12, the top and the bottom of the annular cover 14 are both of an open structure, the annular inflatable bag 15 is fixedly installed on the inner wall of the annular cover 14, one end of the measuring rope 8 penetrates through the annular inflatable bag 15, the shaft seat 16 is fixedly installed on one side of the right vertical plate 4 close to the left vertical plate 3, the horizontal shaft 17 is rotatably installed on the shaft seat 16, the pipe winding disc 18 is fixedly installed on the horizontal shaft 17, the air pipe 19 is wound on the pipe winding disc 18, one end of the air pipe 19 far away from the pipe winding disc 18 extends into the annular cover 14 and is fixedly connected with the top of the annular inflatable bag 15, the air pipe 19 is communicated with the inside of the annular inflatable bag 15, the air pump 20 is fixedly installed on one side of the pipe winding disc 18 far away from the shaft seat 16, one end that annular gas cell 15 was kept away from to gas-supply pipe 19 and the discharge end fixed connection of air pump 20, slot 21 has been seted up to the one end that transmission shaft 6 is close to cross axle 17, the one end that axle bed 16 was kept away from to cross axle 17 extends to in slot 21, the second screw hole has been seted up on the top inner wall of slot 21, locking bolt 22 screw thread is installed in the second screw hole, locking bolt 22's both ends all extend outside the second screw hole, draw-in groove 23 has been seted up at cross axle 17's top, locking bolt 22's bottom extends to in draw-in groove 23, through opening air pump 20 operation, can be with air transport to annular gas cell 15 in, make annular gas cell 15's volume inflation increase gradually, utilize annular gas cell 15 after aerifing to press from both sides the clamp tightly on measuring rope 8, and then can press from both sides the clamp tightly to fix on measuring rope 8 floating plate 12.

In this embodiment, a storage battery pack 24 and a control switch 25 are fixedly installed on one side of the pipe winding disc 18 away from the shaft seat 16, the air pump 20, the storage battery pack 24 and the control switch 25 are sequentially electrically connected through a conducting wire to form a loop, the storage battery pack 24 can provide electric energy for the air pump 20, and the control switch 25 can control the air pump 20 to be turned on and off.

In this embodiment, an air release pipe 26 is fixedly installed at the top of the annular inflatable bag 15, the air release pipe 26 is communicated with the inside of the annular inflatable bag 15, the top end of the air release pipe 26 extends to the outside of the annular cover 14 and is provided with a plug 27 in a threaded manner, and the air inside the annular inflatable bag 15 can be conveniently discharged by arranging the air release pipe 26 and the plug 27.

In this embodiment, fixed cover is equipped with the bearing on the transmission shaft 6, and the outer lane of bearing and the inner wall fixed connection of mounting hole play the effect of effectively supporting and fixing a position the mounted position of transmission shaft 6 through setting up the bearing for transmission shaft 6 can be in the smooth and easy rotation of steady in the mounting hole.

In this embodiment, before using, the staff opens the air pump 20 and carries out the inflation test to annular gas cell 15 in, detect whether there is the gas leakage condition annular gas cell 15, and can judge the time that full air needs in annular gas cell 15, thereby when conveniently measuring the degree of depth to groundwater, can control the time of air pump 20 operation regulation and can fill full air in annular gas cell 15, install the check valve in the gas-supply pipe 19, can avoid filling the air in annular gas cell 15 and take place the backward flow, the aperture of slot 21 is greater than the diameter of cross axle 17.

When the device is used, the lifting handle 2 is arranged, the device is conveniently carried integrally, the device is carried at a suitable position beside a drilling hole or a wellhead at a measuring place, the counterweight seat 13 and the floating plate 12 are positioned right above the drilling hole or the wellhead, the bottom ends of the four insertion rods 5 are inserted into soil on the ground to a suitable depth, the device can be stably placed on the ground, the device is not required to be held by a worker to measure, time and labor are saved, subsequent measurement operation is convenient, the fixing of the handle 9 is released by screwing the positioning bolts 10 out of the corresponding positioning grooves 11, the handle 9 is rotated clockwise, the handle 9 drives the transmission shaft 6, the winding disc 7, the transverse shaft 17 and the winding disc 18 to rotate, the measuring rope 8 gradually winds out of the winding disc 7, the gas pipe 19 gradually winds out of the winding disc 18, and the counterweight seat 13 and the floating plate 12 are under the dead weight of the counterweight seat 13, The floating plate 12, the annular cover 14 and the annular inflatable bag 15 move downwards towards the inside of a drill hole or a well mouth, when the floating plate 12 moves downwards to be in contact with the water surface, the floating plate 12 floats on the water surface by utilizing the buoyancy of the floating plate 12, then the locking bolt 22 is screwed out of the clamping groove 23, namely the connection and fixation of the transmission shaft 6 and the transverse shaft 17 are released, then the handle 9 is continuously rotated clockwise, at the moment, the handle 9 only drives the transmission shaft 6 and the winding disc 7 to rotate, the counterweight seat 13 drives the measuring rope 8 to continuously sink, the floating plate 12 continuously floats on the water surface, when the counterweight seat 13 sinks to the bottom, the handle 9 is stopped to rotate, the positioning bolt 10 is screwed into the corresponding positioning groove 11, the rotation of the transmission shaft 6 and the transverse shaft 17 can be limited, then the air pump 20 is started to work, air can be conveyed into the annular inflatable bag 15 through the air conveying pipe 19 by utilizing the operation of the air pump 20, and the annular inflatable bag 15 gradually expands and enlarges, after the air pump 20 operates for a certain time to fill the annular inflatable bag 15 with air, the air pump 20 stops operating, at this time, the annular inflatable bag 15 filled with air can be clamped on the measuring rope 8, and further, the floating plate 12 can be clamped and fixed on the measuring rope 8, then the positioning bolt 10 is screwed out of the corresponding positioning groove 11, and the locking bolt 22 is screwed into the clamping groove 23, the handle 9 rotates counterclockwise to drive the transmission shaft 6, the wire reel 7, the transverse shaft 17 and the pipe reel 18 to rotate in opposite directions, the wire reel 7 gradually winds the measuring rope 8, the pipe reel 18 gradually winds the gas pipe 19, at this time, the measuring rope 8 drives the counterweight seat 13 and the floating plate 12 fixed by clamping to rise, the floating plate 12 can rise to the outside of the drill hole or the well mouth first, at this time, a worker observes the scale mark and the scale degree value on the floating plate 12 corresponding to the measuring rope 8, and is the depth value of the underground water, therefore, the depth value of the underground water can be accurately measured, the accuracy of the measurement result is improved, after observation is finished, the plug 27 is unscrewed, air in the annular inflatable bag 15 is discharged from the air discharge pipe 26, clamping and fixing of the annular inflatable bag 15 on the measurement rope 8 are released, namely fixing of the floating plate 12 is released, the locking bolt 22 is screwed out of the clamping groove 23, the handle 9 is rotated anticlockwise continuously, the measurement rope 8 can be wound continuously only by the handle 9 driving the transmission shaft 6 and the winding disc 7 to rotate, when the counterweight seat 13 is lifted out of a drilling hole or a wellhead, the positioning bolt 10 is screwed into the corresponding positioning groove 11, the locking bolt 22 is screwed into the clamping groove 23, then a worker can pull out the four insertion rods 5 from the ground, the device can be carried to the next site to be installed, the operation step is carried out, and underground water depth measurement is continuously carried out, and the content which is not described in detail in the description belongs to the prior art known by the professional skilled in the art And (4) performing the operation.

To sum up, this a groundwater degree of depth observation device for hydrogeological exploration is convenient for place equipment firm subaerial, does not need staff handheld device to measure, and labour saving and time saving makes things convenient for the measurement work to the groundwater degree of depth, makes things convenient for the staff accuracy to read the measured value of groundwater depth moreover, can be accurate measure the degree of depth of groundwater, has improved measuring result's accuracy nature.

Claims

1. A groundwater depth observation device for hydrogeological exploration, includes diaphragm (1), its characterized in that: the top of the transverse plate (1) is fixedly provided with a handle (2), the bottom of the transverse plate (1) is fixedly provided with a left vertical plate (3) and a right vertical plate (4), the bottoms of the left vertical plate (3) and the right vertical plate (4) are both fixedly provided with two insertion rods (5), one side of the left vertical plate (3) is provided with a mounting hole, a transmission shaft (6) is rotatably mounted in the mounting hole, the two ends of the transmission shaft (6) extend out of the mounting hole, a wire winding disc (7) positioned between the left vertical plate (3) and the right vertical plate (4) is fixedly sleeved on the transmission shaft (6), a measuring rope (8) is wound on the wire winding disc (7), one end of the transmission shaft (6) far away from the right vertical plate (4) is provided with a positioning component, a floating plate (12) is movably sleeved on the measuring rope (8), one end of the measuring rope (8) far away from the wire winding disc (7) is fixedly provided with a counterweight seat (13), the bottom of the floating plate (12) is in contact with the top of the counterweight seat (13), and a locking assembly is arranged below the transverse plate (1).

2. A groundwater depth observation device for hydrogeological exploration according to claim 1, wherein: the locating component comprises a handle (9) and a locating bolt (10), the handle (9) is fixedly mounted at the position, away from the transmission shaft (6), of one end of the right vertical plate (4), a first threaded hole is formed in one side of the handle (9), the locating bolt (10) is installed in the first threaded hole in a threaded manner, two ends of the locating bolt (10) extend to the outside of the first threaded hole, the left vertical plate (3) is far away from one side of the right vertical plate (4), a plurality of locating grooves (11) are formed in one side of the right vertical plate (4) in a threaded manner and are distributed in an equidistant annular manner by taking the transmission shaft (6) as the center, and one end of the locating bolt (10) extends to a plurality of locating grooves (11) in the locating grooves (11).

3. A groundwater depth observation device for hydrogeological exploration according to claim 1, wherein: the locking assembly comprises an annular cover (14), an annular inflatable bag (15), an axle seat (16), a transverse shaft (17), a pipe winding disc (18), an air conveying pipe (19), an air pump (20) and a locking bolt (22), wherein the annular cover (14) is fixedly arranged at the top of the floating plate (12), the top and the bottom of the annular cover (14) are both of an opening structure, the annular inflatable bag (15) is fixedly arranged on the inner wall of the annular cover (14), one end of the measuring rope (8) penetrates through the annular inflatable bag (15), the axle seat (16) is fixedly arranged on one side, close to a left vertical plate (3), of the right vertical plate (4), the transverse shaft (17) is rotatably arranged on the axle seat (16), the pipe winding disc (18) is fixedly sleeved on the transverse shaft (17), the air conveying pipe (19) is wound on the pipe winding disc (18), one end of the air pipe (19) far away from the pipe winding disc (18) extends into the annular cover (14) and is fixedly connected with the top of the annular inflatable bag (15), the air pipe (19) is communicated with the inside of the annular inflatable bag (15), the air pump (20) is fixedly installed on one side of the pipe winding disc (18) far away from the shaft seat (16), one end of the air pipe (19) far away from the annular inflatable bag (15) is fixedly connected with the discharge end of the air pump (20), one end of the transmission shaft (6) close to the transverse shaft (17) is provided with a slot (21), one end of the transverse shaft (17) far away from the shaft seat (16) extends into the slot (21), the inner wall of the top of the slot (21) is provided with a second threaded hole, a locking bolt (22) is installed in the second threaded hole in a threaded manner, and two ends of the locking bolt (22) extend out of the second threaded hole, the top of the cross shaft (17) is provided with a clamping groove (23), and the bottom end of the locking bolt (22) extends into the clamping groove (23).

4. A groundwater depth observation device for hydrogeological exploration according to claim 3, wherein: and a storage battery pack (24) and a control switch (25) are fixedly mounted on one side of the pipe winding disc (18) far away from the shaft seat (16).

5. A groundwater depth observation device for hydrogeological exploration according to claim 3, wherein: the top fixed mounting of annular gas cell (15) has bleeder (26), bleeder (26) with annular gas cell (15) inside is linked together, the top of bleeder (26) extends to outer and threaded end cap (27) of annular cover (14).

6. A groundwater depth observation device for hydrogeological exploration according to claim 1, wherein: the transmission shaft (6) is fixedly sleeved with a bearing, and the outer ring of the bearing is fixedly connected with the inner wall of the mounting hole.