Dynamic monitoring and sampling device for investigating and repairing old kiln water of closed-pit coal mine

Abstract

The invention provides a dynamic monitoring and sampling device for investigating and repairing old kiln water of a closed-pit coal mine, and belongs to the technical field of old kiln water sampling, the dynamic monitoring and sampling device comprises a winding unit, a monitoring and sampling unit and a lowering unit, the winding unit is arranged above a sampling well and is provided with a first winding roller rotating around the central axis of the winding unit; the monitoring and sampling unit is provided with a sampling seat for lowering into the sampling well and a sampling part fixedly arranged on the sampling seat; a plurality of rollers which are used for abutting against the inner wall of the sampling well are mounted on the outer wall of the sampling seat, and after the sampling seat enters the sampling well, the sampling seat and the sampling well are coaxial; the lowering unit is provided with a lifting rope fixedly arranged between the first winding roller and the sampling seat and a guide part; and in the descending process of the sampling seat, the guide part enables the lifting rope to be coaxial with the sampling well. The real-time dynamic sampling of the deep old kiln water in the coal mine goaf is realized, and the sampling difficulty and the sampling cost are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of old kiln water sampling, and in particular relates to a dynamic monitoring sampling device used for investigation and repair of old kiln water in closed coal mines. Background Art

[0002] Years of large-scale mining and closure of coal mines have led to the emergence of large areas of goaf. After the goaf is gradually filled with groundwater, acid mine wastewater is formed, commonly known as "old mine water". It is a water body containing high concentrations of acidic ions (sulfate, etc.) and a large number of heavy metal ions (Fe2+, Mn2+, etc.) produced by the reaction of sulfide minerals (pyrite, etc.) exposed by coal mining activities, tailings and waste with air and water. Its pH value is usually less than 7. It is a highly acidic, highly mineralized, high hardness, and high sulfate wastewater. The environmental pollution of old mine water has become the primary problem in my country's coal mining areas. According to preliminary statistics, most goafs have accumulated a certain amount of old mine water, but the water quality and pollution status of old mine water are still unclear, and it is necessary to collect old mine water samples for water quality testing.

[0003] Before sampling the old kiln water, it is necessary to first dig a sampling well from the ground that is connected to the goaf, and then lower the sampling device into the goaf through the sampling well. Sampling will begin after the old kiln water level in the goaf reaches the preset water level.

[0004] The sampling device is usually lowered by a rope, and the sampling well is deep. If the rope is too long, it will shake, causing the sampling device to hit the inner wall of the sampling well, making it easy to be damaged. There are many collection points for old kiln water, and the sampling device needs to be replaced frequently, which has the defect of high sampling cost. Summary of the invention

[0005] The embodiment of the present invention provides a dynamic monitoring sampling device for the investigation and repair of old kiln water in closed coal mines, aiming to reduce the sampling cost while realizing real-time sampling of old kiln water.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: to provide a dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines, comprising: A winding unit, disposed above the sampling well, having a first winding roller that rotates around its own central axis; The monitoring sampling unit has a sampling seat for lowering into the sampling well, and a sampling part fixed on the sampling seat; the outer wall of the sampling seat is equipped with a plurality of rollers for abutting against the inner wall of the sampling well, and when the sampling seat enters the sampling well, the sampling seat is coaxial with the sampling well; The lowering unit comprises a suspension rope fixed between the first winding roller and the sampling seat, and a guide portion; during the lowering process of the sampling seat, the guide portion makes the suspension rope coaxial with the sampling well.

[0007] In some possible implementations, it further includes a positioning frame erected above the sampling well, the positioning frame having a transverse plate for fixing the winding unit; The guide portion comprises: A guide cylinder is fixedly mounted on the lower surface of the horizontal plate, the guide cylinder is coaxial with the sampling well, and the suspension rope passes through the central axis of the guide cylinder; Two guide wheels are arranged oppositely on both sides of the suspension rope, the two guide wheels are located on the same horizontal straight line or the two guide wheels are distributed up and down, and the guide wheels are rotatably connected with the guide cylinder around their own central axis.

[0008] In some possible implementations, it further includes a first collection tank fixedly mounted on the upper surface of the horizontal plate; The winding unit further comprises a second winding roller which rotates around its own central axis; The sampling part includes a first sampling tube and a probe, one end of the first sampling tube passes through the sampling seat and the two are fixed, the other end of the first sampling tube is connected to the first collecting tank, and the first sampling tube is wound around the second winding roller, a water pump is installed on the first sampling tube, the probe is fixed to one end of the first sampling tube passing through the sampling seat, the probe is used to identify water, and the probe is in communication connection with the water pump; When the water level of the old kiln water rises to contact the probe, the water pump starts to extract a certain amount of old kiln water through the first sampling tube and transports it to the first collection tank.

[0009] In some possible implementations, the winding unit further includes a third winding roller rotating around its own central axis; The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines also includes a self-collecting unit, which includes: Second collection tank; One end of the second sampling tube is connected to the second collecting tank, and the other end passes through the sampling seat and is wound around the third winding roller. A pressure pump is provided on the second sampling tube.

[0010] In some possible implementations, the positioning frame further includes two bases fixedly mounted on the surface of the transverse plate, the two bases are arranged opposite to each other, and the first winding roller, the second winding roller and the third winding roller are all rotatably connected between the two bases; The winding unit also includes a driving part for driving the first winding roller, the second winding roller and the third winding roller to rotate synchronously, a fourth winding roller rotating around its own central axis, and a second motor for driving the fourth winding roller to rotate, the fourth winding roller is rotatably connected to the sampling seat, and the sampling seat is penetrated by a through hole for the second sampling tube to pass through.

[0011] In some possible implementations, the driving unit includes three transmission gears and a third motor, and the three transmission gears are respectively fixed to the outer peripheries of the first winding roller, the second winding roller and the third winding roller, and the transmission gears on both sides are meshed with the transmission gear located in the middle, and the third motor is used to drive the first winding roller or the second winding roller or the third winding roller to rotate.

[0012] In some possible implementations, the positioning frame further includes two positioning seats respectively arranged on both sides of the horizontal plate, a cavity is defined in the positioning seat, and a sliding cavity is defined in the bottom wall of the positioning seat for connecting the outside with the cavity; The dynamic monitoring sampling device for water investigation in old kilns of closed coal mines also includes a fastening unit, which is arranged in the cavity. The fastening unit has a fastening rod for inserting into the ground, and an extension part for extending the fastening rod from the sliding cavity and inserting it into the ground.

[0013] In some possible implementations, the guide portion further includes a first motor corresponding one-to-one to the guide wheel, the first motor is mounted on the guide cylinder, and the first motor is used to drive the guide wheel to rotate.

[0014] In some possible implementations, a stabilizing unit is further included, which is disposed in the sampling seat. The stabilizing unit has an insertion rod inserted into the inner wall of the sampling well, has a plurality of limiting rods extending from the insertion rod, has a first power for extending the insertion rod from the sampling seat, and has a second power for extending the limiting rod from the insertion rod.

[0015] Compared with the prior art, the present invention: In the process of lowering the sampling seat by the lifting rope, the rollers on the outer periphery of the sampling seat are in contact with the inner wall of the sampling well, so that the sampling seat remains coaxial with the sampling well. At the same time, the lifting rope is kept coaxial with the sampling well through the guide part, and the sampling seat is further coaxial with the sampling well when falling. Therefore, the sampling seat will not shake when falling due to its own gravity, thereby reducing the scrapping of the sampling device due to impacting the sampling well, extending the service life of the sampling device, and thereby reducing the sampling cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a structural schematic diagram of a dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines according to an embodiment of the present invention; Figure 2 This is a cross-sectional view showing the position of the goaf according to an embodiment of the present invention; Figure 3 This is a partial schematic diagram of a positioning frame and a winding unit according to an embodiment of the present invention; Figure 4 This is a partial cross-sectional view showing that two guide wheels are distributed up and down in an embodiment of the present invention; Figure 5 This is a partial cross-sectional view of an embodiment of the present invention showing that two guide wheels are arranged on the same straight line; Figure 6 This is a partial schematic diagram of an embodiment of the present invention, showing the mode in which the monitoring sampling unit and the second sampling pipe extend into the goaf; Figure 7 is a cross-sectional view showing a method of inserting a fastening rod into the ground according to an embodiment of the present invention; Figure 8 yes Figure 7 A partial enlarged schematic diagram of part A; Fig. 9 is a schematic structural diagram of a stabilizing unit according to an embodiment of the present invention; Fig.10 It is a partial cross-sectional schematic diagram of an embodiment of the present invention, showing a stabilizing unit.

[0017] Description of reference numerals: 10. Sampling well; 20. Winding unit; 201. First winding roller; 202. Second winding roller; 203. Third winding roller; 204. Second motor; 205. Transmission gear; 206. Third motor; 207. Fourth winding roller; 30. Monitoring sampling unit; 301. Sampling seat; 3011. Roller; 3012. Through hole; 302. First sampling tube; 303. Probe; 40. lowering unit; 401. lifting rope; 402. guide cylinder; 403. guide wheel; 404. first motor; 50, positioning frame; 501, horizontal plate; 502, positioning seat; 5021, cavity; 5022, sliding cavity; 5023, rotating block; 503, base; 60. First collection tank; 70, self-collecting unit; 701, second collecting tank; 702, second sampling tube; 80, fastening unit; 801, fastening rod; 8011, spiral groove; 802, connecting plate; 803, telescopic cylinder; 90, stabilizing unit; 901, insert rod; 9011, through slot; 9012, guide block; 902, limit rod; 9021, guide slot; 903, electric cylinder; 904, fourth motor; 905, transmission roller; 9051, active bevel gear; 906, threaded sleeve; 9061, driven bevel gear; 100. Goaf. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] Please also read Figures 1 to 10 , the dynamic monitoring sampling device for water survey and repair of old kilns in closed coal mines provided by the present invention is now described. The dynamic monitoring sampling device for water survey and repair of old kilns in closed coal mines comprises a winding unit 20, a monitoring sampling unit 30 and a lowering unit 40. The winding unit 20 is arranged above the sampling well 10, and the winding unit 20 has a first winding roller 201 that rotates around its own central axis; the monitoring sampling unit 30 has a sampling seat 301 for lowering into the sampling well 10, and a sampling part fixed on the sampling seat 301; the outer wall of the sampling seat 301 is equipped with a plurality of rollers 3011 for abutting against the inner wall of the sampling well 10, and when the sampling seat 301 enters the sampling well 10, the sampling seat 301 is coaxial with the sampling well 10; the lowering unit 40 has a suspension rope 401 fixed between the first winding roller 201 and the sampling seat 301, and has a guide part; during the lowering process of the sampling seat 301, the guide part makes the suspension rope 401 coaxial with the sampling well 10.

[0020] This embodiment, compared with the prior art: In the process of lowering the sampling seat 301 by the lifting rope 401, the rollers 3011 on the outer periphery of the sampling seat 301 are in contact with the inner wall of the sampling well 10, so that the sampling seat 301 remains coaxial with the sampling well 10. At the same time, the lifting rope 401 is kept coaxial with the sampling well 10 through the guide part, and the sampling seat 301 is further coaxial with the sampling well 10 when falling. Therefore, the sampling seat 301 will not shake when falling due to its own gravity, thereby reducing the scrapping of the sampling device due to impacting the sampling well 10, extending the service life of the sampling device, and further reducing the sampling cost.

[0021] In some embodiments, see Figure 1 , Figures 3 to 5 The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines also includes a positioning frame 50 erected above the sampling well 10, and the positioning frame 50 has a horizontal plate 501 for fixing the winding unit 20.

[0022] The guide part includes a guide cylinder 402 and two guide wheels 403. The guide cylinder 402 is fixed on the lower surface of the horizontal plate 501. The guide cylinder 402 is coaxial with the sampling well 10, and the suspension rope 401 passes through the central axis of the guide cylinder 402; the two guide wheels 403 are relatively arranged on both sides of the suspension rope 401, and the two guide wheels 403 are located on the same horizontal straight line or the two guide wheels 403 are distributed up and down, and the guide wheels 403 are rotatably connected to the guide cylinder 402 around their own central axis.

[0023] It should be noted that Figure 4 The structure in FIG. 4 is that two guide wheels 403 are distributed up and down. Figure 5 The structure in FIG. 4 is a situation where two guide wheels 403 are located on the same horizontal straight line.

[0024] After the positioning frame 50 is fixed above the sampling well 10, the winding unit 20 releases the hanging rope 401, and the sampling seat 301 moves downward due to its own gravity, so that the sampling seat 301 drives the hanging rope 401 to move; during the movement of the hanging rope 401, the two guide wheels 403 enable the hanging rope 401 to always remain in a vertical state, thereby keeping the center of gravity of the sampling seat 301 at the center position, thereby improving the stability of the sampling seat 301 during the movement.

[0025] In some embodiments, see Figure 3 and Figure 6 The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines also includes a first collecting tank 60 fixed on the upper surface of the horizontal plate 501, and the winding unit 20 also includes a second winding roller 202 that rotates around its own central axis.

[0026] The sampling part includes a first sampling tube 302 and a probe 303. One end of the first sampling tube 302 passes through the sampling seat 301 and the two are fixed. The other end of the first sampling tube 302 is connected to the first collecting tank 60, and the first sampling tube 302 is wound on the second winding roller 202. A water pump is installed on the first sampling tube 302. The probe 303 is fixed at one end of the first sampling tube 302 that passes through the sampling seat 301. The probe 303 is used to identify water, and the probe 303 is communicatively connected with the water pump.

[0027] When the water level of the old kiln water rises to contact the probe 303 , the water pump starts to extract a certain amount of old kiln water through the first sampling pipe 302 and transport it to the first collection tank 60 .

[0028] It should be noted that the first sampling tube 302 and the sampling seat 301 are detachably connected and fixed, and the length of the first sampling tube 302 passing through the sampling seat 301 can be determined according to the preset old kiln water level.

[0029] During the lowering process of the sampling seat 301, the second winding roller 202 simultaneously releases the first sampling tube 302, thereby placing the first sampling tube 302 into the goaf 100. When the old kiln water contacts the probe 303, the water pump starts to take samples; when the old kiln water level reaches the preset water level, sampling is automatically performed to reduce manual participation.

[0030] In some embodiments, see Figure 3 and Figure 6 The winding unit 20 also includes a third winding roller 203 rotating around its own central axis. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines also includes a self-collecting unit 70. The self-collecting unit 70 includes a second collecting tank 701 and a second sampling tube 702. One end of the second sampling tube 702 is connected to the second collecting tank 701, and the other end of the second sampling tube 702 passes through the sampling seat 301 and is wound around the third winding roller 203. A pressure pump is provided on the second sampling tube 702.

[0031] During the lowering process of the sampling seat 301, the third winding roller 203 simultaneously releases the second sampling tube 702. When the pressure pump is started, the old kiln water can be sampled through the second sampling tube 702; the first sampling tube 302 needs to monitor the water level. When the water level reaches the preset water level, the first sampling tube 302 automatically samples. If sampling is required in advance or sampling is required at any time, the pressure pump can be started to sample through the second sampling tube 702, thereby realizing two sampling methods.

[0032] In some embodiments, see Figure 2 , Figure 3 and Figure 6 The positioning frame 50 also includes two bases 503 fixed on the horizontal plate 501 . The two bases 503 are arranged opposite to each other, and the first winding roller 201 , the second winding roller 202 and the third winding roller 203 are all rotatably connected between the two bases 503 .

[0033] The winding unit 20 also includes a driving portion for driving the first winding roller 201, the second winding roller 202 and the third winding roller 203 to rotate synchronously, a fourth winding roller 207 that rotates around its own central axis, and a second motor 204 for driving the fourth winding roller 207 to rotate. The fourth winding roller 207 is rotatably connected to the sampling seat 301, and the sampling seat 301 is penetrated by a through hole 3012 for the second sampling tube 702 to pass through.

[0034] Specifically, a counterweight is fixedly provided at the end of the second sampling tube 702 extending into the goaf 100 .

[0035] Two vertical plates are fixed on the surface of the sampling seat 301, and the two vertical plates are arranged opposite to each other. The fourth winding roller 207 is rotatably connected between the two vertical plates. The fourth motor 206 is installed on one of the vertical plates. The output shaft of the fourth motor 206 passes through the vertical plates and is fixed to the fourth winding roller 207.

[0036] The first winding roller 201 , the second winding roller 202 and the third winding roller 203 are rotated simultaneously by the driving unit, so that the first sampling tube 302 , the hanging rope 401 and the second sampling tube 702 are released simultaneously when the sampling seat 301 is lowered.

[0037] The fourth motor 206 is started so that the fourth winding roller 207 releases the second sampling tube 702, thereby inserting the second sampling tube 702 into the old kiln water. By adding a counterweight block, the second sampling tube 702 is kept vertical after being inserted into the old kiln water. The depth of the second sampling tube 702 inserted into the old kiln water is controlled by controlling the number of rotations of the fourth motor 206, so that any water level of the old kiln water can be sampled through the second sampling tube 702.

[0038] In some embodiments, see Figure 3 The driving part includes three transmission gears 205 and a third motor 206. The three transmission gears 205 are respectively fixed on the outer periphery of the first winding roller 201, the second winding roller 202 and the third winding roller 203. The transmission gears 205 on both sides are meshed with the transmission gear 205 in the middle. The third motor 206 is used to drive the first winding roller 201 or the second winding roller 202 or the third winding roller 203 to rotate.

[0039] The third motor 206 is started to drive the first winding roller 201, the second winding roller 202 or the third winding roller 203 to rotate, so that the first winding roller 201, the second winding roller 202 and the third winding roller 203 rotate simultaneously through the transmission gear 205, thereby causing the second sampling tube 702, the hanging rope 401 and the second sampling tube 702 to be released or wound up at the same time.

[0040] In some embodiments, see Figure 3 , Figure 6 and Figure 8 The positioning frame 50 also includes two positioning seats 502 respectively fixed on both sides of the horizontal plate 501, a cavity 5021 is opened in the positioning seat 502, and a sliding cavity 5022 connecting the outside with the cavity 5021 is opened on the bottom wall of the positioning seat 502. The dynamic monitoring sampling device for water investigation in old kilns in closed coal mines also includes a fastening unit 80, which is arranged in the cavity 5021. The fastening unit 80 has a fastening rod 801 for inserting into the ground, and an extension portion for extending the fastening rod 801 from the sliding cavity 5022 and inserting it into the ground.

[0041] Specifically, two fastening rods 801 are provided, and the two fastening rods 801 are relatively arranged on both sides of the cavity 5021. A spiral groove 8011 is spirally opened on the outer periphery of the fastening rod 801, and a rotating block 5023 that is slidably adapted to the spiral groove 8011 is fixed on the inner wall of the sliding cavity 5022. The extending part includes a connecting plate 802 and a telescopic cylinder 803 fixed between the two fastening rods 801, and the piston rod end of the telescopic cylinder 803 is fixed to the connecting plate 802.

[0042] The telescopic cylinder 803 is started to insert the two fastening rods 801 in the same cavity 5021 into the ground through the connecting plate 802. During the process of inserting the fastening rod 801 into the ground, the fastening rod 801 is rotated by the rotating block 5023 and the spiral groove 8011, thereby screwing the fastening rod 801 into the ground, reducing the difficulty of inserting the fastening rod 801 into the ground.

[0043] In some embodiments, see Figure 4 and Figure 5 The guide part also includes a first motor 404 corresponding to the guide wheel 403 one by one. The first motor 404 is installed on the guide cylinder 402, and the first motor 404 is used to drive the guide wheel 403 to rotate.

[0044] The first motor 404 is started to drive the guide wheel 403 to rotate. The rotation of the guide wheel 403 will assist the hanging rope 401 downward, so that the hanging rope 401 will not get stuck, and the smoothness of the lowering of the hanging rope 401 is improved.

[0045] In some embodiments, see Fig. 9 and Fig.10 The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines also includes a stabilizing unit 90, which is arranged in a sampling seat 301. The stabilizing unit 90 has an insertion rod 901 inserted into the inner wall of the sampling well 10, and has multiple limiting rods 902 extending from the insertion rod 901, a first power for extending the insertion rod 901 from the sampling seat 301, and a second power for extending the limiting rod 902 from the insertion rod 901.

[0046] Specifically, a plurality of insertion rods 901 are arranged around the central axis of the sampling seat 301 , and the first power corresponds to the insertion rods 901 one by one. The first power is the electric cylinder 903 , and the piston rod end of the electric cylinder 903 is fixed to the insertion rod 901 .

[0047] A cavity 9013 and a through groove 9011 connected to the outside and the cavity 9013 are provided in the insertion rod 901. The limiting rod 902 corresponds to the through groove 9011 one by one and the two are slidably adapted. Multiple limiting rods 902 are provided around the central axis of the insertion rod 901. A circle of limiting rods 902 is set as a limiting group. Multiple limiting groups are provided along the length direction of the insertion rod 901. One end of the limiting rod 902 in the cavity 9013 is threadedly connected to a threaded sleeve 906, and the threaded sleeve 906 is rotatably connected to the inner wall of the cavity 9013.

[0048] A guide block 9012 is fixedly disposed on the inner wall of the through slot 9011 , and a guide slot 9021 slidably matched with the guide block 9012 is formed on the outer wall of the limiting rod 902 .

[0049] The second power is arranged in the cavity 9013, and the second power includes a fourth motor 904 fixed to the inner wall of the cavity 9013 and a transmission roller 905 fixed to the output shaft of the fourth motor 904, and the outer periphery of the transmission roller 905 is fixed with a driving bevel gear 9051 corresponding to the limit group one by one, and the outer periphery of the threaded sleeve 906 is fixed with a driven bevel gear 9061 meshing with the driving bevel gear 9051.

[0050] After placing the sampling seat 301 into the bottom of the sampling well 10, start the electric cylinder 903 to insert the insertion rod 901 into the inner wall of the sampling well 10, and then start the fourth motor 904 to drive the transmission roller 905 to rotate. The transmission roller 905 drives the threaded sleeve 906 to rotate through the active bevel gear 9051 and the driven bevel gear 9061, so that the threaded sleeve 906 also inserts the limiting rod 902 into the inner wall of the sampling well 10.

[0051] When the limiting rod 902 slides in the through slot 9011 , the guide block 9012 slides in the guide slot 9021 , so that the limiting rod 902 slides along its own length direction, thereby guiding and limiting the limiting rod 902 .

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines, used in sampling wells, characterized in that: include: A winding unit, disposed above the sampling well, having a first winding roller that rotates around its own central axis; The monitoring sampling unit has a sampling seat for lowering into the sampling well, and a sampling part fixed on the sampling seat; the outer wall of the sampling seat is equipped with a plurality of rollers for abutting against the inner wall of the sampling well, and when the sampling seat enters the sampling well, the sampling seat is coaxial with the sampling well; The lowering unit comprises a suspension rope fixed between the first winding roller and the sampling seat, and a guide portion; during the lowering process of the sampling seat, the guide portion makes the suspension rope coaxial with the sampling well.

2. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines according to claim 1 is characterized in that: It also includes a positioning frame erected above the sampling well, the positioning frame having a transverse plate for fixing the winding unit; The guide portion comprises: A guide cylinder is fixedly mounted on the lower surface of the horizontal plate, the guide cylinder is coaxial with the sampling well, and the suspension rope passes through the central axis of the guide cylinder; Two guide wheels are arranged oppositely on both sides of the suspension rope, the two guide wheels are located on the same horizontal straight line or the two guide wheels are distributed up and down, and the guide wheels are rotatably connected with the guide cylinder around their own central axis.

3. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines as claimed in claim 2 is characterized in that: It also includes a first collecting tank fixedly arranged on the upper surface of the horizontal plate; The winding unit further comprises a second winding roller which rotates around its own central axis; The sampling part includes a first sampling tube and a probe, one end of the first sampling tube passes through the sampling seat and the two are fixed, the other end of the first sampling tube is connected to the first collecting tank, and the first sampling tube is wound around the second winding roller, a water pump is installed on the first sampling tube, the probe is fixed to one end of the first sampling tube passing through the sampling seat, the probe is used to identify water, and the probe is in communication connection with the water pump; When the water level of the old kiln water rises to contact the probe, the water pump starts to extract a certain amount of old kiln water through the first sampling tube and transports it to the first collection tank.

4. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines as claimed in claim 3 is characterized in that: The winding unit further comprises a third winding roller rotating around its own central axis; The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines also includes a self-collecting unit, which includes: Second collection tank; One end of the second sampling tube is connected to the second collecting tank, and the other end passes through the sampling seat and is wound around the third winding roller. A pressure pump is provided on the second sampling tube.

5. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines as claimed in claim 4 is characterized in that: The positioning frame also includes two bases fixedly mounted on the surface of the transverse plate, the two bases are arranged opposite to each other, and the first winding roller, the second winding roller and the third winding roller are all rotatably connected between the two bases; The winding unit also includes a driving part for driving the first winding roller, the second winding roller and the third winding roller to rotate synchronously, a fourth winding roller rotating around its own central axis, and a second motor for driving the fourth winding roller to rotate, the fourth winding roller is rotatably connected to the sampling seat, and the sampling seat is penetrated by a through hole for the second sampling tube to pass through.

6. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines as claimed in claim 5, characterized in that: The driving part includes three transmission gears and a third motor. The three transmission gears are respectively fixed on the outer periphery of the first winding roller, the second winding roller and the third winding roller. The transmission gears on both sides are meshed with the transmission gear in the middle. The third motor is used to drive the first winding roller, the second winding roller or the third winding roller to rotate.

7. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines as claimed in claim 5, characterized in that: The positioning frame further comprises two positioning seats respectively fixedly arranged on both sides of the horizontal plate, wherein a cavity is formed in the positioning seat, and a sliding cavity is formed on the bottom wall of the positioning seat to connect the outside with the cavity; The dynamic monitoring sampling device for water investigation in old kilns of closed coal mines also includes a fastening unit, which is arranged in the cavity. The fastening unit has a fastening rod for inserting into the ground, and an extension part for extending the fastening rod from the sliding cavity and inserting it into the ground.

8. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines as claimed in claim 2, characterized in that: The guide part also includes a first motor corresponding to the guide wheel one by one, the first motor is installed on the guide cylinder, and the first motor is used to drive the guide wheel to rotate.

9. The dynamic monitoring sampling device for water investigation and repair of old kilns in closed coal mines as claimed in claim 1, characterized in that: It also includes a stabilizing unit, which is arranged in the sampling seat. The stabilizing unit has an insertion rod inserted into the inner wall of the sampling well, a plurality of limiting rods extending from the insertion rod, a first power for extending the insertion rod from the sampling seat, and a second power for extending the limiting rod from the insertion rod.

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