A multi-layer groundwater undisturbed water quality monitoring device

Abstract

The present invention provides a multi-layer groundwater undisturbed water quality monitoring device, which relates to the technical field of water quality monitoring, and includes a mobile base and a mounting tube; a winch is installed above the mobile base, a winding rope is wound inside the winch, a hook is fixedly provided at the tail end of the winding rope, a stabilizing tube is fixedly provided at the bottom of the mounting tube, a monitoring tube is fixedly provided at the bottom of the stabilizing tube, and a stabilizing mechanism is installed inside the stabilizing tube. This solution ultimately enables the magnetic cone column and the conical column to descend together, and in the process of descent, it can drive the threaded nails and the screw to extend outward synchronously, and the screw is first stabilized with the wall of the monitoring well, and the subsequent threaded nails can be well penetrated into the inner wall of the monitoring well for secondary stabilization, which can perform multi-layer detection without disturbance, ensuring the accuracy of monitoring, and the sealing door moves with the movement of the upper stabilizing mechanism to prevent water of different depths from affecting the sensor.

Description

Technical Field

[0001] The invention relates to the technical field of water quality monitoring, and in particular to a multi-layer groundwater undisturbed water quality monitoring device. Background Art

[0002] Groundwater monitoring wells are devices used to observe groundwater levels or monitor groundwater extraction, water quality and water temperature. Although they are called wells, they are generally not as large in diameter as traditional water wells. Most of them have a diameter of about 30 centimeters. The traditional use of groundwater monitoring wells is to take samples and then bring the samples back to the laboratory for testing. The advantage of this is that the test results are accurate and more test items can be included. Another use is to place sensors for water quality testing in the monitoring well.

[0003] Especially in plateau areas such as Inner Mongolia, groundwater monitoring wells need to be set up. If monitoring is needed, the monitoring wells will be opened and sensors will be placed underground to monitor water quality. This will help to judge the water body under the current environment.

[0004] In the related technology, traditional groundwater monitoring uses a winch to lower the monitoring sensor to the depth that needs to be detected and then conduct monitoring. Since the water environment under the monitoring well is unclear, it is easily affected by external factors and may cause shaking during monitoring, which will affect the monitoring accuracy of the sensor. Secondly, when the sensor needs to monitor deeper water bodies, the water will contact the sensor during the process of descending to the depth, which will also affect the monitoring accuracy.

[0005] Therefore, it is necessary to provide a multi-layer groundwater undisturbed water quality monitoring device to solve the above technical problems. Summary of the invention

[0006] The present invention provides a multi-layer groundwater undisturbed water quality monitoring device, which solves the technical problems in the related art that the sensor is easily disturbed by the outside world during underwater monitoring, and secondly, when monitoring deeper water bodies, the water body above is likely to affect the accuracy of the sensor.

[0007] In order to solve the above technical problems, the present invention provides a multi-layer groundwater undisturbed water quality monitoring device, comprising a mobile base and a mounting pipe;

[0008] A winch is installed above the mobile base, a winding rope is wound inside the winch, a hook is fixedly provided at the tail end of the winding rope, a stabilizing tube is fixedly provided at the bottom of the installation tube, a monitoring tube is fixedly provided at the bottom of the stabilizing tube, a stabilizing mechanism is installed inside the stabilizing tube, and a monitoring mechanism is installed inside the monitoring tube;

[0009] The stabilizing mechanism comprises a submersible electric cylinder installed inside a mounting tube, a vertically liftable magnetic cone column is installed inside the stabilizing tube and at the output end of the submersible electric cylinder, an avoidance groove is provided inside the magnetic cone column, both side outer walls of the stabilizing tube are rotatably connected with a first gear, both side outer walls of the stabilizing tube are rotatably connected with a second gear located below the first gear, a threaded nail is threadedly connected at the axis of the first gear, a magnetic wheel is fixedly provided at one end of the threaded nail close to the inside of the stabilizing tube, a screw is threadedly connected at the axis of the second gear, and a first limit plate and a second limit plate are fixedly provided on the inner wall of the stabilizing tube respectively;

[0010] The monitoring mechanism comprises two sliding rods, a conical column is fixedly provided at the bottom end of the magnetic cone column, a sealing ring is fixedly provided on the inner wall of the monitoring tube, a through hole is provided inside the monitoring tube and below the sealing ring, guide wheels are fixedly provided at one end of the two sliding rods close to the conical column, sealing doors are fixedly provided inside the through holes and at the outer ends of the two sliding rods, two limit rings are fixedly provided on the inner top of the through holes, and reset springs are sleeved on the outer walls of the two sliding rods;

[0011] A bottom plate is installed at the bottom of the monitoring tube by bolts, and a sensor is installed inside the monitoring tube and above the bottom plate.

[0012] Preferably, the magnetic cone column and the inner bottom of the mounting tube are slidably connected at the axis center, and the inner width of the avoidance groove is larger than the outer diameter of the screw.

[0013] Preferably, the magnetic wheel continuously fits against the outer wall of the magnetic cone column, and the width of the magnetic wheel is greater than the inner width of the avoidance groove.

[0014] Preferably, the first gear and the second gear are meshed with each other, the threaded nail and the screw rod pass through the interior of the stabilizing tube and do not contact the inside of the stabilizing tube, the threaded nail and the first limiting plate are slidably connected, and the screw rod and the second limiting plate are slidably connected.

[0015] Preferably, the two limiting rings and the two sliding rods are slidably connected, and both ends of the return spring are in contact with the outer wall of the guide wheel and the outer wall of the limiting ring.

[0016] Preferably, a folding bag is installed at the inner top of the monitoring tube, a connecting pipe is sealedly installed on the outer wall of the folding bag, a sealing ring is embedded in the inner part of the through hole and located on the outer wall of the two sealing doors, and an arc-shaped pipe is installed in communication between the two sealing rings;

[0017] A submersible air pump is installed inside the installation pipe and above the submersible electric cylinder. An air inlet pipe is sealedly installed on the outer wall of the submersible air pump, and a one-way valve is installed inside the bottom plate.

[0018] Preferably, the bottom end of the connecting pipe is sealed with one of the sealing rings on the right side, the arc tube is located inside the monitoring tube, and the air outlet end of the air inlet pipe extends to the inside of the monitoring tube.

[0019] Preferably, it also includes a sampling mechanism;

[0020] The sampling mechanism includes a positioning plate fixedly arranged at the outer end of the screw rod, a mounting frame is installed inside the positioning plate, a third gear and a fourth gear are rotatably connected to the outer wall of the positioning plate and located inside the mounting frame, a stud is threadedly connected to the axis of the third gear, a limit spring is fixedly arranged inside the positioning plate, a clamping plate is fixedly arranged inside the positioning plate and located below the limit spring, a sleeve is fixedly arranged at the axis of the fourth gear, a sampling tube is slidably connected to the inside of the sleeve, and a positioning spring is fixedly arranged inside the sleeve and located on the left side of the sampling tube.

[0021] Preferably, the third gear and the fourth gear are meshed with each other, the clamping plate and the stud are slidably connected, and one end of the positioning spring is fixedly connected to the sampling tube.

[0022] Compared with the related art, the multi-layer groundwater undisturbed water quality monitoring device provided by the present invention has the following beneficial effects:

[0023] Compared with the traditional design, this case adopts a lifting method for monitoring, and when the stabilizing tube and the monitoring tube descend to the position to be detected, the user can control the magnetic cone column and the conical column to descend together, and in the process of descent, the threaded nails and the screw can be driven to extend outward synchronously, and the screw is first stabilized with the wall of the monitoring well, and the subsequent threaded nails can be well penetrated into the inner wall of the monitoring well for secondary stability, which can carry out multi-layer detection without disturbance and ensure the accuracy of monitoring. At the same time, there is a wheel diameter ratio between the first gear and the second gear, so it can adapt to monitoring wells of different diameters. Secondly, the sealing door moves with the movement of the upper stabilizing mechanism, and can isolate the outside water from entering the monitoring mechanism during the descent. Only when it reaches the depth to be measured can it be opened synchronously for monitoring, which can avoid the water of different depths affecting the sensor and further ensure the accuracy of monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1A schematic diagram of the best structure provided by the present invention;

[0026] Figure 2 for Figure 1 The schematic diagram of the structure viewed from above is shown;

[0027] Figure 3 for Figure 1 Schematic diagram of the external structure of the hook, mounting pipe, stabilizing pipe and monitoring pipe shown;

[0028] Figure 4 for Figure 3 The schematic diagram of the cross-sectional structure of the installation pipe, the stabilization pipe and the monitoring pipe shown;

[0029] Figure 5 for Figure 4 The enlarged structural diagram of point A shown;

[0030] Figure 6 for Figure 4 Schematic diagram of the initial working state of the stabilizing mechanism;

[0031] Figure 7 for Figure 6 The schematic diagram of the working state of the threaded nail and the screw rod extending due to the descending of the magnetic cone column is shown;

[0032] Figure 8 for Figure 6 The enlarged structural diagram of point B is shown;

[0033] Fig. 9 for Figure 4 and Figure 7 The plan view of the initial working state of the monitoring mechanism shown;

[0034] Fig.10 for Fig. 9 The cone column shown follows the descent of the magnetic cone column to drive the sealing door to open in a working state;

[0035] Fig.11 for Fig. 9 The enlarged structural diagram of position C is shown;

[0036] Fig.12 for Fig.10 The schematic diagram of the connection structure between the sealing ring and the folding bag after the monitoring tube is cut away is shown;

[0037] Fig.13 for Fig.12 A schematic diagram of the detailed connection structure of the folding bag and the sealing ring shown;

[0038] Fig.14 for Figure 4 and Figure 5 The schematic diagram of the sampling mechanism structure shown;

[0039] Fig.15 for Fig.14 The side view structural diagram is shown.

[0040] Description of Figure Numbers:

[0041] 1. Mobile base;

[0042] 2. winch, 3. reeling rope;

[0043] 4. Installation tube, 5. Stabilization tube, 6. Monitoring tube;

[0044] 7. stabilizing mechanism, 71. submersible electric cylinder, 72. magnetic cone column, 73. avoidance groove, 74. first gear, 75. second gear, 76. threaded nail, 77. magnetic wheel, 78. screw, 79. first limit plate, 710. second limit plate;

[0045] 8. monitoring mechanism, 81. conical column, 82. sealing ring, 83. through hole, 84. sliding rod, 85. guide wheel, 86. sealing door, 87. sealing ring, 88. folding bag, 89. connecting pipe, 810. reset spring, 811. limiting ring, 812. arc pipe;

[0046] 9. sampling mechanism, 91. positioning plate, 92. mounting frame, 93. third gear, 94. fourth gear, 95. sleeve, 96. positioning spring, 97. sampling tube, 98. stud, 99. limit spring, 910. clamping plate;

[0047] 10. Air inlet pipe, 11. Hook, 12. Submersible air pump, 13. Bottom plate, 14. Sensor, 15. One-way valve.

[0048] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The invention provides a multi-layer groundwater undisturbed water quality monitoring device.

[0051] First embodiment:

[0052] Please combine Figures 1 to 11 , a multi-layer groundwater undisturbed water quality monitoring device, comprising a mobile base 1 and a mounting pipe 4;

[0053] A winch 2 is installed above the mobile base 1, a winding rope 3 is wound inside the winch 2, a hook 11 is fixedly provided at the tail end of the winding rope 3, a stabilizing tube 5 is fixedly provided at the bottom of the installation tube 4, a monitoring tube 6 is fixedly provided at the bottom of the stabilizing tube 5, a stabilizing mechanism 7 is installed inside the stabilizing tube 5, and a monitoring mechanism 8 is installed inside the monitoring tube 6;

[0054] The stabilizing mechanism 7 comprises a submersible electric cylinder 71 installed inside the mounting tube 4, a vertically liftable magnetic cone column 72 is installed inside the stabilizing tube 5 and at the output end of the submersible electric cylinder 71, an avoidance groove 73 is provided inside the magnetic cone column 72, both sides of the outer wall of the stabilizing tube 5 are rotatably connected with a first gear 74, both sides of the outer wall of the stabilizing tube 5 are rotatably connected with a second gear 75 located below the first gear 74, a threaded nail 76 is threadedly connected at the axis of the first gear 74, a magnetic wheel 77 is fixedly provided at one end of the threaded nail 76 near the inside of the stabilizing tube 5, a screw rod 78 is threadedly connected at the axis of the second gear 75, and a first limit plate 79 and a second limit plate 710 are respectively fixedly provided on the inner wall of the stabilizing tube 5;

[0055] See also Figure 4 and Figure 6 : In the initial state, the threaded nail 76 and the screw rod 78 are in a retracted state, so that the stabilizing mechanism 7 can be smoothly lowered to the position to be monitored.

[0056] See also Figure 7 : When the installation tube 4, the stabilizing tube 5 and the monitoring tube 6 descend to the depth to be monitored, the submersible electric cylinder 71 is started to control the magnetic cone column 72 to descend. During the descent of the magnetic cone column 72, the magnetic wheels 77 on both sides are driven to move away from each other along the inclined surface of the magnetic cone column 72, which can drive the two threaded nails 76 to move away from each other synchronously. When the threaded nail 76 is moving, the spiral on the outer wall of the threaded nail 76 drives the first gear 74 to rotate. During the rotation of the first gear 74, it will engage and control the rotation of the second gear 75. When the second gear 75 rotates, it will control the internal screw 78 to extend away from each other. Finally, the threaded nail 76 and the screw 78 will be stabilized by the force against the inner wall of the monitoring well.

[0057] The monitoring mechanism 8 comprises two slide bars 84, a conical column 81 is fixedly provided at the bottom end of the magnetic cone column 72, a sealing ring 82 is fixedly provided on the inner wall of the monitoring tube 6, a through hole 83 is provided inside the monitoring tube 6 and below the sealing ring 82, a guide wheel 85 is fixedly provided at one end of the two slide bars 84 close to the conical column 81, a sealing door 86 is fixedly provided inside the through hole 83 and at the outer end of the two slide bars 84, two limit rings 811 are fixedly provided at the inner top of the through hole 83, and a return spring 810 is sleeved on the outer wall of the two slide bars 84;

[0058] See also Fig. 9 : During the descent of the monitoring mechanism 8, the two sealing doors 86 are also in a closed state, so that the external water body will not enter the interior of the monitoring mechanism 8 during the descent process, and therefore the sensor 14 on the bottom plate 13 will not contact the water.

[0059] See also Fig.10 : The conical column 81 will descend together with the magnetic conical column 72, and finally the conical column 81 will descend to the position of the sealing ring 82 for closed sealing. The guide wheel 85 will follow the descent of the conical column 81 and drive the two sliding rods 84 along the inclined surface of the conical column 81 so that the two sealing doors 86 are opened synchronously to expose the through hole 83. Then the water at this position will enter the monitoring tube 6 through the through hole 83, and the sensor 14 will monitor the water at this position (the sensor 14 can be one or a combination of pH sensors, dissolved oxygen DO sensors, ammonia nitrogen sensors, turbidity sensors, conductivity sensors, oxidation-reduction potential ORP sensors or temperature sensors).

[0060] A bottom plate 13 is installed at the bottom of the monitoring tube 6 by bolts, and a sensor 14 is installed inside the monitoring tube 6 and above the bottom plate 13 .

[0061] The magnetic cone column 72 is slidably connected to the axis of the inner bottom of the mounting tube 4 , and the inner width of the avoidance groove 73 is larger than the outer diameter of the screw rod 78 .

[0062] Please refer again Figure 6 Due to the setting of the avoidance groove 73, the screw rod 78 can move freely in the avoidance groove 73 during the movement, which can avoid interference.

[0063] The magnetic wheel 77 is continuously in contact with the outer wall of the magnetic cone column 72 , and the width of the magnetic wheel 77 is greater than the inner width of the avoidance groove 73 .

[0064] It is understandable that since the magnetic wheel 77 and the magnetic cone column 72 are attracted to each other by magnetism, the magnetic wheel 77 will always follow the inclined motion of the magnetic cone column 72. Therefore, when the magnetic cone column 72 is resetting, it will drive the magnetic wheel 77 to reset to the initial state.

[0065] The first gear 74 and the second gear 75 are meshed with each other, the threaded nail 76 and the screw rod 78 pass through the interior of the stabilizing tube 5 without contacting the inside of the stabilizing tube 5, the threaded nail 76 and the first limiting plate 79 are slidably connected, and the screw rod 78 and the second limiting plate 710 are slidably connected.

[0066] See also Figure 8: Since the first limiting plate 79 and the second limiting plate 710 limit the threaded nail 76 and the screw rod 78, such a design restricts the threaded nail 76 and the screw rod 78, allowing the threaded nail 76 and the screw rod 78 to move horizontally but not rotate.

[0067] The two limiting rings 811 and the two sliding rods 84 are slidably connected, and both ends of the return spring 810 are in contact with the outer wall of the guide wheel 85 and the outer wall of the limiting ring 811.

[0068] It should be noted that the limiting ring 811 is used to limit the slide bar 84, which can ensure that the slide bar 84 slides more stably and smoothly. Secondly, the setting of the return spring 810 can also ensure that the slide bar 84 can be reset after extension.

[0069] This embodiment: Compared with the traditional design, this case adopts a lifting method for monitoring, and when the stabilizing tube 5 and the monitoring tube 6 are lowered to the position to be detected, the user can control the magnetic cone column 72 and the conical column 81 to descend together, and in the process of descent, the threaded nail 76 and the screw 78 can be driven to extend synchronously outward, and the screw 78 is first stabilized with the wall of the monitoring well, and the subsequent threaded nail 76 can be well penetrated into the inner wall of the monitoring well for secondary stability, which can perform multi-layer detection without disturbance and ensure the accuracy of monitoring. At the same time, there is a wheel diameter ratio between the first gear 74 and the second gear 75, so it can adapt to monitoring wells of different diameters. Secondly, the sealing door 86 moves with the movement of the upper stabilizing mechanism 7. During the descent, it can isolate the outside water from entering the monitoring mechanism 8. Only when it reaches the depth to be measured can it be opened synchronously for monitoring, which can prevent water of different depths from affecting the sensor 14 and further ensure the accuracy of monitoring.

[0070] Second embodiment:

[0071] See also Figure 4 , Fig.10 , Fig.12 and Fig.13 A folding bag 88 is installed on the inner top of the monitoring tube 6, and a connecting pipe 89 is sealed on the outer wall of the folding bag 88. A sealing ring 87 is embedded in the inner part of the through hole 83 and located on the outer wall of the two sealing doors 86, and an arc tube 812 is installed between the two sealing rings 87;

[0072] A submersible air pump 12 is installed inside the installation pipe 4 and above the submersible electric cylinder 71 . An air inlet pipe 10 is sealedly installed on the outer wall of the submersible air pump 12 . A one-way valve 15 is installed inside the bottom plate 13 .

[0073] The bottom end of the connecting pipe 89 is sealed with one of the sealing rings 87 on the right side. The arc tube 812 is located inside the monitoring tube 6 , and the outlet end of the air inlet pipe 10 extends to the inside of the monitoring tube 6 .

[0074] See also Fig.10 : When the monitoring is completed, it is necessary to reset. When resetting, the conical column 81 can be directly controlled to rise. When it rises to the initial state, the user can continue to control the conical column 81 to rise until the conical column 81 rises to the point where it can squeeze the folding capsule 88. At this time, the internal gas of the folding capsule 88 is squeezed into the connecting tube 89.

[0075] See also Fig.12 and Fig.13 : When the gas passes through the connecting pipe 89 into the arc tube 812, the sealing ring 87 expands, and the expanded sealing ring 87 seals the sealing door 86 and the through hole 83.

[0076] See also Figure 4 After the sealing is completed, the user starts the submersible air pump 12 to inflate the inside of the monitoring tube 6 through the air inlet pipe 10. When the air pressure in the monitoring tube 6 is too high, the residual water in the monitoring tube 6 is discharged through the one-way valve 15 due to the influence of the internal and external pressures. Since there is a gap between the outer wall of the conical column 81 and the inner wall of the monitoring tube 6, the smooth passage of gas can be guaranteed.

[0077] In this embodiment: When the monitoring is completed, during the resetting process, the user can squeeze the folding bag 88 so that the two sealing rings 87 can tightly seal the closed sealing door 86 and the through hole 83. This can ensure that the sensor 14 inside the monitoring tube 6 is more stable, and can also ensure that the monitoring data is safer during transportation. At the same time, due to the friction between the sealing door 86 and the through hole 83 due to long-term use, a gap will be generated, and the expansion of the sealing ring 87 can also eliminate the tolerance gap.

[0078] Third embodiment:

[0079] See also Figure 4 , Figure 5 , Fig.14 and Fig.15 , further comprising a sampling mechanism 9;

[0080] The sampling mechanism 9 includes a positioning plate 91 fixed to the outer end of the screw rod 78, a mounting frame 92 is installed inside the positioning plate 91, a third gear 93 and a fourth gear 94 are rotatably connected to the outer wall of the positioning plate 91 and located inside the mounting frame 92, a stud 98 is threadedly connected to the axis of the third gear 93, a limit spring 99 is fixed inside the positioning plate 91, a clamping plate 910 is fixed inside the positioning plate 91 and located below the limit spring 99, a sleeve 95 is fixed at the axis of the fourth gear 94, a sampling tube 97 is slidably connected inside the sleeve 95, and a positioning spring 96 is fixed inside the sleeve 95 and located on the left side of the sampling tube 97.

[0081] See also Figure 4 and Figure 5 Since the sampling mechanism 9 is installed on the stabilizing mechanism 7, when the first embodiment is in operation, the sampling mechanism 9 will also move along with the movement of the stabilizing mechanism 7.

[0082] See also Fig.15 and Fig.15 : When the positioning plate 91 moves with the screw 78, the sampling tube 97 in the mounting frame 92 will first contact the inner wall of the monitoring well. Then, when the stud 98 contacts the inner wall of the well, the stud 98 will move to drive the outer spiral edge to control the rotation of the third gear 93. When the third gear 93 rotates, it will engage and control the rotation of the fourth gear 94. When the fourth gear 94 rotates, it will drive the internal sleeve 95 to control the rotation of the sampling tube 97. The rotation of the sampling tube 97 can collect the sand and mud on the inner wall of the well into the interior of the sampling tube 97. Finally, the stud 98 and the sampling tube 97 will be flush with the positioning plate 91.

[0083] The third gear 93 and the fourth gear 94 are meshed with each other, the clamping plate 910 and the stud 98 are slidably connected, and one end of the positioning spring 96 is fixedly connected to the sampling tube 97 .

[0084] Understandable: From Fig.14 It can be seen that the stud 98 and the mounting frame 92 do not contact each other, so that the rotation of the stud 98 does not affect the mounting frame 92;

[0085] The clamping plate 910 limits the position of the stud 98 to ensure that the stud 98 can only move.

[0086] This embodiment: Compared with the traditional design, this case is designed with a sampling mechanism 9, and the sampling mechanism 9 is realized in linkage when the stabilizing mechanism 7 is working. The sampling tube 97 can be rotated by moving the stud 98, and a wheel diameter ratio is set between the third gear 93 and the fourth gear 94, which can accelerate the rotation of the sampling tube 97. Therefore, this design realizes that the stabilizing mechanism 7 can automatically collect samples from the inner wall of the monitoring well during the stabilization process. Therefore, this design ensures the diversification of water quality monitoring.

[0087] Please refer to Figures 1 to 15 The working principle of a multi-layer groundwater undisturbed water quality monitoring device provided by the present invention is as follows:

[0088] Step S1: Before monitoring, the user needs to push the mobile base 1 to the wellhead of the monitoring well, and then start the winch 2 to work. The winch 2 releases the winding rope 3 by rotation to lower the installation pipe 4 to the bottom of the monitoring well;

[0089] When the installation tube 4, the stabilizing tube 5 and the monitoring tube 6 are lowered to the depth to be monitored, the submersible electric cylinder 71 is started to control the magnetic cone column 72 to descend. During the descending process of the magnetic cone column 72, the magnetic wheels 77 on both sides are driven to move away from each other along the inclined surface of the magnetic cone column 72, which can drive the two threaded nails 76 to move away from each other synchronously. When the threaded nail 76 is moving, the spiral on the outer wall of the threaded nail 76 will use the moving force to drive the first gear 74 to rotate. During the rotation of the first gear 74, it will mesh and control the rotation of the second gear 75. When the second gear 75 rotates, it will control the internal screw 78 to move away from each other and extend. Finally, the threaded nail 76 and the screw 78 will be stabilized by the force against the inner wall of the monitoring well.

[0090] The conical column 81 will descend along with the magnetic conical column 72, and finally the conical column 81 will descend to the position of the sealing ring 82 for closed sealing. The guide wheel 85 will follow the descent of the conical column 81 and drive the two sliding rods 84 along the inclined surface of the conical column 81 so that the two sealing doors 86 will open synchronously to expose the through hole 83. Then the water at this position will enter the monitoring tube 6 through the through hole 83, and the sensor 14 will monitor the water at this position.

[0091] Step S2: Continue to control the conical column 81 to rise until the conical column 81 rises to the point where it can squeeze the folding bag 88. At this time, the internal gas of the folding bag 88 is squeezed into the connecting tube 89. The connecting tube 89 enters the arc tube 812 through the gas, and the sealing ring 87 expands. The expanded sealing ring 87 will seal the sealing door 86 and the through hole 83.

[0092] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A multi-layer groundwater undisturbed water quality monitoring device, characterized in that: Includes mobile base and mounting tube; A winch is installed above the mobile base, a winding rope is wound inside the winch, a hook is fixedly provided at the tail end of the winding rope, a stabilizing tube is fixedly provided at the bottom of the installation tube, a monitoring tube is fixedly provided at the bottom of the stabilizing tube, a stabilizing mechanism is installed inside the stabilizing tube, and a monitoring mechanism is installed inside the monitoring tube; The stabilizing mechanism comprises a submersible electric cylinder installed inside a mounting tube, a vertically liftable magnetic cone column is installed inside the stabilizing tube and at the output end of the submersible electric cylinder, an avoidance groove is provided inside the magnetic cone column, both side outer walls of the stabilizing tube are rotatably connected with a first gear, both side outer walls of the stabilizing tube are rotatably connected with a second gear located below the first gear, a threaded nail is threadedly connected at the axis of the first gear, a magnetic wheel is fixedly provided at one end of the threaded nail close to the inside of the stabilizing tube, a screw is threadedly connected at the axis of the second gear, and a first limit plate and a second limit plate are fixedly provided on the inner wall of the stabilizing tube respectively; The monitoring mechanism comprises two sliding rods, a conical column is fixedly provided at the bottom end of the magnetic cone column, a sealing ring is fixedly provided on the inner wall of the monitoring tube, a through hole is provided inside the monitoring tube and below the sealing ring, guide wheels are fixedly provided at one end of the two sliding rods close to the conical column, sealing doors are fixedly provided inside the through holes and at the outer ends of the two sliding rods, two limit rings are fixedly provided on the inner top of the through holes, and reset springs are sleeved on the outer walls of the two sliding rods; A bottom plate is installed at the bottom of the monitoring tube by bolts, and a sensor is installed inside the monitoring tube and above the bottom plate; The magnetic cone column and the inner bottom of the mounting tube are slidably connected at the axis center, and the inner width of the avoidance groove is larger than the outer diameter of the screw; The magnetic wheel is continuously fitted with the outer wall of the magnetic cone column, and the width of the magnetic wheel is greater than the inner width of the avoidance groove.

2. A multi-layer groundwater undisturbed water quality monitoring device according to claim 1, characterized in that: The first gear and the second gear are meshed with each other, the threaded nail and the screw rod penetrate the interior of the stabilizing tube and do not contact the inside of the stabilizing tube, the threaded nail and the first limiting plate are slidably connected, and the screw rod and the second limiting plate are slidably connected.

3. A multi-layer groundwater undisturbed water quality monitoring device according to claim 1, characterized in that: The two limiting rings and the two sliding rods are slidably connected, and both ends of the return spring are in contact with the outer wall of the guide wheel and the outer wall of the limiting ring.

4. A multi-layer groundwater undisturbed water quality monitoring device according to claim 1, characterized in that: A folding bag is installed on the inner top of the monitoring tube, a connecting pipe is sealed on the outer wall of the folding bag, a sealing ring is embedded in the inner part of the through hole and in the outer wall of the two sealing doors, and an arc-shaped pipe is installed between the two sealing rings; A submersible air pump is installed inside the installation pipe and above the submersible electric cylinder. An air inlet pipe is sealedly installed on the outer wall of the submersible air pump, and a one-way valve is installed inside the bottom plate.

5. A multi-layer groundwater undisturbed water quality monitoring device according to claim 4, characterized in that: The bottom end of the connecting pipe is sealed with one of the sealing rings on the right side, the arc tube is located inside the monitoring tube, and the air outlet end of the air inlet pipe extends to the inside of the monitoring tube.

6. A multi-layer groundwater undisturbed water quality monitoring device according to claim 1, characterized in that: It also includes sampling agencies; The sampling mechanism includes a positioning plate fixedly arranged at the outer end of the screw rod, a mounting frame is installed inside the positioning plate, a third gear and a fourth gear are rotatably connected to the outer wall of the positioning plate and located inside the mounting frame, a stud is threadedly connected to the axis of the third gear, a limit spring is fixedly arranged inside the positioning plate, a clamping plate is fixedly arranged inside the positioning plate and located below the limit spring, a sleeve is fixedly arranged at the axis of the fourth gear, a sampling tube is slidably connected to the inside of the sleeve, and a positioning spring is fixedly arranged inside the sleeve and located on the left side of the sampling tube.

7. A multi-layer groundwater undisturbed water quality monitoring device according to claim 6, characterized in that: The third gear and the fourth gear are meshed with each other, the clamping plate and the stud are in sliding connection, and one end of the positioning spring is fixedly connected to the sampling tube.

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