Sampling device and method for monitoring underground water pollution in mining area

Abstract

The invention relates to a sampling device and method for monitoring underground water pollution in a mining area, and the sampling device comprises a sealed housing, and a release mechanism, a sample moving mechanism and a material receiving mechanism which are arranged in the sealed housing; a plurality of sample tubes are arranged on the placement surface of the release mechanism, and liquid inlets are formed in the sample tubes; the sample tube can slide out from the lower side of the placement surface under the action of gravity; the sample moving mechanism is configured to receive the sample tube sliding out of the placing surface and move the sample tube out of the sealing shell to collect a water sample; the material collecting mechanism is provided with a material collecting surface, and the sample moving mechanism can move the sample tube after collecting the water body sample into the material collecting surface from the higher side of the material collecting surface under the action of gravity; and the inclination direction of the discharging side of the placing surface is opposite to the inclination direction of the receiving side of the receiving surface. According to the invention, automatic sampling is realized, the use of liquid pipelines is reduced, single sampling is carried out on a single sample tube, and cross contamination between samples easily caused by multiple sampling is avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of groundwater monitoring in mining areas, and specifically relates to a sampling device and method for monitoring groundwater pollution in mining areas. Background Art

[0002] Metal mining will pollute groundwater during mining, so it is necessary to monitor the groundwater in the mining area. Layered sampling is a common sampling method, which samples groundwater at different depths and then analyzes and tests water samples at different depths to obtain the pollution status of groundwater in the mining area.

[0003] Common stratified sampling methods in the prior art include the following two sampling methods: the first sampling method is to set a valve on the sampling container, lower the sampling container to a specified depth position in the water body through a rope, and use the opening and closing of the valve to achieve water sampling, but only one depth position can be obtained each time, and continuous sampling cannot be achieved. The operation is complicated and the sampling efficiency is low. The second sampling method is to directly use a water pump to extract water samples at different depths to achieve multiple sampling, but the accuracy of the sampling depth position is poor, it is difficult to obtain water samples at an accurate depth position, and the pipeline system connected to the water pump will retain the liquid extracted in the previous sampling operation during multiple sampling operations. These residual liquids will mix with the new samples extracted later. However, the composition of groundwater in mining areas is complex, and the pollution degree and composition of water bodies in different areas and depths are different. Once mixing occurs, it will cause mutual contamination between water samples, which seriously interferes with the judgment of the actual pollution status of groundwater. This sample pollution situation makes the subsequent detection data lose accuracy and cannot provide a reliable basis for groundwater pollution control in mining areas. Summary of the invention

[0004] In view of the above analysis, an embodiment of the present invention aims to provide a sampling device for monitoring groundwater pollution in mining areas, so as to solve at least one of the above problems existing in the prior art.

[0005] The object of the present invention is achieved in that:

[0006] In one aspect, a sampling device for monitoring groundwater pollution in a mining area is provided, comprising:

[0007] Sealed housing;

[0008] The release mechanism is arranged in the sealed housing, and a plurality of sample tubes are arranged on the placement surface of the release mechanism, and a liquid inlet is arranged on the sample tube, and the opening and closing of the liquid inlet is controlled by a liquid inlet valve; the placement surface and the horizontal plane have an angle, and the angle is an acute angle, and the sample tube can slide out from the lower side of the placement surface by gravity;

[0009] A sample moving mechanism is disposed in the sealed housing and is configured to receive a sample tube that slides out of the placement surface and move the sample tube outside the sealed housing to collect a water sample;

[0010] The material receiving mechanism is arranged in the sealed housing and is located below the release mechanism. The material receiving mechanism is provided with a material receiving surface. The material receiving surface and the horizontal plane have an included angle, which is an acute angle. The sample moving mechanism can move the sample tube after collecting the water sample from the side with a higher material receiving surface to the material receiving surface through gravity.

[0011] The inclination direction of the side of the placement surface for discharging materials is opposite to the inclination direction of the side of the receiving surface for receiving materials.

[0012] Further, the release mechanism includes:

[0013] A release disk, wherein the disk surface of the release disk includes a placement surface, a plurality of sample tubes are arranged in a ring on the placement surface of the release disk, and two ends of the sample tubes are arranged in the radial direction of the release disk;

[0014] a release motor, drivingly connected to the center of the release disc and configured to drive the release motor to rotate;

[0015] A clamping mechanism, disposed on the release disk, configured to fix the sample tube and release the sample tube when the sample tube is in a release position;

[0016] The directional rails are arranged on the release disc and are respectively located on both sides of the sample tube. The sample tube is slidably connected to the directional rails.

[0017] Furthermore, the clamping mechanism includes a clamping motor and a clamping piece. The clamping motor is connected to the other disk surface opposite to the placement surface of the release disk. The clamping piece passes through the release disk and is connected to the clamping motor drive. The clamping piece has an extension portion. When the clamping motor drives the clamping piece to retract, the extension portion can abut against the sample tube.

[0018] Furthermore, the material receiving mechanism includes a material receiving disc, a material receiving motor and a material receiving frame. The disc surface of the material receiving disc includes a material receiving surface. The material receiving motor is driven and connected to the center of the material receiving disc. The material receiving frame includes multiple material receiving frames. The multiple material receiving frames are arranged in a ring around the material receiving surface, and the two ends of the material receiving frames are arranged in the radial direction of the material receiving surface. An inlet is provided at the outward end of the material receiving frame. The material receiving frame is adapted to the sample tube, and corresponding magnets are provided at the end of the sample tube and the inner wall of the inner end of the material receiving frame.

[0019] Furthermore, the sample moving mechanism comprises:

[0020] Moving tracks;

[0021] A mobile bracket connected to the mobile track;

[0022] A synchronous belt assembly is disposed on the moving track and is configured to drive the moving bracket to slide on the moving track;

[0023] A steering mechanism is connected to the moving track, and the steering mechanism can move through the moving track;

[0024] A sample carrying frame is drivingly connected to the steering mechanism, the length of the sample carrying frame is more than twice the length of the sample tube, and a limit strip is provided at the liquid collecting end of the sample carrying frame;

[0025] When the steering mechanism drives the sample carrying frame to rotate to the material receiving position, the entry end of the sample carrying frame is located above the liquid collecting end, the inclination angle of the sample carrying frame is the same as the inclination angle of the placement surface, and the sample tube can slide from the entry end to the liquid collecting end;

[0026] The steering mechanism can drive the sample carrying frame to rotate to a horizontal position;

[0027] When the steering mechanism drives the sample carrying frame to rotate to the discharge position, the entry end of the sample carrying frame is located below the liquid collecting end, and the inclination angle of the sample carrying frame is the same as the inclination angle of the receiving surface. The sample tube can slide from the liquid collecting end and enter the receiving surface through the entry end.

[0028] Furthermore, it also includes a collecting barrel, which is arranged at the installation port of the sealed shell, the opening of the collecting barrel faces outward, and a sample port is provided at the bottom of the collecting barrel. The internal space of the collecting barrel is connected with the interior of the sealed shell through the sample port, and the sample tube can pass through the sample port. An electric valve is provided on the collecting barrel for opening and closing the sample port.

[0029] Furthermore, a water collecting box is provided below the sample moving mechanism and the collecting bucket, and a water retaining strip is provided on the middle outer wall of the sample carrying frame.

[0030] Furthermore, it also includes a wiping mechanism, which is arranged above the sample moving mechanism and is configured to wipe the residual liquid on the sample tube.

[0031] Furthermore, the wiping mechanism includes a wiping cloth belt and a wiping drive assembly, and the wiping drive assembly is configured to drive the wiping cloth belt to wipe the residual liquid on the sample tube.

[0032] On the other hand, the present application also provides a sampling method for monitoring groundwater pollution in mining areas, using the above-mentioned sampling device for monitoring groundwater pollution in mining areas;

[0033] The sampling method includes the following steps:

[0034] When sampling begins, the sealed housing is placed in the water body to be sampled in the hydrological monitoring well, the release motor is started to drive the release disc to rotate, so that the sample tube that has been sampled is turned to the release position, the clamping mechanism is actuated, the clamping motor drives the clamping member to retract, and its extension part releases the fixation of the sample tube, and the sample tube slides out along the lower side of the placement surface under the action of gravity to the sample carrying frame entry end of the sample moving mechanism, and enters the liquid collecting end;

[0035] The sample moving mechanism is started, and the synchronous belt assembly drives the moving bracket to slide along the moving track, driving the sample carrying frame connected to the steering mechanism to move, opening the sample port, so that the sample tube extends out of the sealed housing, and the sample tube liquid inlet valve is opened, and groundwater smoothly enters the sample tube through the liquid inlet under the action of water pressure;

[0036] After the sampling is completed, the liquid inlet valve is closed, the sample moving mechanism is started again, and the synchronous belt assembly drives the moving bracket to slide in the opposite direction along the moving track, retracting the extended sample carrying frame into the sealed housing, and then closing the sample port;

[0037] The sample moving mechanism continues to move, and the sample carrying frame is sent to the vicinity of the material receiving surface. The sample carrying frame is controlled to have the same inclination angle as the material receiving surface. The sample tube slides from the liquid collecting end under the action of gravity, and enters the material receiving frame on the material receiving surface through the entry end. The sample tube and the end of the material receiving frame are provided with corresponding magnets, and the two are adsorbed and fixed;

[0038] The sample moving mechanism returns to the initial position and prepares for the next sampling.

[0039] Compared with the prior art, the sampling device and method for monitoring groundwater pollution in mining areas provided by the present invention isolates external interference through the closed structure of the sealed shell, creating a stable operating environment for the internal precision mechanism; when the sampling position is reached, the release mechanism is immediately started, and the placement surface with an acute angle on the release disk causes the sample tube to have a downward trend by gravity at the beginning, but it is firmly fixed by the clamping mechanism. When the sampling instruction is received, the release motor accurately drives the center of the disk to rotate, driving the sample tube to quickly move to the release position. At the same time, the clamping mechanism is released, and the sample tube slides down along the placement surface under the guidance of the directional rail to the sample moving mechanism. The sample moving mechanism intercepts the sliding sample tube according to the control, and moves the sample tube to the outside of the sealed shell to collect water samples. At this time, the liquid inlet on the sample tube is opened to collect the groundwater sample. After collection, the liquid inlet is closed, and the sample moving mechanism recycles the sample tube into the sealed shell. The receiving mechanism cooperates closely with it, and the acute angle receiving surface of the receiving disk matches the discharging direction of the sample moving mechanism. After completing the liquid collection, the sample tube moves from the sample moving mechanism to the receiving surface by gravity. Through the above arrangement, not only continuous sampling of samples is achieved, but the sample tube can also be automatically extended for sampling, reducing the use of liquid pipelines. A single sample tube is used for single sampling, avoiding cross-contamination between samples caused by liquid residue in the liquid channel during multiple sampling, thereby ensuring the purity of the samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of this specification 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 recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0041] Figure 1 The overall structure of the sampling device for monitoring groundwater pollution in mining areas provided by the present invention is shown in FIG. Figure 1 ;

[0042] Figure 2 A schematic diagram of the sealed housing structure of a sampling device for monitoring groundwater pollution in mining areas provided by the present invention;

[0043] Figure 3 The overall structure of the sampling device for monitoring groundwater pollution in mining areas provided by the present invention is shown in FIG. Figure 2 ;

[0044] Figure 4 A schematic diagram of the structure of a sample moving mechanism of a sampling device for monitoring groundwater pollution in mining areas provided by the present invention;

[0045] Figure 5A schematic diagram of the collecting barrel structure of a sampling device for monitoring groundwater pollution in mining areas provided by the present invention.

[0046] Reference numerals:

[0047] 10. Sealed housing;

[0048] 20. Release mechanism; 21. Placement surface; 201. Release disc; 202. Clamping mechanism; 203. Clamping member; 204. Release motor;

[0049] 30. Sample moving mechanism; 301. Moving track; 302. Moving bracket; 303. Synchronous belt assembly; 304. Steering mechanism; 305. Sample carrying frame; 306. Liquid collecting end;

[0050] 40. Material receiving mechanism; 41. Material receiving surface; 401. Material receiving disc; 402. Material receiving motor; 403. Material receiving frame;

[0051] 50. Sample tube;

[0052] 60. Collection bucket; 61. Sample port; 62. Electric valve; 63. Water collection tank;

[0053] 70. Wiping mechanism; 701. Wiping cloth belt; 702. Inner bracket; 703. Rotating part. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0055] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0056] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "(the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups are not excluded from existence or addition. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0057] Example 1

[0058] A specific embodiment of the present invention, as Figures 1 to 5 As shown, a sampling device for monitoring groundwater pollution in mining areas is disclosed, which may be referred to as "sampling device" hereinafter. The sampling device includes:

[0059] Sealed housing 10;

[0060] The release mechanism 20 is disposed in the sealed housing 10. A plurality of sample tubes 50 are disposed on a placement surface 21 of the release mechanism 20. The placement surface 21 forms an acute angle with a horizontal plane. The sample tubes 50 can slide out from the lower side of the placement surface 21 by gravity.

[0061] The sample moving mechanism 30 is disposed in the sealed housing 10 and is configured to receive the sample tube 50 that slides out from the placement surface 21 and move the sample tube 50 outside the sealed housing 10 to collect the water sample. The sample tube 50 is provided with a liquid inlet, and the liquid inlet is opened and closed by a liquid inlet valve;

[0062] The material receiving mechanism 40 is arranged in the sealed shell 10 and is located below the release mechanism 20. The material receiving mechanism 40 is provided with a material receiving surface 41. The material receiving surface 41 has an acute angle with the horizontal plane. The sample moving mechanism 30 can move the sample tube 50 after collecting the water sample from the higher side of the material receiving surface 41 to the material receiving surface 41 through gravity; wherein, the inclination direction of the side of the placement surface 21 for discharging materials is opposite to the inclination direction of the side of the material receiving surface 41 for collecting materials.

[0063] At the sampling point to be monitored, the sampling device is placed in the water body to be monitored. When the sampling depth is reached, the release mechanism 20 is immediately activated, and the placement surface 21 with an acute angle on the release disc 201 causes the sample tube 50 to initially slide down by gravity, but is firmly fixed by the clamping mechanism 202. When the sampling instruction is received, the release motor 204 accurately drives the center of the disc to rotate, driving the sample tube 50 to quickly move to the release position. At the same time, the clamping mechanism 202 is released, and the sample tube 50 slides along the placement surface 21 under the guidance of the directional rail to the sample moving mechanism 30. The sample moving mechanism 30 intercepts the sliding sample tube 50 according to the control, and moves the sample tube 50 to the outside of the sealed housing 10 to collect water samples. At this time, the liquid inlet on the sample tube 50 is opened to collect groundwater samples. After collection, the liquid inlet is closed, and the sample moving mechanism 30 recycles the sample tube 50 into the sealed housing 10. The receiving mechanism 40 cooperates closely with it, and the acute-angle receiving surface 41 of the receiving disc 401 matches the discharging direction of the sample moving mechanism 30. After completing the liquid collection, the sample tube 50 moves from the sample moving mechanism 30 to the receiving surface 41 by gravity.

[0064] A plurality of hydrological monitoring wells are arranged in the mining area, and water sampling is carried out at different depths in the hydrological monitoring wells. When sampling begins, the sealed housing 10 is placed in the water to be sampled in the hydrological monitoring well, the release motor 204 is started to drive the release disc 201 to rotate, so that the sample tube 50 that has been sampled is turned to the release position, the clamping mechanism 202 is actuated, the clamping motor drives the clamping member 203 to retract, and its extension part releases the fixation of the sample tube 50. Under the action of gravity, the sample tube 50 slides out along the lower side of the placement surface 21 to the entry end of the sample carrying frame 305 of the sample moving mechanism 30, and enters the liquid collecting end 306; the sample moving mechanism 30 is started, and the synchronous belt assembly 303 drives the moving bracket 302 to slide along the moving track 301, driving the sample carrying frame 305 connected to the steering mechanism 304 to move, opening the sample port 61, so that the sample tube 50 extends out of the sealed housing 10, and the liquid inlet valve of the sample tube 50 is opened, and the groundwater is under the action of water pressure. The liquid flows smoothly into the sample tube 50 through the liquid inlet; after sampling is completed, the liquid inlet valve is closed, the sample moving mechanism 30 is started again, and the synchronous belt assembly 303 drives the moving bracket 302 to slide in the opposite direction along the moving track 301, and the extended sample carrying frame 305 is retracted into the sealed shell 10, and then the sample port 61 is closed; the sample moving mechanism 30 continues to move, and sends the sample carrying frame 305 to the vicinity of the receiving surface 41, and controls the inclination angle of the sample carrying frame 305 to be the same as that of the receiving surface 41. The sample tube 50 slides from the liquid collecting end 306 under the action of gravity, and enters the receiving frame 403 of the receiving surface 41 through the entry end. Corresponding magnets are provided at the ends of the sample tube 50 and the receiving frame 403, and the two are adsorbed and fixed; the sample moving mechanism 30 returns to the initial position, and repeats the above actions for the next sampling until the water sample collection at all predetermined depth positions is completed.

[0065] In some embodiments, the release mechanism 20 includes: a release disk 201, the disk surface of the release disk 201 includes a placement surface 21, and the sample tube 50 includes multiple sample tubes 50, and the multiple sample tubes 50 are arranged in a ring on the placement surface 21 of the release disk 201, and the two ends of the sample tube 50 are arranged in the radial direction of the release disk 201; a release motor 204, which is driven and connected to the center of the release disk 201 and is configured to drive the release motor 204 to rotate; a clamping mechanism 202, which is arranged on the release disk 201, is configured to fix the sample tube 50, and release the sample tube 50 when the sample tube 50 is in the release position; an directional rail, which is arranged on the release disk 201 and is located on both sides of the sample tube 50, and the sample tube 50 is slidably connected to the directional rail.

[0066] The release disc 201 serves as the supporting base of the sample tube 50. The release motor 204 drives the central axis of the disc to send the target sample tube 50 to the release preparation position according to the preset program. The clamping mechanism 202 on the other side of the disc responds at the same time, and the clamping motor drives the clamping member 203 to move accurately. When sampling, the clamping motor moves upward, and the extension of the clamping member 203 leaves the sample tube 50, and the sample tube 50 slides smoothly along the directional rail to the sample moving mechanism 30.

[0067] The release disc 201 and the clamping mechanism 202 cooperate closely, making the sample tube 50 efficient to use and greatly improving the sampling frequency. The precise motor drive and the directional rail stable guidance ensure that the sample tube 50 is released at an accurate position, which increases the reliability of the entire sampling process.

[0068] The clamping mechanism 202 includes a clamping motor and a clamping member 203. The clamping motor is connected to the other disk surface of the placement surface 21 relative to the release disk 201. The clamping member 203 passes through the release disk 201 and is connected to the clamping motor drive. The clamping member 203 has an extension portion. When the clamping motor drives the clamping member 203 to retract, the extension portion can abut against the sample tube 50.

[0069] The clamping motor can drive the clamping member 203 to extend and retract. When the clamping member 203 retracts, the extension portion can abut against the sample tube 50. When the clamping member 203 extends, the extension portion does not abut against the sample tube 50, and the sample tube 50 can slide off.

[0070] In some embodiments, the material receiving mechanism 40 includes a material receiving disc 401, a material receiving motor 402, and a material receiving frame 403. The disc surface of the material receiving disc 401 includes a material receiving surface 41. The material receiving motor 402 is driven and connected to the center of the material receiving disc 401. The material receiving frame 403 includes multiple material receiving frames 403, which are arranged in a ring around the material receiving surface 41, and both ends of the material receiving frame 403 are arranged in the radial direction of the material receiving surface 41. An inlet is provided at the outward end of the material receiving frame 403. The material receiving frame 403 is adapted to the sample tube 50, and corresponding magnets are provided at the end of the sample tube 50 and the inner wall of the inner end of the material receiving frame 403.

[0071] In the material collection stage, the sharp-angled material collection surface 41 of the material collection disc 401 precisely docks with the material discharging of the sample moving mechanism 30, which facilitates the movement of the sample tube 50. The material collection motor 402 drives the central axis of the disc to rotate. The material collection motor 402 uses a DC brushless motor with good speed regulation performance, which can flexibly adjust the position of the material collection frame 403 to allow the sample tube 50 to fall into the frame accurately. The material collection frame 403 is arranged in a ring, and the two ends are radially stretched to facilitate the entry of the sample tube 50. At the same time, it is adsorbed by the magnet at the end of the sample tube 50 to fix the sample tube 50.

[0072] In some embodiments, the sample moving mechanism 30 includes: a moving track 301; a moving bracket 302, connected to the moving track 301; a synchronous belt assembly 303, arranged on the moving track 301, the moving bracket 302 is drivingly connected to the synchronous belt assembly 303, so that the synchronous belt assembly 303 drives the moving bracket 302 to slide on the moving track 301; a steering mechanism 304, connected to the moving track 301, the steering mechanism 304 can be moved by the moving track 301; a sample carrying frame 305, drivingly connected to the steering mechanism 304, the length of the sample carrying frame 305 is more than twice the length of the sample tube 50, and the liquid collecting end 306 of the sample carrying frame 305 is provided with a limit bar; wherein, When the steering mechanism 304 drives the sample carrying frame 305 to rotate to the material receiving position, the entry end of the sample carrying frame 305 is located above the liquid collecting end 306, the inclination angle of the sample carrying frame 305 is the same as the inclination angle of the placement surface 21, and the sample tube 50 can slide from the entry end to the liquid collecting end 306; the steering mechanism 304 can drive the sample carrying frame 305 to rotate to a horizontal position; when the steering mechanism 304 drives the sample carrying frame 305 to rotate to the material discharging position, the entry end of the sample carrying frame 305 is located below the liquid collecting end 306, the inclination angle of the sample carrying frame 305 is the same as the inclination angle of the material receiving surface 41, and the sample tube 50 can slide from the liquid collecting end 306 and enter the material receiving surface 41 through the entry end. The rotating mechanism includes a rotating motor.

[0073] When the sample moving mechanism 30 is working, the moving bracket 302 is connected to the moving track 301, and the synchronous belt assembly 303 drives the moving bracket 302 to slide on the moving track 301, thereby driving the steering mechanism 304 connected thereto to move, and the steering mechanism 304 drives the sample carrying frame 305 to move. When the steering mechanism 304 drives the sample carrying frame 305 to rotate to the material receiving position, the entry end of the sample carrying frame 305 is located above the liquid collecting end 306, and the inclination angle is the same as the placement surface 21 of the release mechanism 20, so that the sample tube 50 that slides out from the placement surface 21 of the release mechanism 20 can smoothly slide through the entry end to the liquid collecting end 306; when sampling, the sample carrying frame 305 moves outside the sealed housing 10, and the liquid inlet valve of the sample tube 50 is opened to collect the sample. After the sampling is completed, the sample moving mechanism 30 operates in the reverse direction to retract the sample carrying frame 305 into the sealed housing 10. When the sample tube 50 is to be transferred to the material receiving mechanism 40, the steering mechanism 304 drives the sample supporting frame 305 to rotate to the material discharging position. At this time, the entrance end of the sample supporting frame 305 is located below the liquid collecting end 306, and the inclination angle is the same as the material receiving surface 41. The sample tube 50 can slide from the liquid collecting end 306 and enter the material receiving surface 41 through the entrance end.

[0074] In some embodiments, a collecting barrel 60 is further included. The collecting barrel 60 is arranged at the installation opening of the sealed housing 10. The opening of the collecting barrel 60 faces outward. A sample port 61 is arranged at the bottom of the collecting barrel 60. The internal space of the collecting barrel 60 is connected to the inside of the sealed housing 10 through the sample port 61. The sample tube 50 can pass through the sample port 61. The collecting barrel 60 is provided with an electric valve 62 for opening and closing the sample port 61. The collecting barrel 60 is arranged at the installation opening of the sealed housing 10. When the sample moving mechanism 30 moves the sample tube 50 to the sampling position, that is, extends out of the sealed housing 10, the sample port 61 at the bottom of the collecting barrel 60 is opened, and the sample tube 50 passes through the sample port 61 for sampling. After the sampling is completed, the sample moving mechanism 30 retracts the sample tube 50, and the sample port 61 is closed accordingly. The opening and closing of the sample port 61 is controlled by the electric valve 62 on the collecting barrel 60 during the whole process, so as to ensure that the internal environment of the sealed housing 10 is relatively stable and prevent the entry of external impurities.

[0075] On the one hand, the collection barrel 60 provides a transition space for sampling the sample tube 50 outside the sealed shell 10, making the sampling operation more standardized; on the other hand, the electric valve 62 controls the opening and closing of the sample port 61, thereby enhancing the sealing of the device, reducing the interference of external factors on sample collection, and ensuring the accuracy of the collected samples, laying the foundation for subsequent accurate detection of groundwater pollution conditions in mining areas.

[0076] A water collecting box 63 is provided below the sample moving mechanism 30 and the collecting barrel 60, and a water retaining bar is provided on the middle outer wall of the sample carrying frame 305. A water collecting box 63 is provided below the sample moving mechanism 30 and the collecting barrel 60. During the sampling process of the sample tube 50, liquid entering or dripping will be collected by the water collecting box 63. A water retaining bar is provided on the middle outer wall of the sample carrying frame 305, and the liquid on the sample carrying frame 305 is guided to flow into the water collecting box 63.

[0077] The water collecting box 63 cooperates with the water retaining bar to effectively prevent the liquid from contaminating the components and samples during the sampling process, and avoids the liquid from causing corrosion or short circuit damage to other precision components inside the device, thereby extending the service life of the device, keeping the inside of the device clean, reducing cleaning and maintenance work, and ensuring the continuous and stable operation of the device.

[0078] In some optional embodiments, the sampling device for monitoring groundwater pollution in mining areas further includes a wiping mechanism 70 , which is disposed above the sample moving mechanism 30 and is configured to wipe residual liquid on the sample tube 50 .

[0079] Specifically, the wiping mechanism 70 includes a wiping cloth belt 701 and a wiping drive assembly, and the wiping drive assembly is configured to drive the wiping cloth belt 701 to wipe the residual liquid on the sample tube. Exemplarily, the wiping cloth belt 701 has a rotating portion 703 parallel to the sample carrying frame 305 above the sample carrying frame 305, and an extending portion extending downward from the rotating end, and a retaining portion extending vertically upward from the end of the extending portion. The wiping cloth belt 701 includes a plastic film portion and a water-absorbing paper portion, which are arranged at intervals and are continuous as a whole.

[0080] Furthermore, the wiping drive assembly also includes a linear drive, an inner bracket 702, a cloth belt motor and a lifting motor; the inner bracket 702 is connected to the linear drive and is evenly arranged along the setting direction of the wiping cloth belt 701, and is used to support the wiping cloth belt 701; the cloth belt motor is connected to the wiping cloth belt 701 for driving the wiping cloth belt 701; the lifting motor is connected to the linear drive.

[0081] When sampling the sample tube 50, the rotating part 703 of the wiping cloth belt 701 can abut against the sample tube 50 at the liquid collecting end 306, and expose the liquid inlet. The cloth belt motor drives the rotating part 703 of the wiping cloth belt 701 to move in advance, so that the wiping cloth belt 701 of the rotating part 703 is the plastic film part;

[0082] After sampling of the sample tube 50 is completed, the wiping cloth belt 701 moves up, and the cloth belt motor drives the rotating part 703 of the wiping cloth belt 701 to move, so that the wiping cloth belt 701 of the rotating part 703 is the absorbent paper part, and the wiping cloth belt 701 moves down to fit the entire sample tube 50, and then moves up, and when the sample tube 50 slides, the downward extending part moves to help push the sample tube 50 out, wherein the downward extending part is made of the same material as the rotating part 703.

[0083] The wiping mechanism 70 is located above the sample moving mechanism 30. When sampling the sample tube 50, the rotating part 703 of the wiping cloth belt 701 is pre-moved under the drive of the cloth belt motor, so that the rotating part 703 is a plastic film part. At this time, the rotating part 703 abuts against the sample tube 50 at the liquid collecting end 306 and exposes the liquid inlet. The plastic film part can prevent most of the surface of the sample tube 50 from contacting with the external liquid and residual liquid when sampling. After the sampling is completed, the lifting motor drives the linear driver to move the wiping cloth belt 701 upward, and the cloth belt motor drives the rotating part 703 to move, so that it becomes a water-absorbing paper part, and then the wiping cloth belt 701 moves down to close to the entire sample tube 50, absorbing the residual liquid on the sample tube 50, and finally the wiping cloth belt 701 moves up, and its downward extension part helps the sample tube 50 to move out when the sample tube 50 slides. The extension part is made of the same material as the rotating part 703, so that the liquid on the side of the sample tube 50 can also be absorbed. When sampling from the sample tube 50, the end of the sample tube 50, the main body, and part of the sample supporting frame 305 are exposed to the external liquid to reduce the residual liquid surface. At the same time, the sample supporting frame 305 protects the side surfaces and bottom of the sample tube 50 from contacting the liquid.

[0084] The sample port 61 is provided with a rubber pad to increase the tight sealing between the sample tube 50 and the sample port 61 to prevent the liquid from entering the sealed housing 10 through the sample port 61. At the same time, the rotating part 703 is provided with an inner bracket 702 with an inner lining, and the rotating part 703 abuts against the sample tube 50. On the one hand, it can fix the sample tube 50 so that the sample tube 50 will not move in the sample supporting frame 305 and will not move when passing through the sample port 61. On the other hand, it can cover part of the top surface of the sample tube 50 to prevent water pollution.

[0085] The plastic film part and the absorbent paper part are distributed in an ABAB pattern, and the two form a complete strip. The rotation setting of the plastic film part and the absorbent paper part in the rotating part 703 can be adjusted by driving the cloth belt motor.

[0086] The arrangement of the linear drive and the lifting motor can control the wiping mechanism 70 to move in parallel with the direction of the sample moving mechanism 30 as a whole, so that the two form a coordination.

[0087] The present application also provides a sampling method for monitoring groundwater pollution in mining areas, using the aforementioned sampling device for monitoring groundwater pollution in mining areas, comprising the following steps:

[0088] When sampling begins, the sealed housing 10 is placed in the water body to be sampled in the hydrological monitoring well, the release motor 204 is started to drive the release disc 201 to rotate, so that the sample tube 50 that has been sampled is turned to the release position, the clamping mechanism 202 is actuated, the clamping motor drives the clamping member 203 to retract, and its extension part releases the fixation of the sample tube 50. Under the action of gravity, the sample tube 50 slides out along the lower side of the placement surface 21 to the entry end of the sample carrying frame 305 of the sample moving mechanism 30, and enters the liquid collecting end 306;

[0089] The sample moving mechanism 30 is started, and the synchronous belt assembly 303 drives the moving bracket 302 to slide along the moving track 301, driving the sample carrying frame 305 connected to the steering mechanism 304 to move, opening the sample port 61, so that the sample tube 50 extends out of the sealed housing 10, and the liquid inlet valve of the sample tube 50 is opened, and the groundwater smoothly enters the sample tube 50 through the liquid inlet under the action of water pressure;

[0090] After the sampling is completed, the liquid inlet valve is closed, the sample moving mechanism 30 is started again, and the synchronous belt assembly 303 drives the moving bracket 302 to slide in the opposite direction along the moving track 301, and the extended sample carrying frame 305 is retracted into the sealed housing 10, and then the sample port 61 is closed;

[0091] The sample moving mechanism 30 continues to move, and the sample carrying frame 305 is sent to the vicinity of the material receiving surface 41. The sample carrying frame 305 is controlled to have the same inclination angle as the material receiving surface 41. The sample tube 50 slides from the liquid collecting end 306 under the action of gravity, and enters the material receiving frame 403 of the material receiving surface 41 through the entry end. The sample tube 50 and the end of the material receiving frame 403 are provided with corresponding magnets, and the two are adsorbed and fixed;

[0092] The sample moving mechanism 30 returns to the initial position and repeats the above-mentioned action to perform the next sampling.

[0093] During the sampling process, the release mechanism 20, the sample moving mechanism 30 and the material receiving mechanism 40 work in coordination, and the sample tube 50 is transferred in an orderly manner between the mechanisms by gravity, so as to realize automatic continuous sampling and high sampling efficiency. Moreover, at different depths, a single sample tube 50 is sampled once, and after continuous sampling for multiple times, cross contamination problems between water samples can be avoided, and the purity of the samples can be guaranteed to the greatest extent, so that the collected samples can accurately reflect the actual pollution status of groundwater at different locations and depths in the mining area.

[0094] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A sampling device for monitoring groundwater pollution in mining areas, characterized in that: include: Sealed housing; A release mechanism is arranged in the sealed housing, a plurality of sample tubes are arranged on the placement surface of the release mechanism, a liquid inlet is arranged on the sample tube, and the opening and closing of the liquid inlet is controlled by a liquid inlet valve; an angle is formed between the placement surface and the horizontal plane, and the angle is an acute angle, and the sample tube can slide out from the lower side of the placement surface by gravity; A sample moving mechanism is disposed in the sealed housing and is configured to receive the sample tube that slides out from the placement surface and move the sample tube to outside the sealed housing to collect a water sample; A material receiving mechanism is arranged in the sealing shell and is located below the releasing mechanism. The material receiving mechanism is provided with a material receiving surface. The material receiving surface and the horizontal plane have an included angle, which is an acute angle. The sample moving mechanism can move the sample tube after collecting the water sample from the side with the higher material receiving surface to the material receiving surface through gravity. Wherein, the inclination direction of the side of the placement surface for discharging materials is opposite to the inclination direction of the side of the receiving surface for receiving materials.

2. The sampling device for monitoring groundwater pollution in mining areas according to claim 1 is characterized in that: The release mechanism comprises: A release disk, wherein the disk surface of the release disk includes the placement surface, a plurality of the sample tubes are arranged in a ring on the placement surface of the release disk, and two ends of the sample tubes are arranged in the radial direction of the release disk; a release motor, drivingly connected to the center of the release disc and configured to drive the release motor to rotate; a clamping mechanism, disposed on the release disc, configured to fix the sample tube and release the sample tube when the sample tube is in a release position; The directional rails are arranged on the release disc and are respectively located on both sides of the sample tube. The sample tube is slidably connected to the directional rails.

3. The sampling device for monitoring groundwater pollution in mining areas according to claim 2 is characterized in that: The clamping mechanism includes a clamping motor and a clamping member. The clamping motor is connected to the other disk surface opposite to the placement surface of the release disk. The clamping member passes through the release disk and is driven and connected to the clamping motor. The clamping member has an extension portion. When the clamping motor drives the clamping member to retract, the extension portion can abut against the sample tube.

4. The sampling device for monitoring groundwater pollution in mining areas according to claim 1, characterized in that: The material receiving mechanism includes a material receiving disc, a material receiving motor and a material receiving frame. The disc surface of the material receiving disc includes the material receiving surface. The material receiving motor is driven and connected to the center of the material receiving disc. The material receiving frame includes multiple material receiving frames. The multiple material receiving frames are arranged in a ring around the material receiving surface, and the two ends of the material receiving frames are arranged in the radial direction of the material receiving surface. An inlet is provided at the outward end of the material receiving frame. The material receiving frame is adapted to the sample tube, and corresponding magnets are provided at the end of the sample tube and the inner wall of the inner end of the material receiving frame.

5. The sampling device for monitoring groundwater pollution in mining areas according to claim 1 is characterized in that: The sample moving mechanism comprises: Moving tracks; A movable bracket connected to the movable track; A synchronous belt assembly, disposed on the moving track and configured to drive the moving bracket to slide on the moving track; A steering mechanism connected to the moving track, wherein the steering mechanism can move through the moving track; The sample carrying frame is drivingly connected to the steering mechanism.

6. The sampling device for monitoring groundwater pollution in mining areas according to claim 5, characterized in that: It also includes a collecting barrel, a sample port is provided at the bottom of the collecting barrel, the internal space of the collecting barrel is connected with the interior of the sealed shell through the sample port, the sample tube can pass through the sample port, and an electric valve is provided on the collecting barrel for opening and closing the sample port.

7. The sampling device for monitoring groundwater pollution in mining areas according to claim 6 is characterized in that: A water collecting box is arranged below the sample moving mechanism and the collecting bucket, and a water retaining strip is arranged on the middle outer wall of the sample carrying frame.

8. The sampling device for monitoring groundwater pollution in mining areas according to claim 6, characterized in that: It also includes a wiping mechanism, which is arranged above the sample moving mechanism and is configured to wipe the residual liquid on the sample tube.

9. The sampling device for monitoring groundwater pollution in mining areas according to claim 8, characterized in that: The wiping mechanism includes a wiping cloth belt and a wiping drive assembly, and the wiping drive assembly is configured to drive the wiping cloth belt to wipe the residual liquid on the sample tube.

10. A sampling method for monitoring groundwater pollution in mining areas, characterized in that: Use of the sampling device for monitoring groundwater pollution in mining areas as described in any one of claims 1 to 9; The sampling method comprises the following steps: When sampling begins, the sealed housing is placed in the water body to be sampled in the hydrological monitoring well, the release motor is started to drive the release disc to rotate, so that the sample tube that has been sampled is turned to the release position, the clamping mechanism is actuated, the clamping motor drives the clamping member to retract, and its extension part releases the fixation of the sample tube, and the sample tube slides out along the lower side of the placement surface under the action of gravity to the sample carrying frame entry end of the sample moving mechanism, and enters the liquid collecting end; The sample moving mechanism is started, and the synchronous belt assembly drives the moving bracket to slide along the moving track, driving the sample carrying frame connected to the steering mechanism to move, the sample tube extends out of the sealed housing, and the sample tube liquid inlet valve is opened, and groundwater enters the sample tube under the action of water pressure; After the sampling is completed, the liquid inlet valve is closed, the sample moving mechanism is started again, and the synchronous belt assembly drives the moving bracket to slide in the opposite direction along the moving track, retracting the extended sample carrying frame into the sealed housing, and then closing the sample port; The sample moving mechanism continues to move, and the sample carrying frame is sent to the receiving surface. The sample carrying frame is controlled to have the same inclination angle as the receiving surface. The sample tube slides from the liquid collecting end under the action of gravity and enters the receiving frame on the receiving surface. The sample tube and the end of the receiving frame are provided with corresponding magnets, and the two are adsorbed and fixed. The sample moving mechanism returns to the initial position and prepares for the next sampling.

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