A sampling device and method for monitoring groundwater pollution in mining areas

Abstract

The present application relates to a sampling device and method for monitoring groundwater pollution in mining areas. The sampling device includes a sealed housing and a release mechanism, a sample moving mechanism, and a material receiving mechanism disposed within the sealed housing; a plurality of sample tubes are provided on the placement surface of the release mechanism, and a liquid inlet is provided on the sample tubes; the sample tubes 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 tubes that slide out from the placement surface and move the sample tubes outside the sealed housing to collect water samples; the material receiving mechanism is provided with a material receiving surface, and the sample moving mechanism can move the sample tubes after collecting water samples onto the material receiving surface from the higher side of the material receiving surface by gravity; the inclination direction of the discharging side of the placement surface is opposite to the inclination direction of the material receiving side of the material receiving surface. The present application realizes automatic sampling, reduces the use of liquid pipelines, and performs single sampling with a single sample tube, avoiding cross-contamination between samples easily caused by multiple samplings.

Description

Technical Field

[0001] This application belongs to the technical field of mine groundwater monitoring, and more particularly relates to a sampling device and method for mine groundwater pollution monitoring. Background Art

[0002] During the process of metal mine exploitation, groundwater will be polluted. Therefore, it is necessary to monitor the groundwater in the mining area. Stratified sampling is a common sampling method. By sampling groundwater at different depth positions and then analyzing and testing the water samples of different depth water layers, the pollution situation of the mine groundwater can be obtained.

[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 the specified depth position in the water body through a rope, and use the opening and closing of the valve to achieve water sampling. However, only one water sample at one depth position can be obtained each time, continuous sampling cannot be achieved, the operation is complex, and the sampling efficiency is low. The second sampling method is to directly use a water pump to extract water samples at different depth positions to achieve multiple samplings. However, the accuracy of the sampling depth position is poor, it is difficult to obtain water samples at precise depth positions, and in the multiple sampling operations of the pipeline system connected to the water pump, the liquid extracted in the previous time will remain. These residual liquids will be mixed with the new samples extracted subsequently. However, the components in the mine groundwater are complex, and the pollution degrees and components of the water bodies in different regions and at different depths are different. Once mixed, it will cause mutual pollution between water samples, seriously interfering with the judgment of the true pollution situation of the groundwater. This sample pollution situation makes the subsequent detection data lose accuracy and cannot provide a reliable basis for the treatment of mine groundwater pollution. Summary of the Invention

[0004] In view of the above analysis, the embodiments of the present invention aim to provide a sampling device for mine groundwater pollution monitoring to solve at least one of the above problems existing in the prior art.

[0005] The object of the present invention is achieved as follows:

[0006] On the one hand, a sampling device for mine groundwater pollution monitoring is provided, including:

[0007] A sealed housing;

[0008] A release mechanism, which is arranged in the sealed housing. A plurality of sample tubes are arranged on the placement surface of the release mechanism. The sample tubes are provided with liquid inlets, and the liquid inlets are controlled to open and close by liquid inlet valves; the placement surface has an angle with the horizontal plane, and the angle is an acute angle. The sample tubes can slide out from the lower side of the placement surface under the action of gravity;

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

[0010] A material receiving mechanism is disposed in the sealed housing and is located below the releasing mechanism. The material receiving mechanism is provided with a material receiving surface, and the material receiving surface forms an acute angle with the horizontal plane. The sample moving mechanism can move the sample tube after collecting the water sample onto the material receiving surface from the higher side of the material receiving surface by gravity.

[0011] Wherein, the inclination direction of the discharging side of the placement surface is opposite to the inclination direction of the material receiving side of the material receiving surface.

[0012] Further, the releasing mechanism includes:

[0013] A releasing disc, the disc surface of the releasing disc includes a placement surface, and a plurality of sample tubes are arranged around the placement surface of the releasing disc. The two ends of the sample tube are arranged in the radial direction of the releasing disc.

[0014] A releasing motor is drivingly connected to the center of the releasing disc and is configured to drive the releasing disc to rotate.

[0015] A clamping mechanism is disposed on the releasing disc and is configured to fix the sample tube and release the sample tube when the sample tube is in the releasing position.

[0016] A guiding rail is disposed on the releasing disc and is located on both sides of the sample tube respectively. The sample tube is slidably connected to the guiding rail.

[0017] Further, the clamping mechanism includes a clamping motor and a clamping member. The clamping motor is connected to the other disc surface opposite to the placement surface of the releasing disc. The clamping member passes through the releasing disc and is drivingly 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.

[0018] Further, 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 drivingly connected to the center of the material receiving disc. There are a plurality of material receiving frames, and the plurality of material receiving frames are arranged around the material receiving surface. The two ends of the material receiving frame are arranged in the radial direction of the material receiving surface. The outer end of the material receiving frame is provided with an inlet. The material receiving frame is adapted to the sample tube. Corresponding magnets are provided on the end of the sample tube and the inner wall of the inner end of the material receiving frame.

[0019] Further, the sample moving mechanism includes:

[0020] A moving track;

[0021] A moving bracket, which is connected to the moving track;

[0022] A synchronous belt assembly is arranged on a moving track and is configured to drive a 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 limiting strip is provided at the liquid collecting end of the sample carrying frame;

[0025] Wherein, when the steering mechanism drives the sample carrying frame to rotate to the material receiving position, the inlet 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 through the inlet end to the liquid collecting end;

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

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

[0028] Furthermore, a collection bucket is further included. The collection bucket is arranged at the installation opening of the sealed housing. The opening of the collection bucket faces outward. A sample port is provided at the bottom of the collection bucket. The internal space of the collection bucket is communicated with the inside of the sealed housing through the sample port. The sample tube can pass through the sample port, and an electric valve is provided on the collection bucket for opening and closing the sample port.

[0029] Furthermore, a water collection tank is arranged below the sample moving mechanism and the collection bucket, and a water blocking strip is provided on the outer wall of the middle part of the sample carrying frame.

[0030] Furthermore, a wiping mechanism is further included. The wiping mechanism 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 driving assembly. The wiping driving 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 starting sampling, place the sealed housing in the water body to be sampled in the hydrogeological monitoring well. Start the release motor to drive the release disc to rotate, so that the sampled sample tube is rotated to the release position. The clamping mechanism acts, and the clamping motor drives the clamping member to retract, and its extension releases the fixation of the sample tube. The sample tube slides out along the lower side of the placement surface under the action of gravity to the inlet end of the sample carrying frame of the sample moving mechanism and enters the liquid collection end.

[0035] Start the sample moving mechanism. 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 outside the sealed housing, and opening the liquid inlet valve of the sample tube. The groundwater smoothly enters the sample tube through the liquid inlet under the action of water pressure.

[0036] After sampling is completed, close the liquid inlet valve. The sample moving mechanism is started again. The synchronous belt assembly drives the moving bracket to slide reversely 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, sending the sample carrying frame near the receiving surface. Control the inclination angle of the sample carrying frame to be the same as that of the receiving surface. The sample tube slides from the liquid collection end under the action of gravity, enters the receiving frame on the receiving surface through the inlet end. Corresponding magnets are provided at the ends of the sample tube and the receiving frame, and the two are adsorbed and fixed.

[0038] The sample moving mechanism returns to the initial position, preparing 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 isolate external interference through the closed structure of the sealed housing, creating a stable operating environment for the internal precision mechanisms. When the sampling position is reached, the release mechanism is immediately activated. The acute-angled placement surface on the release disc causes the sample tube to have a downward sliding tendency due to gravity initially, but it is firmly fixed by the clamping mechanism. When the sampling instruction is received, the release motor precisely drives the rotation of the center of the disc, driving the sample tube to quickly reach the release position. At the same time, the clamping mechanism is loosened, and the sample tube slides down along the placement surface under the guidance of the guiding track towards the sample moving mechanism. The sample moving mechanism intercepts the sliding sample tube according to the control and moves the sample tube outside the sealed housing to collect the water sample. 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 retrieves the sample tube into the sealed housing. The material receiving mechanism cooperates closely with it. The acute-angled material receiving surface of the material receiving disc fits with the discharging direction of the sample moving mechanism. After the sample tube completes the liquid collection, it moves into the material receiving surface from the sample moving mechanism by gravity. Through the above settings, not only continuous sampling of samples is achieved, but also the sample tube can automatically extend for sampling, reducing the use of liquid pipelines. Single sample tubes are used for single sampling, avoiding cross-contamination between samples caused by liquid remaining in the liquid channels during multiple samplings, ensuring the purity of the samples. Description of the Drawings

[0040] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the embodiments of this specification. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0041] Figure 1 Schematic diagram of the overall structure of the sampling device for monitoring groundwater pollution in mining areas provided by the present invention Figure 1 ;

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

[0043] Figure 3 Schematic diagram of the overall structure of the sampling device for monitoring groundwater pollution in mining areas provided by the present invention Figure 2 ;

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

[0045] Figure 5Schematic structural diagram of the collection barrel of the 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. Placing 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 collection 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 barrel; 61. Sample port; 62. Electric valve; 63. Water collection tank;

[0053] 70. Wiping mechanism; 701. Wiping cloth belt; 702. Inner bracket; 703. Rotary part. Detailed implementation manners

[0054] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. It should be noted that, without conflict, the implementation manners and features in the present disclosure can be combined with each other, separated, interchanged and / or rearranged. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0055] In the drawings, for the purpose of clarity and / or description, the dimensions and relative dimensions of components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences may be performed in a different order from that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order opposite to that described. In addition, the same reference numerals denote the same components.

[0056] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are also intended to include the plural forms. In addition, when the terms "comprise" and / or "include" and their variants are used in this specification, it is stated that there are the stated features, integers, steps, operations, components, assemblies and / or groups thereof, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies and / or groups thereof. It should also be noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms and not as terms of degree, so that they are used to explain the inherent deviations of measured values, calculated values and / or provided values that would be recognized by those of ordinary skill in the art.

[0057] Embodiment 1

[0058] A specific embodiment of the present invention, as Figures 1 to 5 shown, discloses a sampling device for monitoring groundwater pollution in a mining area, hereinafter referred to as the "sampling device" for short. The sampling device includes:

[0059] A sealed housing 10;

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

[0061] A sample moving mechanism 30 is arranged in the sealed housing 10 and is configured to receive the sample tubes 50 that slide out from the placement surface 21 and move the sample tubes 50 outside the sealed housing 10 to collect water samples. An inlet is provided on the sample tube 50, and the opening and closing of the inlet are controlled by an inlet valve;

[0062] A material receiving mechanism 40 is arranged in the sealed housing 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 forms an angle with the horizontal plane, and the angle is an acute angle. The sample moving mechanism 30 can move the sample tubes 50 after collecting water samples into the material receiving surface 41 from the higher side of the material receiving surface 41 by the action of gravity; wherein, the inclination direction of the discharging side of the placement surface 21 is opposite to the inclination direction of the material receiving side of the material receiving surface 41.

[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. The synchronous belt assembly 303 drives the moving bracket 302 to slide on the moving track 301, thereby driving the connected steering mechanism 304 to move, and the steering mechanism 304 in turn drives the sample carrier frame 305 to move. When the steering mechanism 304 drives the sample carrier frame 305 to rotate to the material receiving position, the inlet end of the sample carrier 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. In this way, the sample tube 50 sliding out from the placement surface 21 of the release mechanism 20 can smoothly pass through the inlet end and slide to the liquid collecting end 306. When sampling, the sample carrier 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 sampling is completed, the sample moving mechanism 30 operates in the reverse direction to retract the sample carrier frame 305 into the sealed housing 10. When the sample tube 50 needs to be transferred to the material receiving mechanism 40, the steering mechanism 304 drives the sample carrier frame 305 to rotate to the discharging position. At this time, the inlet end of the sample carrier 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 inlet end.

[0074] In some embodiments, a collection bucket 60 is further included. The collection bucket 60 is arranged at the installation opening of the sealed housing 10. The opening of the collection bucket 60 faces outward. A sample port 61 is provided at the bottom of the collection bucket 60. The internal space of the collection bucket 60 is communicated with the inside of the sealed housing 10 through the sample port 61. The sample tube 50 can pass through the sample port 61. An electric valve 62 is provided on the collection bucket 60 for opening and closing the sample port 61. The collection bucket 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, when it extends outside the sealed housing 10, the sample port 61 at the bottom of the collection bucket 60 is opened, and the sample tube 50 passes through the sample port 61 for sampling. After 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 are controlled by the electric valve 62 on the collection bucket 60 throughout the process, ensuring the relative stability of the internal environment of the sealed housing 10 and preventing foreign impurities from entering.

[0075] On the one hand, the collection bucket 60 provides a transition space for sampling the sample tube 50 outside the sealed housing 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, enhancing the sealing performance of the device, reducing the interference of external factors on sample collection, ensuring the accuracy of the collected samples, and laying a foundation for subsequent accurate detection of the groundwater pollution status in the mining area.

[0076] A water collection tank 63 is provided below the sample moving mechanism 30 and the collection bucket 60, and a water blocking strip is provided on the outer wall of the middle part of the sample carrying frame 305. A water collection tank 63 is provided below the sample moving mechanism 30 and the collection bucket 60. During the sampling process of the sample tube 50, if liquid enters or drips, it will be collected by the water collection tank 63. A water blocking strip is provided on the outer wall of the middle part of the sample carrying frame 305, and the liquid on the sample carrying frame 305 is guided into the water collection tank 63.

[0077] The water collection tank 63 cooperates with the water blocking strip to effectively prevent liquid contamination of components and samples during the sampling process, avoid damage such as corrosion or short circuit to other precision components inside the device, extend the service life of the device, keep the inside of the device clean, reduce cleaning and maintenance work, and ensure the continuous and stable operation of the device.

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

[0079] Specifically, the wiping mechanism 70 includes a wiping cloth belt 701 and a wiping drive assembly. 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 part 703 parallel to the sample carrying frame 305 above the sample carrying frame 305, and an extending part starting from the rotating end and extending downward, and a remaining part extending vertically upward from the end of the extending part. The wiping cloth belt 701 includes a plastic film part and a blotting paper part, which are arranged at intervals and are integrally continuous.

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

[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 collection end 306 and expose the liquid inlet. The cloth belt motor pre-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 plastic film part;

[0082] After sampling in the sample tube 50 is completed, the wiping cloth belt 701 moves upward, 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. The wiping cloth belt 701 moves downward and clings to the entire sample tube 50. Then the wiping cloth belt 701 moves upward. When the sample tube 50 slides, the downward extending part moves to boost the sample tube 50 out. Among them, 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 in the sample tube 50, the rotating part 703 of the wiping cloth belt 701 moves in advance under the drive of the cloth belt motor, so that the rotating part 703 is the 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 the external liquid and leaving residual liquid during sampling. After sampling is completed, the lifting motor drives the linear actuator to move the wiping cloth belt 701 upward, and then the cloth belt motor drives the rotating part 703 to move, making it become the absorbent paper part. Then the wiping cloth belt 701 moves downward and clings to the entire sample tube 50 to absorb the residual liquid on the sample tube 50. Finally, the wiping cloth belt 701 moves upward, and its downward extending part boosts the sample tube 50 out when the sample tube 50 slides. The extending 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 the sample tube 50, the end part and the body part of the sample tube 50 and part of the sample carrier frame 305 are exposed to the external liquid, reducing the liquid residue surface. At the same time, the sample carrier frame 305 protects the two side surfaces and the bottom surface 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 and prevent liquid from entering the sealed housing 10 through the sample port 61 for analysis. At the same time, since the rotating part 703 is provided with an inner support 702 with a lining, 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 carrier 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 body pollution.

[0085] The distribution of the plastic film part and the absorbent paper part is in the ABAB pattern, and the two form a complete strip. Through the drive of the cloth belt motor, the rotation setting of the plastic film part and the absorbent paper part on the rotating part 703 can be adjusted.

[0086] The setting of the linear actuator and the lifting motor can control the overall movement of the wiping mechanism 70 parallel to the direction of the sample moving mechanism 30, so that the two cooperate with each other.

[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, including the following steps:

[0088] When starting sampling, place the sealed housing 10 in the water body to be sampled in the hydrogeological monitoring well. Release the motor 204 to start driving the release disc 201 to rotate, so that the sampled sample tube 50 is rotated to the release position. The clamping mechanism 202 acts, and the clamping motor drives the clamping member 203 to retract, and its extension part releases the fixation of the sample tube 50. The sample tube 50 slides out along the lower side of the placement surface 21 under the action of gravity to the inlet end of the sample carrier frame 305 of the sample moving mechanism 30 and enters the liquid collection end 306;

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

[0090] After sampling is completed, close the liquid inlet valve. The sample moving mechanism 30 is started again. The synchronous belt assembly 303 drives the moving bracket 302 to slide reversely along the moving track 301, retracts the extended sample carrier frame 305 into the sealed housing 10, and then closes the sample port 61;

[0091] The sample moving mechanism 30 continues to move, sends the sample carrier frame 305 to near the receiving surface 41, controls the inclination angle of the sample carrier frame 305 to be the same as that of the receiving surface 41, and the sample tube 50 slides from the liquid collection end 306 under the action of gravity, enters the receiving frame 403 of the receiving surface 41 through the inlet end. Corresponding magnets are provided at the end of the sample tube 50 and the receiving frame 403, and the two are adsorbed and fixed;

[0092] The sample moving mechanism 30 returns to the initial position, and the above actions are repeated for the next sampling.

[0093] During the sampling process, the release mechanism 20, the sample moving mechanism 30 and the receiving mechanism 40 cooperate. The sample tube 50 is transferred orderly between the mechanisms by gravity, realizing automatic continuous sampling with high sampling efficiency. Moreover, at different depth positions, a single sample tube 50 samples once, and after continuous sampling multiple times, the problem of cross-contamination between water samples can also be avoided, ensuring the sample purity to the greatest extent, so that the collected samples can accurately reflect the true pollution status of groundwater at different positions and different depths in the mining area.

[0094] The above specific embodiments have further elaborated in detail the purpose, technical solution and beneficial effects of the present application. It should be understood that the above are only specific embodiments of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope 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; 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.

2. The sampling device for monitoring groundwater pollution in mining areas according to claim 1 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.

3. The sampling device for monitoring groundwater pollution in mining areas according to claim 1 is 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.

4. The sampling device for monitoring groundwater pollution in mining areas according to claim 1, 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, 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.

5. The sampling device for monitoring groundwater pollution in mining areas according to claim 4 is 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.

6. The sampling device for monitoring groundwater pollution in mining areas according to claim 5, 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.

7. The sampling device for monitoring groundwater pollution in mining areas according to claim 5, 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.

8. The sampling device for monitoring groundwater pollution in mining areas according to claim 7, 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.

9. 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 8; 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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