Underground water quality monitoring and sampling device

Abstract

The invention relates to the technical field of water quality monitoring and sampling, and particularly discloses an underground water quality monitoring and sampling device which comprises a sampling box body, the bottom of the sampling box body is fixedly connected with universal wheels with brakes, and the universal wheels with the brakes are uniformly distributed at the bottom of the sampling box body; a freezing fan is fixedly connected to the center position of the bottom of the sampling box body, the freezing fan is communicated with a first placement barrel through a pipeline, the bottom of the first placement barrel is fixedly connected with the bottom of the inner wall of the sampling box body, and a second placement barrel is fixedly connected to the part, located on one side of the first placement barrel, of the inner wall of the sampling box body; a sampling device is fixedly connected to the part, away from one side of the second placement cylinder, of the bottom of the inner wall of the sampling box body, a first electric guide rail is fixedly connected to the top of the inner wall of the sampling box body, the underground water quality monitoring and sampling device is fixed by pushing the sampling box body with brake universal wheels to a sampling point, and the problem that traditional equipment is inconvenient to move is solved.

Description

Technical Field

[0001] This invention relates to the field of water quality monitoring and sampling devices, specifically a groundwater quality monitoring and sampling device. Background Technology

[0002] Groundwater quality monitoring is a core component of water resource protection. The accuracy of sampling directly affects the validity of monitoring data. It is necessary to ensure the representativeness, stability of composition, and absence of contamination of samples. Traditional sampling relies on manual operation, and incomplete cleaning of tools can easily lead to cross-contamination. Furthermore, it lacks constant temperature preservation capabilities, and water quality parameters are prone to change at high temperatures, with significant deviations in indicators such as dissolved oxygen and pH. At the same time, manual sampling and dispensing are inefficient, making it difficult to accurately control sampling at different depths. It is also inconvenient to move around in complex terrain, which limits the monitoring range and data reliability. With the improvement of environmental monitoring accuracy, higher requirements are placed on the pollution prevention, sample preservation, and automated operation of sampling devices.

[0003] It is prone to cross-contamination, and residual substances can cause large deviations in test data; there is no constant temperature preservation, and water quality parameters are prone to change; manual operation is cumbersome and inefficient; it is difficult to accurately control the sampling depth, and it has poor adaptability to complex terrain. Summary of the Invention

[0004] To achieve the above requirements, the present invention is implemented through the following technical solution: a groundwater quality monitoring and sampling device, comprising a sampling box, wherein a set of universal casters with brakes is fixedly connected to the bottom of the sampling box, and multiple sets of universal casters with brakes are evenly distributed at the bottom of the sampling box; a refrigeration fan is fixedly connected to the center of the bottom of the sampling box; the refrigeration fan is connected to a first placement cylinder through a pipe; the bottom of the first placement cylinder is fixedly connected to the bottom of the inner wall of the sampling box; a second placement cylinder is fixedly connected to the portion of the inner wall of the sampling box located on one side of the first placement cylinder; a sampling device is fixedly connected to the portion of the bottom of the inner wall of the sampling box located away from the second placement cylinder; a first electric guide rail is fixedly connected to the top of the inner wall of the sampling box; a moving device is fixedly connected to the slider at the bottom of the first electric guide rail; a collecting device is fixedly connected to one side of the inner wall of the sampling box; and a sealing device is fixedly connected to the portion of the inner wall of the sampling box located on the side of the sampling device. The first placement cylinder includes a first cylinder body. A fixed end of a second electric telescopic rod is connected through and fixedly connected to one side of the first cylinder body. Multiple sets of the second electric telescopic rod are evenly distributed on the first cylinder body. A first support bracket is fixedly connected to the movable end of the second electric telescopic rod. Insulation cotton is fixedly connected to the inner wall of the first cylinder body. A temperature sensor is fixedly connected to the inner wall of the first cylinder body above the insulation cotton. The bottom of the first cylinder body is connected to a refrigeration fan through a pipe. The bottom of the first cylinder body is fixedly connected to the bottom of the inner wall of the sampling chamber. Before sampling, the refrigeration fan is started, and the cold air generated is sent into the first cylinder body of the first placement cylinder through the pipe. The insulation cotton reduces the loss of cold air. The temperature sensor monitors the temperature inside the cylinder in real time to ensure that the first placement cylinder is in a suitable low-temperature environment, in preparation for subsequent sample preservation.

[0005] Preferably, the second placement cylinder includes a second cylinder body, a fixed end of a third electric telescopic rod is connected through and fixedly connected to one side of the second cylinder body, multiple sets of the third electric telescopic rod are provided and evenly distributed on the second cylinder body, a second support bracket is fixedly connected to the movable end of the third electric telescopic rod, and the bottom of the second cylinder body is fixedly connected to the bottom of the inner wall of the sampling box.

[0006] Preferably, the sampling device includes a sampling bracket, a first motor is fixedly connected to the inner wall of the sampling bracket, the drive shaft of the first motor passes through the sampling bracket and is fixedly connected to a wastewater tank, a first valve body is connected to one side of the wastewater tank through a pipe, a three-way pipe is connected to the top of the wastewater tank through a pipe, a receiving block is fixedly connected to one side of the top of the three-way pipe, multiple sets of receiving blocks are evenly distributed on the three-way pipe, a sample tray is sleeved and slidably connected to the portion of the three-way pipe above the receiving block, a placement groove is opened on the top of the sample tray, multiple sets of placement grooves are evenly distributed on the sample tray, a sample bottle is slidably connected to the inner wall of the placement groove, multiple sets of sample bottles are evenly distributed on the sample tray, and the bottom of the sampling bracket is fixedly connected to the bottom of the inner wall of the sampling box.

[0007] Preferably, the mobile device includes a mobile support, a second motor is fixedly connected to the inner wall of the mobile support, the drive shaft of the second motor passes through the mobile support and is fixedly connected to the fixed end of a fourth electric telescopic rod, the movable end of the fourth electric telescopic rod is fixedly connected to a vacuum suction cup, and a first air pump is connected to one side of the vacuum suction cup through a hose.

[0008] Preferably, the top of the movable bracket is fixedly connected to the slider at the bottom of the first electric guide rail, the bottom of the first air pump is fixedly connected to the sampling box through the bracket, the sample tray containing the sample bottle is pre-stored in the second cylinder of the second placement cylinder, and multiple sets of third electric telescopic rods push the second support bracket to clamp the sample tray to ensure stability. When ready to take a sample, the first electric guide rail drives the movable device to the second placement cylinder, the second motor adjusts the angle of the vacuum suction cup, the fourth electric telescopic rod pushes the suction cup down to fit the sample tray, the first air pump generates negative pressure adsorption, and then the third electric telescopic rod retracts, and the movable device moves the sample tray to the receiving block on the three-way tube of the sampling device.

[0009] Preferably, the collection device includes a collection cylinder, the bottom of which is connected to a first one-way valve via a pipe, the outlet of which is connected to a connecting housing via a pipe, the bottom of which is connected to a telescopic nozzle via a pipe, one side of which is connected to the outlet of a first water pump via a pipe, the inlet of which is connected to a first water tank via a pipe, the side of which is away from the first water pump via a pipe is connected to the outlet of a second water pump via a pipe, the inlet of which is connected to a collection mechanism via a first pipe, and the second water pump is fixedly connected to one side of the sampling housing via a bracket.

[0010] Preferably, one side of the collection cylinder is fixedly connected to the inner wall of the sampling box, and one side of the first water tank is fixedly connected to the inner wall of the sampling box.

[0011] Preferably, the telescopic nozzle includes a fixed cylinder body, with a fixed end of a sixth electric telescopic rod connected through and fixedly connected to one side of the top of the fixed cylinder body. Multiple sets of the sixth electric telescopic rods are evenly distributed on the fixed cylinder body. The movable end of the sixth electric telescopic rod is fixedly connected to the telescopic cylinder body. The top of the telescopic cylinder body extends into the interior of the fixed cylinder body and slides through and is slidably connected to the inner wall of the fixed cylinder body. A nozzle is connected through and fixedly connected to the bottom of the telescopic cylinder body. A sealing ring is provided between the inner wall of the fixed cylinder body and the telescopic cylinder body. The fixed cylinder body communicates with the water outlet of the connecting box. Activating the sixth electric telescopic rod pushes the telescopic cylinder body downwards along the fixed cylinder body, bringing the nozzle close to the top of the sample bottle of the sampling device. The sealing ring ensures a seal at the telescopic connection, preventing leakage of cleaning fluid.

[0012] Preferably, the collection mechanism includes a support block, a counterweight fixedly connected to the top of the support block, and a filter housing fixedly connected to the bottom of the support block. The filter housing has filter holes on one side, and multiple sets of filter holes are evenly distributed on the filter housing. The first pipe passes through the support block and is fixedly connected to the filter housing. The filter housing is connected to a second water pump through a connecting pipe. When the collection mechanism is placed in water at the target depth, the filter housing at the bottom of the support block directly contacts the water sample. The counterweight increases the weight of the collection mechanism, allowing it to sink stably to the specified depth and preventing the collection position from shifting due to water flow.

[0013] Preferably, the sealing device includes a sealing base, the top of which is fixedly connected to the fixed end of a seventh electric telescopic rod, the movable end of which is fixedly connected to a connecting bracket, the top of which is fixedly connected to a sealing machine, and a washer ring fixedly connected to the connecting bracket directly below the sealing machine via a spring. The sealing base is fixedly connected to the inner wall of the sampling chamber via the bracket. When a fully loaded sample bottle is moved to the bottom of the sealing device with the bottle opening facing upwards and aligned with the working position of the sealing device, the seventh electric telescopic rod is activated, and its movable end drives the connecting bracket to move downwards as a whole. During the downward movement, the washer ring at the bottom of the connecting bracket, connected by a spring, first contacts the edge of the bottle opening. As the seventh electric telescopic rod continues to extend, the spring is compressed to generate elastic pressure, and the washer ring tightly fits the bottle opening.

[0014] This invention provides a groundwater quality monitoring and sampling device. It has the following beneficial effects: 1. This groundwater quality monitoring and sampling device moves the sampling box to the sampling point and fixes it in place using casters with brakes, solving the problem of inconvenient movement of traditional equipment. Before sampling, a refrigeration fan is turned on, and cold air is sent into the first placement cylinder. Insulation cotton reduces cold loss, and temperature sensors control the temperature, laying a solid foundation for sample preservation. After the sampling device completes sampling, the first electric guide rail drives the moving device to grab the sample container and transfer it to the first placement cylinder for low-temperature storage. Temporary tools are placed in the second placement cylinder and can be quickly retrieved by the moving device when sampling multiple times. When transferring samples, the entire box can be moved by simply pushing it. The sealing device, combined with the low-temperature environment, ensures sample stability and improves the convenience and reliability of sampling and monitoring.

[0015] 2. Before sampling, the groundwater quality monitoring and sampling device starts a refrigeration fan to send cold air to the first placement cylinder, which is kept cold by insulation cotton and controlled by a temperature sensor. Inside the second placement cylinder, an electric telescopic rod pushes a support to clamp the sample tray, ensuring the stability of the sample bottle. The first electric guide rail drives the moving device to the second placement cylinder. The motor adjusts the angle of the vacuum suction cup, the telescopic rod pushes the suction cup to fit, and the air pump uses negative pressure to adsorb the sample tray. After the support is released, the moving device moves it to the sampling device. The pipe runs through the sample tray, and the sample is injected into the sample bottle through a three-way pipe. After sampling, the collection device sends waste liquid to clean the pipe, and the waste liquid is discharged. Finally, the moving device moves the sample tray to the first placement cylinder for low-temperature storage. The box can be pushed away for transfer, and the sealing device ensures stability.

[0016] 3. This groundwater quality monitoring and sampling device uses casters with brakes to move the sampling box to the sampling point and fix it in place, solving the problem of moving traditional equipment. Before sampling, a refrigeration fan sends cold air to the first placement cylinder, which is kept cold by insulation cotton and temperature controlled by a temperature sensor. Inside the second placement cylinder, a third electric telescopic rod clamps the sample tray to ensure the stability of the sample bottle. A first electric guide rail carries the moving device to the second placement cylinder. The sample tray is then transferred to the sampling device and fitted with a pipeline by the motor angle adjustment, the telescopic rod pushing the suction cup, and the air pump using negative pressure to absorb the sample. When collecting water samples at different depths, a second water pump and a collection mechanism draw water samples, which are then transferred through pipelines, a collection cylinder, and a one-way valve into the connecting box. A sixth electric telescopic rod drives the nozzle to align with the sample bottle. Before switching depths, the first water pump draws water from the water tank and flushes the pipeline through the telescopic nozzle. Waste liquid is discharged into a wastewater tank to prevent cross-contamination. After sampling, the motor drives the wastewater tank and sample tray to rotate, cleaning the residue group by group. Finally, the sample tray is transferred to the first placement cylinder for low-temperature storage. The box can be moved by pushing it, and a sealing device ensures stability.

[0017] 4. Before sampling, the groundwater quality monitoring and sampling device uses a refrigeration fan to deliver cold air to the first placement cylinder, insulation cotton to assist in keeping the sample cool, and a temperature sensor to control the temperature in real time to ensure a stable sample storage environment. The telescopic rod in the second placement cylinder clamps the sample tray to prevent the sample bottle from shaking. Then, the electric guide rail drives the moving device, which moves the sample tray to the sampling device and places it on the receiving block through motor angle adjustment, telescopic rod push suction cup, and air pump negative pressure adsorption. When collecting water samples, the collection mechanism is placed in the water body, and the counterweight helps it sink stably to a certain depth. The filter holes intercept silt and impurities, and the clean water sample is pumped into the collection cylinder by the water pump and then enters the connecting box through a one-way valve.

[0018] 5. After sample collection, the groundwater quality monitoring and sampling device uses a first motor to rotate the sample tray, moving the tray filled with sample bottles directly below the sealing device. The tray is aligned with the work position, ensuring the bottle openings are facing upwards. The seventh electric telescopic rod is then activated, moving the connecting bracket downwards. During this downward movement, the washer ring connected to the spring at the bottom of the bracket first contacts the edge of the bottle opening. As the telescopic rod continues to extend, the spring compression generates elastic pressure, causing the washer ring to tightly fit the bottle opening. This achieves pre-fixation and sealing buffering of the sample bottle, preventing bottle opening misalignment or uneven force during sealing, which could lead to incomplete sealing. The sealing machine then completes the bottle opening seal. Once sealing is complete, the seventh electric telescopic rod retracts and resets. The moving device then re-adsorbs the sample tray, transferring the sealed sample to the first placement cylinder. The second electric telescopic rod pushes the support bracket to clamp and fix the sample tray. Combined with the low-temperature environment of the refrigeration fan, this ensures stable preservation and storage of the sealed sample. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the groundwater quality monitoring and sampling device of the present invention; Figure 2 This is a schematic diagram of the top internal structure of the sampling box of the present invention; Figure 3 This is a schematic diagram of the mobile device structure of the present invention; Figure 4 This is a schematic diagram of the internal bottom structure of the sampling box of the present invention; Figure 5 This is a schematic diagram of the first placement cylinder structure of the present invention; Figure 6 This is a schematic diagram of the second placement cylinder structure of the present invention; Figure 7 This is a schematic diagram of the sampling device of the present invention; Figure 8 This is a schematic diagram of the collection device structure of the present invention; Figure 9 This is a schematic diagram of the connection structure of the collection device of the present invention; Figure 10 This is a schematic diagram of the telescopic nozzle structure of the present invention; Figure 11 This is a schematic diagram of the collection mechanism structure of the present invention; Figure 12 This is a schematic diagram of the sealing device structure of the present invention.

[0020] In the diagram: 1. Sampling box; 2. Casters with brakes; 3. Refrigeration fan; 4. First placement cylinder; 41. First cylinder body; 42. Second electric telescopic rod; 43. Insulation cotton; 44. Temperature sensor; 45. First support bracket; 5. Second placement cylinder; 51. Second cylinder body; 52. Third electric telescopic rod; 53. Second support bracket; 6. Sampling device; 61. Sampling bracket; 62. First motor; 63. Wastewater tank; 64. First valve body; 65. T-connector; 66. Sample tray; 67. Sample bottle; 68. Receiving block; 69. Placement slot; 7. First electric guide rail; 8. Moving device; 81. Moving bracket; 82. Second motor; 83. Fourth electric telescopic rod. 84. Retractable rod; 85. Vacuum suction cup; 96. First air pump; 97. Collection device; 98. Collection cylinder; 99. First one-way valve; 90. Connecting box; 91. Telescopic nozzle; 92. Fixed cylinder body; 93. Sixth electric telescopic rod; 94. Telescopic cylinder body; 95. Nozzle; 96. Sealing ring; 97. First water pump; 98. First water tank; 99. Second water pump; 90. First pipeline; 91. Collection mechanism; 992. Support block; 993. Counterweight block; 994. Filter housing; 995. Filter hole; 10. Sealing device; 101. Sealing base; 102. Seventh electric telescopic rod; 103. Connecting bracket; 104. Sealing machine; 105. Washer ring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] For the first embodiment, please refer to... Figures 1-4This invention provides a technical solution that solves the problem of difficulty in transferring samples after sampling: a groundwater quality monitoring sampling device includes a sampling box 1, with multiple sets of braked casters 2 fixedly connected to the bottom of the sampling box 1 and evenly distributed at the bottom of the sampling box 1. A refrigeration fan 3 is fixedly connected to the center of the bottom of the sampling box 1. The refrigeration fan 3 is connected to a first placement cylinder 4 through a pipe. The bottom of the first placement cylinder 4 is fixedly connected to the bottom of the inner wall of the sampling box 1. A second placement cylinder 5 is fixedly connected to the part of the inner wall of the sampling box 1 located on one side of the first placement cylinder 4. A sampling device 6 is fixedly connected to the part of the bottom of the inner wall of the sampling box 1 located away from the second placement cylinder 5. A first electric guide rail 7 is fixedly connected to the top of the inner wall of the sampling box 1. A sliding device 8 is fixedly connected to the slider at the bottom of the first electric guide rail 7. A collection device 9 is fixedly connected to one side of the inner wall of the sampling box 1. A sealing device 10 is fixedly connected to the part of the inner wall of the sampling box 1 located on one side of the sampling device 6. The first placement cylinder 4 includes a first cylinder body 41. A fixed end of a second electric telescopic rod 42 is connected through and fixedly connected to one side of the first cylinder body 41. Multiple sets of the second electric telescopic rod 42 are evenly distributed on the first cylinder body 41. A first support bracket 45 is fixedly connected to the movable end of the second electric telescopic rod 42. Insulation cotton 43 is fixedly connected to the inner wall of the first cylinder body 41. A temperature sensor 44 is fixedly connected to the inner wall of the first cylinder body 41 above the insulation cotton 43. The bottom of the first cylinder body 41 is connected to the refrigeration fan 3 through a pipe. The bottom of the first cylinder body 41 is fixedly connected to the bottom of the inner wall of the sampling box 1.

[0023] In use, the sampling box 1 is pushed, and the device is moved to the groundwater sampling point and fixed by the casters 2 with brakes, solving the problem of inconvenient movement of traditional sampling equipment. Before sampling, the refrigeration fan 3 is turned on, and the cold air generated is sent into the first cylinder 41 of the first placement cylinder 4 through the pipe. The insulation cotton 43 reduces the loss of cold air, and the temperature sensor 44 monitors the temperature inside the cylinder in real time to ensure that the first placement cylinder 4 is in a suitable low-temperature environment, in preparation for subsequent sample preservation. After the groundwater sampling is completed by the sampling device 6, the first electric guide rail 7 is activated, and its slider drives the moving device 8 to move to the sampling device 6 to grab the sample container after sampling. Then, the moving device 8, driven by the first electric guide rail 7, moves the sample container to the sampling device 6. The container is transferred to the first placement cylinder 4 for low-temperature storage. The sampling tools are temporarily placed in the second placement cylinder 5. When multiple samplings are required, the next sampling tool can be retrieved through the cooperation of the moving device 8 of the second placement cylinder 5 and the first electric guide rail 7. When the sample needs to be transferred, the entire sampling box 1 can be moved by simply pushing it. The sealing device 10 can seal the sample. Combined with the low-temperature environment of the first placement cylinder 4, it ensures the stability of the sample during the transfer process. This device effectively solves the problem of the sample being difficult to transfer after sampling through the moving device and the movable box structure. At the same time, it also has the function of sample preservation, which improves the convenience and reliability of groundwater sampling and monitoring.

[0024] Second embodiment, please refer to Figures 1-7 Based on the first embodiment, the present invention provides a technical solution: the second placement cylinder 5 includes a second cylinder body 51, a fixed end of a third electric telescopic rod 52 is connected through and fixedly connected to one side of the second cylinder body 51, multiple sets of the third electric telescopic rod 52 are provided and evenly distributed on the second cylinder body 51, the movable end of the third electric telescopic rod 52 is fixedly connected to a second support bracket 53, and the bottom of the second cylinder body 51 is fixedly connected to the bottom of the inner wall of the sampling box 1.

[0025] The sampling device 6 includes a sampling bracket 61. A first motor 62 is fixedly connected to the inner wall of the sampling bracket 61. The drive shaft of the first motor 62 passes through the sampling bracket 61 and is fixedly connected to a wastewater tank 63. A first valve body 64 is connected to one side of the wastewater tank 63 through a pipe. A three-way pipe 65 is connected to the top of the wastewater tank 63 through a pipe. A receiving block 68 is fixedly connected to one side of the top of the three-way pipe 65. Multiple sets of receiving blocks 68 are evenly distributed on the three-way pipe 65. A sample tray 66 is sleeved and slidably connected to the part of the three-way pipe 65 above the receiving block 68. A placement groove 69 is opened on the top of the sample tray 66. Multiple sets of placement grooves 69 are evenly distributed on the sample tray 66. A sample bottle 67 is slidably connected to the inner wall of the placement groove 69. Multiple sets of sample bottles 67 are evenly distributed on the sample tray 66. The bottom of the sampling bracket 61 is fixedly connected to the bottom of the inner wall of the sampling box 1.

[0026] The mobile device 8 includes a mobile support 81. A second motor 82 is fixedly connected to the inner wall of the mobile support 81. The drive shaft of the second motor 82 passes through the mobile support 81 and is fixedly connected to the fixed end of a fourth electric telescopic rod 83. A vacuum suction cup 84 is fixedly connected to the movable end of the fourth electric telescopic rod 83. A first air pump 85 is connected to one side of the vacuum suction cup 84 through a hose.

[0027] The top of the movable bracket 81 is fixedly connected to the slider at the bottom of the first electric guide rail 7, and the bottom of the first air pump 85 is fixedly connected to the sampling box 1 through the bracket.

[0028] Before sampling, a sample tray 66 containing sample vials 67 is pre-placed inside the second cylinder 51 of the second placement cylinder 5. Multiple sets of third electric telescopic rods 52 push the second support bracket 53 to clamp the sample tray, ensuring stability. When ready to sample, the first electric guide rail 7 moves the moving device 8 to the second placement cylinder 5. The second motor 82 adjusts the angle of the vacuum suction cup 84, and the fourth electric telescopic rod 83 pushes the suction cup down to adhere to the sample tray. The first air pump 85 generates negative pressure adsorption. Subsequently, the third electric telescopic rod 52 retracts, and the moving device 8 transfers the sample tray to the three-way tube 65 of the sampling device 6. At the receiving block 68, the pipe passes through the sample tray 66 and is fitted with it. The receiving block 68 supports the sample tray, and the sample bottle 67 is placed in the placement groove 69. During sampling, the sample is injected into the corresponding sample bottle 67 through the three-way pipe 65. After sampling and cleaning, the waste liquid is sent to the wastewater tank 63 through the collection device 9 into the three-way pipe 65. The first motor 62 drives the wastewater tank 63 to rotate, which synchronously drives the sample tray 66 to rotate. Each rotation completes the cleaning of a set of pipes, avoiding sample residue contamination. The waste liquid is discharged through the first valve body 64 for treatment, solving the problem of pipe residue and improving sampling efficiency and sample accuracy.

[0029] Third embodiment, please refer to Figures 1-10 Based on the second embodiment, the present invention provides a technical solution that solves the problem of sample contamination when collecting samples at different depths: the collection device 9 includes a collection cylinder 91, the bottom of the collection cylinder 91 is connected to a first one-way valve 92 through a pipe, the outlet of the first one-way valve 92 is connected to a connecting box 93 through a pipe, the bottom of the connecting box 93 is connected to a telescopic nozzle 94 through a pipe, one side of the collection cylinder 91 is connected to the outlet of a first water pump 95 through a pipe, the inlet of the first water pump 95 is connected to a first water tank 96 through a pipe, the side of the collection cylinder 91 away from the first water pump 95 is connected to the outlet of a second water pump 97 through a pipe, the inlet of the second water pump 97 is connected to a collection mechanism 99 through a first pipe 98, and the second water pump 97 is fixedly connected to one side of the sampling box 1 through a bracket.

[0030] One side of the collection cylinder 91 is fixedly connected to the inner wall of the sampling box 1, and one side of the first water tank 96 is fixedly connected to the inner wall of the sampling box 1.

[0031] The telescopic nozzle 94 includes a fixed cylinder 941. A fixed end of a sixth electric telescopic rod 942 is connected through and fixedly connected to one side of the top of the fixed cylinder 941. Multiple sets of the sixth electric telescopic rod 942 are evenly distributed on the fixed cylinder 941. A telescopic cylinder 943 is fixedly connected to the movable end of the sixth electric telescopic rod 942. The top of the telescopic cylinder 943 extends into the interior of the fixed cylinder 941 and slides through and connects to the inner wall of the fixed cylinder 941. A nozzle 944 is connected through and fixedly connected to the bottom of the telescopic cylinder 943. A sealing ring 945 is provided between the inner wall of the fixed cylinder 941 and the telescopic cylinder 943. The fixed cylinder 941 is connected to the water outlet of the connecting box 93.

[0032] When collecting groundwater samples at different depths, the second water pump 97 and collection mechanism 99 are started first. The water sample from the target depth enters the collection cylinder 91 through the first pipe 98, and then flows into the connecting box 93 through the first one-way valve 92. At this time, the sixth electric telescopic rod 942 is started, pushing the telescopic cylinder 943 down along the fixed cylinder 941, so that the nozzle 944 is accurately aligned with the sample bottle 67. The sealing ring 945 ensures that the telescopic joint is sealed and leak-proof. The water sample is injected into the corresponding sample bottle through the telescopic nozzle 94. Before switching depths, the first water pump 95 needs to be started to draw clean water from the first water tank 96 and send it into the collection cylinder 91. A one-way valve 92 connects to the connecting box 93 and the telescopic nozzle 94. The sixth electric telescopic rod 942 adjusts the nozzle to be close to the interface of the three-way pipe 65. Clean water rinses the inner wall of the pipeline to remove any residue from the previous sample. Waste liquid flows into the wastewater tank 63 for centralized treatment. If samples are collected at other depths, the above process is repeated: the new depth water sample is extracted by the collection mechanism 99 and the second water pump 97, and introduced into the connecting box through the collection cylinder 91 and the one-way valve. The new sample bottle is then injected by the telescopic nozzle. Targeted pipeline cleaning is performed before each switch. Relying on the one-way valve for directional flow and independent cleaning process, cross-contamination of samples from different depths is avoided, improving the accuracy of sample collection.

[0033] For the fourth embodiment, please refer to [link / reference]. Figures 1-11 Based on the third embodiment, the present invention provides a technical solution to prevent impurities in the collected samples: the collection mechanism 99 includes a support block 991, a counterweight block 992 is fixedly connected to the top of the support block 991, a filter housing 993 is fixedly connected to the bottom of the support block 991, a filter hole 994 is opened on one side of the filter housing 993, multiple sets of filter holes 994 are provided and evenly distributed on the filter housing 993, a first pipe 98 passes through the support block 991 and is fixedly connected to the filter housing 993, and the filter housing 993 is connected to the second water pump 97 through a connecting pipe.

[0034] When collecting groundwater samples at different depths, the collection mechanism 99 is placed into the target water body. The counterweight 992 on top of the support block 991 increases the weight, allowing the mechanism to sink stably to the designated depth. This prevents the water flow from causing the collection position to shift, ensuring accurate sampling depth. The filter shell 993 at the bottom of the support block 991 directly contacts the water sample. After starting the second water pump 97, the water sample flows into the filter shell under negative pressure. Solid impurities such as silt and aquatic plant debris in the water are intercepted by multiple sets of evenly distributed filter holes 994 on the surface of the filter shell. Only clean water sample enters the collection cylinder 91 through the connecting pipe. Subsequently, the process in the third embodiment is followed: the water sample is introduced into an independent sealed cavity for storage through the first one-way valve 92. Before switching depths, the first water pump 95 delivers clean water to flush the pipe through the telescopic nozzle 94. Waste liquid flows into the wastewater tank 63 for treatment. With the counterweight for stable positioning and the original anti-cross-contamination structure, this not only avoids cross-contamination between samples at different depths but also eliminates interference from impurities, improving the accuracy and reliability of groundwater sampling.

[0035] For the fifth embodiment, please refer to... Figures 1-12 Based on the fourth embodiment, the present invention provides a technical solution that solves the problem of sealing and storing samples after collection: the sealing device 10 includes a sealing base 101, the top of the sealing base 101 is fixedly connected to the fixed end of the seventh electric telescopic rod 102, the movable end of the seventh electric telescopic rod 102 is fixedly connected to the connecting bracket 103, the top of the connecting bracket 103 is fixedly connected to the sealing machine 104, and the connecting bracket 103 is located directly below the sealing machine 104 and is fixedly connected to the washer ring 105 by a spring. The sealing base 101 is fixedly connected to the inner wall of the sampling box 1 by the bracket.

[0036] In use, after groundwater samples from different depths are pre-filtered and collected to prevent cross-contamination, the first motor 62 drives the sample tray 66 to rotate, moving the full sample bottle 67 to directly below the sealing device 10 with the bottle opening facing upwards and aligned with the working position of the sealing device. The seventh electric telescopic rod 102 is then activated, and its movable end drives the connecting bracket 103 to move downwards. During the downward movement, the washer ring 105 at the bottom of the connecting bracket 103, connected by a spring, first contacts the edge of the bottle opening of the sample bottle 67. As the seventh electric telescopic rod 102 continues to extend, the spring... The spring is compressed to generate elastic pressure, and the washer ring 105 fits tightly against the bottle mouth, forming a pre-fixation and sealing buffer for the sample bottle, avoiding the bottle mouth from shifting or uneven force during subsequent sealing, which would lead to poor sealing. After sealing, the seventh electric telescopic rod 102 retracts and resets, driving the sealing machine 104 and the washer ring 105 to detach from the sample bottle. Then, the moving device 8 adsorbs the sample tray 66 again, transferring the sealed sample to the first placement cylinder 4. The second electric telescopic rod 42 pushes the first support bracket 45 to clamp and fix it, and the low temperature environment of the refrigeration fan 3 achieves stable storage after sealing.

[0037] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A groundwater quality monitoring and sampling device, characterized in that: The sample includes a sampling box (1), with a fixedly connected universal caster wheel (2) with brakes at the bottom. Multiple sets of the universal caster wheel (2) are evenly distributed at the bottom of the sampling box (1). A refrigeration fan (3) is fixedly connected to the center of the bottom of the sampling box (1). The refrigeration fan (3) is connected to a first placement cylinder (4) via a pipe. The bottom of the first placement cylinder (4) is fixedly connected to the bottom of the inner wall of the sampling box (1). The portion of the inner wall of the sampling box (1) located on one side of the first placement cylinder (4) is fixed. A second placement cylinder (5) is connected to the sampling box (1). A sampling device (6) is fixedly connected to the bottom of the inner wall of the sampling box (1) on the side away from the second placement cylinder (5). A first electric guide rail (7) is fixedly connected to the top of the inner wall of the sampling box (1). A moving device (8) is fixedly connected to the slider at the bottom of the first electric guide rail (7). A collection device (9) is fixedly connected to one side of the inner wall of the sampling box (1). A sealing device (10) is fixedly connected to the part of the inner wall of the sampling box (1) located on the side of the sampling device (6). The first placement cylinder (4) includes a first cylinder body (41). A fixed end of a second electric telescopic rod (42) is connected through and fixedly connected to one side of the first cylinder body (41). Multiple sets of the second electric telescopic rod (42) are provided and evenly distributed on the first cylinder body (41). A first support bracket (45) is fixedly connected to the movable end of the second electric telescopic rod (42). Insulation cotton (43) is fixedly connected to the inner wall of the first cylinder body (41). A temperature sensor (44) is fixedly connected to the inner wall of the first cylinder body (41) above the insulation cotton (43). The bottom of the first cylinder body (41) is connected to the refrigeration fan (3) through a pipe. The bottom of the first cylinder body (41) is fixedly connected to the bottom of the inner wall of the sampling box (1).

2. The groundwater quality monitoring and sampling device according to claim 1, characterized in that: The second placement cylinder (5) includes a second cylinder body (51), and a fixed end of a third electric telescopic rod (52) is connected through and fixedly connected to one side of the second cylinder body (51). The third electric telescopic rod (52) is provided in multiple sets and evenly distributed on the second cylinder body (51). The movable end of the third electric telescopic rod (52) is fixedly connected to a second support bracket (53). The bottom of the second cylinder body (51) is fixedly connected to the bottom of the inner wall of the sampling box (1).

3. The groundwater quality monitoring and sampling device according to claim 1, characterized in that: The sampling device (6) includes a sampling bracket (61). A first motor (62) is fixedly connected to the inner wall of the sampling bracket (61). The drive shaft of the first motor (62) passes through the sampling bracket (61) and is fixedly connected to a wastewater tank (63). A first valve body (64) is connected to one side of the wastewater tank (63) through a pipe. A three-way pipe (65) is connected to the top of the wastewater tank (63) through a pipe. A receiving block (68) is fixedly connected to one side of the top of the three-way pipe (65). There are multiple sets of receiving blocks (68) evenly distributed. A sample tray (66) is fitted and slidably connected to the three-way pipe (65) above the receiving block (68). A placement groove (69) is opened on the top of the sample tray (66). There are multiple sets of placement grooves (69) evenly distributed on the sample tray (66). A sample bottle (67) is slidably connected to the inner wall of the placement groove (69). There are multiple sets of sample bottles (67) evenly distributed on the sample tray (66). The bottom of the sampling bracket (61) is fixedly connected to the bottom of the inner wall of the sampling box (1).

4. The groundwater quality monitoring and sampling device according to claim 1, characterized in that: The mobile device (8) includes a mobile bracket (81), a second motor (82) is fixedly connected to the inner wall of the mobile bracket (81), the drive shaft of the second motor (82) passes through the mobile bracket (81) and is fixedly connected to the fixed end of the fourth electric telescopic rod (83), the movable end of the fourth electric telescopic rod (83) is fixedly connected to a vacuum suction cup (84), and a first air pump (85) is connected to one side of the vacuum suction cup (84) through a hose.

5. The groundwater quality monitoring and sampling device according to claim 4, characterized in that: The top of the movable bracket (81) is fixedly connected to the slider at the bottom of the first electric guide rail (7), and the bottom of the first air pump (85) is fixedly connected to the sampling box (1) through the bracket.

6. The groundwater quality monitoring and sampling device according to claim 1, characterized in that: The collection device (9) includes a collection cylinder (91), the bottom of which is connected to a first one-way valve (92) via a pipe, the outlet of which is connected to a connecting box (93) via a pipe, the bottom of which is connected to a telescopic nozzle (94) via a pipe, the outlet of a first water pump (95) is connected to one side of the collection cylinder (91) via a pipe, the inlet of which is connected to a first water tank (96) via a pipe, the outlet of a second water pump (97) is connected to the side of the collection cylinder (91) away from the first water pump (95) via a pipe, the inlet of which is connected to a collection mechanism (99) via a first pipe (98), and the second water pump (97) is fixedly connected to one side of the sampling box (1) via a bracket.

7. The groundwater quality monitoring and sampling device according to claim 6, characterized in that: One side of the collection tube (91) is fixedly connected to the inner wall of the sampling box (1), and one side of the first water tank (96) is fixedly connected to the inner wall of the sampling box (1).

8. The groundwater quality monitoring and sampling device according to claim 6, characterized in that: The telescopic nozzle (94) includes a fixed cylinder (941), a fixed end of a sixth electric telescopic rod (942) is fixedly connected through and fixed to one side of the top of the fixed cylinder (941), multiple sets of the sixth electric telescopic rod (942) are provided and evenly distributed on the fixed cylinder (941), the movable end of the sixth electric telescopic rod (942) is fixedly connected to a telescopic cylinder (943), the top of the telescopic cylinder (943) extends into the interior of the fixed cylinder (941) and slides in connection with the inner wall of the fixed cylinder (941), a nozzle (944) is fixedly connected through and fixed to the bottom of the telescopic cylinder (943), a sealing ring (945) is provided between the inner wall of the fixed cylinder (941) and the telescopic cylinder (943), and the fixed cylinder (941) is connected to the outlet of the connecting box (93).

9. A groundwater quality monitoring and sampling device according to claim 6, characterized in that: The collection mechanism (99) includes a support block (991), a counterweight block (992) is fixedly connected to the top of the support block (991), a filter housing (993) is fixedly connected to the bottom of the support block (991), a filter hole (994) is opened on one side of the filter housing (993), and multiple sets of filter holes (994) are provided and evenly distributed on the filter housing (993). The first pipe (98) passes through the support block (991) and is fixedly connected to the filter housing (993). The filter housing (993) is connected to the second water pump (97) through a connecting pipe.

10. A groundwater quality monitoring and sampling device according to claim 6, characterized in that: The sealing device (10) includes a sealing base (101), the top of which is fixedly connected to the fixed end of a seventh electric telescopic rod (102), the movable end of which is fixedly connected to a connecting bracket (103), the top of which is fixedly connected to a sealing machine (104), and the connecting bracket (103) located directly below the sealing machine (104) is fixedly connected to a washer ring (105) by a spring. The sealing base (101) is fixedly connected to the inner wall of the sampling box (1) by the bracket.

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