Surface water sampling device

Abstract

The utility model discloses a surface water sampling device, including the base of installation on the bank, the rotary water depth measuring mechanism and the rotary sampling mechanism of installation on the base, the controller of installation on the base, the rotary water depth measuring mechanism and the rotary sampling mechanism all include the rotary component of installation on the base, adjustable expansion board of installation on the rotary component, the lift control component of installation on adjustable expansion board, the rotary water depth measuring mechanism still includes the depth measurement component that receives the lift control component control, the rotary sampling mechanism still includes the sampling component that receives the lift control component control. The utility model discloses through the setting of rotary water depth measuring mechanism and rotary sampling mechanism, measures the depth to the water before sampling, prevents the rotary sampling mechanism and rotates to the sampling position and can suck the sampling of bottom mud, avoids the jamming damage of sampling equipment.

Description

Technical Field

[0001] This utility model relates to the field of surface water sampling technology, and specifically to a surface water sampling device. Background Technology

[0002] An automatic surface water environmental quality monitoring system is a system that uses automated instruments and equipment to monitor the water quality parameters of surface water (such as rivers, lakes, and reservoirs) in real time and continuously. It typically consists of monitoring stations, data acquisition and transmission equipment, a central control system, and a data analysis platform. It can automatically monitor multiple indicators such as water temperature, pH value, dissolved oxygen, turbidity, permanganate index, and ammonia nitrogen, and transmit the data to the management center in real time, providing a scientific basis for water environmental quality assessment, pollution early warning, and water resource management.

[0003] The primary equipment in an automatic surface water environmental quality monitoring system is used to collect representative water samples and transport them to the water sample pretreatment and analysis units. In surface water monitoring, the water depth and location of the sampling point are crucial to the representativeness of the water samples. It is necessary to follow national or industry standards (such as the Technical Specification for Surface Water Environmental Quality Monitoring and the Technical Requirements for Site Selection and Infrastructure Construction of Automatic Surface Water Quality Monitoring Stations) (HJ915.1—2024), and to scientifically deploy the sampling points based on water body characteristics and monitoring objectives. Specifically, the water intake should be adjustable according to water level changes, maintaining a fixed sampling depth while ensuring sufficient distance from the bottom of the water body to prevent bottom sediment and silt from affecting the water sample monitoring results. When the water depth at the sampling point is greater than 1 meter, the water intake of the sampling device should be located 0.5 meters below the water surface; when the water depth at the sampling point is between 0.5 and 1 meter, the water intake should be located at 1 / 2 of the water depth; when the water depth at the sampling point is less than 0.5 meters, the water intake should preferably be located at 1 / 2 of the water depth.

[0004] In practical use, the water sampling pipe of the water sampling device is usually fixed to a buoy, float, or floating vessel, which will cause the following problems: 1. The water sampling pipe is fixed and the depth of the water inlet underwater remains unchanged as the water level changes. This may cause the bottom silt to be pumped out when the water level is shallow, affecting the water sample and causing the sampling equipment to become blocked or damaged. 2. Sampling tubes are generally flexible tubes, and because they usually extend a certain distance, this part of the sampling tube will bend under the suction of the sampling pump, the buoyancy of the water, and the action of waves, causing the water sampling depth to deviate from the requirements and affecting the representativeness of the sampled water.

[0005] Therefore, there is an urgent need to provide a surface water sampling device that can precisely control the water sampling location, ensure data accuracy, and facilitate the adjustment of the water intake position of the sampling pipe to prevent clogging and damage to the sampling equipment. Utility Model Content

[0006] The purpose of this invention is to provide a surface water sampling device that solves the problems in the prior art where existing water sampling pipes are easily affected by water level, causing bottom silt to be sucked up, leading to blockage and damage to the sampling equipment, and the sampling pipes being flexible and prone to bending, causing the water sampling depth to deviate from the required water sampling depth and affecting the representativeness of the sampled water body.

[0007] To achieve the above objectives, this utility model proposes a surface water sampling device, including a base installed on the shore, a rotating depth measuring mechanism and a rotating sampling mechanism installed on the base, and a controller installed on the base; both the rotating depth measuring mechanism and the rotating sampling mechanism include a rotating component installed on the base, an adjustable telescopic plate installed on the rotating component, and a lifting control component installed on the adjustable telescopic plate.

[0008] Optionally, the rotating depth measuring mechanism also includes a depth measuring component controlled by a lifting control component.

[0009] Optionally, the rotary sampling mechanism may also include a sampling component controlled by a lifting control component.

[0010] Optionally, the rotating component in the rotating depth measuring mechanism drives the adjustable telescopic plate connected to it to rotate, and the adjustable telescopic plate drives the depth measuring component to measure the water level and water depth. Subsequently, the rotating component in the rotating sampling mechanism drives the adjustable telescopic plate connected to it to rotate, and the adjustable telescopic plate drives the sampling component to sample the water quality.

[0011] Optionally, the base is provided with a first mounting slot and a second mounting slot, and the rotating depth measuring mechanism and the rotating sampling mechanism are respectively installed on the first mounting slot and the second mounting slot.

[0012] Optionally, any plane parallel to the top surface of the base is designated as the first plane, and the orthographic projections of the two rotating components on the first plane coincide; the two rotating components rotate in opposite directions, and the orthographic projections of the rotation center points of the two rotating components on the first plane coincide.

[0013] Optionally, the rotating assembly includes an electric rotary table connected to a controller and an infrared transmitter mounted on an adjustable telescopic plate; the adjustable telescopic plate is mounted on the electric rotary table.

[0014] Optionally, the base is provided with an infrared receiver corresponding to the infrared transmitter, and the base is also provided with a clearance hole. The infrared receiver is connected to the controller; the infrared rays of the infrared transmitter are emitted to the infrared receiver through the clearance hole.

[0015] Optionally, the adjustable telescopic plate includes a telescopic main plate mounted on the rotating assembly, a telescopic groove disposed on the telescopic main plate, a telescopic plate movably mounted in the telescopic groove, and a locking bolt mounted on the telescopic main plate; the lifting control assembly is mounted on the end of the telescopic plate away from the rotating sampling mechanism.

[0016] Optionally, the lifting control assembly includes multiple mounting bases mounted on the side of the adjustable telescopic plate away from the rotating sampling mechanism, a control element movably mounted on the mounting base, and a control motor mounted on the mounting base and connected to the control element.

[0017] Optionally, the control motor drives the control component to rotate, and the control component drives the depth measuring component or the sampling component to move up and down.

[0018] Optionally, the multiple mounting bases in the rotating depth measurement mechanism are centrally symmetrically distributed with the depth measurement component as the center point; the multiple mounting bases in the rotating sampling mechanism are centrally symmetrically distributed with the sampling component as the center point.

[0019] Optionally, the control element is a rotating roller with a groove in which a friction rubber strip is installed.

[0020] Optionally, the control element is a gear, and racks that mesh with the control element are installed on the outer walls of both the depth measurement component and the sampling component.

[0021] Optionally, the depth measurement assembly includes a depth measuring tube mounted on an adjustable telescopic plate of a rotating depth measuring mechanism, a bottom-probing structure mounted at the bottom of the depth measuring tube, a float mounted inside the depth measuring tube, and an infrared ranging sensor mounted inside the depth measuring tube.

[0022] Optionally, the bottom-probing structure includes an abutment plate mounted on the depth measuring tube, a cap mounted on the bottom of the depth measuring tube, a movable plate movably mounted inside the depth measuring tube and located between the abutment plate and the cap, a bottom-probing column mounted on the movable plate, and a pressure sensor mounted on the bottom of the abutment plate.

[0023] Optionally, the depth measuring tube is provided with water inlet holes at equal intervals.

[0024] Optionally, a reflector is mounted on the top of the float, facing the infrared ranging sensor.

[0025] Optionally, the sampling assembly includes a sampling tube made of rigid material mounted on an adjustable telescopic plate of a rotary sampling mechanism, a sampling head mounted on the sampling tube, and a filter assembly mounted on the sampling head.

[0026] Optionally, the sampling head includes a connecting plate mounted on the sampling tube, a hollow sampling head mounted on the connecting plate, a first limiting plate disposed on the end of the sampling head facing the hollow sampling head, and a second limiting plate mounted on the connecting plate and connected to the first limiting plate.

[0027] Optionally, the connecting plate is located between the first limiting plate and the second limiting plate.

[0028] Optionally, the filtration assembly includes a filter ring installed at the bottom of the hollow sampling head, a second filter screen and a first filter screen installed at the top and bottom of the filter ring respectively, wherein the pore size of the first filter screen is larger than that of the second filter screen, and the water passes through the first filter screen and then through the second filter screen.

[0029] Compared with the prior art, the present invention provides a surface water sampling device, which has the following beneficial effects: This surface water sampling device, through the setting of a rotating water depth measuring mechanism and a rotating sampling mechanism, measures the water depth before water sampling. Based on the obtained water depth, the lifting control component in the rotating sampling mechanism drives the sampling component to move up and down, so that the water sampling pipe is at the water sampling depth required by the standard. This prevents the rotating sampling mechanism from sucking up the bottom silt after rotating to the sampling position, thus avoiding clogging and damage to the sampling equipment. In addition, the use of a water sampling pipe made of rigid materials ensures the accuracy of the sampling depth of the rotating sampling mechanism, thereby guaranteeing the representativeness of the sampled water. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0031] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0032] Figure 3 This is a structural schematic diagram of the base and the electric rod rotating platform of this utility model.

[0033] Figure 4 This is a utility model Figure 3 A magnified view of a portion of point A in the middle.

[0034] Figure 5 This is a structural schematic diagram of the adjustable telescopic plate of this utility model.

[0035] Figure 6 This is a cross-sectional view of the adjustable telescopic plate of this utility model.

[0036] Figure 7 This is a structural schematic diagram of the lifting control component of this utility model.

[0037] Figure 8 This is a schematic diagram of the depth measurement component of this utility model.

[0038] Figure 9 This is a structural schematic diagram of the control component of this utility model.

[0039] Figure 10 This is a schematic diagram of the sampling component in Embodiment 2 of this utility model.

[0040] The diagram identifies the following components: 1. Base; 11. First mounting slot; 12. Second mounting slot; 13. Infrared receiver; 14. Clearance hole; 2. Rotating depth measurement mechanism; 3. Rotating sampling mechanism; 4. Rotating assembly; 41. Electric rotary table; 43. Infrared transmitter; 5. Adjustable telescopic plate; 51. Telescopic main plate; 52. Telescopic slot; 53. Telescopic plate; 54. Locking bolt; 6. Lifting control assembly; 61. Mounting base; 62. Control component; 621. Groove; 622. Friction rubber strip; 63. Control motor; 64. Rack; 7. Depth measurement assembly. 71. Depth measuring tube; 711. Water inlet; 72. Bottom probing structure; 721. Abutment plate; 722. Cover; 723. Movable plate; 724. Bottom probing column; 725. Pressure sensor; 73. Float; 731. Reflector; 74. Infrared ranging sensor; 8. Sampling assembly; 81. Sampling tube; 82. Sampling head; 821. Connecting plate; 822. Sampling head; 823. First limiting plate; 824. Second limiting plate; 83. Filter assembly; 831. Filter ring; 832. Second filter screen; 833. First filter screen; 9. Controller. Detailed Implementation

[0041] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates the present invention. Numerous specific details are set forth in the description below to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] The surface water sampling device of this application can be used for sampling surface water and other similar applications. The following is a detailed description of the surface water sampling device.

[0043] Example 1 See appendix Figure 1 — Figure 9The diagram shows a preferred embodiment of a surface water sampling device according to this application. The surface water sampling device includes a base 1 mounted on the bank, a rotating depth measuring mechanism 2 and a rotating sampling mechanism 3 mounted on the base 1, and a controller 9 mounted on the base 1. Both the rotating depth measuring mechanism 2 and the rotating sampling mechanism 3 include a rotating component 4 mounted on the base 1, an adjustable telescopic plate 5 mounted on the rotating component 4, and a lifting control component 6 mounted on the adjustable telescopic plate 5.

[0044] In this application, when sampling surface water, the rotating component 4 in the rotating depth measuring mechanism 2 drives the adjustable telescopic plate 5 within the mechanism to rotate, which in turn moves the corresponding lifting control component 6, causing the depth measuring component 7 to rotate and move to a designated position. The depth measuring component 7 then measures the water depth. After the measurement is completed, the depth measuring mechanism 2 resets. Once reset, the controller 9 controls the rotating sampling mechanism 3 to begin operation, causing the sampling component 8 to sample the designated water depth at the same position. It should be noted that the entire sampling device is installed at a height above the highest water level on the shore. When not sampling, neither the rotating depth measuring mechanism 2 nor the rotating sampling mechanism 3 is in contact with the water.

[0045] See appendix Figure 1 — Figure 3 As shown in this application, the base 1 is provided with a first mounting groove 11 and a second mounting groove 12. The rotating water depth measuring mechanism 2 and the rotating sampling mechanism 3 are respectively installed on the first mounting groove 11 and the second mounting groove 12. Any plane parallel to the top surface of the base 1 is taken as the first plane, and the orthographic projections of the two rotating components 4 on the first plane coincide. The two rotating components 4 rotate in opposite directions, and the orthographic projections of the rotation center points of the two rotating components 4 on the first plane coincide.

[0046] This application provides mounting positions for the rotating depth measuring mechanism 2 and the rotating sampling mechanism 3 by setting the first mounting slot 11 and the second mounting slot 12; by limiting the coincidence of the rotation center points of the two rotating components 4, it ensures that the rotation centers of the two rotating components coincide, and ensures that they can be moved to the same sampling position when they are of the same length; by setting the rotation directions of the two rotating components 4 to be opposite, interference between the rotating depth measuring mechanism 2 and the rotating sampling mechanism 3 during rotation is avoided.

[0047] See appendix Figure 1 — Figure 6As shown in this application, the rotating assembly 4 includes an electric rotating table 41 connected to the controller 9, and an infrared transmitter 43 mounted on the telescopic main board 51 in the adjustable telescopic plate 5; the base 1 is provided with an infrared receiver 13 corresponding to the infrared transmitter 43, and the base 1 is also provided with a clearance hole 14, the infrared receiver 13 being connected to the controller 9; the infrared rays of the infrared transmitter 43 are emitted to the infrared receiver 13 through the clearance hole 14.

[0048] This application uses an electric rotary table 41 to drive the adjustable telescopic plate 5 to rotate, thereby causing the depth measurement component 7 and sampling component 8 on the adjustable telescopic plate 5 to rotate; the rotation angle of the electric rotary table 41 is detected by the setting of the infrared transmitter 43 and the infrared receiver 13; and the setting of the clearance hole 14 ensures that the infrared light emitted by the infrared transmitter 43 can be received by the infrared receiver 13.

[0049] See appendix Figure 5 and Figure 6 As shown in this application, the adjustable telescopic plate 5 includes a telescopic main plate 51 bolted to the electric rotary table 41, a telescopic groove 52 disposed on the telescopic main plate 51, a telescopic plate 53 movably mounted in the telescopic groove 52, and a locking bolt 54 mounted on the telescopic main plate 51; the lifting control assembly 6 is mounted on the end of the telescopic plate 53 away from the rotating sampling mechanism 3.

[0050] The present application provides installation space for the telescopic plate 53 by setting the telescopic groove 52, so that the telescopic plate 53 can move along the telescopic groove 52; the locking bolt 54 is used to fix the position of the telescopic plate 53; it should be noted that the telescopic plate 53 may be provided with scale lines.

[0051] See appendix Figure 5 — Figure 8 As shown in this application, the lifting control assembly 6 includes a plurality of mounting bases 61 mounted on the side of the adjustable telescopic plate 5 away from the rotating sampling mechanism 3, a control component 62 movably mounted on the mounting base 61, and a control motor 63 mounted on the mounting base 61 and connected to the control component 62.

[0052] The mounting base 61 is used to provide installation conditions for the control component 62; the control component 62 is used to drive the depth measurement component 7 or sampling component 8 connected thereto to move up and down; the control motor 63 is used as a power source to drive the control component 62 to rotate; it should be noted that the control motor 63 is a stepper motor and is electrically connected to the controller 9.

[0053] See appendix Figure 1 — Figure 8As shown in this application, the plurality of mounting bases 61 in the rotating depth measuring mechanism 2 are centrally symmetrically distributed with the depth measuring component 7 as the center point; the plurality of mounting bases 61 in the rotating sampling mechanism 3 are centrally symmetrically distributed with the sampling component 8 as the center point; the control motor 63 drives the control component 62 to rotate, and the control component 62 drives the depth measuring component 7 or the sampling component 8 in contact to move up and down.

[0054] This application achieves uniform force on the depth measurement component 7 or the sampling component 8 by centrally symmetrically distributing the mounting base 61 with the depth measurement component 7 as the center point.

[0055] See appendix Figure 7 and Figure 8 As shown in this application, the control component 62 is a rotating roller, which has a groove 621, and a friction rubber strip 622 is installed in the groove 621.

[0056] This application uses the groove 621 to drive the depth measurement component 7 or the sampling component 8 to move up and down. Specifically, the groove 621 in the lifting control component 6 used to drive the depth measurement component 7 to move up and down is adapted to the outer wall of the depth measurement tube 71, and the groove 621 in the lifting control component 6 used to drive the sampling component 8 to move up and down is adapted to the outer wall of the sampling tube 81. The rotation of the control component 62 drives the depth measurement component 7 or the sampling component 8 to move up and down.

[0057] See appendix Figure 8 As shown in this application, the depth measurement component 7 includes a depth measuring tube 71 installed on the adjustable telescopic plate 5 of the rotating water depth measuring mechanism 2, a bottom probing structure 72 installed at the bottom of the depth measuring tube 71, a float 73 installed inside the depth measuring tube 71, and an infrared ranging sensor 74 installed inside the depth measuring tube 71.

[0058] This application uses the depth measuring tube 71 to transmit the power of the rotation of the control component 62, so that the entire depth measuring assembly 7 can be raised and lowered; the bottom-probing structure 72 can be used to detect the riverbed; and with the float 73 and the infrared ranging sensor 74, the water depth can be measured.

[0059] See appendix Figure 8As shown in this application, the bottom-probing structure 72 includes an abutment plate 721 installed on the depth measuring tube 71, a cover 722 installed at the bottom of the depth measuring tube 71, a movable plate 723 movably installed inside the depth measuring tube 71 and located between the abutment plate 721 and the cover 722, a bottom-probing column 724 fixedly installed on the movable plate 723, and a pressure sensor 725 installed at the bottom of the abutment plate 721; the depth measuring tube 71 is provided with water inlet holes 711 at equal intervals; and the top of the float 73 is equipped with a reflector 731 facing the infrared ranging sensor 74.

[0060] This application provides installation space for the pressure sensor 725 through the abutment plate 721; provides installation space for the bottom probe 724 through the movable plate 723; the pressure sensor 725 works in conjunction with the bottom probe 724 to detect the bottom of the river; the water inlet 711 ensures that water can enter the depth measuring tube 71, allowing the float 73 to rise (this float 73 can be a float block); the reflector 731 can be a mirror, and this mirror is located above the liquid surface; it should be noted that the bottom of the bottom probe 724 can be fitted with a force-bearing plate through a threaded structure to enhance bottom detection. The force-bearing area at the bottom of the probe 724 is designed to prevent the pressure sensor 725 from failing to detect pressure changes when the probe 724 is inserted into the sludge. The top of the probe 724 contacts the pressure sensor 725, and a spring is provided between the abutment plate 721 and the movable plate 723. It should be noted that there is a gap between the top surface of the probe 724 and the pressure sensor 725. With the spring, this prevents the probe 724 from directly contacting the pressure sensor 725 after it enters the water body. It ensures that the top of the probe 724 only contacts the pressure sensor 725 after the probe 724 has contacted the bottom.

[0061] See appendix Figure 1 and Figure 9 As shown in this application, the sampling assembly 8 includes a sampling tube 81 made of rigid material mounted on the adjustable telescopic plate 5 of the rotary sampling mechanism 3, a sampling head 82 mounted on the sampling tube 81, and a filter assembly 83 mounted on the sampling head 82.

[0062] This application utilizes a sampling tube 81 to connect the sampling head 82 and the hose, reducing the impact of the sampling pump and waves on the sampling depth and ensuring the accuracy of the sampling depth. The sampling head 82 has a larger diameter than the sampling tube 81, resulting in a larger cross-sectional area. Through the continuity equation, the flow velocity in the sampling head 82 is lower than that in the sampling tube 81, thus reducing the suction force of the sampling pump. Furthermore, the larger cross-sectional area of ​​the sampling head 82 reduces the probability of sludge and other impurities in the water clogging it, thereby reducing the filtration pressure on the filter assembly 83. The filter assembly 83 allows for the filtration of the water.

[0063] See appendix Figure 9 As shown in this application, the sampling head 82 includes a connecting plate 821 mounted on the sampling tube 81, a hollow sampling head 822 mounted on the connecting plate 821, a first limiting plate 823 disposed on one end of the sampling head 82 facing the hollow sampling head 822, and a second limiting plate 824 mounted on the connecting plate 821 and connected to the first limiting plate 823; the connecting plate 821 is located between the first limiting plate 823 and the second limiting plate 824.

[0064] This application uses a connecting plate 821 to connect the sampling head 82 and the sampling tube 81, so that the hollow sampling head 82 and the sampling tube 81 can move synchronously; and uses a first limiting plate 823 and a second limiting plate 824 to enable the sampling tube 81 to drive the connecting plate 821 to move synchronously up and down.

[0065] See appendix Figure 9 As shown in this application, the filter assembly 83 includes a filter ring 831 installed at the bottom of the hollow sampling head 822, a second filter screen 832 and a first filter screen 833 respectively installed at the top and bottom of the filter ring 831. The pore size of the first filter screen 833 is larger than that of the second filter screen 832. The water passes through the first filter screen 833 and then through the second filter screen 832.

[0066] This application provides installation space for the first filter screen 833 and the second filter screen 832 by setting the filter ring 831.

[0067] See appendix Figure 1 — Figure 9 As shown, the working principle of this application is as follows: First, the staff adjusted the adjustable telescopic plate 5 in the rotating water depth measuring mechanism 2 and the adjustable telescopic plate 5 in the rotating sampling mechanism 3 to the same length, and connected the hose to the top of the sampling tube 81, while the other end of the hose was connected to the sampling pump. The specific operating steps for the adjustable telescopic plate 5 are as follows: Tighten the locking bolt 54, pull the telescopic plate 53 outward, and after pulling it to the required length, tighten the locking bolt 54 to fix it. Subsequently, the staff activated the entire device via controller 9 to begin sampling: The controller 9 controls the rotating depth measuring mechanism 2 to measure water depth. Specifically, the controller 9 controls the electric rotating platform 41 in the rotating depth measuring mechanism 2 to rotate. This electric rotating platform 41 drives the adjustable telescopic plate 5 in the rotating depth measuring mechanism 2 to rotate until the infrared receiver 13 receives the signal from the corresponding infrared transmitter 43 and sends the signal to the controller 9. The controller 9 then controls the electric rotating platform 41 to stop rotating. Subsequently, the controller motor 63 starts rotating, causing the depth measuring tube 71 to descend. The controller records the number of revolutions of the control motor 63. When the depth measuring tube 71 enters the water, water enters the depth measuring tube 71 through the inlet 711. At this time, the float 73 rises, and the infrared distance sensor 74 senses the change in distance and sends a signal back to the controller 9. The controller 9 receives the signal. After receiving the signal, the number of rotations A of the control motor 63 is recorded. Then, the control motor 63 continues to work, and the depth measuring tube 71 continues to descend until the pressure sensor 725 senses a pressure change, indicating that the bottom probe 724 has touched the bottom. The pressure sensor 725 sends a signal to the controller 9, and the controller 9 records the number of rotations B of the control motor 63 again. The water depth can be obtained by the difference between the two rotation numbers A and B and the minimum distance between the float 73 and the bottom of the bottom probe 724. Since the difference in installation position between the rotating water depth measuring mechanism 2 and the rotating sampling mechanism 3 is fixed, the number of rotations C required for the control motor 63 to move the rotating water depth measuring mechanism 2 to the same height as the rotating sampling mechanism 3 can be fixed. Thus, the number of rotations D required for the control motor 63 to contact the water body when the sampling tube 81 in the rotating sampling mechanism 3 is in contact can be calculated. Next, the rotating depth measuring mechanism 2 returns to its original position. The controller 9 compares the measured water depth with the standard specifications (which require manual data input). If the water depth is greater than 1 meter, it calculates the number of rotations E required for the control motor 63 to reach 0.5 meters below the water depth when the sampling tube 81 contacts the water. If the water depth is less than 1 meter, it calculates the number of rotations E required for the control motor 63 to reach 1 / 2 of the water depth when the sampling tube 81 contacts the water. The controller 9 controls the electric rotating platform 41 in the rotating sampling mechanism 3 to rotate. This electric rotating platform 41 drives the adjustable telescopic plate 5 in the rotating depth measuring mechanism 2 to rotate until the infrared receiver 13 receives the corresponding signal from the infrared transmitter 43 and sends the signal to the controller 9. The controller 9 then controls the electric rotating platform 41 to stop rotating. Next, the controller 9 controls the control motor 63 in the rotating sampling mechanism 3 to start rotating, moving the sampling head 82 to the specified water depth. Subsequently, the controller 9 controls the external sampling pump to start working and pump the water.

[0068] It should be noted that the initial position of the rotating depth measuring mechanism 2 can also be set at the same height as the rotating sampling mechanism 3; It should be noted that the diameter of the float 73 is fitted with the inner diameter of the depth measuring tube 71 with a clearance; the base 1 and the adjustable telescopic plate 5 can be made of steel; the controller 9 is a PLC controller with calculation, technical and timing functions and a touch screen.

[0069] Example 2 See appendix Figure 10 As shown, the difference between this embodiment and the above embodiment is that in this embodiment, the control component 62 is a gear, and the outer walls of the depth measuring tube 71 and the sampling tube 81 are both equipped with racks 64 that mesh with the control component 62.

[0070] In this embodiment, by setting the control element 62 as a gear and cooperating with the rack 64, the transmission ratio of the control element 62 and the pipeline movement remains unchanged, thereby improving the accuracy of the sampling depth data.

[0071] The above embodiments are illustrative of this application and are not intended to limit this application. Any simple modifications to this application are within the protection scope of this application.

Claims

1. A surface water sampling device, characterized in that, Includes a base (1) installed on the shore, a rotating depth measuring mechanism (2) and a rotating sampling mechanism (3) installed on the base (1), and a controller (9) installed on the base (1); The rotating depth measuring mechanism (2) and the rotating sampling mechanism (3) both include a rotating component (4) mounted on the base (1), an adjustable telescopic plate (5) mounted on the rotating component (4), and a lifting control component (6) mounted on the adjustable telescopic plate (5). The rotating depth measuring mechanism (2) also includes a depth measuring component (7) controlled by the lifting control component (6); The rotary sampling mechanism (3) also includes a sampling component (8) controlled by the lifting control component (6); The rotating component (4) in the rotating water depth measuring mechanism (2) drives the adjustable telescopic plate (5) connected to it to rotate. The adjustable telescopic plate (5) drives the depth measuring component (7) to measure the water depth. Then, the rotating component (4) in the rotating sampling mechanism (3) drives the adjustable telescopic plate (5) connected to it to rotate. The adjustable telescopic plate (5) drives the sampling component (8) to sample the water quality.

2. The surface water sampling device according to claim 1, characterized in that, The base (1) is provided with a first mounting groove (11) and a second mounting groove (12), and the rotating water depth measuring mechanism (2) and the rotating sampling mechanism (3) are respectively installed on the first mounting groove (11) and the second mounting groove (12); Let any plane parallel to the top surface of the base (1) be the first plane, and let the orthographic projections of the two rotating components (4) on the first plane coincide; The two rotating components (4) rotate in opposite directions, and the orthographic projections of the rotation center points of the two rotating components (4) on the first plane coincide.

3. The surface water sampling device according to claim 1, characterized in that, The rotating assembly (4) includes an electric rotary table (41) connected to a controller (9) and an infrared transmitter (43) mounted on an adjustable telescopic plate (5); the adjustable telescopic plate (5) is mounted on the electric rotary table (41); The base (1) is provided with an infrared receiver (13) corresponding to the infrared transmitter (43), and the base (1) is also provided with a clearance hole (14). The infrared receiver (13) is connected to the controller (9). The infrared radiation from the infrared transmitter (43) is emitted to the infrared receiver (13) through the clearance hole (14).

4. The surface water sampling device according to claim 1, characterized in that, The adjustable telescopic plate (5) includes a telescopic main plate (51) mounted on the rotating assembly (4), a telescopic groove (52) set on the telescopic main plate (51), a telescopic plate (53) movably mounted in the telescopic groove (52), and a locking bolt (54) mounted on the telescopic main plate (51); the lifting control assembly (6) is mounted on the end of the telescopic plate (53) away from the rotating sampling mechanism (3).

5. The surface water sampling device according to claim 1 or 4, characterized in that, The lifting control assembly (6) includes multiple mounting bases (61) mounted on the side of the adjustable telescopic plate (5) away from the rotating sampling mechanism (3), a control component (62) movably mounted on the mounting base (61), and a control motor (63) mounted on the mounting base (61) and connected to the control component (62).

6. The surface water sampling device according to claim 5, characterized in that, The multiple mounting bases (61) in the rotating depth measuring mechanism (2) are centrally symmetrically distributed with the depth measuring component (7) as the center point; The plurality of mounting bases (61) of the rotating sampling mechanism (3) are centrally symmetrically distributed with the sampling component (8) as the center point; The control motor (63) drives the control component (62) to rotate, and the control component (62) drives the depth measurement component (7) or the sampling component (8) to move up and down.

7. The surface water sampling device according to claim 5, characterized in that, The control component (62) is a rotating roller with a groove (621) on it, and a friction rubber strip (622) is installed in the groove (621). Alternatively, the control element (62) may be a gear, and the outer walls of the depth measuring component (7) and the sampling component (8) may be equipped with racks (64) that mesh with the control element (62).

8. The surface water sampling device according to claim 1 or 7, characterized in that, The depth measurement assembly (7) includes a depth measuring tube (71) mounted on the adjustable telescopic plate (5) of the rotating depth measuring mechanism (2), a bottom probing structure (72) mounted at the bottom of the depth measuring tube (71), a float (73) mounted inside the depth measuring tube (71), and an infrared ranging sensor (74) mounted inside the depth measuring tube (71). The sampling assembly (8) includes a sampling tube (81) made of rigid material mounted on the adjustable telescopic plate (5) of the rotary sampling mechanism (3), a sampling head (82) mounted on the sampling tube (81), and a filter assembly (83) mounted on the sampling head (82).

9. The surface water sampling device according to claim 8, characterized in that, The bottom-probing structure (72) includes an abutment plate (721) installed on the depth measuring tube (71), a cover (722) installed at the bottom of the depth measuring tube (71), a movable plate (723) installed inside the depth measuring tube (71) and located between the abutment plate (721) and the cover (722), a bottom-probing column (724) installed on the movable plate (723), and a pressure sensor (725) installed at the bottom of the abutment plate (721). The depth measuring tube (71) is provided with water inlet holes (711) at equal intervals. The top of the float (73) is equipped with a reflector (731) facing the infrared ranging sensor (74).

10. The surface water sampling device according to claim 8, characterized in that, The sampling head (82) includes a connecting plate (821) installed on the sampling tube (81), a hollow sampling head (822) installed on the connecting plate (821), a first limiting plate (823) disposed on the end of the sampling head (82) facing the hollow sampling head (822), and a second limiting plate (824) installed on the connecting plate (821 and connected to the first limiting plate (823). The connecting plate (821) is located between the first limiting plate (823) and the second limiting plate (824); The filter assembly (83) includes a filter ring (831) installed at the bottom of the hollow sampling head (822), a second filter screen (832) and a first filter screen (833) installed at the top and bottom of the filter ring (831) respectively. The pore size of the first filter screen (833) is larger than that of the second filter screen (832). The water passes through the first filter screen (833) and then through the second filter screen (832).

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