Multi-depth surface water collecting device
By designing a multi-depth surface water sampling device, which utilizes a winch and drive motor to raise and lower the sampling tube, combined with diversion pipelines and solenoid valves, multi-point and multi-depth water sample collection was achieved, overcoming the shortcomings of traditional devices and improving sampling efficiency and data accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 中国地质环境监测院(自然资源部地质灾害技术指导中心)
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional surface water sampling devices struggle to accurately collect samples at specific depths and cannot collect multiple samples at different depths simultaneously, resulting in incomplete and inaccurate data that fails to meet the needs of environmental monitoring and scientific research.
Design a multi-depth surface water sampling device, including a sample collection unit, a water surface carrier, and a control unit. It uses a winch and a drive motor to raise and lower the sampling tube, combined with a diversion pipeline and a solenoid valve, to achieve multi-point and multi-depth water sample collection. The sampling process is precisely controlled by the control unit.
It enables accurate sampling of different water layers, improves sampling efficiency, ensures the comprehensiveness and accuracy of sampling data, and meets the needs of environmental monitoring and scientific research.
Smart Images
Figure CN224136957U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surface water collection technology, specifically to a multi-depth surface water collection device. Background Technology
[0002] In fields such as environmental monitoring and water resource research, accurately collecting surface water samples at different depths is crucial for understanding the physical, chemical, and biological characteristics of water bodies. However, traditional surface water sampling methods and devices have many limitations. For example, common methods such as bucket sampling, sampling tubes, and plexiglass deep-water samplers are difficult to accurately collect samples at specific depths, nor can they collect samples from multiple different depths simultaneously. This results in incomplete and inaccurate data, failing to meet the needs of in-depth analysis and research of surface water.
[0003] While some existing technologies have improved the materials and shape of samplers, they are often not highly targeted and suffer from low sampling efficiency in practical applications, making it difficult to achieve efficient, accurate, and automated multi-depth, multi-point surface water sampling. Therefore, a new type of multi-depth surface water sampling device is needed to overcome the shortcomings of traditional sampling devices and better meet the requirements of surface water sampling in fields such as environmental monitoring and scientific research. Utility Model Content
[0004] To overcome the above-mentioned shortcomings in the prior art, this utility model provides a multi-depth surface water sampling device that is accurate in sampling depth and can achieve multi-point sampling.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A multi-depth surface water sampling device includes a sample collection unit, a water surface carrier, and a control unit. The sample collection unit is disposed at the water surface carrier and includes a support, a sampling tube, and several sampling bottles. A winch is rotatably connected to the support, and a drive motor is disposed between the support and the winch. The winch is used to wind up the sampling tube, and a counterweight is disposed at the water inlet end of the sampling tube.
[0007] The diversion pipeline has a main branch connected to the other end of the sampling tube via a rotary joint. The rotary joint is connected to the winch and located at the center of rotation of the winch. Each branch of the diversion pipeline is connected to each of the sampling bottles. Each branch is equipped with a solenoid valve. The main branch of the diversion pipeline is equipped with a drive pump.
[0008] The water surface carrier, the drive motor, each of the solenoid valves and the drive pump are electrically connected to the control unit, and the control unit is connected to the background controller or mobile terminal.
[0009] Preferably, the sampling tube is a PU tube.
[0010] In any of the above embodiments, it is preferred that the water inlet end of the sampling tube is provided with a filter cover, the filter cover including a frame and a filter screen, the frame being used to support the filter screen.
[0011] In any of the above embodiments, it is preferred that each of the sampling bottles is equipped with a liquid level sensor, and each of the liquid level sensors is electrically connected to the control unit.
[0012] In any of the above embodiments, it is preferred that the main branch of the diversion pipeline has a lowest point, and a discharge valve is provided at the lowest point, wherein the discharge valve is electrically connected to the control unit.
[0013] In any of the above embodiments, it is preferred that the drive motor and the winch are connected by a worm gear transmission, and the lead angle of the worm gear is smaller than the friction angle.
[0014] In any of the above embodiments, it is preferred that the winch is provided with a spiral guide groove on its circumference so that when the sampling tube is wound around the winch, the sampling tube is constrained within the spiral guide groove.
[0015] In any of the above embodiments, it is preferred that the height of the spiral guide groove is greater than the diameter of the sampling tube.
[0016] In any of the above schemes, a GPS positioning unit is preferably provided at the water surface carrier, and the GPS positioning unit is electrically connected to the control unit for recording the coordinates of the sampling points.
[0017] In any of the above solutions, it is preferred that the drive motor is a servo motor or a stepper motor.
[0018] This utility model's multi-depth surface water sampling device uses a winch and drive motor to raise and lower the sampling tube, allowing for flexible adjustment of the sampling depth and accurate collection of water samples from different water layers.
[0019] The water sample reaches each sampling point via a surface carrier. Through the diversion pipeline and solenoid valve, water samples from different points and depths can be stored in corresponding sampling bottles according to instructions, enabling multi-point sampling and improving sampling efficiency. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of an embodiment of the multi-depth surface water collection device of this utility model.
[0021] Figure 2 This is a schematic diagram of a preferred embodiment of the sample collection unit of the multi-depth surface water collection device of this utility model.
[0022] Figure 3This is a schematic diagram of a preferred embodiment of the multi-depth surface water collection device of this utility model, showing the combination of the filter cover and the sampling tube.
[0023] Figure 4 This is a circuit connection diagram of the multi-depth surface water collection device of this utility model.
[0024] Explanation of the labels in the diagram:
[0025] 101-Sampling bottle; 102-Solenoid valve; 103-Branch; 104-Main line; 105-Support; 106-Windshaft; 107-Sampling tube; 108-Drive pump; 109-Drain valve; 110-Water surface carrier; 111-Drive motor; 112-Mounting base; 113-Counterweight; 114-Fixed base; 115-Cap; 116-Plug; 117-First socket; 118-Second socket; 119-Frame; 120-Filter screen. Detailed Implementation
[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.
[0027] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] In the description of the various embodiments of this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0029] In the description of the various embodiments of this utility model, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0030] Example 1:
[0031] like Figure 1 As shown, the surface carrier 110 is used to install various functional components. During use, the sample collection unit can be carried to the sampling point via the surface carrier 110. To facilitate tracking the location of the surface carrier 110, a GPS positioning unit can be installed at the surface carrier 110. The surface carrier 110 can be made of EVA foam or fiberglass, and the propulsion system can be an electrically driven propeller.
[0032] like Figure 1 , 2 As shown, the sample collection unit is used to collect water samples at a specific depth. Specifically, the sample collection unit includes a support 105, a sampling tube 107, and a multi-dry sampling bottle 101. The support 105 is formed from profiles such as steel plates or aluminum alloy plates and is fixed to the water surface carrier 110. A winch 106 is used to wind up the sampling tube 107. One optional method for the winch 106 and the support 105 to be rotatably connected is as follows: a rotating shaft is rotatably connected to the support 105, and a mounting seat 112 is provided at the end of the rotating shaft. One end of the winch 106 is fixedly connected to the mounting seat 112 by bolts. A drive motor 111 located between the support 105 and the winch 106 is used to drive the winch 106 to rotate, thereby realizing the winding and unwinding of the sampling tube 107. A counterweight 113 located at the water inlet end of the sampling tube 107 stretches the sampling tube 107 under its own weight during use, thus ensuring that the sampling tube 107 remains vertical after entering the water. In use, since the diameter of the winch 106 is fixed, and the transmission ratio between the drive motor 111 and the winch 106 is known, when the drive motor 111 is a common motor, the release length (i.e., sampling depth) of the sampling tube 107 can be controlled by controlling the conduction time of the drive motor 111. When the drive motor 111 is a servo motor or a stepper motor, the release length (i.e., sampling depth) of the sampling tube 107 can be controlled by controlling the rotation speed of the drive motor 111.
[0033] like Figure 2As shown, in order to achieve a self-locking function between the power output end of the drive motor 111 and the power input end of the winch 106, and to prevent the winch 106 from rotating due to the weight of the counterweight 113 when it is too heavy, the drive motor 111 and the winch 106 are connected by a worm gear transmission, and the lead angle of the worm is smaller than the friction angle.
[0034] like Figure 2 As shown, the shunt pipeline is connected to the sampling tube 107 via a rotary joint. The shunt pipeline includes a main pipeline 104 and several branch pipelines 103. Specifically, the rotary joint has the following structure: a fixed base 114, a plug 116, and a pressure cap 115. The fixed base 114 is fixed to the winch 106 via a flange and coincides with the rotation center line of the winch 106. The fixed base 114 has a first insertion hole 117 and a second insertion hole 118 at its two ends, respectively. The plug 116 is inserted into the first insertion hole 117. A sealing gasket is provided between the outer wall of the plug 116 and the first insertion hole 117. A flange is provided on the side wall of the plug 116. The plug 116 is secured in the first insertion hole 117 by the pressure cap 115, so that the plug 116 will not come out of the first insertion hole 117. The other end of the sampling tube 107 is inserted into the second insertion hole 118. The other end of the plug 116 is connected to the main pipeline 104 of the shunt pipeline.
[0035] like Figure 2 As shown, each branch 103 of the diversion pipeline is connected to each sampling bottle 101, and each branch 103 is equipped with a solenoid valve 102. A drive pump 108 is located near the inlet of the main branch 104 of the diversion pipeline. In actual use, when the drive motor 111 controls the inlet end of the sampling tube 107 to descend to a designated depth, the drive pump 108 extracts water samples from a specific depth, and the water samples are transported to the designated sampling bottle 101 by opening the solenoid valve 102 at the designated sampling bottle 101. To facilitate the removal of the samples collected in the sampling bottle 101, the connection between each branch 103 and the sampling bottle 101 is made by inserting a rubber tube. During the sampling process, to remove air from the bottle, each sampling bottle 101 has a vent hole on its cap.
[0036] like Figure 4 As shown, the control unit is equipped with several I / O interfaces. The water surface carrier 110, drive motor 111, each solenoid valve 102, and drive pump 108 are electrically connected to the corresponding I / O interface of the control unit. The control unit is wirelessly connected to the backend controller or mobile terminal.
[0037] A specific app is pre-installed on the backend controller or mobile terminal. This app displays the status and operation buttons of the water surface carrier 110, drive motor 111, various solenoid valves 102, and drive pump 108. The backend controller or mobile terminal sends a signal to the control unit to bring the water surface carrier 110 to a designated position. Once the water surface carrier 110 reaches the designated position, based on the sampling depth, the user, through the app, first controls the drive motor 111 via the control unit to submerge the inlet end of the sampling tube 107 to the designated depth. Next, the control unit opens the designated solenoid valve 102 and starts the drive pump 108. The water sample at the specific depth is drawn by the drive pump 108 and transported through a diversion pipeline to the designated sampling bottle 101. Finally, the control unit sequentially closes the drive pump 108 and the solenoid valve 102, and restarts the drive motor 111 to bring the inlet end of the sampling tube 107 out of the water.
[0038] It is understood that the function of the control unit depends on the control unit hardware itself and the program installed within the control unit. It should be noted that the program is written based on the above description of the working principle of the multi-depth surface water sampling device. The specific assembly language used, the functions called, and the data debugging methods employed in the program are all prior art, and the program installed within the control unit of this application is not considered part of the content protected by this solution.
[0039] The control unit chip is a microcontroller or a programmable logic controller (PLC).
[0040] Example 2:
[0041] Based on Example 1, in order to prevent the sampling tube 107 from collapsing along the tube wall when it is wound up at the winch 106 and when water samples are extracted, the sampling tube 107 can be made of PU tube. PU tube has many advantages such as high strength, bending resistance and low specific gravity.
[0042] Example 3:
[0043] Based on Example 1 or 2, such as Figure 3 In the illustrated embodiment, as Figure 3 As shown, to prevent debris in the water from clogging the port of the sampling tube 107 when the driving pump 108 is drawing water samples, a filter cover is provided at the water inlet end of the sampling tube 107. The filter cover includes a frame 119 and a filter screen 120, with the frame 119 used to support the filter screen 120.
[0044] In practical use, the filter cover is inserted into the end of the sampling tube 107 via the frame 119. The presence of the frame 119 increases the filtration area, so when larger debris adheres to the filter screen 120, it will not cause too much resistance to the water flow into the sampling tube 107. In order to prevent interference with the turbidity measurement of the water sample, the pore size of the filter screen 120 is not less than 0.5 mm.
[0045] Example 5:
[0046] Based on any of the embodiments in Examples 1-4, such as Figure 1 As shown, in order to discharge the water sample accumulated in the diversion pipeline after changing the sampling point to avoid interfering with the next sampling, the main channel 104 of the diversion pipeline is provided with a lowest point, and a discharge valve 109 is provided at the lowest point. The discharge valve 109 is electrically connected to the control unit.
[0047] In practical use, after the current sampling is completed, the discharge valve 109 can be opened through the back-end controller or the APP on the mobile terminal. At this time, the water sample accumulated in the diversion pipeline is discharged through the discharge valve 109, thereby avoiding interference with the next sampling.
[0048] Example 6:
[0049] Based on any of the embodiments in Examples 1-5, such as Figure 2 As shown, in order to prevent the sampling tube 107 from overlapping when the winch 106 is winding up the sampling tube 107, a spiral guide groove is provided on the circumference of the winch 106. When the sampling tube 107 is wound around the winch 106, the sampling tube 107 is constrained in the spiral guide groove.
[0050] The height of the spiral guide groove is greater than the diameter of the sampling tube 107.
[0051] The above-described embodiments are merely preferred embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be covered within the protection scope of this utility model.
Claims
1. A multi-depth ground surface water harvesting device, characterized by, The system includes a sample collection unit, a water surface carrier (110), and a control unit. The sample collection unit is located on the water surface carrier (110) and includes a support (105), a sampling tube (107), and several sampling bottles (101). A winch (106) is rotatably connected to the support (105), and a drive motor (111) is provided between the support (105) and the winch (106). The winch (106) is used to wind up the sampling tube (107), and a counterweight (113) is provided at the water inlet end of the sampling tube (107). The main branch (104) of the diversion pipeline and the other end of the sampling tube (107) are connected by a rotary joint. The rotary joint is connected to the winch (106) and is located at the rotation center of the winch (106). Each branch (103) of the diversion pipeline is connected to each sampling bottle (101). Each branch (103) is equipped with a solenoid valve (102). The main branch (104) of the diversion pipeline is equipped with a drive pump (108). The surface carrier (110), drive motor (111), each solenoid valve (102) and drive pump (108) are electrically connected to the control unit, and the control unit is connected to the background controller or mobile terminal.
2. The multi-depth ground surface water harvesting device of claim 1, wherein, The sampling tube (107) is a PU tube.
3. The multi-depth ground water harvesting device as claimed in claim 1, wherein, The sampling tube (107) is equipped with a filter cover at the water inlet end. The filter cover includes a frame (119) and a filter screen (120). The frame (119) is used to support the filter screen (120).
4. The multiple-depth ground surface water harvesting device of claim 1, wherein, Each sampling bottle (101) is equipped with a liquid level sensor, and each liquid level sensor is electrically connected to the control unit.
5. The multi-depth ground water harvesting device as claimed in claim 1, wherein, The main branch (104) of the diversion pipeline is provided with a lowest point, and a discharge valve (109) is provided at the lowest point. The discharge valve (109) is electrically connected to the control unit.
6. The multiple-depth ground surface water harvesting device of claim 1, wherein, The drive motor (111) and the winch (106) are driven by a worm gear, and the lead angle of the worm gear is smaller than the friction angle.
7. The multi-depth ground water harvesting device as claimed in claim 1, wherein, A spiral guide groove is provided on the circumference of the winch (106). When the sampling tube (107) is wound around the winch (106), the sampling tube (107) is constrained in the spiral guide groove.
8. The multi-depth terrestrial water harvesting device of claim 7, wherein, The height of the spiral guide groove is greater than the diameter of the sampling tube (107).
9. The multiple-depth ground surface water harvesting device of claim 1, wherein, A GPS positioning unit is provided at the water surface carrier (110), and the GPS positioning unit is electrically connected to the control unit for recording the coordinates of the sampling point.
10. The multiple-depth ground surface water harvesting device of claim 1, wherein, The drive motor (111) is either a servo motor or a stepper motor.