Automatic suction sampling device for surface water sampling station
By designing an automatic suction sampling device that includes a suction pipe, a pump pipe, an extension installation pipe, a preliminary filter screen, and spiral blades, the problems of inconvenient movement, low suction efficiency, and poor stability of traditional devices have been solved, achieving efficient and stable surface water sampling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN GREEN EN ENVIRONMENTAL PROTECTION TECH
- Filing Date
- 2026-03-20
- Publication Date
- 2026-05-12
Smart Images
Figure CN122016407A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of surface water sampling technology, specifically to an automatic suction sampling device for surface water sampling stations. Background Technology
[0002] In surface water sampling, accurate, efficient, and stable water sample acquisition is crucial for numerous fields such as environmental monitoring and water quality assessment. Surface water environmental monitoring is a core means of assessing ecological health and the effectiveness of pollution control, and the accuracy of its sampling data directly affects the reliability of subsequent analyses.
[0003] Traditional surface water sampling stations often lack a convenient and easy-to-operate structure, making it difficult to quickly reach different sampling locations, resulting in low sampling flexibility and efficiency. High fluid transmission resistance leads to low suction efficiency, preventing water samples from accurately entering the suction cylinder. Furthermore, the lack of a preliminary filtration device allows impurities to easily enter the suction pump and sampling container, affecting equipment lifespan and water purity, thus impacting the accuracy of subsequent analysis and testing data. When the suction cylinder is deep into the water, localized poor water flow or impurity accumulation can affect sampling uniformity. Precise adjustment of the suction cylinder's vertical position to achieve sampling at different depths is difficult, and in turbulent water or complex terrain environments, the lack of a stable support structure makes the device prone to swaying or tilting, affecting sampling reliability and safety. Therefore, corresponding technical solutions are needed to address these issues. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides an automatic suction sampling device for surface water sampling stations, thus solving its technical problems.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: an automatic suction sampling device for a surface water sampling station, comprising a sampling device vehicle body, an automatic suction pump, a lifting adjustment mechanism and a support adjustment mechanism, wherein a movable support structure is fixedly provided at the bottom of the sampling device vehicle body, and a push rod frame is fixedly provided near the rear end of the upper part of the sampling device vehicle body;
[0006] The automatic suction pump is installed on the upper part of the sampling device vehicle body. The front end of the automatic suction pump is equipped with a suction pump body, and the front end of the suction pump body is connected to a suction pipe. The side end of the suction pump body is connected to a water pump pipe. An extension installation pipe is installed at the upper end of the water pump pipe. The extension installation pipe increases the connection flexibility of the water pump pipe and facilitates installation and adjustment according to actual sampling needs. A water pumping extension hose is installed at the lower end of the suction pipe. The use of the water pumping extension hose allows the suction cylinder to penetrate into water bodies of different depths and positions more flexibly, expanding the sampling range. The lower end of the water pumping extension hose is equipped with a suction cylinder.
[0007] The support adjustment mechanism is slidably connected to the outside of the suction cylinder, and the lifting adjustment mechanism is fixedly located at the front of the upper end of the sampling device vehicle body and connected to the lower end of the external water pumping extension hose.
[0008] Preferably, a through hole is provided at the top of the suction cylinder, and the lower end of the water-pushing extension hose is fixedly disposed at the upper end of the through hole;
[0009] The bottom of the suction cylinder is provided with an installation groove, and a preliminary filter screen is installed at the lower end of the installation groove;
[0010] The through-hole is used to allow water to enter above the extension hose, and the mounting groove is used for quick installation and removal of the preliminary filter screen, which is used to filter out large impurities.
[0011] Preferably, a crossbar is fixedly distributed in the middle of the inner sidewall of the suction cylinder, a bearing ring is fixedly provided in the middle of the crossbar, a movable rod is rotatably connected in the middle of the bearing ring, and a spiral blade is fixedly distributed on the outer sidewall of the movable rod, the spiral blade having a structure with a smaller upper part and a larger lower part.
[0012] Multiple crossbars are used to fix the bearing ring in the middle of the inner side. The bearing ring is used to rotate and support the movable rod. The movable rod is used to fix the spiral blades up and down. The spiral blades with a small upper part and a large lower part are used to form a turbine structure for high-efficiency suction.
[0013] Preferably, the lifting and adjusting mechanism includes a bracket, an electric telescopic device one, a transition plate, a fixed cross plate, and an electric telescopic device two. The bracket is an L-shaped plate structure fixedly installed at the upper front corner of the sampling device vehicle body, and a reinforcing plate is fixedly installed at the lower end of the bracket.
[0014] The electric telescopic device is fixedly installed at the upper front of the bracket. A telescopic rod is connected through the lower part of the electric telescopic device. One end of the adapter plate is fixedly installed at the lower end of the telescopic rod. The other end of the adapter plate is fixedly installed at the lower end of the outside of the water pumping extension hose. Support rods are fixedly distributed around the adapter plate and the suction cylinder.
[0015] The reinforcing plate provides sufficient strength and stability to the L-shaped plate structure of the support, enabling it to withstand the weight of the electric telescopic device and other components, as well as various forces during the sampling process. The electric telescopic device and telescopic rod are used to raise and lower the adapter plate to adjust the lower end of the pumping extension hose and the height of the suction cylinder. Multiple sets of support rods provide stable support between the adapter plate and the suction cylinder.
[0016] Preferably, a support plate is fixedly provided at the bottom of the bracket, a connecting plate is fixedly distributed at the front end of the support plate, a limiting ring is fixedly distributed at the front end of the connecting plate, and the limiting ring is located outside the telescopic rod.
[0017] The limiting ring is located on the outside of the telescopic rod and plays an important role in limiting and protecting it. During the extension and retraction of the telescopic rod, the limiting ring can prevent the telescopic rod from shifting or shaking, ensuring the stability and accuracy of the adjustment. At the same time, it protects the telescopic rod from damage caused by external factors and extends its service life. The connecting plate and the support plate are used to fix the limiting ring to the bottom of the bracket.
[0018] Preferably, the support adjustment mechanism includes a slip ring, a connecting rod, a support frame plate and a base plate. A limiting plate is fixedly provided on the outer side wall of the suction cylinder. The slip ring is slidably connected to the outside of the suction cylinder and limitedly connected to the outer end of the limiting plate. The support frame plate is a frame-like structure with a smaller top and a larger bottom and is fixedly distributed on the outer side wall of the slip ring. The base plate is fixedly provided at the bottom of the support frame plate, and a pointed structure is fixedly distributed at the bottom of the base plate.
[0019] The limiting plate is used to limit the support of the slip ring and stabilize its up-and-down sliding adjustment. The support frame plate with a small upper part and a large lower part is used to stabilize the bottom plate downwards. The bottom plate and the multiple sets of pointed structures at the lower end provide stable and non-slip support for the bottom.
[0020] Preferably, the fixed horizontal plate is fixed to the side of the bracket, the second electric telescopic device is fixed to the upper end of the fixed horizontal plate, the lower end of the second electric telescopic device is connected to the second telescopic rod, the middle of the adapter plate is fixed to the middle of the adapter plate, and the second telescopic rod is connected to the inside of the limit cylinder.
[0021] The adapter rod is a bent tube structure fixed to the outer wall of the slip ring, and the adapter rod is fixed to the bottom of the telescopic rod two;
[0022] The electric telescopic device 2 and the telescopic rod 2 are used to raise and lower the transition rod of the curved pipe structure, thereby driving the slip ring to adjust up and down. The limiting cylinder is used to safely limit the sliding of the telescopic rod 2.
[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0024] (1) The sampling device vehicle serves as the carrying platform for the entire device, providing a stable installation foundation for the automatic suction pump and the suction pump body. Its fixed bottom mobile support structure and the fixed push rod frame near the rear end make the device easy to move and operate, enabling it to quickly reach different sampling locations, thus improving the flexibility and efficiency of sampling. The overall layout is reasonable, and the functions of each part are clear and cooperate with each other, providing a basic guarantee for efficient and stable surface water sampling.
[0025] (2) By connecting the automatic suction pump and the suction pipe and the pump water pipe connected to the suction pump body, the suction process is made smoother and more efficient, reducing the resistance of the fluid in the transmission process, improving the suction efficiency, ensuring that the water sample can accurately enter the suction cylinder, and the impurities can be initially filtered through the bottom preliminary filter screen to prevent them from entering the suction pump and subsequent sampling containers, protecting the equipment, extending the service life of the equipment, and also improving the purity of the sampled water, providing more accurate data for subsequent analysis and testing.
[0026] (3) By setting a spiral rotating structure inside the suction cylinder, when the suction cylinder goes deep into the water, the spiral blades will rotate under the impact of the water flow, which can generate a certain stirring and guiding effect, so that the surrounding water enters the suction cylinder more evenly, avoiding the situation where the sampling is affected by local water flow obstruction or impurity accumulation; at the same time, the spiral blades with the upper small and lower large structure can better adapt to the water environment at different depths. During the process of going deep into the water, as the water pressure and water flow conditions change, the spiral blades can guide the water sample into the suction cylinder more quickly and effectively, improving the sampling efficiency.
[0027] (4) By using the lifting and adjusting mechanism set at the upper front of the sampling device vehicle body and near the lower end of the external water extension hose, the vertical position of the suction cylinder can be precisely adjusted by controlling the extension and retraction of the telescopic rod through the electric telescopic device one, thereby realizing sampling of water bodies at different depths; and by using the electric telescopic device two and the components below, the lifting and adjusting mechanism of the support adjustment mechanism can be automatically controlled, so that the slip ring can slide stably outside the suction cylinder without detaching from the suction cylinder. When the suction cylinder is deep into the water body, the support adjustment mechanism can adjust its position with the sliding of the slip ring, so that the support frame plate and the bottom plate can better contact the bottom or support surface. The support frame plate with a frame structure that is smaller at the top and larger at the bottom can provide more stable support, and the pointed structure helps the bottom plate to be inserted into the bottom or support surface more easily, increasing the stability of the device. In some water bodies with rapid currents or complex terrain, this stable support structure can prevent the device from shaking or tilting, ensuring the smooth progress of sampling and improving the reliability and safety of sampling. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall side front upper view structure of the present invention;
[0029] Figure 2 This is a schematic diagram of the overall side-rear lower view structure of the present invention;
[0030] Figure 3 This is a schematic diagram of the overall structure of the invention from the upper front view on the other side;
[0031] Figure 4 This is a schematic diagram of the lifting adjustment mechanism, support adjustment mechanism, and suction cylinder structure of the present invention;
[0032] Figure 5 This is a schematic diagram of the support adjustment mechanism and suction cylinder structure from below according to the present invention;
[0033] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;
[0034] Figure 7 This is a schematic diagram of the internal structure of the suction cylinder of the present invention.
[0035] In the diagram: 1. Sampling device vehicle body; 11. Mobile support structure; 12. Push rod frame;
[0036] 2. Automatic suction pump; 21. Suction pump body; 22. Suction pipe; 23. Pump water pipe; 231. Extension mounting pipe; 24. Water extension hose; 25. Suction cylinder; 251. Mounting groove; 252. Preliminary filter screen; 253. Through hole; 26. Crossbar; 261. Bearing ring; 262. Movable rod; 263. Spiral blade;
[0037] 3. Lifting and adjusting mechanism; 31. Bracket; 311. Reinforcing plate; 32. Electric telescopic device one; 321. Telescopic rod one; 33. Limiting ring; 331. Connecting plate; 332. Support plate; 34. Adapter plate; 341. Support rod; 35. Fixed cross plate; 36. Electric telescopic device two; 361. Telescopic rod two; 362. Limiting cylinder;
[0038] 4. Support adjustment mechanism; 41. Slip ring; 42. Limiting plate; 43. Adapter rod; 44. Support frame plate; 45. Base plate; 46. Tip structure. Detailed Implementation
[0039] 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.
[0040] Please see Figures 1-7 The present invention provides a technical solution: an automatic suction sampling device for a surface water sampling station, comprising a sampling device vehicle body 1, an automatic suction pump 2, a lifting adjustment mechanism 3 and a support adjustment mechanism 4, a movable support structure 11 fixedly provided at the bottom of the sampling device vehicle body 1, and a push rod frame 12 fixedly provided near the rear end of the upper part of the sampling device vehicle body 1.
[0041] An automatic suction pump 2 is installed on the upper end of the sampling device vehicle body 1. A suction pump body 21 is installed at the front end of the automatic suction pump 2. A suction pipe 22 is connected to the front end of the suction pump body 21. A pump water pipe 23 is connected to the side end of the suction pump body 21. An extension installation pipe 231 is installed at the upper end of the pump water pipe 23. The extension installation pipe 231 increases the connection flexibility of the pump water pipe 23, making it easy to install and adjust according to actual sampling needs. A water suction extension hose 24 is installed at the lower end of the suction pipe 22. The use of the water suction extension hose 24 allows the suction cylinder 25 to penetrate into water bodies of different depths and positions more flexibly, expanding the sampling range. The suction cylinder 25 is located at the lower end of the water suction extension hose 24.
[0042] The support adjustment mechanism 4 is slidably connected to the outside of the suction cylinder 25, and the lifting adjustment mechanism 3 is fixedly installed at the front of the upper end of the sampling device vehicle body 1 and connected to the lower end of the outside of the water pumping extension hose 24.
[0043] In a further improvement, a through hole 253 is provided above the suction cylinder 25, and the lower end of the water pumping extension hose 24 is fixedly located at the upper end of the through hole 253.
[0044] The bottom of the suction cylinder 25 is provided with an installation groove 251, and a preliminary filter screen 252 is installed at the lower end of the installation groove 251.
[0045] The through hole 253 is used to allow water to enter above the extension hose 24, and the mounting groove 251 is used to quickly install and remove the preliminary filter screen 252, which is used to filter large impurities.
[0046] Further improvements include a crossbar 26 fixedly distributed in the middle of the inner sidewall of the suction cylinder 25, a bearing ring 261 fixedly provided in the middle of the crossbar 26, a movable rod 262 rotatably connected in the middle of the bearing ring 261, and a spiral blade 263 fixedly distributed on the outer sidewall of the movable rod 262, the spiral blade 263 having a structure that is smaller at the top and larger at the bottom.
[0047] Multiple sets of crossbars 26 are used to fix the bearing ring 261 inward to the middle. The bearing ring 261 is used to rotate and support the movable rod 262. The movable rod 262 is used to fix the spiral blades 263 up and down. The spiral blades 263 with the upper small and lower large structure are used to form a turbine structure for high-efficiency suction.
[0048] Further improvements include a lifting adjustment mechanism 3 comprising a bracket 31, an electric telescopic device 32, a transition plate 34, a fixed cross plate 35, and an electric telescopic device 36. The bracket 31 is an L-shaped plate structure fixedly installed at the upper front corner of the sampling device vehicle body 1, and a reinforcing plate 311 is fixedly installed at the lower end of the bracket 31.
[0049] An electric telescopic device 32 is fixedly installed at the upper front of the bracket 31. A telescopic rod 321 is connected through the lower part of the electric telescopic device 32. One end of the adapter plate 34 is fixedly installed at the lower end of the telescopic rod 321. The other end of the adapter plate 34 is fixedly installed at the lower end of the outside of the water pumping extension hose 24. Support rods 341 are fixedly distributed around the adapter plate 34 and the suction cylinder 25.
[0050] The reinforcing plate 311 gives the L-shaped plate structure of the support 31 sufficient strength and stability to withstand the weight of the electric telescopic device and other components, as well as various forces during the sampling process. The electric telescopic device 32 and the telescopic rod 321 are used to raise and lower the adapter plate 34 so as to adjust the lower end of the pumping extension hose 24 and the height of the suction cylinder 25. Multiple sets of support rods 341 provide stable support between the adapter plate 34 and the suction cylinder 25.
[0051] Further improvements include a support plate 332 fixedly provided at the bottom of the bracket 31, a connecting plate 331 fixedly distributed at the front end of the support plate 332, and a limiting ring 33 fixedly distributed at the front end of the connecting plate 331, with the limiting ring 33 located outside the telescopic rod 321.
[0052] The limiting ring 33 is located outside the telescopic rod 321, playing an important role in limiting and protecting it. During the extension and retraction of the telescopic rod 321, the limiting ring 33 can prevent the telescopic rod 321 from shifting or shaking, ensuring the stability and accuracy of the adjustment. At the same time, it also protects the telescopic rod 321 from damage by external factors and extends its service life. The connecting plate 331 and the support plate 332 are used to fix the limiting ring 33 to the bottom of the bracket 31.
[0053] Further improvements include a support adjustment mechanism 4 comprising a slip ring 41, a connecting rod 43, a support frame plate 44, and a base plate 45. A limiting plate 42 is fixedly provided on the outer side wall of the suction cylinder 25. The slip ring 41 is slidably connected to the outside of the suction cylinder 25 and is limitedly connected to the outer end of the limiting plate 42. The support frame plate 44 is a frame-like structure with a smaller upper part and a larger lower part and is fixedly distributed on the outer side wall of the slip ring 41. The base plate 45 is fixedly provided on the bottom of the support frame plate 44, and a pointed structure 46 is fixedly distributed on the bottom of the base plate 45.
[0054] The limiting plate 42 is used to limit the support of the slip ring 41 and stabilize its up-and-down sliding adjustment. The support frame plate 44 with a frame structure that is smaller at the top and larger at the bottom is used to stabilize the bottom plate 45 downwards. The bottom plate 45 and the multiple sets of pointed structures 46 at the bottom end provide stable and non-slip support for the bottom of the water.
[0055] Specifically, the fixed horizontal plate 35 is fixed to the side of the bracket 31, the electric telescopic device 2 36 is fixed to the upper end of the fixed horizontal plate 35, the lower end of the electric telescopic device 2 36 is connected to the telescopic rod 2 361, the middle of the adapter plate 34 is fixed to the limiting cylinder 362, and the telescopic rod 2 361 is connected to the inside of the limiting cylinder 362.
[0056] The adapter rod 43 is a bent tube structure fixed on the outer side wall of the slip ring 41, and the adapter rod 43 is fixed to the bottom of the telescopic rod 361.
[0057] The electric telescopic device 2 36 and the telescopic rod 2 361 are used to raise and lower the adapter rod 43 of the curved pipe structure, thereby driving the slip ring 41 to adjust up and down. The limiting cylinder 362 is used to safely limit the sliding of the telescopic rod 2 361.
[0058] Working principle: Push the push rod frame 12 near the rear end of the upper part of the sampling device vehicle 1, and use the movable support structure 11 fixed at the bottom of the vehicle to move the device to the target sampling location, adjust the position of the device, and ensure that the sampling device vehicle 1 is stably parked.
[0059] Start the electric telescopic device 32 in the lifting adjustment mechanism 3 to control the telescopic rod 321 to extend downward; the telescopic rod 321 drives the adapter plate 34 to move downward, the adapter plate 34 is connected to the suction cylinder 25 through the support rod 341, and the vertical position of the suction cylinder 25 is adjusted synchronously so that its lower end approaches or penetrates the water body.
[0060] Start the electric telescopic device 2 36 to control the telescopic rod 2 361 to extend downward; the telescopic rod 2 361 is safely limited by the limiting cylinder 362, and at the same time drives the adapter rod 43 to move downward; the adapter rod 43 drives the slip ring 41 to slide downward along the outer wall of the suction cylinder 25 until the support frame plate 44 and the bottom plate 45 contact the bottom of the water or the support surface; confirm that the pointed structure 46 at the bottom of the bottom plate 45 is inserted into the bottom of the water to provide stable support;
[0061] When the automatic suction pump 2 is started, the water body filters out large impurities through the preliminary filter screen 252 at the bottom of the suction cylinder 25, and then enters the water extension hose 24 through the through hole 253. The water extension hose 24 transports the water body to the pump water pipe 23, and then enters the automatic suction pump 2 through the suction pump body 21 and the suction pipe 22 to complete the water suction.
[0062] When the suction cylinder 25 is submerged in the water, the water flow impacts the spiral blades 263 as they rotate with the water flow. The spiral blades 263 generate a stirring and guiding effect, so that the surrounding water enters the suction cylinder 25 evenly.
[0063] Turn off automatic suction pump 2 to stop suction;
[0064] Start the electric telescopic device 32, control the telescopic rod 321 to retract upward, drive the adapter plate 34 and the suction cylinder 25 to move upward, and lift them above the water surface;
[0065] Start the electric telescopic device 236, control the telescopic rod 2361 to retract upward, drive the adapter rod 43 and slip ring 41 to move upward, and retract the support frame plate 44 and the bottom plate 45.
[0066] Once the sampling task is complete, prepare to move to the next sampling point or end the operation.
[0067] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended technical solutions rather than the foregoing description, and thus all changes falling within the meaning and scope of equivalent elements of the technical solutions are intended to be included within the present invention.
[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An automatic suction sampling device for a surface water sampling station, comprising a sampling device vehicle body (1), an automatic suction pump (2), a lifting adjustment mechanism (3), and a support adjustment mechanism (4), characterized in that: A movable support structure (11) is fixedly provided at the bottom of the sampling device vehicle body (1), and a push rod frame (12) is fixedly provided near the rear end of the sampling device vehicle body (1). The automatic suction pump (2) is installed on the upper end of the sampling device vehicle body (1). The front end of the automatic suction pump (2) is equipped with a suction pump body (21). The front end of the suction pump body (21) is connected to a suction pipe (22). The side end of the suction pump body (21) is connected to a pump water pipe (23). The upper end of the pump water pipe (23) is equipped with an extension installation pipe (231). The lower end of the suction pipe (22) is equipped with a water pumping extension hose (24). The lower end of the water pumping extension hose (24) is equipped with a suction cylinder (25). The support adjustment mechanism (4) is slidably connected to the outside of the suction cylinder (25), and the lifting adjustment mechanism (3) is fixedly installed at the front of the upper end of the sampling device vehicle body (1) and connected to the lower end of the outside of the water pumping extension hose (24).
2. The automatic suction sampling device for a surface water sampling station according to claim 1, characterized in that: The suction cylinder (25) has a through hole (253) at its top, and the lower end of the water pumping extension hose (24) is fixed at the upper end of the through hole (253). The bottom of the suction cylinder (25) is provided with an installation groove (251), and a preliminary filter screen (252) is installed at the lower end of the installation groove (251).
3. An automatic suction sampling device for a surface water sampling station according to claim 2, characterized in that: A crossbar (26) is fixedly distributed in the middle of the inner side wall of the suction cylinder (25). A bearing ring (261) is fixedly provided in the middle of the crossbar (26). A movable rod (262) is rotatably connected in the middle of the bearing ring (261). A spiral blade (263) is fixedly distributed on the outer side wall of the movable rod (262). The spiral blade (263) has a structure that is smaller at the top and larger at the bottom.
4. An automatic suction sampling device for a surface water sampling station according to claim 1, characterized in that: The lifting adjustment mechanism (3) includes a bracket (31), an electric telescopic device one (32), a transition plate (34), a fixed cross plate (35), and an electric telescopic device two (36). The bracket (31) is an L-shaped plate structure fixedly installed at the upper front corner of the sampling device vehicle body (1). The lower end of the bracket (31) is fixedly provided with a reinforcing plate (311). The electric telescopic device (32) is fixedly installed at the upper front of the bracket (31). A telescopic rod (321) is connected through the lower part of the electric telescopic device (32). One end of the adapter plate (34) is fixedly installed at the lower end of the telescopic rod (321). The other end of the adapter plate (34) is fixedly installed at the lower end of the outside of the water pumping extension hose (24). Support rods (341) are fixedly distributed around the adapter plate (34) and the suction cylinder (25).
5. An automatic suction sampling device for a surface water sampling station according to claim 4, characterized in that: The bottom of the bracket (31) is fixedly provided with a support plate (332), and the front end of the support plate (332) is fixedly provided with a connecting plate (331). The front end of the connecting plate (331) is fixedly provided with a limiting ring (33), and the limiting ring (33) is located outside the telescopic rod (321).
6. An automatic suction sampling device for a surface water sampling station according to claim 5, characterized in that: The support adjustment mechanism (4) includes a slip ring (41), a connecting rod (43), a support frame plate (44), and a base plate (45). A limiting plate (42) is fixedly provided on the outer wall of the suction cylinder (25). The slip ring (41) is slidably connected to the outside of the suction cylinder (25) and limited to the outer end of the limiting plate (42). The support frame plate (44) is a frame structure with a smaller upper part and a larger lower part and is fixedly distributed on the outer wall of the slip ring (41). The base plate (45) is fixedly provided on the bottom of the support frame plate (44). A pointed structure (46) is fixedly distributed on the bottom of the base plate (45).
7. An automatic suction sampling device for a surface water sampling station according to claim 6, characterized in that: The fixed horizontal plate (35) is fixed to the side of the bracket (31), the electric telescopic device two (36) is fixed to the upper end of the fixed horizontal plate (35), the lower end of the electric telescopic device two (36) is connected to the telescopic rod two (361), the middle of the adapter plate (34) is fixed to the limiting cylinder (362), and the telescopic rod two (361) is connected to the inside of the limiting cylinder (362). The adapter rod (43) is a bent tube structure fixed on the outer wall of the slip ring (41), and the adapter rod (43) is fixed at the bottom of the telescopic rod (361).