A water quality monitoring device for environmental engineering

Abstract

The present invention relates to the technical field of water quality monitoring, and particularly relates to a water quality monitoring device for environmental engineering. It includes a monitoring box and monitoring sensors. A driving motor is provided on the monitoring box, and the monitoring box floats on the water surface. A power supply device for charging the driving motor is provided on the monitoring box. Through the set negative pressure plate and delay block in this solution, when too many impurities accumulate on the filter plate, which affects the water passing through the filter plate, under the action of negative pressure, the negative pressure plate moves towards the inside of the extension pipe, thereby driving the filter plate to move downward. When the filter plate moves downward to a certain position, the filter plate can rotate by an angle so that the side adhering to the impurities is opposite to the water flow direction, and then the adhering impurities are pushed off the filter plate by the impact of the water flow, thereby deeply cleaning the accumulated impurities.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and particularly to a water quality monitoring device for environmental engineering Background Art

[0002] Water quality monitoring is a process of evaluating the water quality and its changes by measuring physical, chemical, and biological indicators in water bodies. It is of great significance in environmental protection, public health, economic development, and scientific research.

[0003] For example, a water quality monitoring device for a low-water-level river with the Chinese patent authorization number: CN118518642B can monitor water at different depths and can clean impurities adhering to the device in the water.

[0004] However, when monitoring water at different depths, this method can only monitor the water quality in a fixed-depth interval, and the monitoring sensors for different depths cannot be independently adjusted relative to other depths, which will affect the applicability of the device in different situations. And in water quality monitoring, the cleaning process of impurities adsorbed on its surface is only completed by scraping, and its cleaning efficiency is prone to impurity accumulation in the long run.

[0005] In view of the above situation, a water quality monitoring device for environmental engineering is proposed. Summary of the Invention

[0006] In view of the above situation, to overcome the deficiencies of the prior art, the present invention provides a water quality monitoring device for environmental engineering to solve the problems raised in the above background art.

[0007] A water quality monitoring device for environmental engineering includes a monitoring box and monitoring sensors. A driving motor is provided on the monitoring box, and the monitoring box floats on the water surface. A power supply device for charging the driving motor is provided on the monitoring box;

[0008] A plurality of water intake mechanisms immersed in water are provided at the bottom of the monitoring box. The plurality of water intake mechanisms can independently adjust the depth of extension in the water. A plurality of pumping chambers are provided in the monitoring box, and the pumping chambers correspond to the water intake mechanisms. The monitoring sensors are arranged in the pumping chambers;

[0009] The water intake mechanism includes a fixed pipe and an extension pipe. The extension pipe can move relative to the fixed pipe in the vertical direction. An impurity removal mechanism is provided in the extension pipe. A filter plate is provided in the extension pipe. The impurity removal mechanism is used to clean the impurities adhering to the filter plate.

[0010] Preferably, the power supply device includes a storage fan blade installed on the side wall of the monitoring box. The bottom of the storage fan blade contacts the water surface, and the rotation of the storage fan blade is driven by the flow of water. Electric energy is generated through the rotation of the storage fan blade to supply power to the driving motor;

[0011] A photovoltaic panel is provided above the monitoring box, and the photovoltaic panel supplies power to the driving motor through light.

[0012] Preferably, a plurality of water inlets and one water outlet are opened at the bottom end of the monitoring box. The plurality of water inlets respectively correspond to a plurality of pumping chambers. The water inlets are communicated with the pumping chambers, and the fixed pipe is fixedly connected to the inner side wall of the water inlet;

[0013] The pumping chamber is communicated with one water outlet. A one-way valve plate is provided at the tail end of the pumping chamber close to the water outlet. A water pump body is provided on the fixed pipe corresponding to each of the plurality of pumping chambers. The water pump body drives water to flow into the pumping chamber through the water inlet, and the water in the plurality of pumping chambers will flow out of the monitoring box through the water outlet.

[0014] Preferably, a floating block is provided outside the monitoring box. The floating block is used to provide buoyancy so that the monitoring box floats on the water surface. A counterweight ball is connected to the bottom of the monitoring box through a towing rope, and the counterweight ball is used to limit the installation position of the monitoring box.

[0015] Preferably, a monitoring groove is provided in the pumping chamber, and the monitoring sensor is located in the monitoring groove.

[0016] Preferably, the monitoring box is rotatably connected to an adjustment shaft in the transverse direction. A transmission chamber is opened in the monitoring box, and a moving shaft is rotatably connected in the transmission chamber. One end of the moving shaft close to the adjustment shaft is meshed and connected through a bevel gear;

[0017] The inner side wall of the fixed pipe is slidably connected to the extension pipe, and the outer side wall of the extension pipe is threadedly connected to the moving shaft.

[0018] Preferably, the impurity removal mechanism includes a negative pressure plate and a lifting frame arranged in the extension pipe. A negative pressure shaft is fixedly connected to the negative pressure plate. The negative pressure shaft penetrates through the side wall of the extension pipe. A limiting plate is fixedly connected to the negative pressure shaft located outside the extension pipe, and a negative pressure spring is provided between the limiting plate and the extension pipe.

[0019] Preferably, the lifting frame is connected to the inner side wall of the extension pipe through a telescopic rod, and a return spring is further provided between the two. The negative pressure plate is connected to the lifting frame through a transmission rod, and both ends of the transmission rod are rotatably connected to the negative pressure plate and the lifting frame respectively;

[0020] A filter plate for filtering impurities in water is provided inside the lifting frame. A rotating shaft is rotatably connected inside the lifting frame. The rotating shaft is connected to the filter plate. The rotation of the rotating shaft can drive the filter plate to rotate. A rotating gear is provided on the outer side wall of the rotating shaft.

[0021] Preferably, a timing groove is formed on the side wall of the extension pipe below the lifting frame in the initial state. A delay cylinder is provided in the timing groove. A start switch is provided on one side of the delay cylinder. A delay block is slidably connected in the timing groove. The delay block is connected to the output end of the delay cylinder. When the delay block moves into the timing groove, it will contact the start switch.

[0022] A rotating rack is provided at the bottom end of the extension pipe. The rotating rack is adapted to the rotating gear. A downward moving slope and an upward moving slope are provided on the side of the delay block facing the inside of the extension pipe. When the lifting frame moves up or down, the delay block will be pushed into the timing groove.

[0023] Preferably, a pressure cylinder is provided on the side wall of the extension pipe near the bottom end and is arranged along the direction of water flow. The pressure cylinder can accelerate the flow rate of water when it passes through the bottom end of the extension pipe.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. Through the provided extension pipe and moving shaft in this solution, when it is necessary to monitor water quality at different depths, the depth of the extension pipe can be manually adjusted to monitor water at different depths, solving the problem that the monitoring positions at multiple depths are relatively fixed in the existing problems.

[0026] 2. Through the provided negative pressure plate and delay block in this solution, when too many impurities accumulate on the filter plate and affect the passage of water through the filter plate, under the action of negative pressure, the negative pressure plate will move towards the inside of the extension pipe, thereby driving the filter plate to move downward. When the filter plate moves down to a certain position, the filter plate can be rotated by an angle so that the side adhering to the impurities is opposite to the direction of water flow, and then the adhering impurities can be pushed off the filter plate by the impact of water flow, thereby performing a deep cleaning of the accumulated impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 is a schematic diagram of the position of the pumping chamber in the present invention;

[0029] Figure 3 is Figure 2 the enlarged view of A in

[0030] Figure 4Cross-sectional view of the extension pipe;

[0031] Figure 5 Structural schematic diagram of the filter plate;

[0032] Figure 6 State diagram during the cleaning process of the filter plate;

[0033] Figure 7 Structural schematic diagram of the delay block;

[0034] Figure 8 Structural schematic diagram of the pressurizing cylinder.

[0035] In the figure:

[0036] 1. Monitoring box; 2. Driving motor; 3. Energy storage fan blade; 4. Photovoltaic panel; 5. Floating block; 6. Counterweight ball; 7. Water inlet; 8. Pumping chamber; 9. Monitoring groove; 10. Monitoring sensor; 11. Check valve plate; 12. Water outlet; 13. Fixed pipe; 14. Extension pipe; 15. Water pump body; 16. Towing rope; 17. Moving shaft; 18. Transmission chamber; 19. Adjusting shaft; 20. Bevel gear; 21. Negative pressure plate; 22. Negative pressure shaft; 23. Negative pressure spring; 24. Telescopic rod; 25. Lifting frame; 26. Filter plate; 27. Transmission rod; 28. Rotating shaft; 29. Rotating gear; 30. Delay block; 3001. Downward inclined surface; 3002. Upward inclined surface; 31. Delay cylinder; 32. Start switch; 33. Pressurizing cylinder; 34. Timing groove. Specific embodiments

[0037] Next, reference will be made to the reference append Figures 1 to 8 The embodiments of the present invention will be described in detail. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. Embodiment 1

[0038] An environmental engineering water quality monitoring device, referring to Figures 1 - 8 , includes a monitoring box 1 and a monitoring sensor 10. A driving motor 2 is provided on the monitoring box 1. The monitoring box 1 floats on the water surface, and the water quality detection device monitors flowing live water. A power supply device for charging the driving motor 2 is provided on the monitoring box 1.

[0039] The power supply device includes an energy storage fan blade 3 installed on the side wall of the monitoring box 1. The bottom of the energy storage fan blade 3 contacts the water surface. The rotation of the energy storage fan blade 3 is driven by the flow of water, and electric energy is generated by the rotation of the energy storage fan blade 3 to supply power to the driving motor 2; a photovoltaic panel 4 is provided above the monitoring box 1, and the photovoltaic panel 4 supplies power to the driving motor 2 through light. Among them, the rotation of the energy storage fan blade 3 and the power provided by the photovoltaic panel 4 being irradiated by light are conventional means and will not be described in detail.

[0040] A floating block 5 is provided outside the monitoring box 1. The floating block 5 is used to provide buoyancy so that the monitoring box 1 floats on the water surface. A counterweight ball 6 is connected to the bottom of the monitoring box 1 through a towing rope 16. The counterweight ball 6 is used to define the installation position of the monitoring box 1. Since the installation position of the monitoring box 1 is a flowing live water area, the counterweight ball 6 is provided to define the installation position of the monitoring box 1, indicating that the monitoring box 1 moves a large distance under the action of the water flow. Embodiment 2

[0041] This embodiment specifically illustrates how to autonomously adjust the water quality of the water flow at different depths to be monitored by multiple monitoring sensors 10.

[0042] A plurality of water intake mechanisms immersed in the water are provided at the bottom of the monitoring box 1. The plurality of water intake mechanisms can autonomously adjust the depth of extension in the water. A plurality of pumping chambers 8 are provided in the monitoring box 1. The pumping chambers 8 correspond to the water intake mechanisms. The monitoring sensors 10 are arranged in the pumping chambers 8. A monitoring groove 9 is provided in the pumping chamber 8. The monitoring sensor 10 is located in the monitoring groove 9. When the water flow passes through the monitoring sensor 10, the monitoring sensor 10 can monitor the water quality.

[0043] A plurality of water inlets 7 and an outlet 12 are opened at the bottom end of the monitoring box 1. The plurality of water inlets 7 correspond to the plurality of pumping chambers 8 respectively. The water inlets 7 are communicated with the pumping chambers 8. The fixed pipe 13 is fixedly connected to the inner side wall of the water inlet 7;

[0044] The pumping chamber 8 is communicated with an outlet 12. A one-way valve plate 11 is provided at the end of the pumping chamber 8 close to the outlet 12. A water pump body 15 is provided on the fixed pipe 13 corresponding to the plurality of pumping chambers 8. The water pump body 15 drives water to flow into the pumping chamber 8 through the water inlet 7. The water in the plurality of pumping chambers 8 will flow out of the monitoring box 1 through the outlet 12. By providing the one-way valve plate 11, it is possible to prevent the water at different depths from being discharged into other pumping chambers 8 during the discharge process, thereby avoiding the occurrence of incorrect monitoring data.

[0045] The water intake mechanism includes a fixed pipe 13 and an extension pipe 14. The extension pipe 14 can move relative to the fixed pipe 13 in the vertical direction. The monitoring box 1 is rotatably connected to an adjustment shaft 19 in the horizontal direction. A transmission chamber 18 is opened in the monitoring box 1. A moving shaft 17 is rotatably connected in the transmission chamber 18. One end of the moving shaft 17 close to the adjustment shaft 19 is meshed and connected through a bevel gear 20;

[0046] The inner side wall of the fixed pipe 13 is slidably connected to the extension pipe 14. The outer side wall of the extension pipe 14 is threadedly connected to the moving shaft 17.

[0047] Specifically, when it is necessary to monitor water at different depths, the operator can independently rotate one of the adjustment shafts 19. Under the driving action of the bevel gear 20, the moving shaft 17 rotates, and then, through the action of the thread, the extension pipe 14 moves downward or upward (the specific moving height depends on actual needs). When the bottom end of the extension pipe 14 moves to the measured depth, the rotation of the adjustment shaft 19 can be stopped. Then, the water pump body 15 can be used to pump water, so that a part of the water flow at this depth flows through the position of the corresponding monitoring sensor 10, thereby independently monitoring the water quality at this depth. Embodiment 3

[0048] This embodiment specifically illustrates the process of cleaning the impurities accumulated on the filter plate 26.

[0049] An impurity removal mechanism is provided in the extension pipe 14, a filter plate 26 is provided in the extension pipe 14, and the impurity removal mechanism is used to clean the impurities adhered to the filter plate 26. Refer to the appendix Figure 4 , when water flows from the extension pipe 14 into the pumping chamber 8, the impurities in the water flow will be blocked by the filter plate 26, and thus accumulate below the filter plate 26.

[0050] The impurity removal mechanism includes a negative pressure plate 21 and a lifting frame 25 provided in the extension pipe 14. A negative pressure shaft 22 is fixedly connected to the negative pressure plate 21. The negative pressure shaft 22 penetrates the side wall of the extension pipe 14. A limiting plate is fixedly connected to the negative pressure shaft 22 located outside the extension pipe 14, and a negative pressure spring 23 is provided between the limiting plate and the extension pipe 14.

[0051] The lifting frame 25 is connected to the inner side wall of the extension pipe 14 through a telescopic rod 24, and a return spring is also provided between the two. The negative pressure plate 21 and the lifting frame 25 are connected through a transmission rod 27. The two ends of the transmission rod 27 are respectively rotatably connected to the negative pressure plate 21 and the lifting frame 25.

[0052] When too many impurities accumulate on the filter plate 26, it will block the water from flowing into the extension pipe 14. Also, due to the existence of the water pump body 15, a negative pressure state will be formed in the extension pipe 14. The negative pressure in the extension pipe 14 will drive the negative pressure plate 21 to move into the extension pipe 14 (when the cross-sectional area in the sliding direction of the negative pressure shaft 22 is larger than the area of the filter plate 26, the pressure received by the filter plate 26 will be smaller than the pressure received by the negative pressure plate 21). During the movement of the negative pressure plate 21, the overall movement of the lifting frame 25 and the filter plate 26 will be caused through the action of the transmission rod 27.

[0053] A filter plate 26 for filtering impurities in water is provided inside the lifting frame 25. A rotating shaft 28 is rotatably connected inside the lifting frame 25. The rotating shaft 28 is connected to the filter plate 26. The rotation of the rotating shaft 28 can drive the filter plate 26 to rotate. A rotating gear 29 is provided on the outer side wall of the rotating shaft 28.

[0054] A timing groove 34 is formed on the side wall of the extension pipe 14 below the lifting frame 25 in the initial state. A delay cylinder 31 is provided in the timing groove 34. A start switch 32 is provided on one side of the delay cylinder 31. A delay block 30 is slidably connected in the timing groove 34. The delay block 30 is connected to the output end of the delay cylinder 31. When the delay block 30 moves into the timing groove 34, it will contact the start switch 32. On the side of the delay block 30 facing the inside of the extension pipe 14, there are a downward inclined surface 3001 and an upward inclined surface 3002. When the lifting frame 25 moves up or down, it will push the delay block 30 into the timing groove 34.

[0055] When the lifting frame 25 moves downward, referring to the attached Figure 6 figure, the lifting frame 25 will contact the downward inclined surface 3001, thereby causing the delay block 30 to move into the timing groove 34. When the delay block 30 enters the timing groove 34, the delay block 30 will press the start switch 32. At this time, the lifting frame 25 will move to the position of the upward inclined surface 3002. The start switch 32 will cause the delay cylinder 31 to push the delay block 30 into the extension pipe 14. Further, under the action of the upward inclined surface 3002, the lifting frame 25 will move downward. It should be noted that the bottom end of the delay block 30 should be lower than the bottom end of the extension pipe 14 (when there is a gap between the filter plate 26 and the extension pipe 14, the negative pressure inside the extension pipe 14 does not exist. At this time, the negative pressure plate 21 will no longer push the lifting frame 25 downward, but the delay block 30 will push the filter plate 26 downward). It should be noted that when the delay cylinder 31 is controlled by the start switch 32, the duration of the delay cylinder 31 is five minutes, so that the filter plate 26 has enough time to wash the impurities on its surface by the impact of water flow.

[0056] A rotating rack is provided at the bottom end of the extension pipe 14. The rotating rack is adapted to the rotating gear 29. When the upward inclined surface 3002 pushes the lifting frame 25 downward, the rotating gear 29 will engage with the delay block 30, thereby causing the filter plate 26 to rotate by an angle. Referring to the attached Figure 6, the angle of the filter plate 26 in the figure is the angle for cleaning impurities. At this time, the water flow can contact the back of the impurities, and the impurities are cleaned off the filter plate 26 under the impact force of the water flow. Through the arrangement of this method, it is possible to prevent the impurities in the water from flowing into the extension tube 14 as much as possible during the time period of cleaning impurities. Then, when the delay cylinder 31 no longer pushes the delay block 30, the lifting frame 25 will move up under the action of the reset spring, and then move to the initial position. Since the impurities on the filter plate 26 are cleaned, the air pressure in the extension tube 14 is normal, and the negative pressure plate 21 and the filter plate 26 will also move to the initial position. In this way, when too many impurities are accumulated on the filter plate 26, its surface can be cleaned by the impact force of the water flow, and its cleaning efficiency will also be improved due to the change of angle during the cleaning process.

[0057] Reference Figure 8 , Figure 8 The direction of the arrow in is the direction of water flow. A pressure cylinder 33 is provided on the side wall of the extension tube 14 near the bottom, and is arranged along the direction of water flow. The pressure cylinder 33 can accelerate the flow rate of water when it passes through the bottom of the extension tube 14. Specifically, the pressure cylinder 33 is arranged in a hollow rectangular table manner. The water flows from the larger side to the smaller side, the cross-sectional area becomes smaller, and the volume flow rate does not change, so the flow rate of the water flow becomes larger. The setting of the pressure cylinder 33 is a preferred method for cleaning the above-mentioned middle filter plate 26. By this method, the flow rate of the water flow passing through the bottom of the extension tube 14 can be increased, and when it is necessary to clean the impurities on the filter plate 26, its cleaning efficiency is improved.

[0058] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0059] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A water quality monitoring device for environmental engineering, characterized in that: It comprises a monitoring box (1) and a monitoring sensor (10), wherein the monitoring box (1) is provided with a driving motor (2), the monitoring box (1) floats on the water surface, and the monitoring box (1) is provided with a power-charging device for charging the driving motor (2); The bottom of the monitoring box (1) is provided with a plurality of water intake mechanisms immersed in water, the plurality of water intake mechanisms being able to autonomously adjust the depth of their extension in the water, the monitoring box (1) is provided with a plurality of water pumping chambers (8), the water pumping chambers (8) corresponding to the water intake mechanisms, and the monitoring sensor (10) being arranged in the water pumping chamber (8); The water intake mechanism comprises a fixed pipe (13) and an extension pipe (14); the extension pipe (14) is movable in a vertical direction relative to the fixed pipe (13); a cleaning mechanism is provided in the extension pipe (14); a filter plate (26) is provided in the extension pipe (14); the cleaning mechanism is used to clean impurities attached to the filter plate (26); The impurity removal mechanism comprises a negative pressure plate (21) and a lifting frame (25) arranged in the extension tube (14); a negative pressure shaft (22) is fixedly connected to the negative pressure plate (21); the negative pressure shaft (22) penetrates the side wall of the extension tube (14); a limit plate is fixedly connected to the negative pressure shaft (22) outside the extension tube (14); a negative pressure spring (23) is provided between the limit plate and the extension tube (14); The lifting frame (25) is connected to the inner side wall of the extension tube (14) via a telescopic rod (24), and a return spring is provided between the two. The negative pressure plate (21) is connected to the lifting frame (25) via a transmission rod (27), and the two ends of the transmission rod (27) are respectively rotatably connected to the negative pressure plate (21) and the lifting frame (25); A filter plate (26) for filtering impurities in water is provided on the inner side of the lifting frame (25); a rotating shaft (28) is rotatably connected inside the lifting frame (25); the rotating shaft (28) and the filter plate (26) are connected; the rotation of the rotating shaft (28) can drive the filter plate (26) to rotate; and a rotating gear (29) is provided on the outer side wall of the rotating shaft (28); A timing groove (34) is provided on the side wall of the extension tube (14) below the lifting frame (25) in the initial state, a delay cylinder (31) is provided in the timing groove (34), a start switch (32) is provided on one side of the delay cylinder (31), a delay block (30) is slidably connected in the timing groove (34), the delay block (30) is connected to the output end of the delay cylinder (31), and the delay block (30) contacts the start switch (32) when moving into the timing groove (34); A rotating rack is provided at the bottom end of the extension tube (14), and the rotating rack is adapted to fit with the rotating gear (29). A downward inclined surface (3001) and an upward inclined surface (3002) are provided on the side of the delay block (30) facing the inside of the extension tube (14). When the lifting frame (25) moves up or down, the delay block (30) is pushed into the timing groove (34).

2. The water quality monitoring device for environmental engineering according to claim 1 is characterized in that: The power supply device comprises an energy storage fan blade (3) mounted on a side wall of the monitoring box (1), the bottom of the energy storage fan blade (3) being in contact with the water surface, the energy storage fan blade (3) being driven to rotate by the flow of water, and the rotation of the energy storage fan blade (3) generating electrical energy to supply power to the drive motor (2); A photovoltaic panel (4) is provided above the monitoring box (1), and the photovoltaic panel (4) supplies power to the driving motor (2) through light.

3. The water quality monitoring device for environmental engineering according to claim 1 is characterized in that: The bottom end of the monitoring box (1) is provided with a plurality of water inlets (7) and a water outlet (12), the plurality of water inlets (7) respectively corresponding to the plurality of water pumping chambers (8), the water inlets (7) being in communication with the water pumping chambers (8), and the fixed pipe (13) being fixedly connected to the inner side wall of the water inlet (7); The pumping chamber (8) is communicated with a water outlet (12), a one-way valve plate (11) is provided at the rear end of the pumping chamber (8) near the water outlet (12), and a pumping pump body (15) is provided on the fixed pipes (13) corresponding to the plurality of pumping chambers (8). The pumping pump body (15) drives water to flow into the pumping chamber (8) through the water inlet (7), and the water in the plurality of pumping chambers (8) flows out of the monitoring box (1) through the water outlet (12).

4. The water quality monitoring device for environmental engineering according to claim 1 is characterized in that: The monitoring box (1) is provided with a floating block (5) outside, the floating block (5) is used to provide buoyancy so that the monitoring box (1) floats on the water surface, and the bottom of the monitoring box (1) is connected to a counterweight ball (6) via a traction rope (16), and the counterweight ball (6) is used to limit the installation position of the monitoring box (1).

5. The water quality monitoring device for environmental engineering according to claim 1 is characterized in that: A monitoring groove (9) is provided in the water pumping chamber (8), and a monitoring sensor (10) is located in the monitoring groove (9).

6. The water quality monitoring device for environmental engineering according to claim 1 is characterized in that: The monitoring box (1) is rotatably connected to an adjustment shaft (19) in the transverse direction, a transmission chamber (18) is provided in the monitoring box (1), a moving shaft (17) is rotatably connected in the transmission chamber (18), and the moving shaft (17) and the adjustment shaft (19) are meshed and connected at their adjacent ends via a bevel gear (20); The inner side wall of the fixed tube (13) is slidably connected to the extension tube (14), and the outer side wall of the extension tube (14) is threadedly connected to the movable shaft (17).

7. The water quality monitoring device for environmental engineering according to claim 1 is characterized in that: A pressure cylinder (33) is provided on the side wall of the extension tube (14) near the bottom end and is arranged along the direction of water flow. The pressure cylinder (33) can accelerate the flow rate of water when it passes through the bottom end of the extension tube (14). The pressure cylinder (33) is arranged in the form of a hollow rectangular table, and the side of the pressure cylinder (33) with a larger area is opposite to the flow direction of the water flow.

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