A water quality detection device for water conservancy projects

Abstract

The present invention discloses a water quality detection device for water conservancy projects, comprising a fixing seat fixedly installed at the bottom of a river, a supporting rod and a columnar block; the columnar block is provided with an external frame and a floating plate that can be lifted and moved, and can be automatically adjusted with changes in water waves; through the cooperation of a lifting tube and a piston plate, water samples can be quickly and quantitatively extracted for detection; the regulating mechanism can flexibly adjust the sampling depth according to changes in water waves; in order to improve the sampled water quality, the device is provided with a filter frame that can effectively remove suspended matter in the water, and is equipped with a cleaning mechanism so that a scraper can scrape and clean floating matter filtered on the surface of the filter frame to ensure the filtering effect; in addition, a water weed stripping mechanism pushes the water weeds around the filter frame away from the filter frame to prevent blockage; the present invention constructs an efficient and stable automatic water quality monitoring system, provides accurate data support for water resource management and environmental protection, and significantly improves monitoring efficiency and data reliability.

Description

Technical Field

[0001] The invention relates to the technical field of water quality detection for water conservancy projects, in particular to a water quality detection device for water conservancy projects. Background Art

[0002] As an important water resource, rivers are widely used for drinking water supply, agricultural irrigation, industrial water use and ecological environment protection. However, with the acceleration of urbanization and the increase of industrial activities, the risk of river water pollution has increased significantly, leading to problems such as eutrophication, heavy metal pollution and microbial pollution. These pollutions not only affect the health of aquatic ecosystems, but also pose a serious threat to human health and socioeconomic development. Therefore, monitoring and evaluating river water quality is of great practical significance.

[0003] The existing Chinese patent with publication number CN118671293A includes an outer shell; a collecting cylinder, the outer shell and the collecting cylinder constitute a sampling device; a filter assembly, which is installed to the bottom of the collecting cylinder; a driving assembly, which is arranged inside the outer shell; a rotating assembly, which is connected to the driving assembly and has a scraper rod assembly, the scraper rod assembly includes an outer scraper rod located on the outside of the filter assembly and an inner scraper rod located on the inside of the filter assembly; wherein, under the drive of the driving assembly, the rotating assembly can rotate around the collecting cylinder, and when the scraper rod assembly contacts the blockage position, the distance between the inner scraper rod and the outer scraper rod can be reduced to increase the degree of clamping of the filter assembly.

[0004] When the above device is in use, an inner scraper rod and an outer scraper rod that can clamp each other are arranged, and the inner scraper rod and the outer scraper rod can increase the degree of clamping of the scraper rod on the filter assembly when encountering the filter in a more severely clogged area, thereby improving the scraping effect of the filter assembly. However, in actual use, since the position of the collecting cylinder is fixed, the collecting cylinder can only collect surface water of the river, and it is difficult to collect river water at various depths, which affects the accuracy of water quality detection data. Therefore, it is difficult to collect water sources at different depths of the river.

[0005] For this reason, we proposed a water quality detection device for water conservancy projects. Summary of the invention

[0006] The purpose of the present invention is to provide a water quality detection device for water conservancy projects, which has the advantage of collecting water sources at different depths in rivers and solves the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water quality detection device for water conservancy projects, comprising a fixed seat fixedly installed on the bottom of a river, support rods are fixedly connected to the symmetrical positions on both sides of the fixed seat, and the ends of the support rods on both sides are fixedly connected to columnar blocks, the outer contour of the columnar block is sleeved with an external frame for lifting and moving, the outer contour of the external frame is fixedly connected with a floating plate floating on the river surface, a cylindrical shell is penetrated and fixedly connected to the columnar block, a fixed pipe is penetrated and fixedly connected to the bottom end of the cylindrical shell, a collecting bucket is sleeved on the outer contour of the fixed pipe, a filter frame for filtering floating objects in the water is fixedly connected to the outer contour of the bottom end of the collecting bucket, and a sampling mechanism for extracting and detecting river water and an adjusting mechanism for sampling river water at different depths are provided on the external frame.

[0008] Preferably, the sampling mechanism includes L-shaped rods fixedly connected at symmetrical positions on both sides of the external frame, fixed plates fixedly connected to the opposite ends of the L-shaped rods on both sides, a lifting tube penetrated and fixedly connected to the fixed plate, a piston plate for extracting river water is fixedly connected to the outer contour of the bottom end of the lifting tube, and the piston plate is affixed to and movably connected to the inner wall of the cylindrical shell, and a spring for guiding the piston plate to reset is fixedly connected to the opposite surface of the fixed plate and the columnar block.

[0009] Preferably, the inner wall of the fixed tube near the end is fixedly connected with a liquid inlet valve for quantitatively extracting river water, the inner wall of the lifting tube near the bottom is fixedly connected with a liquid discharge valve for discharging the monitored river water, and the inner wall of the bottom end of the cylindrical shell is fixedly connected with a pH sensor for detecting the river water.

[0010] Preferably, the adjustment mechanism includes fixed blocks fixedly connected to the columnar block at symmetrical positions on both sides near the bottom, the fixed blocks on both sides are rotatably connected to rotating rods for pushing the collecting bucket to move up and down through pins, and the external frame is fixedly connected to pulling rods for pushing the rotating rods to swing back and forth at symmetrical positions on both sides near the bottom, the ends of the rotating rods on both sides are provided with connecting grooves for the pulling rods to perform movable adjustment, and the bottom ends of the pulling rods are respectively passed through the inner walls of the connecting grooves on the adjacent sides and are movably connected.

[0011] Preferably, a fixing sleeve is fixedly connected to the outer contour of the collecting bucket near the end, and connecting rods are rotatably connected to the connecting rods at positions corresponding to the connecting rods on both sides of the fixing sleeve through pins, and the ends of the connecting rods on both sides away from the fixing sleeves are respectively rotatably connected to the rotating rods at the adjacent ends through pins, and movable grooves for the connecting rods to be movably adjusted are provided on the support rods on both sides.

[0012] Preferably, a cylindrical sleeve is rotatably connected to the outer contour of the collecting barrel, a fixing ring is fixedly connected to the outer contour of the cylindrical sleeve near the bottom end, a plurality of evenly placed scrapers are fixedly connected to the bottom end of the fixing ring near the edge, and the scrapers are in contact with the surface of the filter frame and are movably connected, an inclined groove is provided on the outer contour of the cylindrical sleeve, a support block for driving the cylindrical sleeve to reciprocate is fixedly connected to one of the support rods, and an end of the support block away from the support rod penetrates through the inner wall of the inclined groove and is movably connected.

[0013] Preferably, the bottom end of the filter frame is fixedly connected to a triangular block via a pin shaft, and the three ends of the triangular block are rotatably connected to a swing rod via a pin shaft, and the bottom end of each swing rod is fixedly connected to a baffle for pushing the surrounding aquatic plants outward, and limiting grooves are provided near the center position of the three ends of the triangular block, and the inner wall of each limiting groove is movably connected to a movable seat, and each end of the movable seat is rotatably connected to the bottom end of the adjusting rod via a pin shaft to pull the baffle to expand or contract.

[0014] Preferably, a circular plate is rotatably connected to the outer contour of the triangular block fixed axis near the top, and the outer contour of the circular plate is fixedly connected to the scraper, and arc grooves are provided at positions corresponding to the circular plate and the movable seat, and the inner wall of each arc groove is movably connected to a slider that pulls the movable seat to perform horizontal reciprocating movement, and the bottom end of each slider is fixedly connected to the movable seat at the relative position.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the combined design of the external frame and the floating plate, the floating plate can respond to the changes of water waves in real time and drive the external frame to automatically rise and fall, thereby realizing the quantitative extraction of river water. Compared with the traditional manual sampling method, this automated sampling mechanism improves the efficiency and consistency of sampling, improves work efficiency, significantly reduces the workload of operators, and reduces errors caused by human factors.

[0017] 2. Through the adjustment mechanism, the external frame and the float can automatically rise and fall with the changes in water waves, thereby realizing the adjustment of the sampling depth of the collection bucket. The collection bucket can collect water sources at different water depths, ensuring that the collected water samples cover the vertical distribution of the water body, thereby comprehensively reflecting the changes in water quality, and providing practical and effective guarantees for the scientific monitoring of water resources.

[0018] 3. As the collection barrel moves up and down and back and forth, the scraper can scrape and clean the floating objects filtered on the surface of the filter frame, and can timely maintain the clean state of the filter frame during the sampling process to ensure that the filtering effect is always at the best level, thereby improving the accuracy and reliability of the test data, preventing sampling deviations caused by contamination of the filter frame surface, and providing a more stable basis for water quality monitoring.

[0019] 4. A baffle for stripping aquatic plants is arranged around the filter frame. When the scraper rotates to clean the attachments on the surface of the filter frame, the adjusting rod drives the baffle to move outward through the swing rod under the pull of the movable seat, so that the baffle can push the aquatic plants around the filter frame away from the filter frame, avoiding the surrounding aquatic plants from adhering to the surface of the filter frame due to the siphon effect around the filter frame, thereby improving the sampling quality and making the monitoring results more reliable.

[0020] The coordinated use of the above-mentioned structure solves the problem that, in actual use of the existing device, since the position of the collecting tube is fixed, the collecting tube can only collect surface water of the river and it is difficult to collect river water at various depths, which affects the accuracy of water quality detection data and makes it difficult to collect water sources at different depths of the river. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a cross-sectional schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle;

[0024] Figure 4 For the present invention Figure 2 Schematic diagram of the structure at B in the middle;

[0025] Figure 5 It is a schematic cross-sectional view of the three-dimensional structure of the cylindrical sleeve of the present invention;

[0026] Figure 6 It is a cross-sectional schematic diagram of the three-dimensional structure of the cylindrical shell of the present invention;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the filter frame of the present invention;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the circular plate of the present invention.

[0029] In the figure: 1, fixed seat; 2, support rod; 201, movable groove; 3, cylindrical block; 4, external frame; 5, floating plate; 6, cylindrical shell; 7, pH sensor; 8, fixed tube; 801, liquid inlet valve; 9, collecting bucket; 10, filter frame; 11, L-shaped rod; 12, fixed plate; 13, lifting tube; 131, discharge valve; 14, piston plate; 15, spring; 16, fixed block; 17, rotating rod; 171, connecting groove; 18, pull rod; 19, fixed sleeve; 20, connecting rod; 21, cylindrical sleeve; 211, inclined groove; 22, fixed ring; 23, scraper; 24, support block; 25, triangular block; 251, limit groove; 26, swing rod; 27, baffle; 28, movable seat; 29, adjusting rod; 30, circular plate; 301, arc groove; 31, slider. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0031] See also Figures 1 to 8 The present invention provides a technical solution: a water quality detection device for a water conservancy project comprises a fixed seat 1 fixedly installed on the bottom of a river, support rods 2 are fixedly connected to the symmetrical positions on both sides of the fixed seat 1, and column blocks 3 are fixedly connected to the ends of the support rods 2 on both sides, and the outer contour of the column block 3 is sleeved with an external frame 4 for lifting and moving, and the outer contour of the external frame 4 is fixedly connected with a floating plate 5 floating on the river surface, and a columnar shell 6 is penetrated and fixedly connected to the column block 3, and a fixed pipe 8 is penetrated and fixedly connected to the bottom end of the columnar shell 6, and a collecting bucket 9 for lifting and moving is sleeved on the outer contour of the fixed pipe 8, and a filter frame 10 for filtering floating objects in the water is fixedly connected to the outer contour of the bottom end of the collecting bucket 9, and a sampling mechanism for extracting and detecting river water and an adjusting mechanism for sampling river water at different depths are provided on the external frame 4.

[0032] When in use, by setting the fixing seat 1, the fixing seat 1 is first fixedly installed on the river bottom, and the support rod 2 is set on the fixing seat 1, and the column block 3 is set on the support rod 2, so that the support rod 2 can fix and support the column block 3 on the fixing seat 1, so that the column block 3 is located on the water surface, thereby improving the stability of the water quality monitoring device, and the external frame 4 is set on the column block 3, so that the external frame 4 can be lifted and moved on the outer contour of the column block 3. Through the floating plate 5 set on the external frame 4, the floating plate 5 can drive the external frame 4 to float on the water surface. In the river, factors such as terrain and flow rate changes will cause disturbances in the water flow, resulting in the formation of water waves. For example, when the river channel narrows or there are obstacles at the bottom, the water flow will accelerate or generate turbulence, thereby forming irregular waves. When waves are formed on the water surface, the energy of the waves is transmitted to the floating plate 5 through the water, so that the floating plate 5 can drive the external frame 4 to lift and reciprocate on the outer contour of the column block 3.

[0033] The cylindrical shell 6 is fixedly supported on the cylindrical block 3 by the cylindrical shell 6 provided on the cylindrical block 3, and the fixed tube 8 is provided on the cylindrical shell 6, so that the fixed tube 8 is communicated with the inner wall of the cylindrical shell 6 and fixedly connected, and the collecting bucket 9 provided on the fixed tube 8 enables the collecting bucket 9 to be lifted and moved on the outer contour of the fixed tube 8, so as to facilitate the subsequent adjustment of the sampling depth of the river water. The filter frame 10 provided on the collecting bucket 9 can filter the floating objects in the water, and further improve the sampling quality of the river water by the collecting bucket 9. The sampling mechanism and the adjusting mechanism provided on the external frame 4 are accompanied by the floating plate 5 to drive the external frame 4 to lift and reciprocate, so that the sampling mechanism can extract and discharge the river water through the collecting bucket 9, and the adjusting mechanism can adjust the sampling depth of the river water by the collecting bucket 9, so as to realize the extraction and detection of water sources with different depths of the river water. Embodiment 2:

[0034] On the basis of the first embodiment, further:

[0035] The sampling mechanism includes an L-shaped rod 11 fixedly connected at symmetrical positions on both sides of the external frame 4, and fixed plates 12 are fixedly connected to the opposite ends of the L-shaped rod 11 on both sides. A lifting pipe 13 is penetrated and fixedly connected to the fixing plate 12, and a piston plate 14 for extracting river water is fixedly connected to the outer contour of the bottom end of the lifting pipe 13, and the piston plate 14 is attached to the inner wall of the cylindrical shell 6 and movably connected. A spring 15 for guiding the piston plate 14 to reset and move is fixedly connected to the opposite surface of the fixing plate 12 and the cylindrical block 3.

[0036] The inner wall of the fixed tube 8 near the end is fixedly connected with a liquid inlet valve 801 for quantitatively extracting river water, the inner wall of the lifting tube 13 near the bottom is fixedly connected with a liquid discharge valve 131 for discharging the monitored river water, and the inner wall of the bottom end of the cylindrical shell 6 is fixedly connected with a pH sensor 7 for detecting the river water.

[0037] When in use, the L-shaped rod 11 provided on the external frame 4 and the fixing plate 12 provided on the L-shaped rod 11 enable the L-shaped rod 11 to fix and support the fixing plate 12 on the external frame 4, and the spring 15 provided on the fixing plate 12, when the floating plate 5 is pushed by the waves to drive the external frame 4 to move in an upward vertical direction, the spring 15 is in a stretched state under the pull of the fixing plate 12, and when the water waves are out of contact with the floating plate 5, the spring 15 can pull the floating plate 5 to reset and move in a downward direction under the action of the tension, thereby realizing the lifting and reciprocating movement of the column block 3 on the external frame 4, and through the lifting tube 13 provided on the fixing plate 12 and the piston plate 14 provided on the lifting tube 13, the lifting tube 13 can drive the piston plate 14 to lift and reciprocate on the inner wall of the cylindrical shell 6 under the action of the fixing plate 12.

[0038] By means of the liquid inlet valve 801 and the liquid discharge valve 131 provided on the fixed tube 8 and the lifting tube 13, when the lifting tube 13 drives the piston plate 14 to move in the upward vertical direction, the internal air pressure of the cylindrical shell 6 close to one end of the fixed tube 8 is negative pressure, at which time the liquid inlet valve 801 is in an open state and the liquid discharge valve 131 is in a closed state, so that the collecting barrel 9 can extract the water source filtered by the filter frame 10 into the inside of the cylindrical shell 6 through the fixed tube 8, and the pH sensor 7 provided on the cylindrical shell 6 enables the pH sensor 7 to detect the water quality inside the cylindrical shell 6, when the lifting tube 13 drives the piston plate 14 to move in the downward vertical direction, and the cylindrical shell 6 The internal air pressure near one end of the fixed tube 8 is positive, the liquid inlet valve 801 is in a closed state, and the liquid discharge valve 131 is in a wide open state, so that the lifting tube 13 can discharge the water source after detection inside the cylindrical shell 6. Through the coordinated use of the above-mentioned structure, the effective linkage between automatic sampling and real-time detection is realized, the sampling efficiency is improved, and the real-time and accuracy of the data are ensured. The pH sensor 7 is an existing device that can detect multiple water quality indicators in real time, and convert the detection data into electrical signals and transmit them remotely to an external display device to prompt personnel, so that personnel can monitor the water quality monitoring data in real time. The equipment is an existing technology well known to people in this field, so it will not be repeated here. Embodiment three:

[0039] On the basis of the second embodiment, further:

[0040] The adjustment mechanism includes a columnar block 3, both of which are fixedly connected to fixed blocks 16 at symmetrical positions on both sides near the bottom, and the fixed blocks 16 on both sides are rotatably connected to rotating rods 17 for pushing the collecting bucket 9 to move up and down through pins, and the external frame 4 is fixedly connected to pull rods 18 at symmetrical positions on both sides near the bottom to push the rotating rods 17 to swing back and forth, and the ends of the rotating rods 17 on both sides are provided with connecting grooves 171 for the pull rods 18 to perform active adjustment, and the bottom ends of the pull rods 18 are respectively passed through the inner walls of the connecting grooves 171 on the adjacent sides and are movably connected.

[0041] A fixing sleeve 19 is fixedly connected to the outer contour of the collecting barrel 9 near the end, and connecting rods 20 are rotatably connected to the corresponding positions of the connecting rods 20 on both sides of the fixing sleeve 19 through pins. The ends of the connecting rods 20 on both sides away from the fixing sleeve 19 are respectively rotatably connected to the rotating rods 17 at the adjacent ends through pins, and movable grooves 201 for the connecting rods 20 to be movable and adjusted are provided on the support rods 2 on both sides.

[0042] When in use, the fixed block 16 arranged on the columnar block 3 is fixedly supported on the columnar block 3, and the rotating rod 17 arranged on the fixed block 16 enables the rotating rod 17 to be connected to the fixed block 16 for fixed-axis rotation. Through the pull rod 18 arranged on the external frame 4, and the rotating rod 17 is provided with a connecting groove 171 for supporting the pull rod 18, as the external frame 4 is lifted and reciprocated, the pull rod 18 can pull the rotating rods 17 on both sides to swing back and forth synchronously towards or away from each other.

[0043] By means of the fixing sleeve 19 provided on the collecting barrel 9, the fixing sleeve 19 is fixedly connected to the collecting barrel 9, and the connecting rod 20 provided on the fixing sleeve 19 rotatably supports the two ends of the connecting rod 20 on the rotating rod 17 and the fixing sleeve 19 respectively. By means of the movable groove 201 provided on the supporting rod 2, the connecting rod 20 can be movably connected on the inner wall of the movable groove 201. When the external frame 4 moves in the upward vertical direction, the pull rod 18 can pull the bottom ends of the rotating rods 17 on both sides to rotate in opposite directions, and the pull rod 18 can be movably adjusted on the inner wall of the connecting groove 171 to avoid obstruction to the rotation of the rotating rod 17. When the bottom ends of the rotating rods 17 move in opposite directions, the connecting rod 20 can push the collecting barrel 9 to move in the downward vertical direction through the fixing sleeve 19 under the action of the rotating rod 17, thereby realizing the adjustment of the sampling depth of the collecting barrel 9, enabling the collecting barrel 9 to collect water sources at different water depths, thereby further improving the accuracy of water quality monitoring.

[0044] When the external frame 4 moves in a downward vertical direction, the above structure synchronously performs a reset movement in the opposite direction, thereby realizing the lifting and lowering movement of the collection bucket 9. Embodiment 4:

[0045] On the basis of the third embodiment, further:

[0046] A cylindrical sleeve 21 is rotatably connected to the outer contour of the collecting barrel 9, a fixing ring 22 is fixedly connected to the outer contour of the cylindrical sleeve 21 near the bottom end, a plurality of evenly placed scrapers 23 are fixedly connected to the bottom end of the fixing ring 22 near the edge, and the scrapers 23 are in contact with the surface of the filter frame 10 and are movably connected, an inclined groove 211 is provided on the outer contour of the cylindrical sleeve 21, a support block 24 for driving the cylindrical sleeve 21 to reciprocate is fixedly connected to one of the support rods 2, and an end of the support block 24 away from the support rod 2 passes through the inner wall of the inclined groove 211 and is movably connected.

[0047] When in use, the cylindrical sleeve 21 is provided on the collecting barrel 9, and the fixing ring 22 is provided on the cylindrical sleeve 21, so that the cylindrical sleeve 21 can drive the fixing ring 22 to rotate on the outer contour of the collecting barrel 9. Through the inclined groove 211 provided on the cylindrical sleeve 21 and the support block 24 provided on the support rod 2, the support block 24 is movably supported on the inner wall of the inclined groove 211. As the collecting barrel 9 is lifted and reciprocated, the cylindrical sleeve 21 can be driven by the support block 24 and the inclined groove 211. The fixed ring 22 reciprocates on the outer contour of the collecting barrel 9. Through the scraper 23 arranged on the fixed ring 22, and the scraper 23 fits the surface of the filter frame 10, the fixed ring 22 reciprocates, so that the fixed ring 22 can drive the scraper 23 to reciprocate on the outer contour of the filter frame 10, so that the scraper 23 can scrape and clean the floating objects filtered on the surface of the filter frame 10, thereby realizing self-cleaning of the floating objects on the surface of the filter frame 10, avoiding the clogging of the holes on the surface of the filter frame 10 by the floating objects, and affecting the sampling of the river by the collecting barrel 9. Embodiment five:

[0048] On the basis of the fourth embodiment, further:

[0049] The bottom end of the filter frame 10 is fixedly connected to a triangular block 25 via a pin shaft, and the three ends of the triangular block 25 are rotatably connected to a swing rod 26 via a pin shaft, and the bottom end of each swing rod 26 is fixedly connected to a baffle 27 for pushing the surrounding aquatic plants outward, and limiting grooves 251 are provided near the center position of the three ends of the triangular block 25, and the inner wall of each limiting groove 251 is movably connected to a movable seat 28, and the movable seat 28 at each end is rotatably connected to the bottom end of the adjusting rod 29 via a pin shaft to pull the baffle 27 to expand or contract.

[0050] A circular plate 30 is rotatably connected to the outer contour of the fixed axis near the top of the triangular block 25, and the outer contour of the circular plate 30 is fixedly connected to the scraper 23. Arc grooves 301 are provided at positions corresponding to the circular plate 30 and the movable seat 28. The inner wall of each of the arc grooves 301 is movably connected to a slider 31 for pulling the movable seat 28 to perform horizontal reciprocating movement, and the bottom end of each of the sliders 31 is fixedly connected to the movable seat 28 at the relative position.

[0051] When in use, the triangular block 25 provided on the filter frame 10 is fixedly supported on the filter frame 10, and the swing rod 26 provided on the triangular block 25 is connected to the triangular block 25 for fixed-axis rotation, and the baffle 27 provided on the swing rod 26 is fixedly supported on the swing rod 26, and the baffle 27 is located on the outside of the filter frame 10, so that the baffle 27 can block the water plants around the filter frame 10, so that the water plants around the filter frame 10 can be pushed away to the outside by the baffle 27 later.

[0052] Through the limiting groove 251 opened on the triangular block 25 and the movable seat 28 arranged on the limiting groove 251, the limiting groove 251 supports the moving direction of the movable seat 28, and through the circular plate 30 arranged on the triangular block 25, the circular plate 30 is rotatably connected with the fixed axis of the triangular block 25, and the circular plate 30 is fixedly supported on the scraper 23, and the scraper 23 is driven to reciprocate by the fixed ring 22, so that the scraper 23 can drive the circular plate 30 to reciprocate synchronously, and through the arc groove 301 opened on the circular plate 30 and the slider 31 arranged on the arc groove 301, the circular plate 30 is reciprocated, so that the slider 31 can drive the movable seat 28 to reciprocate along the inner wall of the limiting groove 251 under the action of the arc groove 301.

[0053] By means of the adjusting rod 29 arranged on the movable seat 28, both ends of the adjusting rod 29 are rotatably supported on the movable seat 28 and the swing rod 26. When the collecting barrel 9 moves downward to sample the river, the slider 31 can pull the movable seat 28 to move away from the swing rod 26 under the rotation of the circular plate 30. Therefore, the adjusting rod 29 drives the baffle 27 to move outward through the swing rod 26 under the pull of the movable seat 28, so that the baffle 27 can push the water plants around the filter frame 10 away from the filter frame 10, thereby avoiding the surrounding water plants from adhering to the surface of the filter frame 10 due to the siphon effect around the filter frame 10, thereby affecting the sampling efficiency of the river water.

[0054] When the collecting bucket 9 is reset upward, the above structure is reset in the opposite direction synchronously.

[0055] Furthermore, the existing device can collect water from different depths of the river during actual use, thereby improving the accuracy of water quality monitoring and being easy to use, which is better than traditional products.

[0056] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water quality detection device for water conservancy projects, characterized in that: The invention comprises a fixed seat (1) fixedly installed on the river bottom, support rods (2) are fixedly connected at symmetrical positions on both sides of the fixed seat (1), and the ends of the support rods (2) on both sides are fixedly connected to columnar blocks (3), an external frame (4) for lifting and moving is sleeved on the outer contour of the columnar block (3), and a floating plate (5) floating on the river surface is fixedly connected to the outer contour of the external frame (4), a columnar shell (6) is penetrated and fixedly connected to the columnar block (3), and a fixed pipe (8) is penetrated and fixedly connected to the bottom end of the columnar shell (6), and a collecting bucket (9) for lifting and moving is sleeved on the outer contour of the fixed pipe (8), and a filtering frame (10) for filtering floating objects in the water is fixedly connected to the outer contour of the bottom end of the collecting bucket (9), and a sampling mechanism for extracting and testing river water and an adjusting mechanism for sampling river water at different depths are provided on the external frame (4); The sampling mechanism comprises L-shaped rods (11) fixedly connected at symmetrical positions on both sides of the external frame (4), and fixing plates (12) fixedly connected at opposite ends of the L-shaped rods (11) on both sides; The fixed plate (12) is penetrated by and fixedly connected with a lifting tube (13); a piston plate (14) for extracting river water is fixedly connected to the outer contour of the bottom end of the lifting tube (13); the piston plate (14) is in contact with and movably connected to the inner wall of the cylindrical shell (6); a spring (15) for guiding the piston plate (14) to reset is fixedly connected to the opposite surface of the fixed plate (12) and the cylindrical block (3); an inlet valve (801) for quantitatively extracting river water is fixedly connected to the inner wall near the end of the fixed tube (8); a discharge valve (131) for discharging monitored river water is fixedly connected to the inner wall near the bottom end of the lifting tube (13); and a pH sensor (7) for detecting river water is fixedly connected to the inner wall at the bottom end of the cylindrical shell (6); the regulating mechanism comprises fixed blocks (16) fixedly connected to both sides of the cylindrical block (3) at symmetrical positions near the bottom, and the fixed blocks (16) on both sides are fixedly connected by pins. The shaft is rotatably connected to a rotating rod (17) for pushing the collecting bucket (9) to move up and down; pull rods (18) for pushing the rotating rod (17) to swing back and forth are fixedly connected at symmetrical positions on both sides of the external frame (4) near the bottom; the ends of the rotating rods (17) on both sides are provided with connecting grooves (171) for the pull rods (18) to be movably adjusted, and the bottom ends of the pull rods (18) are respectively passed through the inner wall of the connecting groove (171) on the adjacent side and are movably connected; a fixing sleeve (19) is fixedly connected to the outer contour of the collecting bucket (9) near the end; the fixing sleeve (19) is rotatably connected to the connecting rod (20) at positions corresponding to the connecting rod (20) on both sides through pins; the ends of the connecting rods (20) on both sides away from the fixing sleeve (19) are respectively rotatably connected to the rotating rod (17) at the adjacent end through pins; and the support rods (2) on both sides are provided with movable grooves (201) for the connecting rod (20) to be movably adjusted.

2. The water quality detection device for water conservancy projects according to claim 1, characterized in that: A cylindrical sleeve (21) is rotatably connected to the outer contour of the collection barrel (9), and a fixing ring (22) is fixedly connected to the outer contour of the cylindrical sleeve (21) near the bottom end.

3. The water quality detection device for water conservancy projects according to claim 2 is characterized in that: A plurality of uniformly placed scrapers (23) are fixedly connected to the bottom end of the fixing ring (22) near the edge, and the scrapers (23) are in contact with and movably connected to the surface of the filter frame (10). An oblique groove (211) is provided on the outer contour of the cylindrical sleeve (21), and a support block (24) for driving the cylindrical sleeve (21) to reciprocate is fixedly connected to one of the support rods (2), and an end of the support block (24) away from the support rod (2) passes through the inner wall of the oblique groove (211) and is movably connected.

4. The water quality detection device for water conservancy projects according to claim 3 is characterized in that: The bottom end of the filter frame (10) is fixedly connected to a triangular block (25) via a pin shaft, and the three ends of the triangular block (25) are rotatably connected to swing rods (26) via pin shafts, and the bottom end of each swing rod (26) is fixedly connected to a baffle (27) for pushing surrounding water plants outwards.

5. A water quality detection device for water conservancy projects according to claim 4, characterized in that: The three ends of the triangular block (25) are provided with limiting grooves (251) near the center position, and the inner wall of each limiting groove (251) is movably connected to a movable seat (28). The movable seat (28) at each end and the bottom end of the adjusting rod (29) are rotatably connected to an adjusting rod (29) for pulling the baffle (27) to expand or contract via a pin shaft.

6. The water quality detection device for water conservancy projects according to claim 5, characterized in that: A circular plate (30) is rotatably connected to the outer contour of the fixed axis of the triangular block (25) near the top, and the outer contour of the circular plate (30) is fixedly connected to the scraper (23). The circular plate (30) is provided with arc grooves (301) at positions corresponding to the movable seat (28). The inner wall of each arc groove (301) is movably connected to a slider (31) for pulling the movable seat (28) to perform horizontal reciprocating movement. The bottom end of each slider (31) is fixedly connected to the movable seat (28) at the corresponding position.

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