Water conservancy river water quality sampling device and sampling method thereof

Abstract

The application relates to the field of sampling technology, in particular to a water conservancy river water quality sampling device and a sampling method thereof. The device comprises a mounting seat, the top of the mounting seat is fixedly connected with a plurality of sampling boxes which are uniformly distributed in a circle, a plurality of sequentially arranged partition plates are fixedly connected in the sampling boxes, the plurality of partition plates are used for dividing the sampling boxes into a plurality of sampling chambers, the bottom end of the sampling box is fixedly connected with a plurality of water outlet pipes which are matched with the sampling chambers, and valves are arranged on the water outlet pipes; a plurality of water inlet holes matched with the sampling chambers are arranged in the top of the inner wall of the sampling box, a filter plate matched with the water inlet holes is fixedly connected to the top of the sampling box, a plurality of filter holes are arranged in the filter plate, and a cover plate matched with the water inlet hole is arranged in each sampling chamber; the sampling device is put into water once, water at different positions in different depths can be sampled, the sampling efficiency is improved, the space representation is improved, and the sampling deviation is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sampling technology, in particular to a water conservancy river water quality sampling device and a sampling method thereof. BACKGROUND

[0002] Through water quality detection, the types and concentrations of substances contained in the target water body can be confirmed, so as to analyze the water environment status and the influence of engineering construction or the research on the migration and transformation rules of pollutants. Under the condition of having detection conditions such as instruments and equipment and personnel configuration, first, the water quality detection sample of the target water body needs to be obtained, and then the sample is taken back and tested by using the corresponding instrument, so as to draw a conclusion.

[0003] The traditional sampling method is that the sampler binds the sampling device to the lifting device through a rope, the lifting device generally uses a winch, the lifting device and the sampling device are moved to the river to be sampled by a ship, the sampling device is put into the water by the lifting device, when the sampling device reaches the preset depth, sampling is carried out by the sampling device, and when the sampling is completed, the lifting device pulls out the sampling device from the water through the rope.

[0004] However, it is worth thinking that although some sampling devices can be thrown into the water once, and then the water at different depths is sampled, the sampling port at the preset depth is fixed, and when the water at the specified depth is sampled, only the water at one position can be sampled, the data randomness is high, the representativeness is insufficient, the statistical reliability is low, it is difficult to carry out scientific analysis, and there is certain limitation.

[0005] Therefore, in order to solve the above problems, a more suitable related facility needs to appear. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a water conservancy river water quality sampling device and a sampling method thereof, so as to solve the above problems that the sampling port at the preset depth is fixed, and when the water at the specified depth is sampled, only the water at one position can be sampled.

[0007] In order to achieve the above purpose, the present application provides a water conservancy river water quality sampling device, which comprises a mounting seat, a plurality of sampling boxes are fixedly connected to the top of the mounting seat in a circumferentially uniform distribution, a plurality of sequentially arranged partition plates are fixedly connected in the sampling boxes, the plurality of partition plates are used for dividing the sampling boxes into a plurality of sampling chambers, a plurality of water outlet pipes matched with the sampling chambers are fixedly connected to the bottom end of the sampling boxes, and valves are arranged on the water outlet pipes.

[0008] The sampling box has several water inlet holes adapted to the sampling chambers on the top of its inner wall. A filter plate adapted to the water inlet holes is fixedly connected to the top of the sampling box. The filter plate has several filter holes. Each sampling chamber is equipped with a cover plate adapted to the water inlet hole. A support sleeve is provided below the cover plate. A sealing ring is fixedly fitted on the outside of the support sleeve. The sealing ring is fixedly connected to the inner wall of the sampling box and the corresponding partition plate. A rinsing assembly adapted to the filter plate is installed on the sampling box. An opening and closing adjustment structure for driving several cover plates to move vertically is installed on the sampling box.

[0009] Optionally, the opening and closing adjustment structure includes a rectangular ring disposed above the sampling box, a movable plate disposed inside the rectangular ring, two support plates fixedly connected to the top of the cover plate, and the support plates penetrating the filter plate, pressing units adapted to the support plates being disposed on both sides of the movable plate, a reset component for elastically supporting the cover plate being disposed on the sampling box, a support portion located below the rectangular ring being fixedly connected to the side of two adjacent support plates that are far apart from each other, a plurality of hydraulic telescopic rods being fixedly connected to the sampling box, and the telescopic ends of the hydraulic telescopic rods being fixedly connected to the rectangular ring, a cleaner adapted to the filter plate being disposed on the movable plate, and a sliding translation mechanism for driving the movable plate to slide within the rectangular ring being disposed on the mounting base.

[0010] Optionally, the pressing unit includes pressing plates respectively disposed on both sides of the movable plate, and the two sides of the movable plate are in contact with the two pressing plates respectively. The inner walls of both sides of the rectangular ring are respectively provided with guide grooves, and guide blocks located in the guide grooves are fixedly connected to the pressing plates. Two magnet blocks are fixedly connected to the movable plate. The side of the magnet block away from the movable plate is in contact with a first iron plate, and the first iron plate is fixedly connected to the corresponding pressing plate. The bottom end of the pressing plate is provided with an inclined surface adapted to the support plate, and the top of the filter plate is fixedly connected with two positioning blocks adapted to the pressing plates.

[0011] Optionally, the sliding translation mechanism includes at least one guide bar fixedly installed inside a rectangular ring, and the guide bar passes through a movable plate. A pull rope is fixedly connected through the movable plate. A guide shell is fixedly connected to the rectangular ring. Several movable shells adapted to the guide shells are provided above the mounting base. Several first guide wheels are rotatably connected inside the guide shells. Several second guide wheels are rotatably connected inside the movable shells. The pull rope passes through the rectangular ring and is respectively interlaced and wound around the corresponding first and second guide wheels. One end of the pull rope is fixedly connected to the inner wall of the guide shell. An elastic element adapted to the other end of the pull rope is installed on the mounting base. A revolution unit for driving several movable shells to revolve is installed on the mounting base.

[0012] Optionally, the elastic element includes a slider fixedly installed at the end of the pull rope away from the guide shell. The mounting base has a plurality of guide chambers. The number of sliders and guide chambers is the same, and the slider is slidably installed in the corresponding guide chamber. The side of the slider away from the pull rope and the inner wall of the guide chamber are connected by a plurality of first tension springs.

[0013] Optionally, the revolution unit includes a waterproof motor fixedly installed on the top of the mounting base, the output end of the waterproof motor is fixedly connected to a rotating frame located above the mounting base, and a support column is fixedly connected to the bottom of the movable shell, and the support column and the rotating frame are fixedly connected.

[0014] Optionally, a support ring is provided above the mounting base, the bottom of the support ring and the mounting base are fixedly connected by several support blocks, a first guide sleeve is fixedly connected to the bottom of the support column, and the first guide sleeve is slidably sleeved on the outside of the support ring.

[0015] Optionally, the cleaner includes a second iron plate disposed below the movable plate, a third iron plate disposed above the movable plate, and the bottom of the third iron plate is in contact with the top of the magnet block. The top of the second iron plate and the bottom of the third iron plate are fixedly connected by at least one prism. A second guide sleeve is slidably sleeved on the outside of the prism, and the second guide sleeve is fixedly connected to the movable plate. A cleaning brush for cleaning the filter plate is fixedly connected to the second iron plate, and the cleaning brush is in contact with the filter plate.

[0016] Optionally, the reset component includes two movable frames fixedly installed at the bottom of the cover plate, and a support sleeve is fitted over the movable frames. A guide post passes through the movable frame, the top of the guide post is fixedly connected to the bottom of the sealing ring, and a second tension spring is fitted over the guide post. The two ends of the second tension spring are fixedly connected to the bottom of the sealing ring and the movable frame, respectively.

[0017] Optionally, several brackets are fixedly connected to the bottom of the mounting base and the top of the sampling box.

[0018] Optionally, the rinsing assembly includes at least one water inlet pipe disposed inside the sampling box. The end of the water inlet pipe is provided with a valve located outside the sampling box. A support pipe is rotatably sleeved on the outside of the water inlet pipe. Both ends of the support pipe extend to the outside of the sampling box, and the support pipe passes through several adjacent partitions. The support pipe is fixedly connected to the partitions and the sampling box respectively. Several first water outlet holes adapted to the sampling chamber are opened on the support pipe, and the number of first water outlet holes is the same as that of the sampling chamber. Several second water outlet holes adapted to the first water outlet holes are opened on the water inlet pipe. A locking unit adapted to the sampling box is installed on the water inlet pipe.

[0019] Optionally, the locking unit includes a fixing plate fixedly installed on the water inlet pipe, and the fixing plate is located outside the sampling box. A positioning post runs through the fixing plate, and a fixing ring is fixedly sleeved on the outside of the positioning post. The fixing ring is located on the side of the fixing plate facing the sampling box. The fixing ring and the fixing plate are connected by a compression spring. A fixing plate is fixedly connected to the end of the positioning post away from the sampling box. Several positioning sleeves are fixedly connected to the outer wall of the sampling box. The number of positioning sleeves is twice the number of positioning posts. The end of the positioning post away from the fixing plate is located in the corresponding positioning sleeve.

[0020] This invention also provides a method for sampling water quality in river channels of water conservancy projects, applied to the water quality sampling device for river channels of water conservancy projects as described above, comprising the following steps:

[0021] Step 1: The sampling personnel use ropes to attach the sampling device to the lifting equipment, and then use the lifting equipment to lower the sampling device into the water. When the mounting base and sampling box move down to the preset depth, the opening and closing adjustment structure drives the corresponding first cover plate on each sampling box to move down so that the cover plate no longer blocks the corresponding water inlet.

[0022] Step 2: Water passes through the filter plate to filter out large particles of impurities. The filtered water flows to the top of the sealing ring, and finally flows through the gap between the support sleeve and the cover plate to the bottom of the sealing ring.

[0023] Step 3: After the sampling chamber is filled with water, the corresponding cover plate is moved up by the opening and closing adjustment structure. The cover plate blocks and seals the corresponding water inlet hole. The lifting equipment drives the sampling device to move down by rope.

[0024] Step 4: When the mounting base and sampling box descend to the next preset depth, the opening and closing adjustment structure drives the corresponding next cover plate on each sampling box to move down again, so that the cover plate no longer blocks and seals the corresponding water inlet hole. Then return to step 2 until there is water in several sampling chambers in each sampling box.

[0025] Step 5: After the lifting equipment uses ropes to retrieve the sampling device from the water, open the corresponding valve on the water outlet pipe to remove the water from the sampling chamber.

[0026] The beneficial effects of this invention are as follows: When the mounting base and sampling box move down to a preset depth, the opening and closing adjustment structure drives the corresponding first cover plate on each sampling box to move down, so that the cover plate no longer blocks the corresponding water inlet. Water passes through the filter plate to filter out large particles of impurities, and the filtered water flows to the top of the sealing ring. Finally, the water flows through the gap between the support sleeve and the cover plate to the bottom of the sealing ring. When the sampling chamber is filled with water, the opening and closing adjustment structure drives the corresponding cover plate to move up, and the cover plate blocks and seals the corresponding water inlet. The lifting device drives the sampling device to move down via a rope. When the mounting base and sampling box descend to the next preset depth, similarly, the opening and closing adjustment structure drives the corresponding first cover plate on each sampling box to move down again. The next cover plate moves down so that it no longer blocks the corresponding water inlet, allowing water to be filled into the next corresponding sampling chamber. This water filling and sampling process is repeated until all the sampling chambers in each sampling box contain water, thus completing water sampling at different depths. After the mounting base and sampling box are retrieved from the water, the corresponding valve on the outlet pipe is opened to remove the water from the sampling chamber. By immersing the sampling device in the water once, water can be sampled at different locations at different depths, improving sampling efficiency, spatial representativeness, and reducing sampling bias. Using multi-point sampling at different depths and different locations at the same depth can significantly improve the representativeness and reliability of the data. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0029] Figure 2 For the present invention Figure 1 Enlarged structural diagram of region A in the middle;

[0030] Figure 3 This is a schematic diagram of the mounting base according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the guide shell and the movable shell according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the cleaner according to an embodiment of the present invention;

[0033] Figure 6 This is a partial structural diagram of the mounting base in an embodiment of the present invention.

[0034] Figure 7 This is a schematic diagram of the sampling box according to an embodiment of the present invention;

[0035] Figure 8 This is a cross-sectional structural diagram of the sampling box according to an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the structure of the support pipe and the water inlet pipe separated according to an embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure of the support sleeve and the bottom of the sealing ring in an embodiment of the present invention.

[0038] The diagram is marked as follows:

[0039] 1. Mounting base; 2. Sampling box; 3. Partition plate; 4. Water outlet pipe; 5. Water inlet hole; 6. Filter plate; 7. Cover plate; 8. Support sleeve; 9. Sealing ring; 10. Rectangular ring; 11. Pressing plate; 12. Guide groove; 13. Guide block; 14. Movable plate; 15. Pull rope; 16. Support plate; 17. Magnet block; 18. First iron plate; 19. Guide shell; 20. Movable shell; 21. First guide wheel; 22. Second guide wheel; 23. Slider; 24. Guide chamber; 25. First tension spring; 26. Waterproof motor; 27. Rotating frame; 28. Support column; 2 9. Support ring; 30. Support block; 31. First guide sleeve; 32. Positioning block; 33. Cleaning brush; 34. Second iron plate; 35. Third iron plate; 36. Prism; 37. Second guide sleeve; 38. Guide strip; 39. Support part; 40. Movable frame; 41. Guide column; 42. Second tension spring; 43. Support tube; 44. Water inlet pipe; 45. First water outlet; 46. Second water outlet; 47. Fixing plate; 48. Positioning column; 49. Fixing ring; 50. Compression spring; 51. Fixing disc; 52. Positioning sleeve; 53. Bracket; 54. Hydraulic telescopic rod. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0041] Example 1, by Figure 1 , Figure 2 , Figure 7 , Figure 8 and Figure 10 The present invention includes a mounting base 1, a plurality of sampling boxes 2 evenly distributed in a circle are fixedly connected to the top of the mounting base 1, a plurality of partitions 3 arranged in sequence are fixedly connected inside the sampling boxes 2, the plurality of partitions 3 are used to divide the sampling boxes 2 into a plurality of sampling chambers, and a plurality of water outlet pipes 4 adapted to the sampling chambers are fixedly connected to the bottom of the sampling boxes 2, and valves are provided on the water outlet pipes 4;

[0042] The sampling chamber 2 has several water inlet holes 5 on its inner wall top, which are adapted to the sampling chambers. A filter plate 6, adapted to the water inlet holes 5, is fixedly connected to the top of the sampling chamber 2. The filter plate 6 has several filter holes. Each sampling chamber has a cover plate 7 adapted to the water inlet hole 5. A support sleeve 8 is located below the cover plate 7. A sealing ring 9 is fixedly fitted onto the outside of the support sleeve 8, and the sealing ring 9 is fixedly connected to the inner wall of the sampling chamber 2 and the corresponding partition plate 3. A rinsing assembly adapted to the filter plate 6 is installed on the sampling chamber 2. A useful... An opening and closing adjustment structure drives several cover plates 7 to move vertically; the sampling personnel tie the sampling device to the lifting equipment with ropes, and the sampling device is lowered into the water by the lifting equipment. When the mounting base 1 and the sampling box 2 move down to the preset depth, the opening and closing adjustment structure drives the first corresponding cover plate 7 on each sampling box 2 to move down, so that the cover plate 7 no longer blocks the corresponding water inlet 5. The water passes through the filter plate 6 to filter out large particles of impurities, and the filtered water flows to the top of the sealing ring 9. Finally, the water flows through the gap between the support sleeve 8 and the cover plate 7 to... Below the sealing ring 9, after the sampling chamber is filled with water, the corresponding cover plate 7 is moved upward by the opening and closing adjustment structure. The cover plate 7 blocks and seals the corresponding water inlet 5. The lifting device is driven to move downward by the rope. When the mounting base 1 and the sampling box 2 descend to the next preset depth, the corresponding cover plate 7 on each sampling box 2 is moved downward again by the opening and closing adjustment structure so that the cover plate 7 no longer blocks and seals the corresponding water inlet 5. Water can then be filled into the next corresponding sampling chamber. The above water filling and sampling process is repeated until there is water in several sampling chambers in each sampling box 2. This completes the sampling of water at different depths. After the mounting base 1 and the sampling box 2 are taken out of the water, the corresponding valve on the water outlet pipe 4 is opened to take out the water in the sampling chamber. The sampling device can be immersed in the water once to sample water at different depths and locations, which improves sampling efficiency, spatial representativeness, and reduces sampling deviation. Using a multi-point sampling method at different depths and different locations at the same depth can significantly improve the representativeness and reliability of the data.

[0043] Example 2, based on Example 1, is... Figure 1 , Figure 2 , Figure 4 and Figure 7The opening and closing adjustment structure includes a rectangular ring 10 set above the sampling box 2, a movable plate 14 inside the rectangular ring 10, two support plates 16 fixedly connected to the top of the cover plate 7, and the support plates 16 penetrate the filter plate 6. Pressing units adapted to the support plates 16 are respectively provided on both sides of the movable plate 14. The sampling box 2 is provided with a reset part for elastically supporting the cover plate 7. Support parts 39 located below the rectangular ring 10 are fixedly connected to the side of the two adjacent support plates 16 that are far apart. Several hydraulic telescopic rods 54 are fixedly connected to the sampling box 2, and the telescopic ends of the hydraulic telescopic rods 54 are fixedly connected to the rectangular ring 10. A cleaner adapted to the filter plate 6 is provided on the movable plate 14. A sliding translation mechanism for driving the movable plate 14 to slide inside the rectangular ring 10 is provided on the mounting base 1.

[0044] When it is necessary to drive several covers 7 on each sampling box 2 to move vertically in sequence, the movable plate 14 is driven to move by the sliding translation mechanism, and the movable plate 14 drives the cleaner to clean the filter plate 6, ensuring that water can enter the corresponding sampling chamber through the filter plate 6 and the water inlet 5. When the movable plate 14 moves above the corresponding cover 7, the pressing unit on the movable plate 14 presses the support plate 16 to make the support plate 16 and the cover 7 move down. When the corresponding sampling chamber does not need to be filled with water, the movable plate 14 is driven to move by the sliding translation mechanism so that the movable plate 14 is no longer above the corresponding cover 7. The reset member drives the cover 7 and the support plate 16 to move up and reset to the initial height, and the cover 7 can then cover and seal the water inlet 5 again.

[0045] Example 3, based on Example 2, by Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 10The pressing unit includes pressing plates 11 respectively disposed on both sides of the movable plate 14, with each side of the movable plate 14 contacting the two pressing plates 11. Guide grooves 12 are respectively opened on the inner walls of both sides of the rectangular ring 10, and guide blocks 13 located within the guide grooves 12 are fixedly connected to the pressing plates 11. Two magnet blocks 17 are fixedly connected to the movable plate 14, with a first iron plate 18 contacting the side of the magnet block 17 away from the movable plate 14, and the first iron plate 18 is fixedly connected to the corresponding pressing plate 11. The bottom end of the pressing plate 11 has an inclined surface adapted to the support plate 16. Two positioning blocks 32 adapted to the pressing plates 11 are fixedly connected to the top of the filter plate 6. The sliding translation mechanism includes... One guide strip 38 is fixedly installed inside the rectangular ring 10, and the guide strip 38 passes through the movable plate 14. A pull rope 15 is fixedly connected through the movable plate 14. A guide shell 19 is fixedly connected to the rectangular ring 10. Several movable shells 20 adapted to the guide shell 19 are provided above the mounting base 1. Several first guide wheels 21 are rotatably connected inside the guide shell 19, and several second guide wheels 22 are rotatably connected inside the movable shells 20. The pull rope 15 passes through the rectangular ring 10, and the pull rope 15 is respectively interlaced and wound around the corresponding first guide wheel 21 and second guide wheel 22. One end of the pull rope 15 is fixedly connected to the inner wall of the guide shell 19. An elastic element adapted to the other end of the pull rope 15 is installed on the mounting base 1. The mounting base 1 is equipped with a revolution unit for driving several movable shells 20 to revolve. The elastic element includes a slider 23 fixedly mounted on the end of the pull rope 15 away from the guide shell 19. The mounting base 1 has several guide chambers 24, with the number of sliders 23 and guide chambers 24 being the same, and the sliders 23 slidingly mounted within their respective guide chambers 24. The side of the slider 23 away from the pull rope 15 and the inner wall of the guide chamber 24 are connected by several first tension springs 25. The revolution unit includes a waterproof motor 26 fixedly mounted on the top of the mounting base 1. The output end of the waterproof motor 26 is fixedly connected to a rotating frame 27 located above the mounting base 1. A support column 28 is fixedly connected to the bottom of the movable shell 20, and the support... The support column 28 and the rotating frame 27 are fixedly connected. A support ring 29 is provided above the mounting base 1. The bottom of the support ring 29 and the mounting base 1 are fixedly connected by several support blocks 30. A first guide sleeve 31 is fixedly connected to the bottom of the support column 28, and the first guide sleeve 31 is slidably sleeved on the outside of the support ring 29. The reset component includes two movable frames 40 fixedly installed on the bottom of the cover plate 7, and a support sleeve 8 is sleeved on the outside of the movable frames 40. A guide column 41 passes through the movable frame 40. The top of the guide column 41 is fixedly connected to the bottom of the sealing ring 9. A second tension spring 42 is sleeved on the outside of the guide column 41, and the two ends of the second tension spring 42 are fixedly connected to the bottom of the sealing ring 9 and the movable frame 40, respectively.

[0046] The first tension spring 25 is initially in a stretched state, applying tension to the slider 23 and the pull rope 15 to keep the pull rope 15 taut. The waterproof motor 26 drives the rotating frame 27 and support column 28 to rotate, which in turn drives the movable shell 20 to move relative to the guide shell 19. This controls the distance between the first guide wheel 21 and the second guide wheel 22, causing the second guide wheel 22 to pull the movable plate 14 relative to the rectangular ring 10 via the pull rope 15. The pull rope 15 also pulls the slider 23 relative to the guide chamber 24. As the length of the first tension spring 25 increases, the movable plate 14 slides relative to the guide bar 38. The movable plate 14 drives the pressing plate 11 to move synchronously via the magnet 17 and the first iron plate 18. The pressing plate 11 drives the guide block 13 to slide within the guide groove 12. The design of the guide groove 12 and the guide block 13 ensures that the pressing plate 11 slides smoothly relative to the rectangular ring 10. As the pressing plate 11 continues to move, the inclined surface on the pressing plate 11 and the corresponding support... When the support plates 16 are in contact, the top of the support plate 16 slides on the inclined surface of the pressing plate 11. The pressing plate 11 can then press the corresponding support plate 16 and cover plate 7 downwards. The cover plate 7 drives the movable frame 40 to move downwards relative to the guide post 41 and sealing ring 9. The second tension spring 42 is in a stretched state, so that the cover plate 7 no longer blocks and seals the water inlet hole 5. When it is necessary to block and seal the water inlet hole 5 again, the pull rope 15 pulls the movable plate 14 to slide continuously relative to the rectangular ring 10. The pressing plate 11 moves away from the support plate 16. As the top of 6 slides over, the second tension spring 42 drives the movable frame 40 and the cover plate 7 to move upward until the top of the cover plate 7 abuts against the top of the inner wall of the sampling box 2 again, so that the cover plate 7 can block and seal the water inlet hole 5 again. When the support ring 29 drives the support column 28 to rotate, the support column 28 drives the first guide sleeve 31 to slide on the support ring 29. Through the design of the support ring 29, the support block 30 and the first guide sleeve 31, the support column 28 and the movable shell 20 can rotate smoothly relative to the mounting base 1.

[0047] Example 4, based on Example 3, by Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 9The cleaner includes a second iron plate 34 disposed below the movable plate 14, a third iron plate 35 disposed above the movable plate 14, and the bottom of the third iron plate 35 contacting the top of the magnet block 17. The top of the second iron plate 34 and the bottom of the third iron plate 35 are fixedly connected by at least one prism 36. A second guide sleeve 37 is slidably sleeved on the outside of the prism 36, and the second guide sleeve 37 is fixedly connected to the movable plate 14. A cleaning brush 3 for cleaning the filter plate 6 is fixedly connected to the second iron plate 34. 3. The cleaning brush 33 is in contact with the filter plate 6. Several brackets 53 are fixedly connected to the bottom of the mounting base 1 and the top of the sampling box 2. The rinsing assembly includes at least one water inlet pipe 44 disposed inside the sampling box 2. The end of the water inlet pipe 44 is provided with a valve located outside the sampling box 2. A support pipe 43 is rotatably sleeved on the outside of the water inlet pipe 44. Both ends of the support pipe 43 extend to the outside of the sampling box 2, and the support pipe 43 passes through several adjacent partitions 3. The support pipe 43 is connected to the partitions 3 and the sampling box respectively. 2. Fixed connection: The support pipe 43 has several first water outlet holes 45 adapted to the sampling chamber, and the number of first water outlet holes 45 is the same as the number of sampling chambers. The inlet pipe 44 has several second water outlet holes 46 adapted to the first water outlet holes 45. The inlet pipe 44 is equipped with a locking unit adapted to the sampling box 2. The locking unit includes a fixing plate 47 fixedly installed on the inlet pipe 44, and the fixing plate 47 is located outside the sampling box 2. A positioning post 48 passes through the fixing plate 47. The positioning post 48 is externally fixed with a fixing ring 49, and the fixing ring 49 is located on the side of the fixing plate 47 facing the sampling box 2. The fixing ring 49 and the fixing plate 47 are connected by a compression spring 50. The end of the positioning post 48 away from the sampling box 2 is fixedly connected with a fixing plate 51. Several positioning sleeves 52 are fixedly connected to the outer wall of the sampling box 2. The number of positioning sleeves 52 is twice the number of positioning posts 48. The end of the positioning post 48 away from the fixing plate 51 is located in the corresponding positioning sleeve 52.

[0048] When the movable plate 14 moves within the rectangular ring 10, the magnet 17 and the third iron plate 35 are magnetically attracted. The movable plate 14 drives the second iron plate 34 and the cleaning brush 33 to move synchronously through the third iron plate 35 and the prism 36. Before the movable plate 14 moves above the cover plate 7, as the movable plate 14 continues to move, the cleaning brush 33 first cleans a portion of the filter plate 6 located above the water inlet 5, ensuring that water can enter the corresponding sampling chamber through the filter plate 6 and the water inlet 5. When the sampling is completed and the filter plate 6 needs to be thoroughly cleaned, the sampling personnel drive the mounting base 1 to rotate 180 degrees, supporting the sampling device through the bracket 53 originally located above the sampling box 2. At this time, the filter plate 6 is located below the sampling box 2, and the sampling personnel drive the fixed position. The disc 51, positioning post 48, and fixing ring 49 move, compressing the spring 50 so that the positioning post 48 disengages from the corresponding positioning sleeve 52, releasing the restriction on the position of the inlet pipe 44. The sampling personnel drive the inlet pipe 44 to rotate relative to the support pipe 43 so that the second outlet 46 and the first outlet 45 are aligned, and the positioning post 48 moves to one side of the other corresponding positioning sleeve 52. The sampling personnel drive the fixing disc 51 and positioning post 48 to move so that the end of the positioning post 48 is inserted into the corresponding positioning sleeve 52, thus fixing the inlet pipe 44 relative to the support pipe 43 and the sampling box 2, preventing the inlet pipe 44 from rotating or shaking relative to the support pipe 43 and the sampling box 2. The rectangular ring 10 is driven to move toward the sampling box 2 via the hydraulic telescopic rod 54. The rectangular ring 10 contacts the support part 39, and the rectangular ring 10 drives the support part 39 and the support plate 16 to move synchronously until the cover plate 7 and the support sleeve 8 abut against each other. The cover plate 7 blocks and seals the support sleeve 8, isolating the space inside the sampling chamber. The pressing plate 11 abuts against the corresponding positioning block 32. The pressing plate 11 is fixed relative to the positioning block 32 and the sampling box 2. During the movement of the rectangular ring 10, the height of the cleaning brush 33, the second iron plate 34, the prism 36 and the third iron plate 35 remains unchanged. The movable plate 14 and the second guide sleeve 37 move relative to the prism 36. The magnet block 17 contacts the second iron plate 34, and the magnet block 17 no longer contacts the third iron plate 35. At this time, the first tension spring 25 applies a pulling force to the slider 23, through the anti- The water motor 26 drives the rotating frame 27 to rotate in both directions, causing the movable plate 14 to slide relative to the rectangular ring 10. The movable plate 14 then drives the cleaning brush 33 to reciprocate on the surface of the filter plate 6 via the magnet 17 and the second iron plate 34. The movable plate 14 drives the magnet 17 to no longer contact the first iron plate 18, and the pressing plate 11 remains stationary. The fixed relationship between the movable plate 14 and the pressing plate 11 is released, and the valve on the water inlet pipe 44 is opened. At this time, the external cleaning fluid is injected into the water inlet pipe 44 by the water pump. The water in the water inlet pipe 44 enters the sampling chamber between the sealing ring 9 and the water inlet 5 through the second water outlet 46 and the first water outlet 45. Finally, the cleaning fluid is discharged through the water inlet 5, and the water discharged through the water inlet 5 impacts the filter plate 6 in the reverse direction.This allows impurities clogging the filter holes of filter plate 6 to be removed, eliminating the need for manual cleaning and simplifying future maintenance.

[0049] This embodiment also provides a method for sampling water quality in river channels of water conservancy projects, applied to the water quality sampling device for river channels of water conservancy projects as described above, including the following steps:

[0050] Step 1: The sampling personnel use ropes to tie the sampling device to the lifting equipment, and use the lifting equipment to put the sampling device into the water. When the mounting base 1 and the sampling box 2 move down to the preset depth, the opening and closing adjustment structure drives the corresponding first cover plate 7 on each sampling box 2 to move down so that the cover plate 7 no longer blocks the corresponding water inlet 5.

[0051] Step 2: Water passes through filter plate 6 to filter out large particles of impurities. The filtered water flows to the top of sealing ring 9, and finally flows through the gap between support sleeve 8 and cover plate 7 to the bottom of sealing ring 9.

[0052] Step 3: After the sampling chamber is filled with water, the corresponding cover plate 7 is moved upward by the opening and closing adjustment structure. The cover plate 7 blocks and seals the corresponding water inlet 5. The lifting device is driven to move the sampling device downward by the rope.

[0053] Step 4: When the mounting base 1 and the sampling box 2 descend to the next preset depth, the corresponding next cover plate 7 on each sampling box 2 is driven to move down again by the opening and closing adjustment structure so that the cover plate 7 no longer blocks and seals the corresponding water inlet 5. Then, return to step 2 until there is water in several sampling chambers in each sampling box 2.

[0054] Step 5: After the lifting equipment retrieves the sampling device from the water using ropes, open the corresponding valve on the water outlet pipe 4 to remove the water from the sampling chamber.

[0055] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A water quality sampling device for river channels in water conservancy projects, comprising a mounting base (1), characterized in that, The top of the mounting base (1) is fixedly connected to several sampling boxes (2) evenly distributed in a circle. Several partitions (3) are fixedly connected inside the sampling boxes (2). The partitions (3) are used to divide the sampling boxes (2) into several sampling chambers. Several water outlet pipes (4) that are adapted to the sampling chambers are fixedly connected to the bottom of the sampling boxes (2). Valves are provided on the water outlet pipes (4). The sampling box (2) has several water inlet holes (5) adapted to the sampling chambers on the top of its inner wall. A filter plate (6) adapted to the water inlet holes (5) is fixedly connected to the top of the sampling box (2). Several filter holes are provided on the filter plate (6). Each sampling chamber is provided with a cover plate (7) adapted to the water inlet holes (5). A support sleeve (8) is provided below the cover plate (7). A sealing ring (9) is fixedly fitted on the outside of the support sleeve (8). The sealing ring (9) is fixedly connected to the inner wall of the sampling box (2) and the corresponding partition (3). A rinsing assembly adapted to the filter plate (6) is installed on the sampling box (2). An opening and closing adjustment structure for driving several cover plates (7) to move vertically is installed on the sampling box (2). The opening and closing adjustment structure includes a rectangular ring (10) set above the sampling box (2), a movable plate (14) is provided inside the rectangular ring (10), two support plates (16) are fixedly connected to the top of the cover plate (7), and the support plates (16) penetrate the filter plate (6). Pressing units adapted to the support plates (16) are provided on both sides of the movable plate (14). The sampling box (2) is provided with a reset part for elastically supporting the cover plate (7). Support parts (39) located below the rectangular ring (10) are fixedly connected to the side of the two adjacent support plates (16) that are far apart. Several hydraulic telescopic rods (54) are fixedly connected to the sampling box (2), and the telescopic ends of the hydraulic telescopic rods (54) are fixedly connected to the rectangular ring (10). A cleaner adapted to the filter plate (6) is provided on the movable plate (14). A sliding translation mechanism for driving the movable plate (14) to slide inside the rectangular ring (10) is provided on the mounting base (1).

2. The water quality sampling device for river channels in water conservancy projects according to claim 1, characterized in that, The pressing unit includes pressing plates (11) respectively disposed on both sides of the movable plate (14), and the two sides of the movable plate (14) are in contact with the two pressing plates (11) respectively. The inner walls of the two sides of the rectangular ring (10) are respectively provided with guide grooves (12), and the pressing plate (11) is fixedly connected with a guide block (13) located in the guide groove (12). The movable plate (14) is fixedly connected with two magnet blocks (17). The side of the magnet block (17) away from the movable plate (14) is in contact with a first iron plate (18), and the first iron plate (18) and the corresponding pressing plate (11) are fixedly connected. The bottom end of the pressing plate (11) is provided with an inclined surface adapted to the support plate (16), and the top of the filter plate (6) is fixedly connected with two positioning blocks (32) adapted to the pressing plate (11).

3. The water quality sampling device for river channels in water conservancy projects according to claim 1, characterized in that, The sliding translation mechanism includes at least one guide bar (38) fixedly installed in a rectangular ring (10), and the guide bar (38) passes through a movable plate (14). A pull rope (15) is fixedly connected through the movable plate (14). A guide shell (19) is fixedly connected to the rectangular ring (10). Several movable shells (20) adapted to the guide shell (19) are provided above the mounting base (1). Several first guide wheels (21) are rotatably connected inside the guide shell (19). Several second guide wheels (22) are rotatably connected inside the movable shell (20). The pull rope (15) passes through the rectangular ring (10), and the pull rope (15) is interlaced and wound around the corresponding first guide wheel (21) and second guide wheel (22). One end of the pull rope (15) is fixedly connected to the inner wall of the guide shell (19). An elastic element adapted to the other end of the pull rope (15) is installed on the mounting base (1). A revolution unit for driving several movable shells (20) to revolve is installed on the mounting base (1).

4. The water quality sampling device for river channels in water conservancy projects according to claim 3, characterized in that, The elastic element includes a slider (23) fixedly installed on the end of the pull rope (15) away from the guide shell (19). The mounting base (1) has a plurality of guide chambers (24). The number of sliders (23) and guide chambers (24) is the same, and the slider (23) is slidably installed in the corresponding guide chamber (24). The side of the slider (23) away from the pull rope (15) and the inner wall of the guide chamber (24) are connected by a plurality of first tension springs (25).

5. The water quality sampling device for river channels in water conservancy projects according to claim 3, characterized in that, The revolution unit includes a waterproof motor (26) fixedly installed on the top of the mounting base (1). The output end of the waterproof motor (26) is fixedly connected to a rotating frame (27) located above the mounting base (1). The bottom of the movable shell (20) is fixedly connected to a support column (28), and the support column (28) and the rotating frame (27) are fixedly connected.

6. The water quality sampling device for river channels in water conservancy projects according to claim 5, characterized in that, The mounting base (1) is provided with a support ring (29) above it. The bottom of the support ring (29) and the mounting base (1) are fixedly connected by several support blocks (30). The bottom of the support column (28) is fixedly connected with a first guide sleeve (31), and the first guide sleeve (31) is slidably sleeved on the outside of the support ring (29).

7. The water quality sampling device for river channels in water conservancy projects according to claim 2, characterized in that, The cleaner includes a second iron plate (34) disposed below the movable plate (14), a third iron plate (35) disposed above the movable plate (14), and the bottom of the third iron plate (35) and the top of the magnet block (17) are in contact. The top of the second iron plate (34) and the bottom of the third iron plate (35) are fixedly connected by at least one prism (36). A second guide sleeve (37) is slidably sleeved on the outside of the prism (36), and the second guide sleeve (37) and the movable plate (14) are fixedly connected. A cleaning brush (33) for cleaning the filter plate (6) is fixedly connected on the second iron plate (34), and the cleaning brush (33) and the filter plate (6) are in contact.

8. The water quality sampling device for river channels in water conservancy projects according to claim 1, characterized in that, The reset component includes two movable frames (40) fixedly installed at the bottom of the cover plate (7), and a support sleeve (8) is sleeved on the outside of the movable frames (40). A guide post (41) passes through the movable frame (40). The top of the guide post (41) and the bottom of the sealing ring (9) are fixedly connected. A second tension spring (42) is sleeved on the outside of the guide post (41), and the two ends of the second tension spring (42) are fixedly connected to the bottom of the sealing ring (9) and the movable frame (40) respectively.

9. The water quality sampling device for river channels in water conservancy projects according to claim 1, characterized in that, Several brackets (53) are fixedly connected to the bottom of the mounting base (1) and the top of the sampling box (2).

10. The water quality sampling device for river channels in water conservancy projects according to claim 1, characterized in that, The rinsing assembly includes at least one water inlet pipe (44) disposed in the sampling box (2). The end of the water inlet pipe (44) is provided with a valve located outside the sampling box (2). A support pipe (43) is rotatably sleeved on the outside of the water inlet pipe (44). The two ends of the support pipe (43) extend to the outside of the sampling box (2) respectively, and the support pipe (43) passes through several adjacent partitions (3). The support pipe (43) is fixedly connected to the partitions (3) and the sampling box (2) respectively. Several first water outlet holes (45) adapted to the sampling chamber are opened on the support pipe (43), and the number of first water outlet holes (45) is the same as that of the sampling chamber. Several second water outlet holes (46) adapted to the first water outlet holes (45) are opened on the water inlet pipe (44). A locking unit adapted to the sampling box (2) is installed on the water inlet pipe (44).

11. The water quality sampling device for river channels in water conservancy projects according to claim 10, characterized in that, The locking unit includes a fixing plate (47) fixedly installed on the water inlet pipe (44), and the fixing plate (47) is located outside the sampling box (2). A positioning post (48) passes through the fixing plate (47). A fixing ring (49) is fixedly sleeved on the outside of the positioning post (48), and the fixing ring (49) is located on the side of the fixing plate (47) facing the sampling box (2). The fixing ring (49) and the fixing plate (47) are connected by a compression spring (50). A fixing plate (51) is fixedly connected to the end of the positioning post (48) away from the sampling box (2). Several positioning sleeves (52) are fixedly connected to the outer wall of the sampling box (2). The number of positioning sleeves (52) is twice the number of positioning posts (48), and the end of the positioning post (48) away from the fixing plate (51) is located in the corresponding positioning sleeve (52).

12. A method for sampling water quality in a river channel of a water conservancy project, applied to the water quality sampling device for a river channel of a water conservancy project as described in claim 1, characterized in that: Includes the following steps: Step 1: The sampling personnel use ropes to tie the sampling device to the lifting equipment and use the lifting equipment to put the sampling device into the water. When the mounting base (1) and the sampling box (2) move down to the preset depth, the sliding translation mechanism drives the movable plate (14) to move, and the movable plate (14) drives the cleaner to clean the filter plate (6) to ensure that the water can enter the corresponding sampling chamber through the filter plate (6) and the water inlet (5). When the movable plate (14) moves to the top of the corresponding cover plate (7), the pressing unit on the movable plate (14) presses the support plate (16) to make the support plate (16) and the cover plate (7) move down. The opening and closing adjustment structure drives the first corresponding cover plate (7) on each sampling box (2) to move down so that the cover plate (7) no longer blocks the corresponding water inlet (5). Step 2: Water passes through the filter plate (6) to filter out large particles of impurities. The filtered water flows to the top of the sealing ring (9) and finally flows through the gap between the support sleeve (8) and the cover plate (7) to the bottom of the sealing ring (9). Step 3: After the sampling chamber is filled with water, the movable plate (14) is moved by the sliding translation mechanism so that the movable plate (14) is no longer above the corresponding cover plate (7). The reset component drives the cover plate (7) and the support plate (16) to move up and reset to the initial height. The cover plate (7) blocks and seals the corresponding water inlet (5). The lifting device drives the sampling device to move down by the rope. Step 4: When the mounting base (1) and the sampling box (2) descend to the next preset depth, the corresponding next cover plate (7) on each sampling box (2) is driven to move down again by the opening and closing adjustment structure so that the cover plate (7) no longer blocks and seals the corresponding water inlet (5), and return to step 2 until there is water in several sampling chambers in each sampling box (2); Step 5: After the lifting equipment uses ropes to lift the sampling device out of the water, open the corresponding valve on the water outlet pipe (4) to remove the water from the sampling chamber.

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