Water quality analysis instrument for water conservancy drainage

Abstract

The utility model relates to the field of water quality analysis instruments, in particular to a water conservancy drainage water quality analysis instrument which comprises a protection box, a cover plate is placed at the upper end of the protection box, and a fixed box is fixedly connected to the bottom face of the inner wall of the protection box. According to the utility model, the filter plate in the filter detection mechanism is obliquely arranged, and the water outlet end of the water inlet pipe is positioned below the filter plate, so that solid substances are intercepted below the filter plate after water is filtered by the filter plate, and purified water flows out from the first pipe body above the filter plate; the detection probe is installed at the lower end of the insertion column and located in the water body above the filter plate in the fixing box, direct contact of the detection probe with solid substances in the complex water body is avoided, pollution of the sensor is reduced, meanwhile, the insertion column and the fixing disc can be taken out of the first fixing cylinder, maintenance and cleaning of the detection probe are facilitated, and data accuracy is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water quality analysis instrument field, concretely relates to water conservancy drainage water quality analysis instrument. BACKGROUND

[0002] With the urbanization process accelerates and environmental protection standard promotes, the water quality monitoring demand of water conservancy drainage system is increasingly prominent, and the traditional water quality analysis depends on laboratory detection, and there are problems such as sampling lag, long cycle, high labor cost, and it is difficult to timely feedback water body change.

[0003] In recent years, online water quality analysis instrument realizes the real-time monitoring of pH value, dissolved oxygen, COD (chemical oxygen demand), ammonia nitrogen, turbidity and other key parameters through integrating sensor technology, internet of things transmission and automatic control, and significantly improves the management efficiency of drainage system, but due to the uneven water quality composition in drainage pipeline, complex water environment is easy to cause sensor pollution, affect data accuracy, it is inconvenient to detect the solid material in the sampled water body after rapid separation from water body, it is difficult to compare and detect the water quality after preliminary purification, and further improvement is needed. UTILITY MODEL CONTENT

[0004] In order to overcome the problems that the existing online water quality analysis instrument is easy to be polluted by complex water body, leading to the decrease of data accuracy, the solid material is inconvenient to separate from water body, and it is difficult to compare and detect the water quality after preliminary purification, therefore, water conservancy drainage water quality analysis instrument is proposed.

[0005] The technical scheme of the utility model is: water conservancy drainage water quality analysis instrument, including the protection box, the left end of the protection box is penetrated and fixed with the water inlet pipe and the water outlet pipe, the upper end of the protection box is placed with the cover plate, the inner wall bottom surface of the protection box is fixed with the fixed box, the right end of the water inlet pipe penetrates through the protection box and extends to the inside of the fixed box, the fixed box is provided with the filter detection mechanism, the right end of the fixed box is penetrated and fixed with the first pipe body, the right end of the first pipe body is fixed with the second pipe body, the side wall of the second pipe body is fixed with the protection body, the lower end of the protection body is provided with the liquid connection mechanism, the liquid outlet end of the second pipe body is connected with the secondary filter mechanism, and the liquid outlet end of the secondary filter mechanism is connected to the liquid inlet end of the water outlet pipe.

[0006] The upper end of the water outlet pipe is penetrated and fixed with the third fixed cylinder, the lower end of the third fixed cylinder is fixed with the liquid outlet pipe, the second electromagnetic valve is installed on the liquid outlet pipe, the first collection box is screw-mounted on the lower part of the side wall of the liquid outlet pipe, the blocking column is placed in the inner wall of the third fixed cylinder, the through hole is penetrated and arranged on the side wall of the third fixed cylinder, and the gap is arranged between the side wall of the third fixed cylinder and the inner wall of the water outlet pipe.

[0007] The inner wall bottom surface of the protection box is placed with the first water quality analysis instrument and the second water quality analysis instrument, and the first water quality analysis instrument is electrically connected with the filter detection mechanism.

[0008] Further, a first slot is formed through one side of the protection box, a first sliding door is hingedly connected to one side of the inner wall of the first slot, the first sliding door is matched with the first slot, a third slot is formed through the other side of the protection box, a second sliding door is hingedly connected to one side of the inner wall of the third slot, the second sliding door is matched with the third slot; when the first sliding door is located in the first slot and the second sliding door is located in the third slot, the protection box, the first sliding door, the cover plate and the second sliding door jointly form a sealed box structure.

[0009] Further, an electric valve is arranged on the water inlet pipe, handles are fixedly connected to the left and right ends of the protection box, and a first electromagnetic valve is arranged on the second pipe body.

[0010] Further, the lower end of the cover plate is fixedly connected with a limiting plate, a second slot is formed through the upper end of the protection box, and the inner wall of the second slot is attached to the side wall of the limiting plate.

[0011] Further, the filtering and detecting mechanism comprises a first fixing cylinder, a plug column, a fixing disc, a detecting probe and a filter plate; the filter plate is fixedly connected to the inner wall of the fixed box and is arranged obliquely, the water outlet end of the water inlet pipe is located below the filter plate, the water inlet end of the first pipe body is located above the filter plate, the first fixing cylinder is fixedly connected to the upper end of the fixed box in a penetrating manner, the plug column is placed in the first fixing cylinder, the fixing disc is fixedly connected to the upper part of the side wall of the plug column, the lower end of the fixing disc is attached to the upper end of the first fixing cylinder, the detecting probe is fixedly connected to the lower end of the plug column, and the detecting probe is electrically connected with the first water quality analyzer.

[0012] Further, the liquid receiving mechanism comprises a cross block and a plastic box; the lower end of the protection body is fixedly connected with a U-shaped seat, the inner walls of the two sides of the U-shaped seat are rotatably installed with the cross block, the upper end of the cross block is formed with a cross slot, a plurality of insertion holes are formed through the lower end of the cross slot, the lower end of the protection body is fixedly connected with two fixing blocks, a first screw hole is formed in one side of the fixing block, a screw rod is threadedly installed in the inner wall of the first screw hole, the plastic box is placed in the inner wall of the cross slot, a cross-shaped slot body is formed in the upper end of the plastic box, a plurality of insertion cylinders are fixedly connected to the lower end of the plastic box in a penetrating manner, the side wall of the insertion cylinder is attached to the inner wall of the insertion hole, a second collecting box is threadedly installed on the lower part of the side wall of the insertion cylinder, a second screw hole is formed through one side of the cross block, the inner wall of the second screw hole is threadedly connected with the side wall of the screw rod, a third pipe body is fixedly connected to the lower end of the second pipe body, the third pipe body extends through the protection body and is located below the protection body, a third electromagnetic valve is arranged on the third pipe body, and the lower end of the third pipe body is located directly above the cross block.

[0013] Further, legs are fixedly connected to the lower end of the protection body.

[0014] Further, the secondary filtering mechanism comprises a support, a rotating block, a second fixing cylinder and a filter disc; the support is fixedly connected to the inner wall bottom surface of the protection box, rotating blocks are rotatably installed on the inner wall of the two sides of the support, the side wall of the rotating block is fixedly connected with the second fixing cylinder, the inner wall of the second fixing cylinder is threadedly installed with the filter disc, one end of the second fixing cylinder is installed on the flange of the liquid outlet port of the second pipe body through bolts, and the other end of the second fixing cylinder is installed on the flange of the liquid inlet end of the water outlet pipe through bolts.

[0015] The utility model discloses beneficial effects:

[0016] 1. Through the oblique setting of the filter plate in the filtering detection mechanism, the water outlet end of the water inlet pipe is located below the filter plate, after the water body is filtered through the filter plate, solid substances are intercepted below the filter plate, and the pure water body flows out from the first pipe body above the filter plate, the detection probe is installed at the lower end of the inserting column and located in the water body above the filter plate in the fixed box, which avoids the direct contact of the detection probe with the solid substances in the complex water body, reduces the pollution of the sensor, the inserting column and the fixed disc can be taken out from the first fixing cylinder, the detection probe is convenient to maintain and clean, and the data accuracy is guaranteed.

[0017] 2. In the liquid receiving mechanism, the lower end of the third pipe body is located directly above the cross block, when sampling detection is needed, the third electromagnetic valve is opened, the liquid in the second pipe body flows into the plastic box through the third pipe body, and finally falls into the second collecting box through the liquid outlet pipe for collection, the cross block is connected with the fixed block through a screw rod, after the screw rod is removed, the cross block can be rotated to drive the plastic box to rotate, and different plastic boxes are convenient to replace.

[0018] 3. In the secondary filtering mechanism, the second fixing cylinder is installed on the support through the rotating block, the filter disc is threadedly installed in the second fixing cylinder, the water body enters the secondary filtering mechanism through the first pipe body and the second pipe body, flows into the water outlet pipe after being filtered twice through the filter disc, the first water quality analyzer arranged in the protection box is electrically connected with the detection probe of the filtering detection mechanism, is used for detecting the preliminary purified water above the filter plate, the first water quality analyzer can also directly detect the liquid temporarily stored by the liquid receiving mechanism, the second water quality analyzer can detect the water quality after the secondary filtering mechanism, comparison is carried out through the three, the detection and analysis of the water quality at different purification stages are realized, and the filter disc can be disassembled and replaced, and the detection flexibility is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The utility model discloses a three-dimensional structure schematic diagram of the utility model shows;

[0020] Figure 2 The utility model discloses a three-dimensional structure schematic diagram of the protection box of the utility model shows;

[0021] Figure 3 The utility model discloses an inside three-dimensional structure schematic diagram of the protection box of the utility model shows;

[0022] Figure 4 The second pipe body of the utility model is shown as a perspective structure schematic view.

[0023] Figure 5 The fixed box of the utility model is shown as a perspective structure schematic view of the inside.

[0024] Figure 6 The fixed cylinder of the utility model is shown as a perspective structure schematic view.

[0025] Figure 7 The filter disc of the utility model is shown as a perspective structure schematic view.

[0026] Figure 8 The water outlet pipe of the utility model is shown as a perspective structure schematic view of a section.

[0027] Figure 9 The cross block of the utility model is shown as a perspective structure schematic view.

[0028] Figure 10 The cross slot of the utility model is shown as a perspective structure schematic view.

[0029] Figure 11 The insertion cylinder and the second collecting box of the utility model are shown as a perspective split structure schematic view.

[0030] Figure 12 The insertion cylinder and the third pipe body of the utility model are shown as a perspective structure schematic view.

[0031] The signs in the drawings are: 1, the protection box; 2, the water inlet pipe; 3, the water outlet pipe; 4, the first groove body; 5, the first sliding door; 6, the cover plate; 7, the second groove body; 8, the third groove body; 9, the second sliding door; 10, the handle; 11, the first water quality analyzer; 12, the second water quality analyzer; 13, the fixed box; 14, the first pipe body; 15, the protection body; 16, the supporting leg; 17, the second pipe body; 18, the first electromagnetic valve; 19, the first fixed cylinder; 20, the insertion column; 21, the fixed disc; 22, the detection probe; 23, the filter plate; 24, the support; 25, the rotating block; 26, the second fixed cylinder; 27, the filter disc; 28, the third fixed cylinder; 29, the through hole; 30, the liquid outlet pipe; 31, the second electromagnetic valve; 32, the first collecting box; 33, the blocking column; 34, the U-shaped seat; 35, the cross block; 36, the fixed block; 37, the screw rod; 38, the cross slot; 39, the insertion hole; 40, the plastic box; 41, the insertion cylinder; 42, the second collecting box; 43, the third pipe body; 44, the third electromagnetic valve. DETAILED DESCRIPTION

[0032] The utility model will be further explained in connection with the drawings and examples.

[0033] Example 1: Please refer to Figures 1-12 The water quality analysis instrument for water conservancy and drainage includes a protective box 1; an inlet pipe 2 and an outlet pipe 3 are fixedly connected through the left end of the protective box 1; a cover plate 6 is placed on the upper end of the protective box 1; a fixed box 13 is fixedly connected to the bottom surface of the inner wall of the protective box 1; the right end of the inlet pipe 2 passes through the protective box 1 and extends into the interior of the fixed box 13; a filtration and detection mechanism is provided inside the fixed box 13; a first tube body 14 is fixedly connected through the right end of the fixed box 13; a second tube body 17 is fixedly connected to the right end of the first tube body 14; a protective body 15 is fixedly connected to the side wall of the second tube body 17; a liquid receiving mechanism is provided at the lower end of the protective body 15; a secondary filtration mechanism is connected to the liquid outlet end of the second tube body 17; and the liquid outlet end of the secondary filtration mechanism is connected to the liquid inlet end of the outlet pipe 3.

[0034] A third fixed cylinder 28 is fixedly connected to the upper end of the water outlet pipe 3. A liquid outlet pipe 30 is fixedly connected to the lower end of the third fixed cylinder 28. A second solenoid valve 31 is installed on the liquid outlet pipe 30. A first collection box 32 is threaded on the lower part of the side wall of the liquid outlet pipe 30. A baffle 33 is placed on the inner wall of the third fixed cylinder 28. A through hole 29 is opened through the side wall of the third fixed cylinder 28. There is a gap between the side wall of the third fixed cylinder 28 and the inner wall of the water outlet pipe 3.

[0035] The bottom of the inner wall of the protective box 1 is equipped with a first water quality analyzer 11 and a second water quality analyzer 12. The first water quality analyzer 11 is electrically connected to the filter detection mechanism.

[0036] In use, connect the sewage pipe to the inlet port of the inlet pipe 2. Turn on the sewage and let it pass through the fixed box 13. The solid impurities in the fixed box 13 are separated by the filtration and detection mechanism. The liquid will flow into the second pipe 17 through the first pipe 14. At this time, the liquid in the second pipe 17 can be sampled by the liquid receiving mechanism and then tested by the second water quality analyzer 12. The liquid will then pass through the secondary filtration mechanism. After secondary filtration, manually lift the baffle 33 upward. The liquid will flow into the third fixed cylinder 28 through the through hole 29. Then open the second solenoid valve 31 to let the liquid filtered in the secondary filtration flow into the first collection box 32 through the liquid outlet pipe 30. After removing the first collection box 32, use the first water quality analyzer 11 to test the liquid at this time. The liquid after solid-liquid separation and the water composition in the liquid after secondary filtration can be obtained, which is convenient for testing the filtration effect of the secondary filtration mechanism.

[0037] Please see Figures 1-3In this embodiment, a first groove 4 is provided through one side of the protective box 1, and a first sliding door 5 is hinged to one side of the inner wall of the first groove 4. The first sliding door 5 and the first groove 4 are compatible. A third groove 8 is provided through the other side of the protective box 1, and a second sliding door 9 is hinged to one side of the inner wall of the third groove 8. The second sliding door 9 and the third groove 8 are compatible. When the first sliding door 5 is located in the first groove 4 and the second sliding door 9 is located in the third groove 8, the protective box 1, the first sliding door 5, the cover plate 6 and the second sliding door 9 together constitute a sealed box structure. The first sliding door 5 and the second sliding door 9, together with the protective box 1 and the cover plate 6, form a sealed box structure, which can effectively isolate external dust, water vapor and other impurities, and protect the internal parts such as the first water quality analyzer 11 and the second water quality analyzer 12. At the same time, the first sliding door 5 and the second sliding door 9 are hinged to the groove, which makes it convenient for staff to open from both sides to maintain and repair the internal structure.

[0038] Please see Figure 1 , Figure 3 and Figure 4 In this embodiment, an electric valve is provided on the water inlet pipe 2, and handles 10 are fixedly connected to both ends of the protective box 1. A first solenoid valve 18 is provided on the second pipe body 17. The electric valve of the water inlet pipe 2 can accurately control the water inlet opening and closing and the flow rate. In conjunction with the first solenoid valve 18 of the second pipe body 17, the water flow path can be flexibly adjusted to meet the water flow control requirements of different detection stages. The handles 10 at both ends of the protective box 1 facilitate the handling and movement of the equipment.

[0039] Please see Figures 1-3 In this embodiment, a limiting plate is fixedly connected to the lower end of the cover plate 6, and a second groove 7 is provided through the upper end of the protective box 1. The inner wall of the second groove 7 is fitted with the side wall of the limiting plate. The limiting plate at the lower end of the cover plate 6 is fitted with the inner wall of the second groove 7 at the upper end of the protective box 1, which can accurately position the cover plate 6 and ensure that the cover plate 6 fits tightly with the protective box 1 when it is closed, thereby enhancing the sealing effect. At the same time, the limiting structure facilitates the quick installation and removal of the cover plate 6 and makes it convenient to operate the upper structure inside the protective box 1.

[0040] Please see Figure 1 and Figure 5In this embodiment, the filtration detection mechanism includes a first fixed cylinder 19, a plug 20, a fixed plate 21, a detection probe 22, and a filter plate 23. An inclined filter plate 23 is fixedly connected to the inner wall of the fixed box 13. The outlet end of the water inlet pipe 2 is located below the filter plate 23, and the inlet end of the first pipe body 14 is located above the filter plate 23. The first fixed cylinder 19 is fixedly connected through the upper end of the fixed box 13. A plug 20 is placed inside the first fixed cylinder 19. A fixed plate 21 is fixedly connected to the upper part of the side wall of the plug 20. The lower end of the fixed plate 21 is attached to the upper end of the first fixed cylinder 19. A detection probe 22 is fixedly connected to the lower end. The detection probe 22 is electrically connected to the first water quality analyzer 11. The inclined filter plate 23 can perform preliminary filtration of the water flowing in from the inlet pipe 2. Solid matter is intercepted below the filter plate 23, and the water flows out from the first pipe 14 above, so that the detection probe 22 is located in the filtered clean water, avoiding contamination of the detection probe 22 by solid matter in complex water, and ensuring data accuracy. The lower end of the fixing plate 21 is attached to the upper end of the first fixing cylinder 19, which allows for easy and quick removal of the insertion post 20, making it convenient to clean or calibrate the detection probe 22.

[0041] Please see Figure 1 and Figures 9-11 In this embodiment, the liquid receiving mechanism includes a cross block 35 and a plastic box 40; a U-shaped seat 34 is fixedly connected to the lower end of the protective body 15, and a cross block 35 is rotatably installed on the inner walls of both sides of the U-shaped seat 34. A cross groove 38 is opened at the upper end of the cross block 35, and a plurality of insertion holes 39 are opened through the lower end of the cross groove 38. Two fixing blocks 36 are fixedly connected to the lower end of the protective body 15. A first screw hole is opened on one side of the fixing block 36, and a screw 37 is threadedly installed on the inner wall of the first screw hole. A plastic box 40 is placed on the inner wall of the cross groove 38. A cross-shaped groove is opened at the upper end of the plastic box 40, and a plurality of inserts 41 are fixedly connected through the lower end of the plastic box 40. The side wall of the insert 41 fits against the inner wall of the insertion hole 39. A second collection box 42 is threadedly installed on the lower part of the side wall of the insert 41. A second collection box 42 is opened through the side of the cross block 35. The inner wall of the second screw hole is threaded to the side wall of the screw 37. The lower end of the second tube 17 is fixedly connected to the third tube 43. The lower end of the third tube 43 passes through the protective body 15 and extends to the bottom of the protective body 15. The third tube 43 is equipped with a third solenoid valve 44. The lower end of the third tube 43 is located directly above the cross block 35. When the third solenoid valve 44 is opened, the liquid in the second tube 17 flows into the plastic box 40 through the third tube 43, and then flows into the second collection box 42 for collection through the insert 41. The cross block 35 is connected to the fixing block 36 through the screw 37. After removing the screw 37, rotating the cross block 35 can drive the plastic box 40 to rotate, which is convenient for replacing the plastic box 40. After removing the second collection box 42, the water in it can be placed into the first water quality analyzer 11 for water quality analysis.

[0042] Please see Figure 1 andFigure 4 In this embodiment, support legs 16 are fixedly connected to the four corner edges of the lower end of the protective body 15. The lower end of the support legs 16 is fixedly connected to the bottom surface of the inner wall of the protective box 1. The support legs 16 stably support the protective body 15 at the bottom of the protective box 1, so that the protective body 15 and the internal liquid receiving mechanism remain stable.

[0043] Example 2: Please refer to Figure 6 and Figure 7 Based on Embodiment 1, this application provides a technical solution: the secondary filtration mechanism includes a bracket 24, a rotating block 25, a second fixed cylinder 26, and a filter disc 27; the bracket 24 is fixedly connected to the bottom surface of the inner wall of the protective box 1, the rotating block 25 is rotatably installed on the inner walls of both sides of the bracket 24, the second fixed cylinder 26 is fixedly connected to the side wall of the rotating block 25, the filter disc 27 is threadedly installed on the inner wall of the second fixed cylinder 26, one end of the second fixed cylinder 26 is bolted to the flange of the liquid outlet port of the second pipe body 17, and the other end of the second fixed cylinder 26 is bolted to the liquid inlet of the water outlet pipe 3. On the flange at the end, the filter disc 27 inside the second fixed cylinder 26 can perform secondary fine filtration on the water after preliminary filtration. In conjunction with the first water quality analyzer 11 and the second water quality analyzer 12, it is possible to compare and test the water quality after preliminary purification and secondary filtration. The filter disc 27 is threadedly installed inside the second fixed cylinder 26, which makes it easy to replace the filter disc 27 with different precision according to the testing requirements, thereby improving the testing flexibility. The rotating block 25 can drive the second fixed cylinder 26 to rotate. When disassembling, it is not necessary to completely remove the pipe. It can be separated simply by rotating, which facilitates the replacement and maintenance of the filter disc 27.

[0044] Working principle: When in use, connect the sewage pipe to the inlet port of the inlet pipe 2 and open the electric valve on the inlet pipe 2. The sewage enters the fixed box 13 through the right end of the inlet pipe 2. The filter plate 23, which is inclined inside the fixed box 13, performs preliminary filtration of the sewage. Solid matter is intercepted below the filter plate 23, while liquid flows from the first pipe 14 above the filter plate 23 into the second pipe 17.

[0045] If it is necessary to sample and test the liquid in the second tube 17, open the third solenoid valve 44 on the third tube 43. The liquid flows through the lower end of the third tube 43 into the plastic box 40 located in the cross groove 38 at the upper end of the cross block 35, and then falls through the insert 41 at the lower end of the plastic box 40 into the second collection box 42 threaded on the lower side wall of the insert 41 for collection. After collection, the second collection box 42 can be manually removed to test the water quality stored in it.

[0046] In addition, removing the screw 37 and rotating the cross block 35 can rotate the plastic box 40, making it easy to replace different plastic boxes 40;

[0047] Next, the liquid flows from the second tube 17 into the secondary filtration mechanism. In the secondary filtration mechanism, the second fixed cylinder 26 is mounted on the bracket 24 via the rotating block 25. The filter disc 27 threaded on the inner wall of the second fixed cylinder 26 performs secondary filtration on the liquid. The filtered liquid flows into the outlet pipe 3.

[0048] At this time, manually lift the baffle 33 on the inner wall of the third fixed cylinder 28 upwards. The liquid will flow into the third fixed cylinder 28 through the through hole 29 on the side wall of the third fixed cylinder 28. Then open the second solenoid valve 31 on the liquid outlet pipe 30 so that the liquid after secondary filtration flows into the first collection box 32 threaded on the lower part of its side wall through the liquid outlet pipe 30. After removing the first collection box 32, the liquid at this time can be detected by the first water quality analyzer 11.

[0049] The detection probe 22 at the lower end of the insertion post 20 inside the fixed box 13 is located in the water above the filter plate 23 and is electrically connected to the first water quality analyzer 11. It can detect the water quality after preliminary purification above the filter plate 23 in real time. The second water quality analyzer 12 can detect the water quality after passing through the secondary filtration mechanism. By comparing the three, the detection and analysis of water quality at different purification stages can be realized.

[0050] The protective box 1 forms a sealed box structure through the first sliding door 5, the second sliding door 9, and the cover plate 6, effectively isolating external impurities and protecting internal components. The handles 10 at both ends of the protective box 1 facilitate equipment handling. The limiting plate at the lower end of the cover plate 6 fits against the inner wall of the second groove 7 at the upper end of the protective box 1, ensuring that the cover plate 6 is tightly closed and easy to install and disassemble. The support legs 16 at the lower end of the protective body 15 firmly support it at the bottom of the protective box 1, ensuring the stability of the liquid receiving mechanism. The filter plate 27 can be disassembled and replaced with different precision as needed, improving the flexibility of detection. The insertion post 20 cooperates with the first fixed cylinder 19 through the fixed plate 21, making it easy to remove the detection probe 22 for maintenance and cleaning, ensuring data accuracy.

Claims

1. A water quality analysis instrument for water conservancy and drainage, including a protective case (1); characterized in that: The left end of the protective box (1) is fixedly connected to the inlet pipe (2) and the outlet pipe (3). The top of the protective box (1) is covered with a cover plate (6). The bottom of the inner wall of the protective box (1) is fixedly connected to a fixed box (13). The right end of the inlet pipe (2) passes through the protective box (1) and extends into the fixed box (13). The fixed box (13) is equipped with a filter detection mechanism. The right end of the fixed box (13) is fixedly connected to the first pipe body (14). The right end of the first pipe body (14) is fixedly connected to the second pipe body (17). The side wall of the second pipe body (17) is fixedly connected to a protective body (15). The lower end of the protective body (15) is equipped with a liquid receiving mechanism. The outlet end of the second pipe body (17) is connected to a secondary filtration mechanism. The outlet end of the secondary filtration mechanism is connected to the inlet end of the outlet pipe (3). The upper end of the water outlet pipe (3) is fixedly connected to a third fixed cylinder (28), the lower end of the third fixed cylinder (28) is fixedly connected to a liquid outlet pipe (30), a second solenoid valve (31) is installed on the liquid outlet pipe (30), a first collection box (32) is threaded on the lower part of the side wall of the liquid outlet pipe (30), a baffle (33) is placed on the inner wall of the third fixed cylinder (28), a through hole (29) is opened through the side wall of the third fixed cylinder (28), and there is a gap between the side wall of the third fixed cylinder (28) and the inner wall of the water outlet pipe (3); The bottom of the inner wall of the protective box (1) contains a first water quality analyzer (11) and a second water quality analyzer (12), and the first water quality analyzer (11) is electrically connected to the filter detection mechanism.

2. The water quality analysis instrument for water conservancy and drainage according to claim 1, characterized in that: A first groove (4) is provided through one side of the protective box (1). A first sliding door (5) is hinged to one side of the inner wall of the first groove (4). The first sliding door (5) and the first groove (4) are compatible. A third groove (8) is provided through the other side of the protective box (1). A second sliding door (9) is hinged to one side of the inner wall of the third groove (8). The second sliding door (9) and the third groove (8) are compatible. When the first sliding door (5) is located in the first groove (4) and the second sliding door (9) is located in the third groove (8), the protective box (1), the first sliding door (5), the cover plate (6) and the second sliding door (9) together constitute a sealed box structure.

3. The water quality analysis instrument for water conservancy and drainage according to claim 1, characterized in that: An electric valve is installed on the water inlet pipe (2), and handles (10) are fixed to both the left and right ends of the protective box (1). A first solenoid valve (18) is installed on the second pipe body (17).

4. The water quality analysis instrument for water conservancy and drainage according to claim 1, characterized in that: A limiting plate is fixed to the lower end of the cover plate (6), and a second groove (7) is opened through the upper end of the protective box (1). The inner wall of the second groove (7) is in contact with the side wall of the limiting plate.

5. The water quality analysis instrument for water conservancy and drainage according to claim 1, characterized in that: The filtration and testing mechanism includes a first fixed cylinder (19), a plug (20), a fixed plate (21), a detection probe (22), and a filter plate (23). The inner wall of the fixed box (13) is fixed with an inclined filter plate (23). The outlet end of the water inlet pipe (2) is located below the filter plate (23), and the inlet end of the first pipe body (14) is located above the filter plate (23). The upper end of the fixed box (13) is fixed with the first fixed cylinder (19) through it. The plug (20) is placed inside the first fixed cylinder (19). The upper part of the side wall of the plug (20) is fixed with a fixed plate (21). The lower end of the fixed plate (21) is attached to the upper end of the first fixed cylinder (19). The lower end of the plug (20) is fixed with a detection probe (22). The detection probe (22) is electrically connected to the first water quality analyzer (11).

6. The water quality analysis instrument for water conservancy and drainage according to claim 1, characterized in that: The liquid receiving mechanism includes a cross block (35) and a plastic box (40); a U-shaped seat (34) is fixedly connected to the lower end of the protective body (15), and a cross block (35) is rotatably installed on the inner walls of both sides of the U-shaped seat (34). A cross groove (38) is opened at the upper end of the cross block (35), and multiple insertion holes (39) are opened through the lower end of the cross groove (38). Two fixing blocks (36) are fixedly connected to the lower end of the protective body (15). A first screw hole is opened on one side of the fixing block (36), and a screw rod (37) is threaded on the inner wall of the first screw hole. A plastic box (40) is placed on the inner wall of the cross groove (38), and a cross-shaped groove is opened at the upper end of the plastic box (40). Multiple inserts (41) are fixedly connected to the lower end of the box (40). The side wall of the insert (41) fits against the inner wall of the insertion hole (39). A second collection box (42) is threaded on the lower part of the side wall of the insert (41). A second screw hole is opened through one side of the cross block (35). The inner wall of the second screw hole is threaded to the side wall of the screw rod (37). A third tube (43) is fixedly connected to the lower end of the second tube (17). The lower end of the third tube (43) passes through the protective body (15) and extends to the bottom of the protective body (15). A third solenoid valve (44) is provided on the third tube (43). The lower end of the third tube (43) is located directly above the cross block (35).

7. The water quality analysis instrument for water conservancy and drainage according to claim 1, characterized in that: The lower corners of the protective body (15) are all fixed with legs (16), and the lower ends of the legs (16) are fixed to the bottom of the inner wall of the protective box (1).

8. The water quality analysis instrument for water conservancy and drainage according to claim 1, characterized in that: The secondary filtration mechanism includes a bracket (24), a rotating block (25), a second fixed cylinder (26), and a filter disc (27). The bracket (24) is fixedly connected to the bottom of the inner wall of the protective box (1). The rotating block (25) is rotatably installed on the inner walls of both sides of the bracket (24). The second fixed cylinder (26) is fixedly connected to the side wall of the rotating block (25). The filter disc (27) is threadedly installed on the inner wall of the second fixed cylinder (26). One end of the second fixed cylinder (26) is bolted to the flange of the liquid outlet port of the second pipe body (17). The other end of the second fixed cylinder (26) is bolted to the flange of the liquid inlet end of the water outlet pipe (3).

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