River regulation monitoring device for hydraulic engineering

Abstract

The invention discloses a river regulation monitoring device for a water conservancy project, and relates to the technical field of water quality monitoring, the river regulation monitoring device comprises a plurality of contact pins, and further comprises a cutoff sample reserving mechanism, the cutoff sample reserving mechanism is mounted at the tops of the plurality of contact pins, the cutoff sample reserving mechanism comprises a sample reserving box, and water flow ports are formed in the two sides of the sample reserving box; the cutoff sample reserving mechanism further comprises a handle fixed to the top of the sample reserving box, a plurality of plate openings are formed in the two sides of the sample reserving box, first sealing plates are arranged in the plate openings in a sleeved mode, and a movable frame is fixed to the tops of the two first sealing plates located on the same side. The vertical water flow of a certain part of a river channel is integrally cut off for sample reserving, substances of different layers of the water flow are fully obtained, more comprehensive river channel water quality data are obtained and mixed, meanwhile, water quality data of different position heights in the mixing process are obtained, the data are more accurate, contact between a detection head and water is reduced in the monitoring process, and the detection accuracy is improved. And the influence of water on the device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of water quality monitoring, and in particular to a river channel regulation monitoring device used in water conservancy projects. Background Art

[0002] River management refers to the activities that promote the recovery of river water ecosystems through artificial restoration measures within the river land control line, on the basis of meeting the basic functions of the river such as flood control, drainage and water diversion, so as to build a healthy, complete and stable river water ecosystem.

[0003] In the process of river management, it is necessary to continuously monitor the water quality and obtain the water quality in the river. However, most of the current methods are to extract water from different heights for testing. However, the extracted water at a fixed point can only represent the water quality data at that point, and cannot represent the water quality of the river more comprehensively, so the test data is prone to errors. Summary of the invention

[0004] The present invention provides a river channel regulation monitoring device for water conservancy projects to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A river channel regulation monitoring device for water conservancy projects, comprising a plurality of pins, and further comprising:

[0007] A flow-cutting and sample-retaining mechanism, wherein the flow-cutting and sample-retaining mechanism is installed on the top of a plurality of pins, and the flow-cutting and sample-retaining mechanism comprises a sample-retaining box, and water flow ports are opened on both sides of the sample-retaining box;

[0008] The flow-cutting sample retention mechanism also includes a handle fixed on the top of the sample retention box, a plurality of plate openings are opened on both sides of the sample retention box, a sealing plate 1 is sleeved inside the plate opening, a movable frame is fixed on the top of two sealing plates 1 located on the same side, the two movable frames are symmetrically installed, a guide rod 1 is sleeved inside the two movable frames, the guide rod 1 is fixed on the top of the sample retention box, a double-section reciprocating threaded rod is rotatably connected to the top of the sample retention box, the double-section reciprocating threaded rod is threadedly sleeved inside the two movable frames, a bevel gear 1 is fixed on one end of the double-section reciprocating threaded rod, and a transmission structure is installed on one side of the sample retention box;

[0009] The transmission structure includes a mounting plate fixed to one side of the sample retention box, the top of the mounting plate is rotatably connected to a rotating shaft, the top of the rotating shaft is installed with a one-way gear 1, the outside of the rotating shaft is fixed with a bevel gear 2, and the bevel gear 2 is meshed with the bevel gear 1;

[0010] The flow-cutting and sampling retention mechanism cuts off the water flow in the vertical layers of the river channel, so that the vertical multi-layered water and materials in different floating layers in the river channel are completely retained inside, making the water quality detection data of the river channel more comprehensive.

[0011] Furthermore, a multi-level waterproof detection mechanism is installed on one side of the sample retention box, and the multi-level waterproof detection mechanism includes a triangular block 2 and two symmetrically arranged triangular blocks 1, and a detection probe is fixed inside one side of the triangular block 2;

[0012] The multi-level waterproof detection mechanism also includes a mounting frame 1 and a mounting frame 2 fixed on one side of the sample retention box, the top of the mounting frame 2 is rotatably connected with a reciprocating screw, the reciprocating screw penetrates and is rotatably connected to the inside of the mounting frame 1, a one-way gear 2 is installed on the top of the reciprocating screw, a guide rod 2 is fixed between the mounting frame 2 and the mounting frame 1, the external thread sleeve of the reciprocating screw is provided with a movable plate, the movable plate sleeve is arranged on the outside of the guide rod 2, a sealing box is fixed on one side of the sample retention box, the reciprocating screw penetrates and is rotatably connected to the inside of the sealing box, the guide rod 2 penetrates and is fixed to the inside of the sealing box, a power supply and a remote controller are fixed to the inside of the sealing box, and the detection probe is electrically connected to the power supply and the remote controller respectively;

[0013] The multi-level waterproof detection mechanism also includes a limit opening that runs through the inside of the movable plate, a limit square rod is sleeved inside the limit opening, a spring 1 is fixed on the side of the movable plate close to the sample retention box, the triangular block 2 is fixed on one end of the limit square rod, the spring is set on the outside of the limit square rod, and the end of the spring 1 away from the movable plate is fixedly connected to the triangular block 2;

[0014] The multi-level waterproof detection mechanism also includes a plurality of detection ports opened on one side of the sample retention box, the top and bottom of the inner wall of the detection port are fixed with springs 2, the two triangular blocks 1 are installed between the two springs 2, each triangular block 1 is fixedly connected to the adjacent spring 2, the inclined surfaces of the two triangular blocks 1 are opposite, a sealing plate 2 is fixed on one side of the triangular block 1, and both sides of the sealing plate 2 are sleeved with limit frames, the limit frames are fixedly connected to the inner wall of the sample retention box, a right-angle groove with the same length as the triangular block 2 is opened on one side of the sample retention box, and the size of the right-angle groove is larger than the right-angle size formed by the combination of the inclined surfaces of the two triangular blocks 1;

[0015] The multi-level waterproof detection mechanism acquires data at multiple heights after the water is cut off. The integration of data at multiple locations can obtain more appropriate detection data, making the detection data more accurate.

[0016] Further, a mixing mechanism, wherein the mixing mechanism is connected to the sample retention box;

[0017] The mixing mechanism comprises a stirring rod rotatably connected to the inner wall of the bottom of the sample retaining box, the stirring rod penetrates and rotatably connected to the top of the sample retaining box, a pulley 1 is fixed to the top of the stirring rod, a pulley 2 is fixed to the top of the reciprocating screw, and the external transmission of the pulley 1 and the pulley 2 is connected by a belt;

[0018] The mixing mechanism mixes the water intercepted inside, so that the floating materials in the multi-layer water are mixed together for detection, so that more comprehensive water quality data can be obtained.

[0019] Further, a driving mechanism, the driving mechanism is installed between the multi-level waterproof detection mechanism and the flow-cutting and sample-retaining mechanism;

[0020] The driving mechanism includes a motor plate fixed on one side of the sample retention box, a motor is fixed on the top of the motor plate, a gear is fixed on one end of the output shaft of the motor, the gears are respectively meshed with one-way gear one and one-way gear two, and the motor is electrically connected to a power supply and a remote controller respectively.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention cuts off the vertical water flow of the river channel by installing a flow-cutting and sample-retaining mechanism, so that the vertical multi-layer water and materials in different floating layers in the river channel are completely retained inside, making the water quality detection data of the river channel more comprehensive;

[0023] 2. The present invention installs a multi-level waterproof detection mechanism to obtain multi-height data of the cut-off water. The data integration of multiple positions can obtain more appropriate detection data, making the detection data more accurate;

[0024] 3. The present invention mixes the water intercepted inside by installing a mixing mechanism, so that the floating substances in the multi-layer water are mixed together for detection, and more comprehensive water quality data can be obtained.

[0025] In summary, the device cuts off the vertical water flow of a certain part of the river and retains samples, fully obtains substances at different levels of the water flow, obtains more comprehensive river water quality data, and mixes them. At the same time, it obtains water quality data at different positions and heights during the mixing process. The data is more accurate, and the contact between the detection head and water is reduced during the monitoring process, reducing the impact of water on it. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall first-perspective structure of a river channel management monitoring device for water conservancy projects proposed by the present invention.

[0027] Figure 2This is a schematic diagram of the overall second-view structure of a river channel management monitoring device for water conservancy projects proposed by the present invention.

[0028] Figure 3 This is a schematic diagram of the overall third-perspective structure of a river channel management and monitoring device for water conservancy projects proposed by the present invention.

[0029] Figure 4 This is a schematic diagram of the overall fourth-perspective structure of a river channel management and monitoring device for water conservancy projects proposed by the present invention.

[0030] Figure 5 This is a schematic diagram of the overall fifth perspective structure of a river management monitoring device for water conservancy projects proposed by the present invention.

[0031] Figure 6 This is a partial structural schematic diagram of a multi-level waterproof detection mechanism of a river management monitoring device for water conservancy projects proposed by the present invention.

[0032] Figure 7 for Figure 3 Enlarged structural diagram at point A.

[0033] In the figure: 1. Insert pin; 2. Cut-off sample retention mechanism; 21. Sample retention box; 22. Water flow outlet; 23. Handle; 24. Guide rod 1; 25. Reciprocating screw rod; 26. Bevel gear 1; 27. Mounting plate; 28. Rotating shaft; 29. ​​One-way gear 1; 210. Bevel gear 2; 211. Moving frame; 212. Sealing plate 1; 3. Multi-level waterproof detection mechanism; 31. Sealing box; 32. Reciprocating screw rod; 33. One-way gear 2; 34. Guide rod 2; 35. Moving plate; 36. Limiting square rod; 37. Triangle block 2; 38. Spring 1; 39. Detection probe; 310. Detection port; 311. Right-angle groove; 312. Spring 2; 313. Triangle block 1; 314. Sealing plate 2; 315. Limiting frame; 316. Mounting frame 2; 317. Mounting frame 1; 4. Mixing mechanism; 41. Stirring rod; 42. Pulley 1; 43. Pulley 2; 44. Belt; 5. Driving mechanism; 51. Motor plate; 52. Motor; 53. Gear. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] Example: Refer to Figure 1-Figure 7 : A river management monitoring device for water conservancy projects, comprising a plurality of pins 1, and also comprising:

[0038] A flow-cutting and sample-retaining mechanism 2, which is installed on the top of the plurality of pins 1, and comprises a sample-retaining box 21, and water flow ports 22 are provided on both sides of the sample-retaining box 21;

[0039] The flow-cutting sample retention mechanism 2 also includes a handle 23 fixed on the top of the sample retention box 21, and multiple plate openings are opened on both sides of the sample retention box 21. A sealing plate 212 is sleeved inside the plate opening, and a mobile frame 211 is fixed on the top of two sealing plates 212 located on the same side. The two mobile frames 211 are symmetrically installed, and the insides of the two mobile frames 211 are sleeved with a guide rod 24, which is fixed to the top of the sample retention box 21. The top of the sample retention box 21 is rotatably connected with a double-section reciprocating threaded rod 25, and the double-section reciprocating threaded rod 25 is threadedly sleeved inside the two mobile frames 211. A bevel gear 26 is fixed to one end of the double-section reciprocating threaded rod 25, and a transmission structure is installed on one side of the sample retention box 21;

[0040] The transmission structure includes a mounting plate 27 fixed to one side of the sample retention box 21, the top of the mounting plate 27 is rotatably connected to a rotating shaft 28, a one-way gear 1 29 is installed on the top of the rotating shaft 28, a bevel gear 210 is fixed to the outside of the rotating shaft 28, and the bevel gear 210 is meshed with the bevel gear 1 26;

[0041] The flow-cutting and sampling retention mechanism cuts off the water flow in the vertical layers of the river channel, so that the vertical multi-layered water and materials in different floating layers in the river channel are completely retained inside, making the water quality detection data of the river channel more comprehensive.

[0042] The multi-level waterproof detection mechanism 3 is installed on one side of the sample box 21. The multi-level waterproof detection mechanism 3 includes a triangular block 2 37 and two symmetrically arranged triangular blocks 1 313. A detection probe 39 is fixed inside one side of the triangular block 2 37.

[0043] The multi-level waterproof detection mechanism 3 also includes a mounting frame 1 317 and a mounting frame 2 316 fixed on one side of the sample retention box 21, a reciprocating screw 32 is rotatably connected to the top of the mounting frame 216, the reciprocating screw 32 penetrates and is rotatably connected to the inside of the mounting frame 1 317, a one-way gear 2 33 is installed on the top of the reciprocating screw 32, a guide rod 2 34 is fixed between the mounting frame 2 316 and the mounting frame 1 317, the external thread sleeve of the reciprocating screw 32 is provided with a moving plate 35, the moving plate 35 is sleeved on the outside of the guide rod 2 34, a sealing box 31 is fixed to one side of the sample retention box 21, the reciprocating screw 32 penetrates and is rotatably connected to the inside of the sealing box 31, the guide rod 2 34 penetrates and is fixed to the inside of the sealing box 31, a power supply and a remote controller are fixed to the inside of the sealing box 31, and a detection probe 39 is electrically connected to the power supply and the remote controller respectively;

[0044] The multi-level waterproof detection mechanism 3 also includes a limit opening that runs through the inside of the movable plate 35, and a limit square rod 36 is sleeved inside the limit opening. A spring 1 38 is fixed on the side of the movable plate 35 close to the sample retention box 21, and a triangular block 2 37 is fixed on one end of the limit square rod 36. The spring 1 38 is sleeved on the outside of the limit square rod 36, and the end of the spring 1 38 away from the movable plate 35 is fixedly connected to the triangular block 2 37;

[0045] The multi-level waterproof detection mechanism 3 also includes a plurality of detection ports 310 opened on one side of the sample retention box 21, and the top and bottom of the inner wall of the detection port 310 are fixed with springs 2 312, and two triangular blocks 1 313 are installed between the two springs 2 312, and each triangular block 1 313 is fixedly connected to the adjacent spring 2 312, and the inclined surfaces of the two triangular blocks 1 313 are opposite, and a sealing plate 2 314 is fixed to one side of the triangular block 1 313, and both sides of the sealing plate 2 314 are sleeved with limit frames 315, and the limit frames 315 are fixedly connected to the inner wall of the sample retention box 21, and a right-angle groove 311 with the same length as the triangular block 2 37 is opened on one side of the sample retention box 21, and the size of the right-angle groove 311 is larger than the right-angle size formed by the inclined surfaces of the two triangular blocks 1 313;

[0046] The multi-level waterproof detection mechanism acquires data at multiple heights after the water is cut off. The integration of data at multiple locations can obtain more appropriate detection data, making the detection data more accurate.

[0047] A mixing mechanism 4, the mixing mechanism 4 is connected to the sample retention box 21;

[0048] The mixing mechanism 4 includes a stirring rod 41 rotatably connected to the inner wall of the bottom of the sample retaining box 21, the stirring rod 41 penetrates and is rotatably connected to the top of the sample retaining box 21, a pulley 1 42 is fixed to the top of the stirring rod 41, a pulley 2 43 is fixed to the top of the reciprocating screw 32, and a belt 44 is connected to the external transmission of the pulley 1 42 and the pulley 2 43;

[0049] The mixing mechanism mixes the water intercepted inside, so that the floating materials in the multi-layer water are mixed together for detection, so that more comprehensive water quality data can be obtained.

[0050] The driving mechanism 5 is installed between the multi-level waterproof detection mechanism 3 and the flow-cutting and sample-retaining mechanism 2 .

[0051] The driving mechanism 5 includes a motor plate 51 fixed on one side of the sample box 21, a motor 52 is fixed on the top of the motor plate 51, a gear 53 is fixed on one end of the output shaft of the motor 52, the gear 53 is respectively meshed with the one-way gear 1 29 and the one-way gear 2 33, and the motor 52 is respectively electrically connected to the power supply and the remote controller.

[0052] Working principle:

[0053] First, the device is inserted into the mud of the river channel and installed underwater. Water flows through the two water flow ports 22 and passes through the interior of the sample retention box 21. When detection is required, the motor 52 is started by remote control of the remote controller to drive the gear 53 to rotate forward. The forward rotation of the gear 53 satisfies the direction of the rotation of the one-way gear 29 to drive the rotating shaft 28, so the rotating shaft 28 drives the bevel gear 210 to rotate. The rotation of the bevel gear 210 drives the bevel gear 1 26 and the double-section reciprocating threaded rod 25 to rotate. The rotation of the double-section reciprocating threaded rod 25 causes the two moving frames 211 to drive the sealing plate 1 212 to move. The four sealing plates 1 212 close the water flow port 22, leaving the passing water flow inside the sample retention box 21. At this time, the cut-off water flow contains materials at different vertical levels of the river channel, and the materials at different floating layers are completely retained inside, making the detection data more comprehensive.

[0054] Then the motor 52 is started to drive the gear 53 to reverse, and the reverse rotation of the gear 53 satisfies the direction of the one-way gear 2 33 driving the reciprocating screw 32 to rotate, and the reciprocating screw 32 rotates to drive the moving plate 35 to move downward, and the moving plate 35 moves downward to drive the limiting square rod 36, the spring 1 38, the triangular block 2 37 and the detection probe 39 to move downward, and one side of the triangular block 2 37 contacts the outer wall of the sample box 21, and the spring 1 38 is compressed, and at the same time, the reciprocating screw 32 drives the pulley 2 43 to rotate, and the pulley 2 43 is driven by the belt 44 drives pulley 1 42 to rotate, pulley 1 42 drives stirring rod 41 to rotate, stirring rod 41 rotates to fully mix the water inside, triangle block 2 37 moves to the front of right angle slot 311, motor 52 stops, spring 1 38 inserts the triangle block into the right angle slot 311, and when inserting, because the right angle size of triangle block 2 37 is larger than the right angle size of the combination of two triangle blocks 1 313, triangle block 2 37 will spread the two triangle blocks 1 313 apart, so that the two triangle blocks are separated. Phase 1 313 moves away from the compression spring 2 312 and drives the sealing plate 2 314 away, opening the gap of the detection probe 39. After the detection probe 39 is inserted, it contacts the mixed water at this layer, obtains the data of this layer, and then transmits it to the remote controller. After the position data is detected, the motor 52 is started to drive the gear 53 to reverse, and the gear 53 reverses to continue to move the moving plate 35 downward. The moving plate 35 continues to drive the triangular block 2 37 downward. When the triangular block 2 37 moves downward, it is limited by the right-angle groove 311. Then the downward force makes the triangular block 2 37 go downhill along the right-angle groove 311 to compress the spring 1 38, so that the triangular block 2 37 moves out of the right-angle groove 311, and continues to detect the water quality at the next height. After moving to the bottom, the moving plate 35 rises and resets along the reciprocating screw 32, and then the remote controller transmits the data of multiple heights to the terminal for average calculation to obtain the final detection data. During the detection process, the detection probe 39, the power supply and the remote controller are protected to avoid water seepage and water damage.

[0055] After the detection, it enters a dormant state, and then starts the detection mode at a fixed time to continuously monitor the water quality of the river.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A river management monitoring device for water conservancy projects, comprising a plurality of pins (1), characterized in that: Also includes: A flow-stopping and sample-retaining mechanism (2), the flow-stopping and sample-retaining mechanism (2) being installed on the top of the plurality of insertion pins (1), the flow-stopping and sample-retaining mechanism (2) comprising a sample-retaining box (21), and water flow openings (22) being provided on both sides of the sample-retaining box (21); A multi-layer waterproof detection mechanism (3), the multi-layer waterproof detection mechanism (3) being installed on one side of the sample retention box (21), the multi-layer waterproof detection mechanism (3) comprising a second triangular block (37) and two symmetrically arranged first triangular blocks (313), a detection probe (39) being fixed inside one side of the second triangular block (37); A mixing mechanism (4), wherein the mixing mechanism (4) is connected to a sample retaining box (21); A driving mechanism (5) is installed between the multi-layer waterproof detection mechanism (3) and the flow-cutting and sample-retaining mechanism (2).

2. A river management monitoring device for water conservancy projects according to claim 1, characterized in that: The flow-cutting sample retention mechanism (2) further comprises a handle (23) fixed on the top of the sample retention box (21); a plurality of plate openings are provided on both sides of the sample retention box (21); a sealing plate (212) is sleeved inside the plate opening; a movable frame (211) is fixed on the top of two sealing plates (212) located on the same side; the two movable frames (211) are symmetrically installed; a guide rod (24) is sleeved inside the two movable frames (211); the guide rod (24) is fixed on the top of the sample retention box (21); a double-section reciprocating threaded rod (25) is rotatably connected to the top of the sample retention box (21); the double-section reciprocating threaded rod (25) is threadedly sleeved inside the two movable frames (211); a bevel gear (26) is fixed to one end of the double-section reciprocating threaded rod (25); and a transmission structure is installed on one side of the sample retention box (21).

3. A river management monitoring device for water conservancy projects according to claim 2, characterized in that: The transmission structure comprises a mounting plate (27) fixed on one side of the sample retention box (21); the top of the mounting plate (27) is rotatably connected to a rotating shaft (28); the top of the rotating shaft (28) is provided with a one-way gear 1 (29); the outside of the rotating shaft (28) is fixed with a bevel gear 2 (210); the bevel gear 2 (210) is meshed with the bevel gear 1 (26).

4. A river management monitoring device for water conservancy projects according to claim 3, characterized in that: The multi-level waterproof detection mechanism (3) also includes a mounting frame 1 (317) and a mounting frame 2 (316) fixed on one side of the sample retention box (21); the top of the mounting frame 2 (316) is rotatably connected to a reciprocating screw (32); the reciprocating screw (32) penetrates and is rotatably connected to the inside of the mounting frame 1 (317); a one-way gear 2 (33) is installed on the top of the reciprocating screw (32); a guide rod 2 (34) is fixed between the mounting frame 2 (316) and the mounting frame 1 (317); the reciprocating screw (32) is rotatably connected to the inside of the mounting frame 1 (317); a one-way gear 2 (33) is installed on the top of the reciprocating screw (32); a guide rod 2 (34) is fixed between the mounting frame 2 (316) and the mounting frame 1 (317); The external thread sleeve of the screw rod (32) is provided with a movable plate (35), and the movable plate (35) is sleeved on the outside of the second guide rod (34). A sealing box (31) is fixed on one side of the sample retention box (21). The reciprocating screw rod (32) passes through and is rotatably connected to the inside of the sealing box (31). The second guide rod (34) passes through and is fixed to the inside of the sealing box (31). A power supply and a remote controller are fixed inside the sealing box (31), and the detection probe (39) is electrically connected to the power supply and the remote controller respectively.

5. A river management monitoring device for water conservancy projects according to claim 4, characterized in that: The multi-level waterproof detection mechanism (3) also includes a limiting opening extending through the interior of the movable plate (35), a limiting square rod (36) being sleeved inside the limiting opening, a spring (38) being fixed on a side of the movable plate (35) close to the sample retention box (21), the triangular block (37) being fixed on one end of the limiting square rod (36), the spring (38) being sleeved on the outside of the limiting square rod (36), and the end of the spring (38) away from the movable plate (35) being fixedly connected to the triangular block (37).

6. A river management monitoring device for water conservancy projects according to claim 5, characterized in that: The multi-level waterproof detection mechanism (3) also includes a plurality of detection ports (310) opened on one side of the sample retention box (21), the top and bottom of the inner wall of the detection port (310) are both fixed with springs 2 (312), two triangular blocks 1 (313) are installed between the two springs 2 (312), each triangular block 1 (313) is fixedly connected to the adjacent spring 2 (312), the inclined surfaces of the two triangular blocks 1 (313) are opposite, a sealing plate 2 (314) is fixed on one side of the triangular block 1 (313), and limiting frames (315) are sleeved on both sides of the sealing plate 2 (314), and the limiting frames (315) are fixedly connected to the inner wall of the sample retention box (21), and a right-angle groove (311) with the same length as the triangular block 2 (37) is opened on one side of the sample retention box (21), and the size of the right-angle groove (311) is larger than the right-angle size formed by the inclined surfaces of the two triangular blocks 1 (313).

7. A river management monitoring device for water conservancy projects according to claim 6, characterized in that: The mixing mechanism (4) comprises a stirring rod (41) rotatably connected to the inner wall of the bottom of the sample retaining box (21), the stirring rod (41) penetrates and is rotatably connected to the top of the sample retaining box (21), a pulley 1 (42) is fixed to the top end of the stirring rod (41), a pulley 2 (43) is fixed to the top end of the reciprocating screw (32), and a belt (44) is connected to the external transmission of the pulley 1 (42) and the pulley 2 (43).

8. A river management monitoring device for water conservancy projects according to claim 7, characterized in that: The driving mechanism (5) comprises a motor plate (51) fixed to one side of the sample retention box (21), a motor (52) being fixed to the top of the motor plate (51), a gear (53) being fixed to one end of the output shaft of the motor (52), the gear (53) being respectively meshed with a one-way gear 1 (29) and a one-way gear 2 (33), and the motor (52) being respectively electrically connected to a power source and a remote controller.

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