River water quality monitoring device

Abstract

The application relates to the technical field of water quality monitoring, and discloses a river water quality monitoring device, which comprises a water quality detector and a chassis. One side of the water quality detector is fixedly provided with a probe connecting line, one end of the probe connecting line away from the water quality detector is fixedly provided with a water quality detection probe, the bottom of the chassis is fixedly connected with a floating ball, the upper surface of the chassis is fixedly connected with a mounting bracket, the inner wall of the mounting bracket is fixedly connected with a first cover plate, one side of the mounting bracket is fixedly connected with a second cover plate, the inside of the mounting bracket is provided with a lifting and poking mechanism, and one side of the mounting bracket is fixedly connected with a clamping mechanism. The river water quality monitoring device can drive the one-way driving mechanism through the power mechanism, and then drive the lifting and poking mechanism to poke the probe connecting line, so that the water depth of the water quality detection probe is controlled, and the water quality at the specified depth is conveniently detected.

Description

Technical Field

[0001] This invention relates to the field of water quality monitoring technology, specifically to a river water quality monitoring device. Background Technology

[0002] Water quality monitoring is the process of monitoring and measuring the types of pollutants in water bodies, the concentrations of various pollutants, and their changing trends to evaluate water quality. The monitoring scope is very broad, including unpolluted and polluted natural waters as well as various industrial wastewaters. The main monitoring items can be divided into two categories: one is comprehensive indicators reflecting water quality, such as temperature, color, turbidity, pH value, conductivity, suspended solids, dissolved oxygen, chemical oxygen demand, and biochemical oxygen demand; the other is some toxic substances, such as phenols, cyanides, arsenic, lead, chromium, cadmium, mercury, and organic pesticides. In order to objectively evaluate the water quality of rivers and oceans, in addition to the above monitoring items, it is sometimes necessary to measure flow velocity and flow rate.

[0003] When monitoring the water quality of natural water, it is necessary to frequently sample and monitor the water quality using a water quality analyzer. Generally, handheld water quality analyzers are used by immersing the probe in water to analyze the water quality. However, it is difficult to control the depth of the probe when it is immersed in water, and it is not possible to test the water quality at a specified depth. Therefore, a river water quality monitoring device is needed to control the depth of the water quality detection probe and facilitate the testing of the water quality at a specified depth. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a river water quality monitoring device that solves the problems mentioned in the background.

[0005] This invention provides the following technical solution: a river water quality monitoring device, comprising: a water quality analyzer and a chassis, wherein a probe connection line is fixedly installed on one side of the water quality analyzer, and a water quality detection probe is fixedly installed at the end of the probe connection line away from the water quality analyzer; a float is fixedly connected to the bottom of the chassis; a mounting frame is fixedly connected to the upper surface of the chassis; a first cover plate is fixedly connected to the inner wall of the mounting frame; a second cover plate is fixedly connected to one side of the mounting frame; a lifting and actuating mechanism is provided inside the mounting frame; a locking mechanism is fixedly connected to one side of the mounting frame; a one-way drive mechanism is provided inside the locking mechanism; a power mechanism is provided on one side of the one-way drive mechanism; a depth counting mechanism is provided on the side of the mounting frame away from the second cover plate; and a winding mechanism is provided on one side of the depth counting mechanism.

[0006] Preferably, the lifting and actuating mechanism includes a main shaft, a secondary shaft, a main actuating wheel, a secondary actuating wheel, and a limiting groove. The main shaft and the secondary shaft are rotatably connected to the inner wall of the mounting frame via bearings. The main actuating wheel is fixedly sleeved on the outer wall of the main shaft, and the secondary actuating wheel is fixedly sleeved on the outer wall of the secondary shaft. The limiting grooves are respectively located in the middle of the main actuating wheel and the middle of the secondary actuating wheel. Both the main actuating wheel and the secondary actuating wheel are made of rubber. The probe connection line is located inside the limiting groove.

[0007] Preferably, the positioning mechanism includes a first unidirectional internal toothed ring and a second unidirectional internal toothed ring. Both the first unidirectional internal toothed ring and the second unidirectional internal toothed ring are fixedly connected to one side of the mounting frame. The interior of the first unidirectional internal toothed ring and the interior of the second unidirectional internal toothed ring are respectively provided with a first fixed unidirectional meshing tooth and a second fixed unidirectional meshing tooth, and the first fixed unidirectional meshing tooth and the second fixed unidirectional meshing tooth are staggered.

[0008] Preferably, the unidirectional drive mechanism includes a first spring block, a second spring block, a moving engagement tooth, a deformation groove, and a pressing hole. The first spring block and the second spring block are both fixedly sleeved on the outer wall of the main shaft, and the first spring block and the second spring block are fixedly connected by a pin. The moving engagement tooth is integrally disposed on the outer wall of the first spring block and the outer wall of the second spring block. The deformation groove is respectively opened on one side of the first spring block and one side of the second spring block. The pressing hole is respectively opened through both sides of the first spring block and both sides of the second spring block. The first spring block is engaged with the first unidirectional internal gear ring through the moving engagement tooth and the first fixed unidirectional engagement tooth. The second spring block is engaged with the second unidirectional internal gear ring through the moving engagement tooth and the second fixed unidirectional engagement tooth.

[0009] Preferably, the unidirectional drive mechanism further includes an outer torsion block, an inner torsion block, and a deflector column. The outer torsion block and the inner torsion block are rotatably connected to the main shaft via bearings. The deflector column is fixedly connected between the outer torsion block and the inner torsion block, and the outer wall of the deflector column is slidably connected to the inner wall of the pressure hole.

[0010] Preferably, the unidirectional drive mechanism further includes a guide plate and a guide hole. The guide plate is fixedly connected to one side of the first spring block, and the guide hole is opened through both sides of the guide plate. The inner wall of the guide hole is slidably connected to the outer wall of the actuating column.

[0011] Preferably, the power mechanism includes a motor frame, a drive motor, an output shaft, a drive gear, and a driven gear. The motor frame is fixedly connected to one side of the mounting bracket, the drive motor is fixedly mounted on the inner wall of the motor frame, the output shaft is fixedly connected to the output end of the drive motor via a coupling, the drive gear is fixedly sleeved on the outer wall of the output shaft, the driven gear is fixedly sleeved on the outer wall of the outer torsion block, and the drive gear and the driven gear are meshed together.

[0012] Preferably, the depth counting mechanism includes a first limiting frame, a first winding wheel, and a scale tape. The first limiting frame is fixedly connected to the inner wall of the mounting frame, the first winding wheel is fixedly connected to the outer wall of one end of the main shaft, and the scale tape is fixedly connected to the outer wall of the first winding wheel and is wound around the surface of the first winding wheel.

[0013] Preferably, the depth counting mechanism further includes an axle, a guide wheel, a third cover plate, and a glass plate. The axle is fixedly connected to the inner wall of the mounting frame, the guide wheel is movably sleeved on the outer wall of the axle, the scale band is tumblingly connected to the guide wheel, and the surface of the scale band is provided with scales. The third cover plate is fixedly connected to one side of the mounting frame, and the glass plate is fixedly connected to the inner wall of the third cover plate, with the glass plate located above the scale band.

[0014] Preferably, the winding mechanism includes a second limiting frame, a connecting pin, a protective cover, a guide shaft, a second winding wheel, and a spiral spring. The second limiting frame is fixedly connected to the inner wall of the mounting frame. The connecting pin is fixedly inserted into the inner wall of the second limiting frame. The protective cover is fixedly connected to one side of the second limiting frame. The guide shaft is rotatably connected to the inner wall of the second limiting frame via a bearing. The second winding wheel is fixedly connected to the outer wall of the guide shaft, and the outer wall of the second winding wheel is fixedly connected to the end of the scale tape away from the first winding wheel. The scale tape is wound around the surface of the second winding wheel. The spiral spring is installed inside the protective cover, and one end of the spiral spring is fixedly connected to one end of the guide shaft, and the other end of the spiral spring is fixedly connected to the connecting pin.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This river water quality monitoring device, consisting of a water quality detector, chassis, probe connection cable, water quality detection probe, float, mounting frame, first cover plate, lifting and actuating mechanism, locking mechanism, one-way drive mechanism, power mechanism, depth counting mechanism, winding mechanism, and second cover plate, can control the water depth of the water quality detection probe by driving the one-way drive mechanism through the power mechanism, which in turn drives the lifting and actuating mechanism to move the probe connection cable, thus facilitating the detection of water quality at a specified depth.

[0016] This river water quality monitoring device, through the configuration of a first one-way internal gear ring, a second one-way internal gear ring, a first spring block, a second spring block, a moving meshing tooth, a deformation groove, a pressure hole, an outer torsion block, an inner torsion block, a shifting column, a guide plate, and a guide hole, can achieve unidirectional transmission of the outer torsion block to the main shaft by using the first and second one-way internal gear rings to unidirectionally limit the first and second spring blocks respectively. This avoids reverse transmission of the main shaft and ensures the locking of the main shaft. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2This is a schematic diagram of the mounting frame structure of the present invention; Figure 3 This is a schematic diagram of the structure at the location of the depth counting mechanism of the present invention; Figure 4 This is a schematic diagram of the structure at the location of the unidirectional drive mechanism of the present invention; Figure 5 This is a schematic diagram of the connection structure between the unidirectional drive mechanism and the lifting and actuating mechanism of the present invention; Figure 6 This is a schematic diagram of the internal structure of the depth counting mechanism of the present invention; Figure 7 This is a schematic diagram of the structure at the position of the scale band in this invention; Figure 8 This is a schematic diagram of the unidirectional drive mechanism of the present invention; Figure 9 This is a schematic diagram of the internal exploded structure of the unidirectional drive mechanism of the present invention; Figure 10 This is a schematic diagram of the connection structure between the first and second spring blocks of the present invention; Figure 11 This is a schematic diagram of the connection structure between the first unidirectional internal toothed ring and the first spring block of the present invention.

[0018] In the diagram: 1. Water quality analyzer; 2. Chassis; 3. Probe connection cable; 4. Water quality probe; 5. Float; 6. Mounting bracket; 7. First cover plate; 801. Main shaft; 802. Sub-shaft; 803. Main actuating wheel; 804. Driven actuating wheel; 805. Limiting groove; 901. First one-way internal gear ring; 902. Second one-way internal gear ring; 1001. First spring block; 1002. Second spring block; 1003. Moving meshing tooth; 1004. Deformation groove; 1005. Pressing hole; 1006. External torsion block; 1007. Internal torsion block; 1008. Actuating column; 1009. 1010 Guide plate; 1101 Guide hole; 1102 Motor frame; 1103 Drive motor; 1104 Output shaft; 1105 Drive gear; 1106 Driven gear; 1201 First limit frame; 1202 First winding wheel; 1203 Scale strip; 1204 Wheel axle; 1205 Guide wheel; 1206 Third cover plate; 1207 Glass plate; 1301 Second limit frame; 1302 Connecting pin; 1303 Protective cover; 1304 Guide shaft; 1305 Second winding wheel; 1306 Spiral spring; 14 Second cover plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-11 A river water quality monitoring device includes: a water quality analyzer 1 and a chassis 2. A probe connection cable 3 is fixedly installed on one side of the water quality analyzer 1, and a water quality detection probe 4 is fixedly installed at the end of the probe connection cable 3 away from the water quality analyzer 1. A float 5 is fixedly connected to the bottom of the chassis 2, and a mounting frame 6 is fixedly connected to the upper surface of the chassis 2. A first cover plate 7 is fixedly connected to the inner wall of the mounting frame 6, and a second cover plate 14 is fixedly connected to one side of the mounting frame 6. A lifting and actuating mechanism is provided inside the mounting frame 6, and a locking mechanism is fixedly connected to one side of the mounting frame 6. A one-way drive mechanism is provided inside the locking mechanism, and a power unit is provided on one side of the one-way drive mechanism. The structure includes a depth counting mechanism on the side of the mounting frame 6 away from the second cover plate 14, and a winding mechanism on the side of the depth counting mechanism. This river water quality monitoring device, through the water quality detector 1, chassis 2, probe connection line 3, water quality detection probe 4, float 5, mounting frame 6, first cover plate 7, lifting and actuating mechanism, locking mechanism, one-way drive mechanism, power mechanism, depth counting mechanism, winding mechanism, and second cover plate 14, can drive the one-way drive mechanism through the power mechanism, thereby driving the lifting and actuating mechanism to move the probe connection line 3, thus controlling the water depth of the water quality detection probe 4, facilitating the detection of water quality at a specified depth.

[0021] The lifting and actuating mechanism includes a main shaft 801, a secondary shaft 802, a main actuating wheel 803, a secondary actuating wheel 804, and a limiting groove 805. The main shaft 801 and the secondary shaft 802 are rotatably connected to the inner wall of the mounting frame 6 via bearings. The main actuating wheel 803 is fixedly sleeved on the outer wall of the main shaft 801, and the secondary actuating wheel 804 is fixedly sleeved on the outer wall of the secondary shaft 802. The limiting grooves 805 are respectively located in the middle of the main actuating wheel 803 and the middle of the secondary actuating wheel 804. Both the main actuating wheel 803 and the secondary actuating wheel 804 are made of rubber. The probe connecting line 3 is located inside the limiting groove 805 to facilitate the lifting and lowering of the probe connecting line 3.

[0022] The locking mechanism includes a first one-way internal toothed ring 901 and a second one-way internal toothed ring 902. Both the first one-way internal toothed ring 901 and the second one-way internal toothed ring 902 are fixedly connected to one side of the mounting frame 6. The interior of the first one-way internal toothed ring 901 and the interior of the second one-way internal toothed ring 902 are respectively provided with a first fixed one-way meshing tooth and a second fixed one-way meshing tooth. The first fixed one-way meshing tooth and the second fixed one-way meshing tooth are staggered to facilitate cooperation with the first spring block 1001 and the second spring block 1002 to achieve bidirectional limiting.

[0023] The unidirectional drive mechanism includes a first spring block 1001, a second spring block 1002, a moving engagement tooth 1003, a deformation groove 1004, and a pressing hole 1005. The first spring block 1001 and the second spring block 1002 are both fixedly sleeved on the outer wall of the main shaft 801, and are fixedly connected by a pin. The moving engagement tooth 1003 is integrally disposed on the outer wall of the first spring block 1001 and the outer wall of the second spring block 1002. The deformation groove 1004 is respectively formed on one of the first spring blocks 1001. On one side of the first spring block 1001 and the second spring block 1002, pressure holes 1005 are respectively opened through both sides of the first spring block 1001 and the second spring block 1002. The first spring block 1001 is connected to the first one-way internal toothed ring 901 through the moving meshing tooth 1003 and the first fixed one-way meshing tooth. The second spring block 1002 is connected to the second one-way internal toothed ring 902 through the moving meshing tooth 1003 and the second fixed one-way meshing tooth, so as to cooperate with the first one-way internal toothed ring 901 and the second one-way internal toothed ring 902 to achieve bidirectional limiting.

[0024] The unidirectional drive mechanism also includes an outer torsion block 1006, an inner torsion block 1007, and a toggle post 1008. The outer torsion block 1006 and the inner torsion block 1007 are rotatably connected to the main shaft 801 through bearings. The toggle post 1008 is fixedly connected between the outer torsion block 1006 and the inner torsion block 1007, and the outer wall of the toggle post 1008 is slidably connected to the inner wall of the pressure hole 1005.

[0025] The one-way drive mechanism includes a guide plate 1009 and a guide hole 1010. The guide plate 1009 is fixedly connected to one side of the first spring block 1001. The guide hole 1010 is formed through both sides of the guide plate 1009, and the inner wall of the guide hole 1010 is slidably connected to the outer wall of the actuating post 1008. The mechanism is driven by a first one-way internal gear ring 901, a second one-way internal gear ring 902, a first spring block 1001, a second spring block 1002, and a moving meshing tooth 100. 3. The deformation groove 1004, pressure hole 1005, outer torsion block 1006, inner torsion block 1007, actuating post 1008, guide plate 1009 and guide hole 1010 can realize the unidirectional transmission of the outer torsion block 1006 to the main shaft 801 by using the first one-way inner gear ring 901 and the second one-way inner gear ring 902 to limit the first spring block 1001 and the second spring block 1002 in one direction, thereby avoiding the reverse transmission of the main shaft 801 and ensuring the locking of the main shaft 801.

[0026] The power mechanism includes a motor frame 1101, a drive motor 1102, an output shaft 1103, a drive gear 1104, and a driven gear 1105. The motor frame 1101 is fixedly connected to one side of the mounting bracket 6. The drive motor 1102 is fixedly installed on the inner wall of the motor frame 1101. The output shaft 1103 is fixedly connected to the output end of the drive motor 1102 via a coupling. The drive gear 1104 is fixedly sleeved on the outer wall of the output shaft 1103. The driven gear 1105 is fixedly sleeved on the outer wall of the outer torsion block 1006. The drive gear 1104 and the driven gear 1105 are meshed together for transmission.

[0027] The depth counting mechanism includes a first limiting frame 1201, a first take-up wheel 1202, and a scale belt 1203. The first limiting frame 1201 is fixedly connected to the inner wall of the mounting frame 6, the first take-up wheel 1202 is fixedly connected to the outer wall of one end of the main shaft 801, and the scale belt 1203 is fixedly connected to the outer wall of the first take-up wheel 1202. The scale belt 1203 is wound around the surface of the first take-up wheel 1202 to facilitate active winding and unwinding of the scale belt 1203.

[0028] The depth counting mechanism also includes an axle 1204, a guide wheel 1205, a third cover plate 1206, and a glass plate 1207. The axle 1204 is fixedly connected to the inner wall of the mounting frame 6, the guide wheel 1205 is movably sleeved on the outer wall of the axle 1204, the scale band 1203 is tumbledly connected to the guide wheel 1205, and the surface of the scale band 1203 is provided with scales. The third cover plate 1206 is fixedly connected to one side of the mounting frame 6, and the glass plate 1207 is fixedly connected to the inner wall of the third cover plate 1206, and the glass plate 1207 is located above the scale band 1203, so that the water depth can be indirectly understood by observing the scales on the surface of the scale band 1203.

[0029] The winding mechanism includes a second limiting frame 1301, a connecting pin 1302, a protective cover 1303, a guide shaft 1304, a second winding wheel 1305, and a spiral spring 1306. The second limiting frame 1301 is fixedly connected to the inner wall of the mounting frame 6. The connecting pin 1302 is fixedly inserted into the inner wall of the second limiting frame 1301. The protective cover 1303 is fixedly connected to one side of the second limiting frame 1301. The guide shaft 1304 is rotatably connected to the inner wall of the second limiting frame 1301 via a bearing. The second winding wheel 1305 is fixedly... The outer wall of the guide shaft 1304 is fixedly connected, and the outer wall of the second take-up roller 1305 is fixedly connected to the end of the scale strip 1203 away from the first take-up roller 1202. The scale strip 1203 is wound around the surface of the second take-up roller 1305. The spiral spring 1306 is installed inside the protective cover 1303. One end of the spiral spring 1306 is fixedly connected to one end of the guide shaft 1304, and the other end of the spiral spring 1306 is fixedly connected to the connecting pin 1302, so as to facilitate the driven winding and unwinding of the scale strip 1203.

[0030] Working principle: During use, when the driven gear 1105 rotates forward, it drives the outer torsion block 1006, the inner torsion block 1007, and the actuating pin 1008 to rotate synchronously forward. At this time, the actuating pin 1008 slides along the guide hole 1010 and compresses the second spring block 1002. Simultaneously, the second one-way internal gear ring 902 engages and limits the forward rotation of the second spring block 1002, while the first one-way internal gear ring 901 does not limit the forward rotation of the first spring block 1001. Until the actuating pin 1008 slides to its end position, the actuating pin 1008 will compress the pressure hole 1005 of the second spring block 1002, causing the end of the second spring block 1002 to be pressed inward. The moving meshing teeth 1003 on its surface disengage from the second one-way internal gear ring 902. At this time, the first spring block 1002... 1. The first and second spring blocks 1002 rotate with the rotation of the actuating post 1008. The main shaft 801 rotates synchronously in the forward direction. When the driven gear 1105 reverses, it drives the outer torsion block 1006, the inner torsion block 1007, and the actuating post 1008 to rotate synchronously in the reverse direction. At this time, the actuating post 1008 slides along the guide hole 1010 and compresses the first spring block 1001. At the same time, the first one-way internal gear ring 901 engages and limits the reverse rotation of the first spring block 1001, while the second one-way internal gear ring 902 does not limit the reverse rotation of the second spring block 1002. Until the actuating post 1008 slides to the end of its position, the actuating post 1008 will compress the pressure hole 1005 of the first spring block 1001, causing the end of the first spring block 1001 to be pressed inward, and the moving meshing teeth 1 on its surface to engage. 003 disengages from the first one-way internal gear ring 901. At this time, the first spring block 1001 and the second spring block 1002 rotate with the rotation of the actuating column 1008, and the main shaft 801 rotates synchronously in the opposite direction. When the main shaft 801 rotates, the moving meshing teeth 1003 on the surfaces of the first spring block 1001 and the second spring block 1002 will mesh with the first one-way internal gear ring 901 and the second one-way internal gear ring 902 respectively. The main shaft 801 cannot drive the outer torsion block 1006 to rotate in the opposite direction, thus forming a one-way transmission lock. During measurement, the chassis 2 is placed on the water surface so that the water quality detection probe 4 is underwater. Then the drive motor 1102 is started. The drive motor 1102 drives the drive gear 1104 to reverse through the output shaft 1103. 04 drives the driven gear 1105 to rotate forward. When the driven gear 1105 rotates forward, it drives the main shaft 801 to rotate synchronously forward through the above transmission. The main shaft 801, through the main actuating wheel 803, causes the probe connecting cable 3 to extend upward, causing the water quality detection probe 4 to rise. When the main shaft 801 rotates, it drives the first winding wheel 1202 to rotate. When the first winding wheel 1202 rotates, it winds up the scale tape 1203. At the same time, the scale tape 1203 drives the second winding wheel 1305 to rotate. The second winding wheel 1305 drives the spiral spring 1306 to contract through the guide shaft 1304 until the water quality detection probe 4 rises to the end position. At this time, the scale value of the scale tape 1203 below can be observed to be zero through the glass plate 1207, and the drive motor 1102 stops.Pulling the probe connection cable 3 moves the water quality detection probe 4 to the bottom of the limiting groove 805, bringing the position of the water quality detection probe 4 to zero. Then, start the drive motor 1102. The drive motor 1102 drives the drive gear 1104 to rotate forward through the output shaft 1103. The drive gear 1104 drives the driven gear 1105 to rotate in reverse. When the driven gear 1105 rotates in reverse, it drives the main shaft 801 to rotate synchronously in the opposite direction through the above transmission. The main shaft 801 moves the probe connection cable 3 downward through the main actuation wheel 803, causing the water quality detection probe 4 to move downward. As the probe 4 descends, the rotation of the main shaft 801 causes the first take-up wheel 1202 to rotate, unwinding the scale band 1203. Simultaneously, the spiral spring 1306 gradually returns to its original position. The spiral spring 1306, through the guide shaft 1304, drives the second take-up wheel 1305 to rotate, winding the scale band 1203 until the water quality probe 4 descends to the designated position. At this point, the scale value of the scale band 1203 observed through the glass plate 1207 represents the water depth.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A river water quality monitoring device, characterized in that, include: A water quality tester (1) and a chassis (2) are provided. A probe connection line (3) is fixedly installed on one side of the water quality tester (1). A water quality test probe (4) is fixedly installed at the end of the probe connection line (3) away from the water quality tester (1). A float (5) is fixedly connected to the bottom of the chassis (2). A mounting frame (6) is fixedly connected to the upper surface of the chassis (2). A first cover plate (7) is fixedly connected to the inner wall of the mounting frame (6). A second cover plate (14) is fixedly connected to one side of the mounting frame (6). A lifting and turning mechanism is provided inside the mounting frame (6). A locking mechanism is fixedly connected to one side of the mounting frame (6). A one-way drive mechanism is provided inside the locking mechanism. A power mechanism is provided on one side of the one-way drive mechanism. A depth counting mechanism is provided on the side of the mounting frame (6) away from the second cover plate (14). A winding mechanism is provided on one side of the depth counting mechanism. The lifting and actuating mechanism includes a main shaft (801) and a secondary shaft (802), both of which are rotatably connected to the inner wall of the mounting frame (6) via bearings; The positioning mechanism includes a first one-way internal toothed ring (901) and a second one-way internal toothed ring (902). The first one-way internal toothed ring (901) and the second one-way internal toothed ring (902) are both fixedly connected to one side of the mounting bracket (6). The first one-way internal toothed ring (901) and the second one-way internal toothed ring (902) are respectively provided with a first fixed one-way meshing tooth and a second fixed one-way meshing tooth, and the first fixed one-way meshing tooth and the second fixed one-way meshing tooth are staggered. The unidirectional drive mechanism includes a first spring block (1001), a second spring block (1002), a moving meshing tooth (1003), a deformation groove (1004), and a pressure hole (1005). The first spring block (1001) and the second spring block (1002) are both fixedly sleeved on the outer wall of the main shaft (801), and the first spring block (1001) and the second spring block (1002) are fixedly connected by a pin. The moving meshing tooth (1003) is integrally disposed on the outer wall of the first spring block (1001) and the outer wall of the second spring block (1002). The deformation groove (1004)... The grooves (1004) are respectively opened on one side of the first spring block (1001) and one side of the second spring block (1002). The pressure holes (1005) are respectively opened through both sides of the first spring block (1001) and both sides of the second spring block (1002). The first spring block (1001) is connected to the first one-way internal toothed ring (901) through the moving meshing teeth (1003) and the first fixed one-way meshing teeth. The second spring block (1002) is connected to the second one-way internal toothed ring (902) through the moving meshing teeth (1003) and the second fixed one-way meshing teeth. The unidirectional drive mechanism further includes an outer torsion block (1006), an inner torsion block (1007), and a toggle post (1008). The outer torsion block (1006) and the inner torsion block (1007) are rotatably connected to the main shaft (801) through bearings. The toggle post (1008) is fixedly connected between the outer torsion block (1006) and the inner torsion block (1007), and the outer wall of the toggle post (1008) is slidably connected to the inner wall of the pressure hole (1005).

2. The river water quality monitoring device according to claim 1, characterized in that, The lifting and actuating mechanism includes a main actuating wheel (803), a secondary actuating wheel (804), and a limiting groove (805). The main actuating wheel (803) is fixedly sleeved on the outer wall of the main shaft (801), and the secondary actuating wheel (804) is fixedly sleeved on the outer wall of the secondary shaft (802). The limiting groove (805) is respectively located in the middle of the main actuating wheel (803) and the middle of the secondary actuating wheel (804). Both the main actuating wheel (803) and the secondary actuating wheel (804) are made of rubber. The probe connecting line (3) is located inside the limiting groove (805).

3. The river water quality monitoring device according to claim 1, characterized in that, The unidirectional drive mechanism also includes a guide plate (1009) and a guide hole (1010). The guide plate (1009) is fixedly connected to one side of the first spring block (1001). The guide hole (1010) is opened through both sides of the guide plate (1009), and the inner wall of the guide hole (1010) is slidably connected to the outer wall of the actuating column (1008).

4. The river water quality monitoring device according to claim 1, characterized in that, The power mechanism includes a motor frame (1101), a drive motor (1102), an output shaft (1103), a drive gear (1104), and a driven gear (1105). The motor frame (1101) is fixedly connected to one side of the mounting bracket (6). The drive motor (1102) is fixedly installed on the inner wall of the motor frame (1101). The output shaft (1103) is fixedly connected to the output end of the drive motor (1102) through a coupling. The drive gear (1104) is fixedly sleeved on the outer wall of the output shaft (1103). The driven gear (1105) is fixedly sleeved on the outer wall of the outer torsion block (1006), and the drive gear (1104) and the driven gear (1105) are meshed together.

5. A river water quality monitoring device according to claim 1, characterized in that, The depth counting mechanism includes a first limiting frame (1201), a first take-up roller (1202), and a scale belt (1203). The first limiting frame (1201) is fixedly connected to the inner wall of the mounting frame (6), the first take-up roller (1202) is fixedly connected to the outer wall of one end of the main shaft (801), and the scale belt (1203) is fixedly connected to the outer wall of the first take-up roller (1202) and is wound around the surface of the first take-up roller (1202).

6. A river water quality monitoring device according to claim 5, characterized in that, The depth counting mechanism also includes an axle (1204), a guide wheel (1205), a third cover plate (1206), and a glass plate (1207). The axle (1204) is fixedly connected to the inner wall of the mounting frame (6). The guide wheel (1205) is movably sleeved on the outer wall of the axle (1204). The scale band (1203) is tumbledly connected to the guide wheel (1205), and the surface of the scale band (1203) is provided with scales. The third cover plate (1206) is fixedly connected to one side of the mounting frame (6). The glass plate (1207) is fixedly connected to the inner wall of the third cover plate (1206), and the glass plate (1207) is located above the scale band (1203).

7. A river water quality monitoring device according to claim 6, characterized in that, The winding mechanism includes a second limiting frame (1301), a connecting pin (1302), a protective cover (1303), a guide shaft (1304), a second winding wheel (1305), and a spiral spring (1306). The second limiting frame (1301) is fixedly connected to the inner wall of the mounting frame (6). The connecting pin (1302) is fixedly inserted into the inner wall of the second limiting frame (1301). The protective cover (1303) is fixedly connected to one side of the second limiting frame (1301). The guide shaft (1304) is rotatably connected to the inner wall of the second limiting frame (1301) via a bearing. The second take-up roller (1305) is fixedly connected to the outer wall of the guide shaft (1304), and the outer wall of the second take-up roller (1305) is fixedly connected to the end of the scale strip (1203) away from the first take-up roller (1202), and the scale strip (1203) is wound around the surface of the second take-up roller (1305). The spiral spring (1306) is installed inside the protective cover (1303), and one end of the spiral spring (1306) is fixedly connected to one end of the guide shaft (1304), and the other end of the spiral spring (1306) is fixedly connected to the connecting pin (1302).

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