A water quality monitoring device for a low water level river

Abstract

The present invention discloses a water quality monitoring device for a low-water-level river, and belongs to the field of water quality monitoring. A water quality monitoring device for a low-water-level river comprises a monitoring box, the bottom of which is rotatably connected with a liquid extraction pipe, a liquid extraction chamber is provided in the monitoring box, the liquid extraction pipe passes through the monitoring box upward and extends into the liquid extraction chamber, and further comprises: a monitoring component, the monitoring component is arranged in the monitoring box; the present invention collects water samples of different water depths in the river in real time through three groups of liquid extraction troughs of different heights, and simultaneously detects through three groups of independent monitoring sensors, so as to obtain water quality conditions of different water depths in real time, realize more comprehensive water quality detection, improve detection effect, and make water quality monitoring results more representative; and the extracted water flow is discharged toward the opposite end along the outlet pipe, so that the monitoring box rotates in the river, so that water flow in a larger range can be extracted, and comprehensive sampling can be realized, further improving the water quality detection effect.

Description

Technical Field

[0001] The invention relates to the technical field of water quality monitoring, and in particular to a water quality monitoring device for a low water level river. Background Art

[0002] Water quality monitoring is a key link in ensuring the health of water bodies and water resource management. It involves regular or continuous testing of various physical, chemical and biological parameters in water bodies to assess water quality conditions and pollution trends. Water quality monitoring has far-reaching significance for maintaining a healthy water environment, protecting human health, supporting economic activities and ecological balance. Through continuous water quality monitoring, water quality problems can be discovered and responded to in a timely manner, and necessary prevention and control measures can be taken to protect and restore the natural state of water bodies.

[0003] At present, the existing monitoring devices can usually only monitor the water quality of a certain point in the river for a long time. The monitoring range is small, resulting in unrepresentative water quality monitoring results. Moreover, the monitoring sensor is in the water body for a long time, and a certain amount of water impurities will adhere to its surface, resulting in reduced monitoring effect of the monitoring sensor. Therefore, a water quality monitoring device for low water level rivers is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when existing devices are performing water quality monitoring, the monitoring range is small, resulting in unrepresentative monitoring results; and during the long-term monitoring process, a certain amount of water impurities adhere to the surface of the sensor, resulting in reduced monitoring effect. A water quality monitoring device for low water level rivers is proposed to solve the problem that

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

[0006] A water quality monitoring device for a low-water-level river comprises a monitoring box, the bottom of which is rotatably connected to a liquid extraction pipe, a liquid extraction chamber is provided in the monitoring box, the liquid extraction pipe upwardly penetrates the monitoring box and extends into the liquid extraction chamber, and further comprises: a monitoring component, the monitoring component is arranged in the monitoring box and is used to extract water samples at different depths in the river for monitoring; and a cleaning component, the cleaning component is arranged on the monitoring box and is used to clean the liquid extraction pipe and aerate the river during the monitoring process.

[0007] In order to realize stratified water extraction monitoring, preferably, the liquid pumping bins are provided with three groups, the liquid pumping pipes are respectively provided with three groups of liquid pumping troughs, the output ends of the liquid pumping troughs are respectively connected to the inner cavities of the three groups of liquid pumping bins, and the input ends of the liquid pumping troughs are located at different heights of the liquid pumping pipes.

[0008] Furthermore, the monitoring component includes a detection rod, and each group of the liquid extraction bins is provided with a monitoring groove on the side wall. The detection rod vertically penetrates multiple groups of monitoring grooves and extends to the outside of the monitoring box. A monitoring sensor is fixedly connected to the outer wall of the detection rod in each group of monitoring grooves. A driving groove is provided in the monitoring box, and a liquid extraction blade is rotatably connected in the driving groove. A driving motor is fixedly connected to the top of the monitoring box, and the output shaft of the driving motor and the rotating shaft of the liquid extraction blade are connected through a first pulley group.

[0009] In order to improve the monitoring range, preferably, a water outlet pipe is fixedly connected to the bottom of the monitoring box, a drain pipe is fixed and connected to the side wall of the driving groove, and the other end of the drain pipe is connected to the inner cavity of the water outlet pipe, and the two ends of the water outlet pipe are respectively located on both sides of the monitoring box and in opposite directions.

[0010] In order to improve the water pumping effect, preferably, the cleaning component includes a reciprocating screw, which is rotatably connected to the bottom of the monitoring box, a linkage groove is provided in the monitoring box, the reciprocating screw penetrates the linkage groove upward, and a driven impeller is fixedly connected to the outer wall of the reciprocating screw located in the linkage groove, an air pressure groove is provided in the monitoring box, and two groups of air pressure grooves are symmetrically arranged along the center of the driving groove, a first magnetic plate is slidably connected in the air pressure groove, a second magnetic plate is fixedly connected to the blade end of the liquid pumping blade, and the The second magnetic plate and the first magnetic plate magnetically repel each other, a first spring is fixedly connected between the side wall of the first magnetic plate and the air pressure groove, an air guide groove is opened between the side wall of the air pressure groove and the linkage groove, the air guide grooves on both sides of the linkage groove are oriented in opposite directions and are staggered, a sliding block is threadedly sleeved on the reciprocating screw, a cleaning wiping ring is fixedly connected to the side wall of the sliding block, and the cleaning wiping ring is slidably sleeved on the liquid extraction tube, the top of the air pressure groove is fixed and connected to an air supply pipe, and a one-way valve is provided in the air supply pipe and the air guide groove.

[0011] In order to achieve water purification, preferably, an aeration groove is opened inside the reciprocating screw, and a one-way valve is arranged in the aeration groove, and an exhaust hole is opened on the side wall of the rotating shaft of the driven impeller, and the exhaust hole is connected to the inner cavity of the aeration groove.

[0012] In order to improve the monitoring accuracy, preferably, a telescopic slot is opened inside the monitoring box, the detection rod passes through the center of the telescopic slot, and a limit plate is fixedly connected to the outer wall of the detection rod located in the telescopic slot, a second spring is sleeved on the outer wall of the detection rod, and the two ends of the second spring are respectively fixedly connected to the top of the limit plate and the top of the telescopic slot, a cleaning slot is opened on the top of each group of monitoring slots, cleaning cotton is fixedly connected in the cleaning slot, and the inner diameter shape of the cleaning cotton matches the outer diameter shape of the monitoring sensor, a trigger rod is fixedly connected to the side wall of the cleaning wipe ring, and the top of the trigger rod is in active contact with the bottom end of the detection rod.

[0013] In order to improve the detection effect, preferably, a transmission groove is opened on the surface of the monitoring box, the top ends of the reciprocating screw rod and the liquid extraction tube extend through the transmission groove, and the reciprocating screw rod and the liquid extraction tube are connected by a second pulley set.

[0014] In order to improve the monitoring stability, preferably, a buoyancy ring is fixedly connected to the side wall of the monitoring box, and a plurality of groups of weighted balls are fixed at equal intervals on the bottom of the buoyancy ring.

[0015] In order to improve the energy-saving effect, preferably, a photovoltaic power generation module is fixedly connected to the top of the monitoring box, and the photovoltaic power generation module is electrically connected to the driving motor.

[0016] Compared with the prior art, the present invention provides a water quality monitoring device for a low water level river, which has the following beneficial effects:

[0017] 1. The water quality monitoring device for low-water-level rivers collects water samples at different water depths in the river in real time through three groups of pumping troughs at different heights, and simultaneously detects through three groups of independent monitoring sensors, so as to obtain the water quality conditions at different water depths in real time, realize more comprehensive water quality detection, improve the detection effect, and make the water quality monitoring results more representative; and the extracted water flow is discharged along the outlet pipe toward the opposite end, so that the monitoring box rotates in the river, so that water flow in a larger range can be extracted, comprehensive sampling can be achieved, and the water quality detection effect is further improved.

[0018] 2. The water quality monitoring device for the low-water-level river channel, through the repulsive action of the second magnetic plate and the first magnetic plate, continuously fills the gas in the air pressure groove into the linkage groove during the rotation of the pumping blade, thereby pushing the driven impeller to drive the reciprocating screw to rotate, so that the cleaning ring reciprocates and wipes the outer wall of the pumping tube, improves the cleanliness of the surface of the pumping tube, and avoids the situation where the input end of the pumping groove is blocked by floating objects in the river channel, thereby improving the water pumping sampling effect.

[0019] 3. The water quality monitoring device for low-water-level rivers, through the cooperation between the trigger rod and the detection rod, will insert the monitoring sensor into the cleaning groove when the cleaning wiping ring moves upward, so that the outer wall of the monitoring sensor can be cleaned with cleaning cotton to remove impurities in the water attached to its side wall, thereby ensuring the cleanliness of the surface of the monitoring sensor and improving the monitoring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a water quality monitoring device for a low water level river proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of a water quality monitoring device for a low-water-level river proposed by the present invention when viewed from above;

[0022] Figure 3 A schematic diagram of the top view of a water quality monitoring device for a low water level river proposed by the present invention;

[0023] Figure 4 A schematic diagram of a side view of a half-section structure of a water quality monitoring device for a low-water-level river proposed by the present invention;

[0024] Figure 5 A water quality monitoring device for a low water level river proposed by the present invention Figure 4 A schematic diagram of the enlarged structure of the middle A area;

[0025] Figure 6 A schematic diagram of a reciprocating screw rod connection structure of a water quality monitoring device for a low water level river proposed by the present invention;

[0026] Figure 7 A schematic diagram of a partial cross-sectional structure of a water quality monitoring device for a low-water-level river proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of a driving tank of a water quality monitoring device for a low water level river proposed by the present invention.

[0028] In the figure: 1, monitoring box; 2, liquid extraction pipe; 21, liquid extraction chamber; 22, liquid extraction tank; 23, transmission tank; 231, second pulley group; 3, detection rod; 31, monitoring tank; 32, monitoring sensor; 33, drive tank; 34, liquid extraction blade; 341, second magnetic plate; 35, drive motor; 351, first pulley group; 36, water outlet pipe; 361, drain pipe; 4, reciprocating screw rod; 41, linkage tank; 41 1. Driven impeller; 412. Exhaust hole; 42. Air pressure groove; 421. First magnetic plate; 422. First spring; 423. Air supply pipe; 43. Air guide groove; 44. Sliding block; 45. Cleaning wiping ring; 451. Trigger rod; 46. Aeration groove; 5. Telescopic groove; 51. Limiting plate; 52. Second spring; 53. Cleaning groove; 531. Cleaning cotton; 6. Buoyancy ring; 61. Counterweight ball; 7. Photovoltaic power generation module. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Reference Figure 1-Figure 8 A water quality monitoring device for a low-water-level river comprises a monitoring box 1, the bottom of which is rotatably connected to a liquid extraction pipe 2, a liquid extraction tank 21 being provided in the monitoring box 1, the liquid extraction pipe 2 upwardly penetrates the monitoring box 1 and extends into the liquid extraction tank 21, and further comprises: a monitoring component, which is arranged in the monitoring box 1 and is used to extract water samples at different depths in the river for monitoring; and a cleaning component, which is arranged on the monitoring box 1 and is used to clean the liquid extraction pipe 2 and aerate the river during the monitoring process.

[0032] Reference Figure 4 , Figure 8 , wherein three groups of liquid extraction bins 21 are provided, and three groups of liquid extraction grooves 22 are respectively provided in the liquid extraction tube 2, the output ends of the liquid extraction grooves 22 are respectively connected to the inner cavities of the three groups of liquid extraction bins 21, and the input ends of the liquid extraction grooves 22 are located at different heights of the liquid extraction tube 2; the monitoring component includes a detection rod 3, and the side wall of each group of liquid extraction bins 21 is provided with a monitoring groove 31, the detection rod 3 vertically penetrates multiple groups of monitoring grooves 31 and extends to the outside of the monitoring box 1, and the outer wall of the detection rod 3 located in each group of monitoring grooves 31 is fixedly connected with a monitoring sensor 32, a driving groove 33 is provided in the monitoring box 1, and a liquid extraction blade 34 is rotatably connected in the driving groove 33, and a driving motor 35 is fixedly connected to the top of the monitoring box 1, and the output shaft of the driving motor 35 and the rotating shaft of the liquid extraction blade 34 are connected through a first pulley group 351.

[0033] It should be noted that the monitoring sensor 32 adopts existing mature technology, and the specific model is HD-SS300X turbidity sensor, which is used to monitor the turbidity in the river water. In addition, sensors of different models and functions can be replaced according to the needs of use.

[0034] Through the arrangement of the above structure, the driving motor 35 is turned on, and the pumping blade 34 is driven to rotate in the driving groove 33 through the first pulley group 351, so as to generate suction on the side of the driving groove 33 close to the monitoring groove 31, so that the water flow in the river channel enters different pumping tanks 21 along the pumping grooves 22 at different heights, and then flows into the driving groove 33 along the three groups of monitoring grooves 31 respectively. When the water flows through the monitoring groove 31, the water quality conditions at different water depths will be obtained in real time through the operation of the monitoring sensor 32, so as to realize more comprehensive water quality detection, improve the detection effect, and make the water quality monitoring results more representative.

[0035] Reference Figure 2 , Figure 4 A water outlet pipe 36 is fixedly connected to the bottom of the monitoring box 1, a drainage pipe 361 is fixed and connected to the side wall of the driving groove 33, and the other end of the drainage pipe 361 is connected to the inner cavity of the water outlet pipe 36, and the two ends of the water outlet pipe 36 are respectively located on both sides of the monitoring box 1 and facing opposite directions.

[0036] Through the arrangement of the above-mentioned structure, after the water flows into the driving groove 33, it will be pushed into the drain pipe 361 under the rotation of the pumping blade 34, and then enter the outlet pipe 36, and be discharged along its two sides toward the opposite output ends, thereby generating opposite thrusts on both sides of the bottom of the monitoring box 1, and finally the buoyancy ring 6 will rotate with the monitoring box 1 in the river channel, so that water flow in a larger range can be extracted, comprehensive sampling can be achieved, and the water quality detection effect is further improved.

[0037] Reference Figure 4 , Figure 7 and Figure 8, wherein the cleaning assembly includes a reciprocating screw 4, which is rotatably connected to the bottom of the monitoring box 1, a linkage groove 41 is provided in the monitoring box 1, the reciprocating screw 4 passes through the linkage groove 41 upward, and a driven impeller 411 is fixedly connected to the outer wall of the reciprocating screw 4 located in the linkage groove 41, an air pressure groove 42 is provided in the monitoring box 1, and two groups of air pressure grooves 42 are symmetrically arranged along the center of the driving groove 33, a first magnetic plate 421 is slidably connected in the air pressure groove 42, a second magnetic plate 341 is fixedly connected to the blade end of the liquid extraction blade 34, and the second magnetic plate 341 and the first magnetic plate 421 are magnetically repelled, and a first elastic plate 421 is fixedly connected between the side wall of the first magnetic plate 421 and the air pressure groove 42 Spring 422, an air guide groove 43 is provided between the side wall of the air pressure groove 42 and the linkage groove 41, the air guide grooves 43 located on both sides of the linkage groove 41 are in opposite directions and are staggered, a sliding block 44 is threadedly sleeved on the reciprocating screw 4, a cleaning wiping ring 45 is fixedly connected to the side wall of the sliding block 44, and the cleaning wiping ring 45 is slidably sleeved on the liquid extraction pipe 2, the top of the air pressure groove 42 is fixed and connected to the air supply pipe 423, and the air supply pipe 423 and the air guide groove 43 are both provided with a one-way valve; a transmission groove 23 is provided on the surface of the monitoring box 1, the reciprocating screw 4 and the top end of the liquid extraction pipe 2 both extend through the transmission groove 23, and the reciprocating screw 4 and the liquid extraction pipe 2 are transmission-connected through the second pulley group 231.

[0038] It should be noted that the one-way valve in the air guide groove 43 can only allow the airflow in the air pressure groove 42 to enter the linkage groove 41 ; the one-way valve in the air supply pipe 423 can only allow the fresh airflow from the outside to enter the air pressure groove 42 .

[0039] By setting the above structure, during the rotation of the liquid pumping blade 34, when the second magnetic plate 341 moves to the first magnetic plate 421, the repulsive effect between the two will cause the first magnetic plate 421 to retract into the air pressure groove 42, thereby compressing the gas in the air pressure groove 42, opening the one-way valve in the air guide groove 43, and allowing this part of the gas to enter the linkage groove 41 along the air guide groove 43. At this time, the airflow with impulse discharged from both sides of the linkage groove 41 will push the driven impeller 411 to rotate, thereby driving the reciprocating screw rod 4 to rotate, so that the sliding block 44 drives the cleaning wiping ring 45 to slide along the reciprocating screw rod 4, so as to use the cleaning wiping ring 45 to reciprocate and clean the outer wall of the liquid pumping tube 2, thereby improving the cleanliness of the surface of the liquid pumping tube 2, preventing aquatic organisms and impurities in the river water from adhering to the surface of the liquid pumping tube 2 and causing erosion and damage thereto, thereby improving the protection effect of the liquid pumping tube 2, and also avoiding the input end of the liquid pumping groove 22 from being blocked by floating objects in the river, thereby improving the water pumping sampling effect.

[0040] Reference Figure 4 , Figure 6 and Figure 7An aeration groove 46 is provided inside the reciprocating screw rod 4, and a one-way valve is provided inside the aeration groove 46. This one-way valve can only allow the airflow in the linkage groove 41 to be discharged along the aeration groove 46. An exhaust hole 412 is provided on the side wall of the rotating shaft of the driven impeller 411, and the exhaust hole 412 is connected with the inner cavity of the aeration groove 46. As the airflow is continuously filled into the linkage groove 41, the air pressure in the linkage groove 41 will increase, so that the airflow that loses its momentum will be pushed into the aeration groove 46 along the exhaust hole 412, and finally filled into the river water body from the bottom end of the aeration groove 46, so as to realize aeration of the river water body, increase the internal oxygen content, and improve the self-purification ability of the water body.

[0041] Reference Figure 4 , Figure 5 A telescopic slot 5 is provided inside the monitoring box 1, and the detection rod 3 passes through the center of the telescopic slot 5. A limit plate 51 is fixedly connected to the outer wall of the detection rod 3 located in the telescopic slot 5. A second spring 52 is sleeved on the outer wall of the detection rod 3, and the two ends of the second spring 52 are respectively fixedly connected to the top of the limit plate 51 and the top of the telescopic slot 5. A cleaning slot 53 is provided on the top of each group of monitoring slots 31. A cleaning cotton 531 is fixedly connected in the cleaning slot 53, and the inner diameter shape of the cleaning cotton 531 matches the outer diameter shape of the monitoring sensor 32. A trigger rod 451 is fixedly connected to the side wall of the cleaning wiping ring 45, and the top of the trigger rod 451 is in active contact with the bottom end of the detection rod 3.

[0042] Through the arrangement of the above-mentioned structure, when the cleaning wiping ring 45 slides upward, the trigger rod 451 will contact the bottom end of the detection rod 3 and push the detection rod 3 to move upward, so that the detection rod 3 with the monitoring sensor 32 is inserted into the cleaning groove 53, so that the outer wall of the monitoring sensor 32 is cleaned by the cleaning cotton 531 to remove impurities in the water attached to its side wall. Then, when the cleaning wiping ring 45 moves downward, under the rebound action of the second spring 52, the trigger rod 451 will move downward and reset, so that the monitoring sensor 32 moves into the monitoring groove 31 again, so that the outer wall of the monitoring sensor 32 can be cleaned intermittently and repeatedly while realizing monitoring, thereby ensuring the neatness of the surface of the monitoring sensor 32 and improving the monitoring effect.

[0043] Reference Figure 1-Figure 4 The side wall of the monitoring box 1 is fixedly connected with a buoyancy ring 6, which can provide evenly distributed buoyancy for the monitoring box 1. A plurality of groups of counterweight balls 61 are fixed at equal intervals on the bottom of the buoyancy ring 6. The counterweight balls 61 can increase the overall gravity of the monitoring box 1, so that it can float stably on the surface of the river, avoiding the shaking of the river surface and the rotation of the monitoring box 1, which may cause the entire device to tilt or tip over, thereby ensuring the stability of monitoring.

[0044] Among them, a photovoltaic power generation module 7 is fixedly connected to the top of the monitoring box 1, and the photovoltaic power generation module 7 is electrically connected to the driving motor 35. The photovoltaic power generation module 7 adopts the existing mature photovoltaic power generation technology, and its specific principle and structure are no longer repeated. The photovoltaic power generation module 7 can provide long-term power supply to the driving motor 35, which is convenient for long-term water quality monitoring work, and will not consume existing electricity resources, which is more energy-saving and environmentally friendly.

[0045] Reference Figure 1-Figure 8 In the present invention, when in use, the device is placed as a whole in the river channel to be monitored, and the buoyancy of the buoyancy ring 6 and the monitoring box 1 is used to make it float on the water surface of the river channel. Then the driving motor 35 starts to work, and drives the pumping blade 34 to rotate in the driving groove 33 through the first pulley group 351, so as to generate suction on the side of the driving groove 33 close to the monitoring groove 31, so that the water flow in the river channel enters different pumping bins 21 along the pumping grooves 22 at different heights, and then flows into the driving groove 33 along the three groups of monitoring grooves 31 respectively. When the water flows through the monitoring groove 31, the monitoring sensor 31 is used to detect the water flow. The operation of the sensor 32 will obtain the water quality conditions of different water depths in real time, realize a more comprehensive water quality detection, improve the detection effect, and make the monitoring result more representative; after the water flow enters the driving groove 33, it will be pushed into the drain pipe 361 under the rotation of the pumping blade 34, and then enter the outlet pipe 36, and be discharged along its two sides toward the opposite output ends, thereby generating opposite thrusts on both sides of the bottom of the monitoring box 1, and finally the buoyancy ring 6 will rotate with the monitoring box 1 in the river channel, so that water flow in a larger range can be extracted, comprehensive sampling can be achieved, and the water quality detection effect is further improved.

[0046] And in the process of rotation of the liquid extraction blade 34, when the second magnetic plate 341 moves to the first magnetic plate 421, the repulsive effect between the two will cause the first magnetic plate 421 to retract into the air pressure groove 42, thereby compressing the gas in the air pressure groove 42 and allowing this part of the gas to enter the linkage groove 41 along the air guide groove 43. At this time, the airflow with impulse discharged from both sides of the linkage groove 41 will push the driven impeller 411 to rotate, thereby driving the reciprocating screw rod 4 to rotate, so that the sliding block 44 drives the cleaning wiping ring 45 to slide along the reciprocating screw rod 4, so that the cleaning wiping ring 45 is used to reciprocately wipe and clean the outer wall of the liquid extraction pipe 2, thereby improving the cleanliness of the surface of the liquid extraction pipe 2, preventing aquatic organisms and impurities in the river water from adhering to the surface of the liquid extraction pipe 2 and causing erosion and damage thereto, thereby improving the protection effect of the liquid extraction pipe 2, and also preventing the input end of the liquid extraction groove 22 from being blocked by floating objects in the river, thereby improving the water extraction sampling efficiency. The air pressure in the linkage groove 41 increases as the airflow is continuously filled into the linkage groove 41, so that the airflow which has lost its momentum is pushed into the aeration groove 46 along the exhaust hole 412, and finally filled into the river water body from the bottom end of the aeration groove 46, so as to aerate the river water body, increase the internal oxygen content, and improve the self-purification ability of the water body; and when the reciprocating screw 4 rotates, the transmission action of the second pulley group 231 will also make the liquid extraction pipe 2 rotate, and the dual action of rotation and up and down sliding wiping can be used to realize effective and comprehensive cleaning of the surface of the liquid extraction pipe 2, and the liquid extraction pipe 2 can be rotated to extract liquid, thereby increasing the sampling range of liquid extraction and improving the water quality monitoring effect; then the second magnetic plate 341 and the first magnetic plate 421 are separated from the repulsive area, and under the rebound action of the first spring 422, suction will be generated in the air pressure groove 42, so that fresh airflow from the outside is replenished into the air pressure groove 42, thereby ensuring the continuous supply of airflow.

[0047] During the upward sliding of the cleaning wiping ring 45, the trigger rod 451 will come into contact with the bottom end of the detection rod 3 and push the detection rod 3 to move upward, so that the detection rod 3 with the monitoring sensor 32 is inserted into the cleaning groove 53, so that the outer wall of the monitoring sensor 32 is cleaned with the cleaning cotton 531 to remove impurities in the water attached to its side wall. Subsequently, when the cleaning wiping ring 45 moves downward, the trigger rod 451 will move downward and reset under the rebound action of the second spring 52, so that the monitoring sensor 32 moves into the monitoring groove 31 again, so that the outer wall of the monitoring sensor 32 can be cleaned intermittently and repeatedly while the monitoring is being realized, thereby ensuring the cleanliness of the surface of the monitoring sensor 32 and improving the monitoring effect.

[0048] 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 water quality monitoring device for a low-water-level river, comprising a monitoring box (1), characterized in that: The bottom of the monitoring box (1) is rotatably connected to a liquid extraction pipe (2), a liquid extraction chamber (21) is provided in the monitoring box (1), the liquid extraction pipe (2) penetrates the monitoring box (1) upwards and extends into the liquid extraction chamber (21), the liquid extraction chamber (21) is provided with three groups, three groups of liquid extraction grooves (22) are respectively provided in the liquid extraction pipe (2), the output ends of the liquid extraction grooves (22) are respectively connected to the inner cavities of the three groups of liquid extraction chambers (21), and the input ends of the liquid extraction grooves (22) are located at different heights of the liquid extraction pipe (2), and further comprising: A monitoring component, the monitoring component is arranged in a monitoring box (1) and is used to extract water samples at different depths in a river channel for monitoring, the monitoring component comprises a detection rod (3), the side wall of each group of the liquid extraction chambers (21) is provided with a monitoring groove (31), the detection rod (3) vertically penetrates the plurality of monitoring grooves (31) and extends to the outside of the monitoring box (1), a monitoring sensor (32) is fixedly connected to the outer wall of the detection rod (3) located in each group of the monitoring grooves (31), a driving groove (33) is provided in the monitoring box (1), a liquid extraction blade (34) is rotatably connected in the driving groove (33), a driving motor (35) is fixedly connected to the top of the monitoring box (1), and an output shaft of the driving motor (35) is transmission-connected to the rotating shaft of the liquid extraction blade (34) via a first pulley group (351); A cleaning assembly, the cleaning assembly being arranged on a monitoring box (1) and being used for cleaning a liquid extraction pipe (2) and aerating a river channel during monitoring, the cleaning assembly comprising a reciprocating screw (4), the reciprocating screw (4) being rotatably connected to the bottom of the monitoring box (1), a linkage groove (41) being provided in the monitoring box (1), the reciprocating screw (4) penetrating upwardly through the linkage groove (41), and a driven impeller (411) being fixedly connected to the outer wall of the reciprocating screw (4) located in the linkage groove (41), an air pressure groove (42) being provided in the monitoring box (1), two groups of the air pressure grooves (42) being symmetrically arranged along the center of the driving groove (33), a first magnetic plate (421) being slidably connected in the air pressure groove (42), and a second magnetic plate (421) being fixedly connected to the blade end of the liquid extraction blade (34) A magnetic plate (341) is provided, and the second magnetic plate (341) and the first magnetic plate (421) are magnetically repelled from each other. A first spring (422) is fixedly connected between the side wall of the first magnetic plate (421) and the air pressure groove (42). An air guide groove (43) is provided between the side wall of the air pressure groove (42) and the linkage groove (41). The air guide grooves (43) located on both sides of the linkage groove (41) face opposite directions and are staggered. A sliding block (44) is threadedly sleeved on the reciprocating screw rod (4). A cleaning wiping ring (45) is fixedly connected to the side wall of the sliding block (44). The cleaning wiping ring (45) is slidably sleeved on the liquid extraction pipe (2). The top of the air pressure groove (42) is fixed and connected to an air supply pipe (423), and both the air supply pipe (423) and the air guide groove (43) are provided with a one-way valve.

2. A water quality monitoring device for a low water level river according to claim 1, characterized in that: The bottom of the monitoring box (1) is fixedly connected to a water outlet pipe (36), the side wall of the driving groove (33) is fixedly connected to a drainage pipe (361), and the other end of the drainage pipe (361) is connected to the inner cavity of the water outlet pipe (36), and the two ends of the water outlet pipe (36) are respectively located on two sides of the monitoring box (1) and facing opposite directions.

3. A water quality monitoring device for a low water level river according to claim 1, characterized in that: An aeration groove (46) is provided inside the reciprocating screw rod (4), and a one-way valve is provided inside the aeration groove (46); an exhaust hole (412) is provided on the side wall of the rotating shaft of the driven impeller (411), and the exhaust hole (412) is communicated with the inner cavity of the aeration groove (46).

4. The water quality monitoring device for a low water level river according to claim 1, characterized in that: The monitoring box (1) is provided with a telescopic slot (5) inside, the detection rod (3) passes through the center of the telescopic slot (5), and a limit plate (51) is fixedly connected to the outer wall of the detection rod (3) located in the telescopic slot (5), a second spring (52) is sleeved on the outer wall of the detection rod (3), and two ends of the second spring (52) are respectively fixedly connected to the top of the limit plate (51) and the top of the telescopic slot (5), each group of the monitoring slots (31) is provided with a cleaning slot (53) at the top, a cleaning cotton (531) is fixedly connected in the cleaning slot (53), and the inner diameter shape of the cleaning cotton (531) matches the outer diameter shape of the monitoring sensor (32), and a trigger rod (451) is fixedly connected to the side wall of the cleaning wipe ring (45), and the top of the trigger rod (451) is in movable contact with the bottom end of the detection rod (3).

5. The water quality monitoring device for a low water level river according to claim 1, characterized in that: A transmission groove (23) is provided on the surface of the monitoring box (1), the top ends of the reciprocating screw rod (4) and the liquid extraction tube (2) both extend through the transmission groove (23), and the reciprocating screw rod (4) and the liquid extraction tube (2) are transmission-connected via a second pulley set (231).

6. The water quality monitoring device for a low water level river according to claim 1, characterized in that: The side wall of the monitoring box (1) is fixedly connected to a buoyancy ring (6), and a plurality of groups of weighted balls (61) are fixed at equal intervals on the bottom of the buoyancy ring (6).

7. The water quality monitoring device for a low water level river according to claim 1, characterized in that: A photovoltaic power generation module (7) is fixedly connected to the top of the monitoring box (1), and the photovoltaic power generation module (7) is electrically connected to the drive motor (35).

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