A drainage network liquid level monitoring device

Abstract

This invention discloses a drainage network liquid level monitoring device, relating to the field of urban drainage network liquid level monitoring technology. It includes: a mounting block; a liquid level monitor connected to the bottom of the mounting block; a shielding protection component and a drainage component connected to the bottom of the mounting block; the shielding protection component can cover and enclose the liquid level monitor. Through the shielding protection component, a swing mechanism can drive multiple cover plates to swing towards each other until they close together to cover and enclose the liquid level monitor. Then, the drainage component discharges the sewage located inside the multiple cover plates. This prevents the liquid level monitor from contacting sewage during non-detection periods, reducing the rate of corrosion damage to the monitor's casing and preventing damage to the casing under prolonged corrosion. It also ensures that the internal components of the liquid level monitor are not damaged by sewage immersion, improving the durability and reliability of the liquid level detection device.

Description

Technical Field

[0001] This invention relates to the field of urban drainage network liquid level monitoring technology, specifically to a drainage network liquid level monitoring device. Background Technology

[0002] The main function of a drainage network level monitor is to monitor changes in the liquid level in drainage pipes or collection tanks in real time, ensuring the normal operation and safety of the drainage system. By using pressure sensors, float sensors, or radar technology, the level monitor can quickly respond to changes in liquid level and provide accurate level data. This data is crucial for preventing overflows, detecting pipe leaks, and assessing the influent flow to wastewater treatment plants.

[0003] Based on different monitoring principles, liquid level monitors are divided into immersion type and non-immersion type. In urban drainage pipe networks, sewage overflow is very likely to occur at some nodes and special locations of pipes. These locations are also known as low-lying areas prone to overflow. Therefore, immersion type pressure sensor liquid level monitors are required at low-lying areas prone to overflow to ensure that the liquid level height of overflowing sewage can still be accurately monitored when sewage overflows, thereby improving the reliability and accuracy of liquid level monitoring.

[0004] However, since these are submersible level monitors, they are often in direct contact with sewage for extended periods, making them susceptible to corrosion and damage. As a result, the housings of these level monitors need to be inspected and replaced regularly, leading to higher maintenance costs. Furthermore, if the housing corrodes and perforates during use, internal components may be damaged by sewage immersion, reducing the economic efficiency and convenience of the level monitor. Therefore, there is an urgent need for a drainage network level monitoring device. Summary of the Invention

[0005] The purpose of this invention is to provide a drainage network liquid level monitoring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drainage network liquid level monitoring device, comprising: a mounting block; a liquid level monitor is connected to the bottom of the mounting block, a shielding protection component and a drainage component are connected to the bottom of the mounting block, the shielding protection component can cover and enclose the liquid level monitor, and a wiping component is also connected to the bottom of the mounting block; The shielding protection assembly includes a swing mechanism connected to the bottom of the mounting block. Multiple cover plates are connected in a ring at equal angles on the swing mechanism. The swing mechanism drives the multiple cover plates to swing towards each other to close or to swing away from each other to separate. The drainage assembly is used to discharge the sewage that is enclosed inside the multiple cover plates after they are closed. The wiping assembly is used to wipe and clean the sewage stains adhering to the outer surface of the liquid level monitor.

[0007] Preferably, the swing mechanism includes swing blocks that are rotatably connected to the bottom of the mounting block at equal angles via multiple rotating seats, a first rotating rod, and a first torsion spring. The bottom ends of each swing block are fixedly connected to round rods, and the bottom ends of the round rods are respectively fixedly connected to the tops of multiple cover plates. The swing mechanism also includes multiple first motors that are fixedly connected to the inside of the mounting block at equal angles in a ring. The output ends of each of the multiple first motors are fixedly connected to a first rotating shaft. The bottom ends of the multiple first rotating shafts are fixedly fitted with multiple cams at equal angles in a ring. The outer edges of the multiple cams respectively abut against the outer peripheral surfaces of the multiple swing blocks. The advantage of this arrangement is that starting the multiple first motors drives the multiple cams to rotate, and the cams push the multiple swing blocks to swing in directions closer or further apart. In this way, the multiple swing blocks, through the multiple round rods, stably drive the multiple cover plates to swing in directions closer together to complete the closing or swing in directions further apart to separate, thereby enabling the liquid level monitor to be covered or exposed to sewage for detecting the sewage level at the drainage network.

[0008] Preferably, the drainage assembly includes multiple one-way valves that are connected in a ring at equal angles to the bottom of multiple cover plates. The drainage assembly also includes a lifting mechanism connected to the bottom of the mounting block. A push ring is connected to the lifting mechanism, and the outer circumferential surface of the push ring fits against the inner sidewall of the multiple cover plates after they are closed. The advantage of this arrangement is that after the multiple cover plates are closed and cover the liquid level monitor, the lifting mechanism is activated to push the push ring downward to discharge the sewage located between the inner sidewall of the multiple cover plates and the liquid level monitor through the multiple one-way valves. This can prevent the liquid level monitor from being rapidly corroded and damaged by long-term contact with sewage, thereby effectively protecting the safety of the internal components of the liquid level monitor and improving the durability and reliability of the liquid level detection device.

[0009] Preferably, the drainage assembly further includes multiple mounting holes annularly formed at equal angles on the top of the push ring. The bottom ends of the mounting holes penetrate the bottom surface of the push ring. Multiple horizontal bars are fixedly connected annularly at equal angles between the inner walls of the multiple mounting holes. A vertical bar is fixedly connected to the bottom of each of the multiple horizontal bars. An inverted bowl-shaped one-way pad is fixedly connected to the bottom end of each of the multiple vertical bars. The outer circumferential surface of the bottom end of the one-way pad can tightly abut against the inner wall of the mounting hole. The advantage of this arrangement is that when the push ring moves downward to discharge sewage from inside the cover plate, the outer circumferential surface of the bottom end of the one-way pad tightly abuts against the inner wall of the mounting hole. On the side wall, this design prevents sewage from the lower side of the push ring from passing through the mounting hole and entering the upper side of the push ring, ensuring smooth sewage discharge. Simultaneously, when the push ring moves upward to reset after drainage, due to the lack of pressure at the bottom of the one-way pad, a gap remains between the outer circumference of the bottom end of the one-way pad and the inner side wall of the mounting hole. This allows sewage overflowing to the upper side of the push ring to smoothly pass through the mounting hole to the lower side of the push ring, preventing sewage from stagnating on the upper side of the push ring and prolonged contact with the outer surface of the level monitor. This further prevents sewage from corroding and damaging the level monitor's casing, improving the reliability and stability of the detection device.

[0010] Preferably, the wiping assembly includes a movable ring connected to the lifting mechanism. An annular wiping layer is detachably and fixedly connected to the inner wall of the movable ring. The wiping layer is made of a water-absorbing material. The inner ring of the wiping layer is tightly pressed against the outer wall of the liquid level monitor. Two pairs of straight rods are symmetrically and fixedly connected between the bottom of the movable ring and the top of the push ring. The advantage of this arrangement is that by moving the movable ring and the wiping layer up and down through the lifting mechanism, the sewage stains remaining on the outer surface of the liquid level monitor housing after drainage can be wiped clean, minimizing the corrosion damage of sewage to the liquid level monitor housing and improving the reliability and stability of the detection device.

[0011] Preferably, a first fixing rod is fixedly connected to the bottom of the mounting block, and a connecting block is fixedly connected to the bottom end of the first fixing rod. An installation cavity is formed on the outer circumferential surface of the connecting block, and a receiving cavity is formed at the bottom of the connecting block. A second fixing rod is fixedly connected inside the receiving cavity. The top end of the liquid level monitor is threaded into the bottom end of the second fixing rod. A cable is fixedly inserted into the top of the mounting block, and the bottom end of the cable passes through the mounting block, the first fixing rod, the connecting block, and the second fixing rod and connects to the internal components of the liquid level monitor. Multiple sealing gaskets are fixedly connected to the top of the multiple cover plates at equal angles in a ring. When the multiple cover plates are closed, the top of the sealing gaskets presses tightly against the top wall of the mounting cavity. The advantage of this arrangement is that by the tight contact between the top wall of the mounting cavity and the top of the multiple sealing gaskets, sewage can be prevented from seeping into the interior of the cover plates through the gap between the inner side wall of the cover plate and the outer side of the connecting block and causing corrosion damage to the outer shell of the liquid level monitor, which greatly improves the durability and reliability of the liquid level detection device.

[0012] Preferably, the receiving cavity is connected to a water-squeezing component for squeezing out the sewage inside the wiping layer. The advantage of this configuration is that it can squeeze out the sewage adsorbed by the wiping layer, reduce the water content of the wiping layer, improve the wiping and cleaning effect of the wiping layer on sewage stains during long-term wiping work, and thus effectively avoid residual sewage stains from causing corrosion damage to the housing of the liquid level monitor.

[0013] Preferably, the dewatering assembly includes a fixed box fixedly connected to the top wall of the receiving cavity. A pushing mechanism is connected inside the fixed box. Multiple squeezing plates are connected to the outer circumferential surface of the fixed box in a ring-shaped motion at equal angles. The pushing mechanism can push the multiple squeezing plates to swing towards or away from the inner ring of the wiping layer. The advantage of this arrangement is that by pushing the multiple squeezing plates back and forth towards or away from the inner ring of the wiping layer through the pushing mechanism, the sewage adsorbed in the wiping layer can be effectively and thoroughly squeezed out, ensuring the dryness of the wiping layer and ensuring that the subsequent wiping layer can effectively wipe away the sewage stains remaining on the outer surface of the liquid level monitor housing.

[0014] Preferably, the pushing mechanism includes multiple connecting cavities that are annularly formed at equal angles on the outer circumference of the fixed box. Multiple first rotating arms are rotatably connected between the inner top and bottom walls of the multiple connecting cavities via a second rotating rod and a second torsion spring at equal angles. Multiple extrusion plates are fixedly connected to the sides of the multiple first rotating arms near the fixed box. A second motor is fixedly connected to the inner top wall of the pushing mechanism. A circular plate is fixedly connected to the output end of the second motor. Multiple push blocks are fixedly connected to the outer circumference of the circular plate at equal angles. The sides of the multiple push blocks away from the circular plate are pressed tightly against the sides of the multiple first rotating arms. The advantage of this arrangement is that starting the second motor drives the circular plate to rotate clockwise or counterclockwise, which in turn drives the multiple push blocks to rotate clockwise or counterclockwise. The multiple push blocks, in conjunction with the second rotating rod and the second torsion spring, drive the multiple extrusion plates to swing towards or away from the inner ring of the wiping layer, thereby repeatedly extruding the wiping layer to squeeze out the wastewater adsorbed within it.

[0015] Preferably, the pushing mechanism further includes multiple second rotating arms, which are rotatably connected to the ends of multiple first rotating arms away from the circular plate via a fourth rotating rod and a fourth torsion spring at equal angles. The ends of multiple second rotating arms away from the first rotating arms are respectively fixedly connected to the sides of multiple extrusion plates near the circular plate. The advantage of this arrangement is that, by driving the second rotating arms to rotate via the fourth rotating rod and the fourth torsion spring, when the first rotating arms swing clockwise or counterclockwise, the second rotating arms can drive the extrusion plates to always fully adhere to the inner ring of the wiping layer, thereby improving the thoroughness of squeezing out the sewage in the wiping layer. The drainage network liquid level monitoring equipment also includes: A controller, communicatively connected to the liquid level monitor, the controller comprising: A threshold comparison module is used to compare the liquid level signal with preset upper and lower threshold values; The control command generation module is used to generate control commands; The motor driver is electrically connected to the controller, the lifting mechanism, the first motor, and the second motor, and is used to drive the lifting mechanism, the first motor, and the second motor to operate according to the control command.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a protective covering assembly. A swing mechanism drives multiple cover plates to swing towards each other until they close together, completely covering the level monitor. A drainage assembly then drains the wastewater located inside the cover plates. This prevents the level monitor from contacting wastewater during non-detection periods, reducing the rate of corrosion damage to the monitor's casing and preventing long-term corrosion. This ensures that internal components are not damaged by wastewater immersion, improving the durability and reliability of the level monitoring device. Furthermore, a wiping assembly cleans any remaining wastewater stains from the monitor's casing after drainage, further minimizing corrosion damage and enhancing the device's reliability and stability. The invention also allows for increased automation of drainage network level monitoring equipment based on specific needs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the first cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the second cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the first partial structure of the present invention; Figure 5 This is a schematic diagram of the second partial structure of the present invention; Figure 6 This is a schematic diagram of the water-squeezing assembly in this invention; Figure 7 This is a cross-sectional view of the dewatering assembly in this invention. Figure 8 In this invention Figure 2 Enlarged view of point A in the middle; Figure 9 In this invention Figure 3 Enlarged view of point B in the middle; Figure 10 In this invention Figure 4Enlarged diagram of point C in the middle.

[0018] In the diagram: 1. Mounting block; 11. First fixing rod; 12. Connecting block; 121. Mounting cavity; 122. Receiving cavity; 13. Second fixing rod; 14. Cable; 2. Liquid level monitor; 3. Shielding protection assembly; 31. Swinging mechanism; 311. Swinging block; 312. Round rod; 313. First rotating shaft; 314. Cam; 32. Cover plate; 33. Sealing gasket; 4. Drainage assembly; 41. One-way valve; 42. Lifting mechanism; 43. Push ring; 44. Mounting hole; 45. Horizontal bar; 46. Vertical bar; 47. One-way leather pad; 5. Wiping assembly; 51. Movable ring; 52. Wiping layer; 53. Straight bar; 6. Squeezing assembly; 61. Fixed box; 62. Pushing mechanism; 621. Connecting cavity; 622. First rotating arm; 623. Second rotating arm; 624. Second motor; 625. Circular plate; 626. Push block; 63. Extrusion 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 Figures 1-10 The diagram shows a drainage network liquid level monitoring device, including: a mounting block 1; a liquid level monitor 2 is connected to the bottom of the mounting block 1, a shield protection component 3 and a drainage component 4 are connected to the bottom of the mounting block 1, the shield protection component 3 can cover and enclose the liquid level monitor 2, and a wiping component 5 is also connected to the bottom of the mounting block 1. The shielding protection assembly 3 includes a swing mechanism 31 connected to the bottom of the mounting block 1. Multiple cover plates 32 are connected in a ring at equal angles on the swing mechanism 31. The swing mechanism 31 drives the multiple cover plates 32 to swing towards each other to close or to swing away from each other to separate. The drainage assembly 4 is used to drain the sewage that is enclosed inside the multiple cover plates 32 after they are closed. The wiping component 5 is used to wipe and clean the sewage stains adhering to the outer surface of the liquid level monitor 2.

[0021] See Figure 1 , Figure 2 , Figure 3 and Figure 8The swing mechanism 31 includes a swing block 311 that is rotatably connected to the bottom of the mounting block 1 at an angle by multiple rotating seats, a first rotating rod and a first torsion spring. The bottom ends of the multiple swing blocks 311 are all fixedly connected to round rods 312. The bottom ends of the multiple round rods 312 are respectively fixedly connected to the tops of multiple cover plates 32. The swing mechanism 31 also includes multiple first motors that are fixedly connected to the inside of the mounting block 1 at an angle. The output ends of the multiple first motors are all fixedly connected to first rotating shafts 313. The bottom ends of the multiple first rotating shafts 313 are fixedly sleeved with multiple cams 314 at an angle. The outer edges of the multiple cams 314 abut against the outer peripheral surfaces of the multiple swing blocks 311.

[0022] Specifically, multiple first motors are started to drive multiple cams 314 to rotate. The cams 314 push multiple swing blocks 311 to swing in the direction of approaching or moving away from each other. In this way, the multiple swing blocks 311 stably drive multiple cover plates 32 to swing in the direction of approaching each other to complete the closing or swing in the direction of moving away from each other to separate. This allows the liquid level monitor 2 to be covered or exposed to the sewage to detect the sewage level at the drainage network.

[0023] See Figures 1-5 The drainage assembly 4 includes multiple one-way valves 41 that are connected in a ring at equal angles to the bottom of multiple cover plates 32. The drainage assembly 4 also includes a lifting mechanism 42 connected to the bottom of the mounting block 1. A push ring 43 is connected to the lifting mechanism 42. The outer peripheral surface of the push ring 43 is in contact with the inner sidewall of the multiple cover plates 32 after they are closed.

[0024] Specifically, after the multiple cover plates 32 close together to cover and enclose the liquid level monitor 2, the lifting mechanism 42 is activated to push the push ring 43 downward to discharge the sewage located between the inner walls of the multiple cover plates 32 and the liquid level monitor 2 through multiple one-way valves 41. This can prevent the liquid level monitor 2 from being rapidly corroded and damaged by long-term contact with sewage, thereby effectively protecting the safety of the internal components of the liquid level monitor 2 and improving the durability and reliability of the liquid level detection device.

[0025] See Figure 4 , Figure 5 and Figure 10 The drainage component 4 also includes multiple mounting holes 44 that are opened in a ring at equal angles on the top of the push ring 43. The bottom end of the mounting holes 44 penetrates the bottom surface of the push ring 43. Multiple horizontal bars 45 are fixedly connected in a ring at equal angles between the inner sidewalls of the multiple mounting holes 44. A vertical bar 46 is fixedly connected to the bottom of each of the multiple horizontal bars 45. An inverted bowl-shaped one-way leather pad 47 is fixedly connected to the bottom end of each of the multiple vertical bars 46. The outer peripheral surface of the bottom end of the one-way leather pad 47 can be tightly pressed against the inner sidewall of the mounting hole 44.

[0026] Specifically, when the push ring 43 moves downward to discharge sewage from inside the cover plate 32, the outer peripheral surface of the bottom end of the one-way pad 47 is pressed tightly against the inner wall of the mounting hole 44, thereby preventing sewage on the lower side of the push ring 43 from passing through the mounting hole 44 and entering the upper side of the push ring 43, ensuring smooth sewage discharge. At the same time, when the push ring 43 moves upward to reset after drainage, due to the lack of pressure at the bottom of the one-way pad 47, a gap is left between the outer peripheral surface of the bottom end of the one-way pad 47 and the inner wall of the mounting hole 44. This allows sewage overflowing to the upper side of the push ring 43 to be smoothly discharged through the mounting hole 44 to the lower side of the push ring 43, thereby preventing sewage from stagnating on the upper side of the push ring 43 and coming into long-term contact with the outer surface of the level monitor 2, further preventing sewage from corroding and damaging the housing of the level monitor 2, and improving the reliability and stability of the detection device.

[0027] See Figures 3-5 The wiping assembly 5 includes a movable ring 51 connected to the lifting mechanism 42. A ring-shaped wiping layer 52 is detachably and fixedly connected to the inner wall of the movable ring 51. The wiping layer 52 is made of a water-absorbing material. The inner ring of the wiping layer 52 is pressed tightly against the outer wall of the liquid level monitor 2. Two pairs of straight rods 53 are symmetrically and fixedly connected between the bottom of the movable ring 51 and the top of the push ring 43.

[0028] Specifically, by using the lifting mechanism 42 to move the movable ring 51 and the wiping layer 52 up and down, the sewage stains remaining on the outer surface of the liquid level monitor 2 housing after drainage can be wiped clean, thus minimizing the corrosion damage of sewage to the liquid level monitor 2 housing and improving the reliability and stability of the detection device.

[0029] See Figures 1-3 The bottom of the mounting block 1 is fixedly connected to a first fixing rod 11, and the bottom end of the first fixing rod 11 is fixedly connected to a connecting block 12. The outer circumferential surface of the connecting block 12 is provided with a mounting cavity 121, and the bottom of the connecting block 12 is provided with a receiving cavity 122. The inside of the receiving cavity 122 is fixedly connected to a second fixing rod 13. The top end of the liquid level monitor 2 is threadedly inserted into the bottom end of the second fixing rod 13. A cable 14 is fixedly inserted into the top of the mounting block 1. The bottom end of the cable 14 passes through the mounting block 1, the first fixing rod 11, the connecting block 12, and the second fixing rod 13 and is connected to the internal components of the liquid level monitor 2. The tops of the multiple cover plates 32 are fixedly connected to multiple sealing gaskets 33 at equal angles in a ring. When the multiple cover plates 32 are closed, the tops of the sealing gaskets 33 are pressed tightly against the inner top wall of the mounting cavity 121.

[0030] Specifically, by tightly abutting the top wall of the mounting cavity 121 and the tops of multiple sealing gaskets 33 together, sewage can be prevented from seeping into the interior of the cover plate 32 through the gap between the inner wall of the cover plate 32 and the outer side of the connecting block 12 and causing corrosion damage to the housing of the liquid level monitor 2, which greatly improves the durability and reliability of the liquid level detection device.

[0031] See Figure 6 and Figure 7 The cavity 122 is internally connected to a squeezing assembly 6 for squeezing out the wastewater inside the wiping layer 52.

[0032] Specifically, it can squeeze out the sewage adsorbed by the wiping layer 52, reduce the water content of the wiping layer 52, and improve the wiping and cleaning effect of the wiping layer 52 on sewage stains during long-term wiping work, thereby effectively preventing residual sewage stains from causing corrosion damage to the housing of the level monitor 2.

[0033] See Figure 6 and Figure 7 The dewatering assembly 6 includes a fixed box 61 fixedly connected to the top wall of the receiving cavity 122. A pushing mechanism 62 is connected inside the fixed box 61. Multiple squeezing plates 63 are connected to the outer peripheral surface of the fixed box 61 in a ring-shaped manner at equal angles. The pushing mechanism 62 can push the multiple squeezing plates 63 to swing towards or away from the inner ring of the wiping layer 52.

[0034] Specifically, by pushing the mechanism 62 to reciprocate, multiple extrusion plates 63 are swung towards or away from the inner ring of the wiping layer 52. This can effectively and thoroughly squeeze out the sewage adsorbed in the wiping layer 52, ensuring that the wiping layer 52 is dry and that the subsequent wiping layer 52 can effectively wipe away the sewage stains remaining on the outer surface of the liquid level monitor 2 housing.

[0035] See Figure 6 and Figure 7 The pushing mechanism 62 includes multiple connecting cavities 621 that are opened in a ring at equal angles on the outer peripheral surface of the fixed box 61. Multiple first rotating arms 622 are rotatably connected between the inner top wall and inner bottom wall of the multiple connecting cavities 621 in a ring at equal angles through a second rotating rod and a second torsion spring. Multiple extrusion plates 63 are fixedly connected to the sides of the multiple first rotating arms 622 near the side of the fixed box 61. A second motor 624 is fixedly connected to the inner top wall of the pushing mechanism 62. A circular plate 625 is fixedly connected to the output end of the second motor 624. Multiple push blocks 626 are fixedly connected in a ring at equal angles on the outer peripheral surface of the circular plate 625. The sides of the multiple push blocks 626 away from the circular plate 625 are respectively pressed against the sides of the multiple first rotating arms 622.

[0036] Specifically, the second motor 624 is started to drive the circular plate 625 to rotate clockwise or counterclockwise. The circular plate 625 drives multiple push blocks 626 to rotate clockwise or counterclockwise. The multiple push blocks 626, together with the second rotating rod and the second torsion spring, drive multiple extrusion plates 63 to swing towards or away from the inner ring of the wiping layer 52, thereby extruding the wiping layer 52 multiple times to squeeze out the sewage adsorbed in the wiping layer 52.

[0037] See Figure 6 and Figure 7 The pushing mechanism 62 also includes multiple second rotating arms 623. The multiple second rotating arms 623 are connected to the ends of multiple first rotating arms 622 away from the circular plate 625 by a fourth rotating rod and a fourth torsion spring at an angle. The ends of multiple second rotating arms 623 away from the first rotating arms 622 are respectively fixedly connected to the side of multiple extrusion plates 63 near the circular plate 625.

[0038] Specifically, by driving the second rotating arm 623 to rotate through the fourth rotating rod and the fourth torsion spring, the second rotating arm 623 can drive the extrusion plate 63 to always fully adhere to the inner ring of the wiping layer 52 when the first rotating arm 622 swings back and forth clockwise or counterclockwise, thereby improving the thoroughness of squeezing out the sewage in the wiping layer 52. Drainage pipe network liquid level monitoring equipment also includes: The controller, a PLC controller, is communicatively connected to the level monitor 2. It connects to the level monitor 2, lifting mechanism 42, first motor, and second motor 624 via an RS485 bus. It receives water quality data and outputs control signals. The controller includes: The threshold comparison module is used to compare the liquid level signal with preset upper and lower threshold values. The control command generation module is used to generate control commands; The motor driver is electrically connected to the controller, the lifting mechanism 42, the first motor and the second motor 624, and is used to drive the lifting mechanism 42, the first motor and the second motor 624 to operate according to control commands.

[0039] Working principle: During use, the liquid level monitor 2 will perform sewage level detection at the same time interval. When liquid level detection is required, the first motor is started to drive multiple cams 314 to rotate. The cams 314 push multiple swing blocks 311 to swing in opposite directions. In this way, multiple swing blocks 311 stably drive multiple cover plates 32 to swing in opposite directions through multiple round rods 312 to separate them. This allows the liquid level monitor 2 to be exposed to sewage to detect the sewage level at the drainage pipe network. Then, the detection result is sent to the information receiving end.

[0040] Once the test is complete, the first motor is started, which drives multiple cams 314 to rotate in the opposite direction. The cams 314 push multiple swing blocks 311 to swing in the same direction. In this way, the multiple swing blocks 311 stably drive multiple cover plates 32 to swing in the same direction through multiple round rods 312 to complete the closing, thereby covering the liquid level monitor 2 so that the liquid level monitor 2 is separated from the sewage in the pipeline.

[0041] Furthermore, when multiple cover plates 32 are closed, the top wall of the mounting cavity 121 and the top of multiple sealing gaskets 33 are tightly pressed together, which can prevent sewage from seeping into the interior of the cover plate 32 through the gap between the inner side wall of the cover plate 32 and the outer side of the connecting block 12 and causing corrosion damage to the housing of the liquid level monitor 2, thus greatly improving the durability and reliability of the liquid level detection device.

[0042] Then, the lifting mechanism 42 is activated to push the push ring 43 downward to discharge the sewage located between the inner walls of the multiple cover plates 32 and the liquid level monitor 2 through multiple one-way valves 41. This can prevent the liquid level monitor 2 from being rapidly corroded and damaged by long-term contact with sewage, thereby effectively protecting the safety of the internal components of the liquid level monitor 2 and improving the durability and reliability of the liquid level detection device.

[0043] Furthermore, when the push ring 43 moves downward to discharge sewage from inside the cover plate 32, the outer peripheral surface of the bottom end of the one-way pad 47 presses tightly against the inner wall of the mounting hole 44, thereby preventing sewage on the lower side of the push ring 43 from passing through the mounting hole 44 and entering the upper side of the push ring 43, ensuring smooth sewage discharge. At the same time, when the push ring 43 moves upward to reset after drainage, due to the lack of pressure at the bottom of the one-way pad 47, a gap is left between the outer peripheral surface of the bottom end of the one-way pad 47 and the inner wall of the mounting hole 44. This allows sewage overflowing to the upper side of the push ring 43 to be smoothly discharged through the mounting hole 44 to the lower side of the push ring 43, thereby preventing sewage from stagnating on the upper side of the push ring 43 and coming into long-term contact with the outer surface of the level monitor 2, further preventing sewage from corroding and damaging the housing of the level monitor 2, and improving the reliability and stability of the detection device.

[0044] Subsequently, when the lifting mechanism 42 drives the push ring 43 to move upward and reset, the lifting mechanism 42 will drive the movable ring 51 and the wiping layer 52 to move upward and wipe the sewage stains remaining on the outer surface of the liquid level monitor 2 after drainage, thus minimizing the corrosion damage of sewage to the liquid level monitor 2 housing and improving the reliability and stability of the detection device.

[0045] After the wiping layer 52 moves upward into the receiving cavity 122, the second motor 624 is started to drive the circular plate 625 to rotate clockwise or counterclockwise. The circular plate 625 drives multiple push blocks 626 to rotate clockwise or counterclockwise. The multiple push blocks 626, together with the second rotating rod and the second torsion spring, drive multiple extrusion plates 63 to swing in the direction of moving closer to or away from the inner circle of the wiping layer 52, so that the wiping layer 52 can be extruded multiple times to squeeze out the sewage adsorbed in the wiping layer 52.

[0046] Furthermore, by driving the second rotating arm 623 to rotate through the fourth rotating rod and the fourth torsion spring, the second rotating arm 623 can drive the extrusion plate 63 to always fully adhere to the inner ring of the wiping layer 52 when the first rotating arm 622 swings back and forth clockwise or counterclockwise, thereby improving the thoroughness of squeezing out the sewage in the wiping layer 52.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] 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 drainage network liquid level monitoring device, comprising: Mounting block (1); characterized in that a liquid level monitor (2) is connected to the bottom of the mounting block (1), a shield protection component (3) and a drainage component (4) are connected to the bottom of the mounting block (1), the shield protection component (3) can cover the liquid level monitor (2), and a wiping component (5) is also connected to the bottom of the mounting block (1). The shielding protection assembly (3) includes a swing mechanism (31) connected to the bottom of the mounting block (1). Multiple cover plates (32) are connected in a ring at equal angles on the swing mechanism (31). The swing mechanism (31) drives the multiple cover plates (32) to swing towards each other to close or swing away from each other to separate. The drainage assembly (4) is used to discharge the sewage that is wrapped inside the multiple cover plates (32) after the multiple cover plates (32) are closed; The wiping component (5) is used to wipe and clean the sewage stains attached to the outer surface of the liquid level monitor (2); The closing of the cover plate (32), the discharge of sewage from the drainage component (4), and the wiping and cleaning of the wiping component (5) are carried out during non-detection periods.

2. The drainage pipe network liquid level monitoring device according to claim 1, characterized in that: The swing mechanism (31) includes a swing block (311) that is rotatably connected to the bottom of the mounting block (1) at an angle by multiple rotating seats, a first rotating rod and a first torsion spring. The bottom ends of the multiple swing blocks (311) are fixedly connected to round rods (312). The bottom ends of the multiple round rods (312) are fixedly connected to the tops of multiple cover plates (32). The swing mechanism (31) also includes multiple first motors that are fixedly connected to the inside of the mounting block (1) at an angle. The output ends of the multiple first motors are fixedly connected to first rotating shafts (313). The bottom ends of the multiple first rotating shafts (313) are fixedly sleeved with multiple cams (314) at an angle. The outer edges of the multiple cams (314) abut against the outer peripheral surfaces of the multiple swing blocks (311).

3. The drainage network liquid level monitoring device according to claim 1, characterized in that: The drainage assembly (4) includes multiple one-way valves (41) that are connected in a ring at equal angles to the bottom of multiple cover plates (32). The drainage assembly (4) also includes a lifting mechanism (42) connected to the bottom of the mounting block (1). A push ring (43) is connected to the lifting mechanism (42). The outer circumferential surface of the push ring (43) is in contact with the inner sidewall of the multiple cover plates (32) after they are closed.

4. The drainage network liquid level monitoring device according to claim 1, characterized in that: The drainage assembly (4) also includes a plurality of mounting holes (44) that are opened in a ring at equal angles on the top of the push ring (43). The bottom end of the mounting holes (44) penetrates the bottom surface of the push ring (43). A plurality of horizontal bars (45) are fixedly connected in a ring at equal angles between the inner sidewalls of the plurality of mounting holes (44). A vertical bar (46) is fixedly connected to the bottom of each of the plurality of horizontal bars (45). An inverted bowl-shaped one-way leather pad (47) is fixedly connected to the bottom end of each of the plurality of vertical bars (46). The outer peripheral surface of the bottom end of the one-way leather pad (47) can be tightly pressed against the inner sidewall of the mounting hole (44).

5. The drainage pipe network liquid level monitoring device according to claim 1, characterized in that: The wiping assembly (5) includes a movable ring (51) connected to the lifting mechanism (42). A ring-shaped wiping layer (52) is detachably fixed to the inner wall of the movable ring (51). The wiping layer (52) is made of a water-absorbing material. The inner ring of the wiping layer (52) is pressed against the outer wall of the liquid level monitor (2). Two pairs of straight rods (53) are symmetrically fixed between the bottom of the movable ring (51) and the top of the push ring (43).

6. The drainage pipe network liquid level monitoring device according to claim 1, characterized in that: The bottom of the mounting block (1) is fixedly connected to a first fixing rod (11), and the bottom end of the first fixing rod (11) is fixedly connected to a connecting block (12). The outer circumferential surface of the connecting block (12) is provided with a mounting cavity (121), and the bottom of the connecting block (12) is provided with a receiving cavity (122). The inside of the receiving cavity (122) is fixedly connected to a second fixing rod (13). The top end of the liquid level monitor (2) is threaded into the bottom end of the second fixing rod (13). The top of the mounting block (1) is fixedly connected to a cable (14). The bottom end of the cable (14) passes through the mounting block (1), the first fixing rod (11), the connecting block (12), and the second fixing rod (13) and is connected to the internal components of the liquid level monitor (2). The tops of the multiple cover plates (32) are fixedly connected to multiple sealing gaskets (33) at equal angles in a ring. When the multiple cover plates (32) are closed, the top of the sealing gaskets (33) presses tightly against the top wall inside the mounting cavity (121).

7. A drainage pipe network liquid level monitoring device according to claim 6, characterized in that: The cavity (122) is internally connected to a water-squeezing assembly (6) for squeezing out the sewage inside the wiping layer (52).

8. A drainage pipe network liquid level monitoring device according to claim 7, characterized in that: The water-squeezing assembly (6) includes a fixed box (61) fixedly connected to the top wall of the receiving cavity (122). A pushing mechanism (62) is connected inside the fixed box (61). Multiple squeezing plates (63) are connected to the outer peripheral surface of the fixed box (61) in a ring-shaped swing at equal angles. The pushing mechanism (62) can push the multiple squeezing plates (63) to swing towards or away from the inner ring of the wiping layer (52).

9. A drainage pipe network liquid level monitoring device according to claim 8, characterized in that: The pushing mechanism (62) includes multiple connecting cavities (621) that are opened in a ring at equal angles on the outer peripheral surface of the fixed box (61). Multiple first rotating arms (622) are rotatably connected between the inner top wall and inner bottom wall of the multiple connecting cavities (621) through a second rotating rod and a second torsion spring at equal angles. Multiple extrusion plates (63) are fixedly connected to the sides of the multiple first rotating arms (622) near the fixed box (61). A second motor (624) is fixedly connected to the inner top wall of the pushing mechanism (62). A circular plate (625) is fixedly connected to the output end of the second motor (624). Multiple push blocks (626) are fixedly connected in a ring at equal angles on the outer peripheral surface of the circular plate (625). The sides of the multiple push blocks (626) away from the circular plate (625) are respectively pressed against the sides of the multiple first rotating arms (622). The pushing mechanism (62) also includes a plurality of second rotating arms (623). The plurality of second rotating arms (623) are connected to the ends of the plurality of first rotating arms (622) away from the circular plate (625) by a fourth rotating rod and a fourth torsion spring at an angle. The ends of the plurality of second rotating arms (623) away from the first rotating arms (622) are respectively fixedly connected to the side of the plurality of extrusion plates (63) near the circular plate (625).

10. A drainage pipe network liquid level monitoring device according to claim 8, characterized in that, Also includes: A controller, communicatively connected to the liquid level monitor (2), the controller comprising: The threshold comparison module is used to compare the liquid level signal with preset upper and lower threshold values. The control command generation module is used to generate control commands; The motor driver is electrically connected to the controller, the lifting mechanism (42), the first motor and the second motor (624), and is used to drive the lifting mechanism (42), the first motor and the second motor (624) to operate according to the control command.

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