Sewage detection device for environmental protection

Abstract

The invention belongs to the technical field of sewage detection equipment, and particularly relates to a sewage detection device for environmental protection, the sewage detection device comprises a sewage detection assembly and a multi-parameter detection probe, the outer wall of the sewage detection assembly is fixedly connected with a hollow pillar, and the bottom end of the hollow pillar is fixedly connected with a chassis. The sewage detection device not only has the function of automatically adjusting the detection position and can avoid interference of river and lake water level changes on the detection accuracy of the sewage detection device, but also has the function of extracting and detecting a water sample, so that the water sample can be stably detected, and meanwhile, the sewage detection device has the functions of cleaning a multi-parameter detection probe and a separation cylinder and is convenient to use. Impurities and microorganisms are prevented from being attached to the surface of the multi-parameter detection probe, the accuracy of a sewage detection result is further improved, the use reliability and convenience of the sewage detection device are improved, meanwhile, wrong information is prevented from being provided for river and lake environment protection, and the effect of river and lake environment protection is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage detection equipment, and in particular relates to a sewage detection device for environmental protection. Background Art

[0002] At present, in order to protect the environment of rivers and lakes, it is necessary to monitor the water quality of rivers and lakes in real time and accurately. Therefore, online sewage detection devices are installed at rivers and lakes. The sewage detection devices can timely discover pollution problems such as sewage discharge. The working principle of the sewage detection device is to extend a multi-parameter detection probe into the water body of rivers and lakes, and use physical or chemical methods to convert the characteristics of pollutants into electrical signals or optical signals, and analyze and detect pollutant indicators such as chemical oxygen demand, ammonia nitrogen, pH, turbidity, total phosphorus, etc. in the water body. After analysis and processing by the data processing system, the test results are transmitted wirelessly to the monitoring platform in real time, and managers can timely grasp the changes in water quality and make decisions based on this. For example, the patent with authorization announcement number CN218974340U discloses a sewage detection device for river ecological environment supervision.

[0003] In the process of using the existing sewage detection device for river and lake environmental protection, in order to obtain representative water samples and avoid interference from surface water and bottom sediments, the multi-parameter detection probe is set at a position about 0.4-0.7 meters below the water surface. However, as the water level drops, the detection position of the multi-parameter detection probe is easily out of this detection range, so that the accuracy of sewage detection is affected by surface water, affecting the accuracy of sewage detection results, and even the multi-parameter detection probe will be exposed to the water surface and unable to work, affecting the reliability of the use of the sewage detection device; In addition, as the multi-parameter detection probe is placed in the water for a long time, impurities and microorganisms in the river and lake water are easy to adhere to the surface of the multi-parameter detection probe and form a detection barrier layer on the surface of the multi-parameter detection probe, which further affects the accuracy of the detection results of the sewage detection device for river and lake environmental protection, and is easy to bring erroneous information to river and lake environmental protection, affecting the effect of river and lake environmental protection; At the same time, due to the attachment of impurities and microorganisms on the surface of the multi-parameter detection probe, the sewage detection device for river and lake environmental protection also requires regular maintenance by staff. The maintenance frequency is too high, which greatly affects the convenience of using the sewage detection device.

[0004] To this end, we propose a sewage detection device for environmental protection to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a sewage detection device for environmental protection in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: a sewage detection device for environmental protection, comprising a sewage detection component and a multi-parameter detection probe, the outer wall of the sewage detection component is fixedly connected with a hollow pillar, the bottom end of the hollow pillar is fixedly connected with a chassis, the top end of the hollow pillar is fixedly sleeved with a hollow cross bar, and the rod wall of the hollow cross bar is fixedly sleeved with a lifting mechanism; The bottom end of the lifting mechanism is fixedly sleeved with a cylinder, and the inner wall of the cylinder is fixedly connected with a sewage detection mechanism; Water filtering mechanisms are fixedly embedded on the outer walls of both sides of the bottom end of the cylinder; The inner wall of the cylinder is fixedly connected with a partition, and the upper surface of the partition is fixedly connected with a PLC controller.

[0007] In the above-mentioned sewage detection device for environmental protection, the lifting mechanism includes an outer cylinder fixedly sleeved with a hollow cross bar, a rectangular square hole is provided at the bottom end of the outer cylinder, and a movable square tube is movably connected to the hole wall of the rectangular square hole, the inner wall of the bottom end of the movable square tube is fixedly connected to the multi-parameter detection probe, a through hole is provided at the outer wall of the bottom end of the outer cylinder, and a first waterproof electric push rod is fixedly connected to the hole wall of the through hole, the movable end of the first waterproof electric push rod is in contact with the outer wall of the movable square tube, the upper surface of the partition is fixedly connected to a micro air pump, and the air inlet of the micro air pump The end is fixedly connected with an air inlet pipe, the top of the air inlet pipe passes through the upper surface of the cylinder and is fixedly connected with the outer wall of the movable square tube, the air outlet end of the micro air pump is fixedly connected with a three-way reversing solenoid valve, the upper surface of the partition is provided with a fixing hole matched with the three-way reversing solenoid valve, the lateral air outlet end of the three-way reversing solenoid valve is fixedly connected with an air outlet pipe, the bottom end of the air outlet pipe passes through the lower surface of the cylinder, the bottom end of the cylinder is fixedly connected with a one-way solenoid valve, the lower surface of the cylinder is fixedly connected with a bellows, and the upper surface of the cylinder is fixedly connected with a water pressure sensor.

[0008] In the above-mentioned sewage detection device for environmental protection, the sewage detection mechanism includes a separation cylinder fixedly connected to the inner wall of the cylinder, the multi-parameter detection probe is located inside the separation cylinder, the bottom end of the separation cylinder is fixedly embedded with a second waterproof electric push rod, the movable end of the second waterproof electric push rod is fixedly connected with a hollow disk, the outer wall of the hollow disk is fixedly sleeved with a sealing ring, the outer wall of the sealing ring is sealingly and movably connected to the inner wall of the separation cylinder, a plurality of nozzles are fixedly embedded at the top of the hollow disk, an air intake check valve is fixedly embedded at the bottom end of the hollow disk, the air intake end of the air intake check valve is fixedly connected to a delivery pipe, and the air intake end of the delivery pipe It is fixedly connected to the bottom air outlet end of the three-way reversing solenoid valve, the bottom inner wall of the cylinder is fixedly connected to a micro water pump, the water outlet end of the micro water pump is fixedly connected to a water pipe, the top of the water pipe is fixedly connected to a water spray one-way valve, the water outlet end of the water spray one-way valve is fixedly connected to the bottom end of the hollow disk, the top outer wall of the separating cylinder is fixedly connected to two transverse tubes, the side ends of the two transverse tubes pass through the outer wall of the cylinder, the inner wall of one of the transverse tubes is fixedly connected to a water inlet solenoid valve, the water inlet end of the transverse tube is provided with a filter screen cover, the outer wall of the filter screen cover is fixedly connected to the outer wall of the cylinder, and the inner wall of the other transverse tube is fixedly connected to a discharge one-way valve.

[0009] In the above-mentioned sewage detection device for environmental protection, the water filtering mechanism includes a connecting ring fixedly connected to the outer wall of the bottom end of the cylinder, the outer wall of the connecting ring is fixedly connected to a ceramic filter cartridge, the outer wall of the ceramic filter cartridge is fixedly sleeved with a fine-mesh plastic filter sleeve, and the side wall of the fine-mesh plastic filter sleeve is fixedly connected to the outer wall of the cylinder.

[0010] In the above-mentioned sewage detection device for environmental protection, a first circular hole is opened on the outer wall of the bottom end of the movable square tube, a second circular hole is opened on the upper surface of the cylinder, a protective cover is fixedly sleeved on the outer wall of the bottom end of the movable square tube, and the bottom end of the protective cover is fixedly connected to the upper surface of the cylinder.

[0011] In the above-mentioned sewage detection device for environmental protection, a limiting ring is fixedly sleeved on the outer wall of the top end of the movable square tube, and the outer wall of the limiting ring is movably connected to the inner wall of the outer tube.

[0012] In the above-mentioned sewage detection device for environmental protection, a spacer ring is fixedly connected to the inner wall of the top end of the separation cylinder, and two pipe penetration holes are provided at the bottom end of the separation cylinder.

[0013] In the above-mentioned sewage detection device for environmental protection, a through hole is formed on the top outer wall of the hollow pillar, and a dustproof mesh plate is fixedly connected to the hole wall of the through hole, a U-shaped cover for protecting the sewage detection component is fixedly connected to the outer wall of the hollow pillar, a through hole matching the transmitting end of the sewage detection component is formed on the top of the U-shaped cover, and a plurality of reinforcing plates are fixedly connected to the top outer wall of the hollow pillar and the outer wall of the hollow cross bar.

[0014] Compared with the existing technology, the advantages of a sewage detection device for environmental protection are: 1. Through the hollow cross bar and lifting mechanism, when real-time sewage detection is required for river and lake environmental protection, the cylinder is first arranged in the river and lake water through the chassis, hollow pillars, hollow cross bar and lifting mechanism. The chassis can be fixed on the shore of the deep water area of ​​the river and lake or on the bottom of the river and lake center to ensure that the position of the multi-parameter detection probe is not affected by the shore slope, and the multi-parameter detection probe can be always arranged 0.4-0.7 meters below the water surface through the lifting mechanism, thereby avoiding interference from the surface water layer and bottom sediment of the river and lake. The mechanism enables the sewage detection device for river and lake environmental protection to have the function of automatic adjustment of the detection position, which can avoid the interference of river and lake water level changes on the detection accuracy of the sewage detection device, and avoid the detection structure of the sewage detection device from being separated from the river and lake water surface, thereby improving the protection capability of the sewage detection device and improving the reliability of the use of the sewage detection device.

[0015] 2. Through the sewage detection mechanism, cylinder and PLC controller, when the sewage detection device conducts sewage detection on rivers and lakes, the PLC controller controls the sewage detection mechanism to work once every 10 minutes, and the multi-parameter detection probe cooperates with the sewage detection mechanism to obtain corresponding detection data. After that, the multi-parameter detection probe cooperates with the sewage detection component to wirelessly transmit the detection data to the monitoring platform. Management personnel can timely grasp the changes in water quality and make decisions based on this. The water inlet solenoid valve is powered on for 2 minutes and then controlled by the PLC controller to cut off the power and close, isolating the disturbance of water samples in the separation cylinder caused by the water flow of rivers and lakes, and ensuring that the multi-parameter detection probe has sufficient time to detect the water samples in the separation cylinder, thereby ensuring the accuracy of the detection results. This mechanism enables the sewage detection device to have the function of water sample extraction and detection, which can avoid the interference of water samples by river and lake water flow, so that the water samples can be stably detected by the multi-parameter detection probe, thereby improving the accuracy of the detection results of the sewage detection device, thereby improving the reliability of the use of the sewage detection device.

[0016] 3. Through the sewage detection mechanism and water filtration mechanism, when the sewage detection mechanism has finished working for 10 minutes, the PLC controller controls the micro water pump to work for 5 minutes. The micro water pump sucks clean water from the bottom of the cylinder to clean the separation cylinder and the multi-parameter detection probe to avoid the adhesion of impurities and microorganisms on the surface of the multi-parameter detection probe. The bottom of the cylinder is in a negative pressure state due to the extraction of clean water, and the river and lake water is sucked through the water filtration mechanism to replenish it. After 5 minutes of clean water cleaning, the PLC controller controls the micro air pump to start for 5 minutes. The air will carry the clean water remaining in the separation cylinder through the discharge one-way valve Discharge, as the water is discharged, the top of the separation cylinder is in an empty cylinder state, and finally the air can also dry the inner wall of the top of the separation cylinder and the surface of the multi-parameter detection probe, so that there is no residual water in the separation cylinder and the multi-parameter detection probe, avoiding the residual water from contaminating the water sample that enters the separation cylinder again, thereby avoiding the distortion of the water sample. This mechanism enables the sewage detection device to have the function of cleaning the multi-parameter detection probe and the separation cylinder after detection, reduces the maintenance frequency of the device, avoids the distortion of the water sample caused by residual water contaminating the water sample, thereby improving the accuracy of the sewage detection results, as well as improving the reliability and convenience of the sewage detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a sewage detection device for environmental protection provided by the present invention; Figure 2 It is a structural schematic diagram of the first waterproof electric push rod part in a sewage detection device for environmental protection provided by the present invention; Figure 3 It is a structural schematic diagram of a lifting mechanism part of a sewage detection device for environmental protection provided by the present invention; Figure 4 It is a structural schematic diagram of a sewage detection mechanism part of a sewage detection device for environmental protection provided by the present invention; Figure 5 It is a structural schematic diagram of a corrugated drum in a sewage detection device for environmental protection provided by the present invention; Figure 6 It is a structural schematic diagram of a water filtering mechanism in a sewage detection device for environmental protection provided by the present invention; Figure 7 The present invention is a schematic structural diagram of a cross-section of a hollow cross bar in a sewage detection device for environmental protection provided by the present invention.

[0018] In the figure: 1 sewage detection component, 2 multi-parameter detection probe, 3 hollow pillar, 4 chassis, 5 hollow cross bar, 6 lifting mechanism, 61 outer cylinder, 62 movable square tube, 63 first waterproof electric push rod, 64 micro air pump, 65 air inlet pipe, 66 three-way reversing solenoid valve, 67 air outlet pipe, 68 one-way solenoid valve, 69 corrugated cylinder, 610 water pressure sensor, 7 sewage detection mechanism, 71 separation cylinder, 72 second waterproof electric push rod, 73 hollow disk, 74 sealing ring, 75 nozzle, 76 air inlet one-way valve, 77 delivery pipe, 78 micro water pump, 79 water pipe, 710 water spray check valve, 711 horizontal pipe, 712 water inlet solenoid valve, 713 filter screen, 714 discharge check valve, 8 water filtration mechanism, 81 connecting ring, 82 ceramic filter cartridge, 83 fine mesh plastic filter sleeve, 9 partition, 10 cylinder, 11 PLC controller, 12 first circular hole, 13 second circular hole, 14 protective cover, 15 limit ring, 16 partition ring, 17 pipe hole, 18 dustproof screen, 19 U-shaped cover, 20 reinforcement plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1-Figure 7As shown, a sewage detection device for environmental protection includes a sewage detection component 1 and a multi-parameter detection probe 2. The outer wall of the sewage detection component 1 is fixedly connected with a hollow pillar 3, the bottom end of the hollow pillar 3 is fixedly connected with a chassis 4, the top of the hollow pillar 3 is fixedly sleeved with a hollow cross bar 5, the rod wall of the hollow cross bar 5 is fixedly sleeved with a lifting mechanism 6, the lifting mechanism 6 includes an outer cylinder 61 fixedly sleeved with the hollow cross bar 5, the bottom end of the outer cylinder 61 is provided with a rectangular square hole, and the hole wall of the rectangular square hole is movably connected with a movable square hole. The outer wall of the top of the movable square tube 62 is fixedly sleeved with a limiting ring 15, and the outer wall of the limiting ring 15 is movably connected to the inner wall of the outer tube 61. The limiting ring 15 can ensure the stability of the lifting of the movable square tube 62. The inner wall of the bottom end of the movable square tube 62 is fixedly connected to the multi-parameter detection probe 2. A through hole is opened on the outer wall of the bottom end of the outer tube 61, and a first waterproof electric push rod 63 is fixedly connected to the hole wall of the through hole. The moving end of the first waterproof electric push rod 63 contacts the outer wall of the movable square tube 62, and the upper surface of the partition 9 is fixedly connected to the outer wall of the movable square tube 62. A micro air pump 64 is connected, and the air inlet end of the micro air pump 64 is fixedly connected to an air inlet pipe 65. The top end of the air inlet pipe 65 passes through the upper surface of the cylinder 10 and is fixedly connected to the outer wall of the movable square tube 62. The air outlet end of the micro air pump 64 is fixedly connected to a three-way reversing solenoid valve 66. The upper surface of the partition plate 9 is provided with a fixed hole that matches the three-way reversing solenoid valve 66. The lateral air outlet end of the three-way reversing solenoid valve 66 is fixedly connected to an air outlet pipe 67. The bottom end of the air outlet pipe 67 passes through the lower surface of the cylinder 10. The cylinder 10 The bottom end is fixedly connected to a one-way electromagnetic valve 68, the lower surface of the cylinder 10 is fixedly connected to a bellows 69, and the upper surface of the cylinder 10 is fixedly connected to a water pressure sensor 610. This mechanism enables the sewage detection device for river and lake environmental protection to have the function of automatic adjustment of the detection position, which can avoid the interference of river and lake water level changes on the detection accuracy of the sewage detection device and avoid the detection structure of the sewage detection device from being separated from the river and lake water surface, thereby improving the protection capability of the sewage detection device and improving the reliability of the use of the sewage detection device.

[0021] The bottom end of the lifting mechanism 6 is fixedly sleeved with a cylinder 10, and the inner wall of the cylinder 10 is fixedly connected to a sewage detection mechanism 7. The sewage detection mechanism 7 includes a separation cylinder 71 fixedly connected to the inner wall of the cylinder 10. The multi-parameter detection probe 2 is located inside the separation cylinder 71. The bottom end of the separation cylinder 71 is fixedly embedded with a second waterproof electric push rod 72. The moving end of the second waterproof electric push rod 72 is fixedly connected to a hollow disk 73. The outer wall of the hollow disk 73 is fixedly sleeved with a sealing ring 74. The outer wall of the sealing ring 74 is sealed with the inner wall of the separation cylinder 71. The hollow disk 73 is movably connected, a plurality of nozzles 75 are fixedly embedded at the top of the hollow disk 73, an air intake check valve 76 is fixedly embedded at the bottom of the hollow disk 73, an air intake end of the air intake check valve 76 is fixedly connected to a delivery pipe 77, an air intake end of the delivery pipe 77 is fixedly connected to an air outlet end at the bottom of the three-way reversing solenoid valve 66, a micro water pump 78 is fixedly connected to the inner wall of the bottom end of the cylinder 10, a water outlet end of the micro water pump 78 is fixedly connected to a water pipe 79, a water spray check valve 710 is fixedly connected to the top of the water pipe 79, and a water spray check valve 710 is fixedly connected to the outlet end of the water spray check valve 710. The water end is fixedly connected to the bottom end of the hollow disk 73, and the top outer wall of the separation cylinder 71 is fixedly connected to two transverse tubes 711. The side ends of the two transverse tubes 711 pass through the outer wall of the cylinder 10. The inner wall of one of the transverse tubes 711 is fixedly connected with a water inlet solenoid valve 712. The water inlet end of the transverse tube 711 is provided with a filter screen cover 713. The outer wall of the filter screen cover 713 is fixedly connected to the outer wall of the cylinder 10. The inner wall of the other transverse tube 711 is fixedly connected with a discharge check valve 714. This mechanism enables the sewage detection device to not only have the function of water sample extraction and detection, but also avoid the water sample from being disturbed by the river and lake water flow, so that the water sample can be stably detected by the multi-parameter detection probe 2. It also has the function of cleaning the multi-parameter detection probe 2 and the separation cylinder 71 after detection, so as to avoid the residual water contaminating the water sample and causing distortion, and avoid the attachment of impurities and microorganisms to the surface of the multi-parameter detection probe 2, thereby improving the accuracy of the sewage detection results and the reliability of the use of the sewage detection device, while avoiding providing erroneous information to the river and lake environmental protection and improving the effect of river and lake environmental protection.

[0022] The top inner wall of the separation tube 71 is fixedly connected with a separation ring 16, and the bottom end of the separation tube 71 is provided with two through-holes 17, which can facilitate the water pipe 79 and the delivery pipe 77 to enter the separation tube 71, and the top outer wall of the hollow pillar 3 is provided with a through hole, and the hole wall of the through hole is fixedly connected with a dustproof mesh plate 18, which can filter air impurities, and the outer wall of the hollow pillar 3 is fixedly connected with a U-shaped cover 19 for protecting the sewage detection component 1, and the U-shaped cover 19 can improve the protection effect of the sewage detection component 1, and the top of the U-shaped cover 19 is provided with a through hole that matches the transmitting end of the sewage detection component 1, and the top outer wall of the hollow pillar 3 and the outer wall of the hollow cross bar 5 are fixedly connected with multiple reinforcing plates 20, which can ensure the stability of the connection between the hollow cross bar 5 and the hollow pillar 3.

[0023] A water filtering mechanism 8 is fixedly embedded in the outer walls on both sides of the bottom end of the cylinder 10. The water filtering mechanism 8 includes a connecting ring 81 fixedly connected to the outer wall of the bottom end of the cylinder 10. The outer wall of the connecting ring 81 is fixedly connected to a ceramic filter cartridge 82. The outer wall of the ceramic filter cartridge 82 is fixedly sleeved with a fine-mesh plastic filter sleeve 83. The side wall of the fine-mesh plastic filter sleeve 83 is fixedly connected to the outer wall of the cylinder 10. The mechanism can remove impurities and filter river and lake water.

[0024] A partition 9 is fixedly connected to the inner wall of the cylinder 10, a PLC controller 11 is fixedly connected to the upper surface of the partition 9, a first circular hole 12 is opened on the outer wall of the bottom end of the movable square tube 62, a second circular hole 13 is opened on the upper surface of the cylinder 10, a protective cover 14 is fixedly sleeved on the outer wall of the bottom end of the movable square tube 62, the bottom end of the protective cover 14 is fixedly connected to the upper surface of the cylinder 10, and the first circular hole 12 and the second circular hole 13 can facilitate the electrical connection of the powered equipment in the cylinder 10.

[0025] The first waterproof electric push rod 63, the micro air pump 64, the three-way reversing solenoid valve 66, the one-way solenoid valve 68, the second waterproof electric push rod 72, the micro water pump 78 and the water inlet solenoid valve 712 are all electrically connected to the output end of the PLC controller 11 through wires, and the water pressure sensor 610 is electrically connected to the input end of the PLC controller 11 through wires, wherein the data line of the multi-parameter detection probe 2 passes through the movable square tube 62, the outer cylinder 61, the hollow cross bar 5 and the hollow pillar 3 to be electrically connected to the sewage detection component 1, and the above-mentioned power-on equipment and electrical connections are all existing technologies and will not be repeated here.

[0026] The operating principle of the present invention is described as follows: when real-time sewage detection is required for river and lake environmental protection, the cylinder 10 is first arranged in the river and lake water through the chassis 4, the hollow pillar 3, the hollow crossbar 5 and the lifting mechanism 6. The chassis 4 can be fixed on the shore of the deep water area of ​​the river or lake or on the bottom of the river or lake center to ensure that the position of the multi-parameter detection probe 2 is not disturbed by the shore slope, and the lifting mechanism 6 can always arrange the multi-parameter detection probe 2 at a position 0.4-0.7 meters below the water surface, thereby avoiding interference from the surface water layer and bottom sediment of the river or lake; Specifically, after the cylinder 10 enters the river or lake water, the water pressure sensor 610 is subjected to the water pressure of the river or lake water, and the water pressure sensor 610 converts the water pressure into a corresponding electrical signal and transmits it to the PLC controller 11. If the water pressure received by the water pressure sensor 610 does not reach the water pressure threshold range of 0.4-0.7 meters of water depth preset by the PLC controller 11, the first waterproof electric push rod 63 is not energized, and the moving square tube 62 is not blocked from rising and falling, and the cylinder 10 continues to sink by its own weight. Since the top of the cylinder 10 is a hollow structure, and a corrugated tube is also provided at the bottom of the cylinder 10, 69, the hollow cylinder 10 and the corrugated cylinder 69 provide buoyancy to slow down the sinking speed of the cylinder 10, so that the water pressure sensor 610 has sufficient water pressure measurement time. When the water pressure at the sinking position of the water pressure sensor 610 on the top of the cylinder 10 reaches the threshold range preset by the PLC controller 11, the PLC controller 11 receives the electrical signal of the water pressure sensor 610, and then the PLC controller 11 controls the moving end of the first waterproof electric push rod 63 to extend, and the moving end of the first waterproof electric push rod 63 contacts the surface of the moving square tube 62, and squeezes the limiting moving square tube 62; If the water level of the river or lake drops, the water pressure sensor 610 senses the corresponding water pressure change, and the water pressure sensor 610 feeds back the corresponding electrical signal to the PLC controller 11. The PLC controller 11 controls the mobile end of the first waterproof electric push rod 63 to retract, so that the mobile square tube 62 loses its constraint, and the cylinder 10 carries the multi-parameter detection probe 2 to adjust the detection position downward, ensuring that the detection position of the multi-parameter detection probe 2 returns to 0.4-0.7 meters below the water surface. If the water level of the river or lake rises, so that the detection depth of the cylinder 10 and the multi-parameter detection probe 2 exceeds 0.7 meters, the water pressure sensor 610 also sends a corresponding electrical signal to the PLC controller 11. C controller 11, PLC controller 11 controls micro air pump 64 and three-way reversing solenoid valve 66 to be energized, micro air pump 64 draws outside air through air inlet pipe 65, movable square tube 62, outer cylinder 61, hollow cross bar 5 and hollow pillar 3, and delivers air to bellows 69 through energized reversing three-way reversing solenoid valve 66 and air outlet pipe 67, bellows 69 expands due to air, and increases the buoyancy of the bottom of cylinder 10, so that cylinder 10 can move upward, thereby adjusting the position of multi-parameter detection probe 2 in cylinder 10, until cylinder 10 carrying multi-parameter detection probe 2 returns to 0.4-0.7 meters below the water surface, each time After the position is adjusted, the PLC controller 11 controls the moving end of the first waterproof electric push rod 63 to extend and squeeze the moving square tube 62. If there is too much air in the bellows 69, the buoyancy is too large, so that the cylinder 10 floats to the surface of the river or lake. At this time, the water pressure sensor 610 works again, and while the lifting mechanism 6 works, the PLC controller 11 also controls the one-way solenoid valve 68 to open, and then the bellows 69 contracts under the action of water pressure, and then the air in the bellows 69 is discharged into the bottom of the cylinder 10 through the opened one-way solenoid valve 68, and then the air is discharged through the water filter mechanism 8. The discharged airflow can recoil and clean the water filter mechanism 8, thereby improving the water filter mechanism 8. The reliability of use is improved, thereby reducing the buoyancy of the components at the cylinder 10, speeding up the speed of adjusting the position of the cylinder 10, so that the position of the cylinder 10 can be quickly corrected, and as the water pressure increases after the cylinder 10 slowly sinks, the water pressure causes the river and lake water to pass through the water filtration mechanism 8 for purification, and the purified clean water is stored at the bottom of the cylinder 10. This mechanism enables the sewage detection device for river and lake environmental protection to have the function of automatically adjusting the detection position, which can avoid the interference of river and lake water level changes on the detection accuracy of the sewage detection device, and avoid the detection structure of the sewage detection device from being separated from the river and lake water surface, thereby improving the protection capability of the sewage detection device and improving the reliability of the use of the sewage detection device; When the sewage detection device detects sewage in rivers and lakes, the PLC controller 11 controls the sewage detection mechanism 7 to work once every 10 minutes, and the multi-parameter detection probe 2 cooperates with the sewage detection mechanism 7 to obtain corresponding detection data. After that, the multi-parameter detection probe 2 cooperates with the sewage detection component 1 to wirelessly transmit the detection data to the monitoring platform, so that the management personnel can timely grasp the changes in water quality and make decisions based on this; Specifically, the PLC controller 11 controls the moving end of the second waterproof electric push rod 72 to move downward every 10 minutes, and also controls the water inlet solenoid valve 712 to be energized and opened for 2 minutes. The moving end of the second waterproof electric push rod 72 drives the hollow disk 73 and the sealing ring 74 to move downward. After moving downward, the separation cylinder 71 is in a negative pressure state, and in order to balance the pressure, it is necessary to suck river and lake water to supplement. At this time, the energized and opened water inlet solenoid valve 712 sucks water samples 0.4-0.7 meters below the water surface into the separation cylinder 71 through the cross pipe 711, so that the separation cylinder 71 is filled with the test water sample, and the air at the top of the separation cylinder 71 is discharged through the exhaust one-way valve 714, so that the multi-parameter detection probe 2 is in the water sample of the separation cylinder 71, and sewage detection is carried out for 6 minutes. After being energized for 2 minutes, the water inlet solenoid valve 712 is controlled by the PLC controller 11 to cut off the power and close, isolating the river and lake water flow from causing the separation cylinder 71 to be filled with the test water sample. In the case of water sample disturbance, the multi-parameter detection probe 2 is guaranteed to have sufficient time to detect the water sample in the separation cylinder 71, so as to ensure the accuracy of the detection result. Moreover, when the water sample enters the separation cylinder 71 through the horizontal tube 711, the filter screen 713 can filter out large impurities (such as plastic bags, branches, leaves and aquatic plants) floating in the water. After the sewage detection is completed for 6 minutes, the PLC controller 11 controls the moving end of the second waterproof electric push rod 72 to move upward, and the sealing ring 74 and the hollow disk 73 move to the separation ring 16. At the same time, the water sample at the separation cylinder 71 is discharged through the discharge check valve 714. This mechanism enables the sewage detection device to have the function of water sample extraction and detection, and can avoid the water sample from being disturbed by the water flow of rivers and lakes, so that the water sample can be stably detected by the multi-parameter detection probe 2, thereby improving the accuracy of the detection result of the sewage detection device, and thus improving the reliability of the use of the sewage detection device. When the sewage detection mechanism 7 has finished working for 10 minutes, the PLC controller 11 controls the micro water pump 78 to work for another 5 minutes. The water inlet of the micro water pump 78 draws clean water from the bottom of the cylinder 10 along the water pipe 79 and the water spray check valve 710 into the hollow disk 73. Finally, the clean water is sprayed to the separation cylinder 71 through the nozzle 75. The clean water can clean the multi-parameter detection probe 2 located in the separation cylinder 71 to prevent impurities and microorganisms from adhering to the surface of the multi-parameter detection probe 2. The cleaned water is discharged through the discharge check valve 714. The bottom of the cylinder 10 is in a negative pressure state due to the extraction of clean water. When there is no water at the bottom of the cylinder 10, the water filtering mechanism 8 also It can compensate for clean water. The bottom of the negative pressure cylinder 10 will suck river and lake water for replenishment through the water filtration mechanism 8. Large impurities are intercepted when the river and lake water passes through the fine-mesh plastic filter sleeve 83. After the river and lake water passes through the ceramic filter cartridge 82, the ceramic filter material of the ceramic filter cartridge 82 can fully filter out fine impurities and microorganisms in the river and lake water. Finally, the river and lake water that enters the bottom of the cylinder 10 through the connecting ring 81 becomes clean water, thereby preventing the impurities and microorganisms in the river and lake water from contaminating the water sample entering the separation cylinder 71, avoiding the distortion of the water sample entering the separation cylinder 71, and ensuring the accuracy of the detection results of the sewage detection device. After 5 minutes of clean water cleaning, the PLC controller 11 controls the micro air pump 64 to start After running for 5 minutes, the micro air pump 64 draws in the outside air through the air inlet pipe 65, the movable square tube 62, the outer tube 61, the hollow cross bar 5 and the hollow pillar 3. The outside air is filtered through the dustproof mesh plate 18, and then the air enters the hollow disk 73 through the delivery pipe 77 and the air inlet one-way valve 76. The air is then ejected through the nozzle 75. The ejected airflow will carry the clean water remaining in the separation tube 71 and be discharged through the discharge one-way valve 714. As the water is discharged, the top of the separation tube 71 is in an empty tube state. Finally, the air can also dry the inner wall of the top of the separation tube 71 and the surface of the multi-parameter detection probe 2, so that there is no residual water in the separation tube 71 and the multi-parameter detection probe 2, avoiding residual The retained water liquid will pollute the water sample that re-enters the separation cylinder 71, thereby avoiding distortion of the water sample. After ventilation for 5 minutes, the PLC controller 11 controls the sewage detection mechanism 7 to extract water samples again for sewage detection. This mechanism enables the sewage detection device to have the function of cleaning the multi-parameter detection probe 2 and the separation cylinder 71 after detection, thereby reducing the frequency of device maintenance, avoiding residual water liquid from contaminating the water sample and causing distortion, and avoiding impurities and microorganisms adhering to the surface of the multi-parameter detection probe 2, thereby improving the accuracy of sewage detection results, as well as improving the reliability and convenience of the use of the sewage detection device, while avoiding providing erroneous information to river and lake environmental protection, thereby improving the effect of river and lake environmental protection.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage detection device for environmental protection, comprising a sewage detection component (1) and a multi-parameter detection probe (2), characterized in that: The outer wall of the sewage detection component (1) is fixedly connected to a hollow pillar (3), the bottom end of the hollow pillar (3) is fixedly connected to a chassis (4), the top end of the hollow pillar (3) is fixedly sleeved with a hollow cross bar (5), and the rod wall of the hollow cross bar (5) is fixedly sleeved with a lifting mechanism (6); A cylinder (10) is fixedly sleeved on the bottom end of the lifting mechanism (6), a partition (9) is fixedly connected to the inner wall of the cylinder (10), and a PLC controller (11) is fixedly connected to the upper surface of the partition (9); The lifting mechanism (6) comprises an outer cylinder (61) fixedly sleeved with the hollow cross bar (5); a rectangular square hole is formed at the bottom end of the outer cylinder (61); a movable square tube (62) is movably connected to the hole wall of the rectangular square hole; the inner wall of the bottom end of the movable square tube (62) is fixedly connected to the multi-parameter detection probe (2); a micro air pump (64) is fixedly connected to the upper surface of the partition (9); a three-way reversing solenoid valve (66) is fixedly connected to the air outlet end of the micro air pump (64); a one-way solenoid valve (68) is fixedly connected to the bottom end of the cylinder (10); a corrugated cylinder (69) is fixedly connected to the lower surface of the cylinder (10); and a water pressure sensor (610) is fixedly connected to the upper surface of the cylinder (10); A sewage detection mechanism (7) is fixedly connected to the inner wall of the cylinder (10); Water filtering mechanisms (8) are fixedly embedded on the outer walls of both sides of the bottom end of the cylinder (10); The water filtering mechanism (8) comprises a connecting ring (81) fixedly connected to the outer wall of the bottom end of the cylinder (10), and a ceramic filtering cylinder (82) is fixedly connected to the outer wall of the connecting ring (81).

2. A sewage detection device for environmental protection according to claim 1, characterized in that: A through hole is formed on the outer wall of the bottom end of the outer cylinder (61), and a first waterproof electric push rod (63) is fixedly connected to the hole wall of the through hole; the movable end of the first waterproof electric push rod (63) contacts the outer wall of the movable square tube (62); the air inlet end of the micro air pump (64) is fixedly connected to an air inlet pipe (65); the top end of the air inlet pipe (65) passes through the upper surface of the cylinder (10) and is fixedly connected to the outer wall of the movable square tube (62); the upper surface of the partition plate (9) is formed with a fixed hole matched with a three-way reversing solenoid valve (66); the lateral air outlet end of the three-way reversing solenoid valve (66) is fixedly connected to an air outlet pipe (67); the bottom end of the air outlet pipe (67) passes through the lower surface of the cylinder (10).

3. A sewage detection device for environmental protection according to claim 2, characterized in that: The sewage detection mechanism (7) comprises a separation cylinder (71) fixedly connected to the inner wall of the cylinder (10), the multi-parameter detection probe (2) is located inside the separation cylinder (71), a second waterproof electric push rod (72) is fixedly embedded in the bottom end of the separation cylinder (71), a hollow disk (73) is fixedly connected to the movable end of the second waterproof electric push rod (72), a sealing ring (74) is fixedly sleeved on the outer wall of the hollow disk (73), the outer wall of the sealing ring (74) is sealingly and movably connected to the inner wall of the separation cylinder (71), a plurality of nozzles (75) are fixedly embedded in the top end of the hollow disk (73), an air intake check valve (76) is fixedly embedded in the bottom end of the hollow disk (73), the air intake end of the air intake check valve (76) is fixedly connected to a delivery pipe (77), and the air intake end of the delivery pipe (77) is fixedly connected to the bottom air outlet end of the three-way reversing solenoid valve (66). The inner wall of the bottom end of the cylinder (10) is fixedly connected to a micro water pump (78), the water outlet end of the micro water pump (78) is fixedly connected to a water pipe (79), the top end of the water pipe (79) is fixedly connected to a water spray check valve (710), the water outlet end of the water spray check valve (710) is fixedly connected to the bottom end of the hollow disk (73), the top outer wall of the separation cylinder (71) is fixedly connected to two transverse tubes (711), the side ends of the two transverse tubes (711) both pass through the outer wall of the cylinder (10), the inner wall of one of the transverse tubes (711) is fixedly connected to a water inlet solenoid valve (712), the water inlet end of the transverse tube (711) is provided with a filter screen cover (713), the outer wall of the filter screen cover (713) is fixedly connected to the outer wall of the cylinder (10), and the inner wall of the other transverse tube (711) is fixedly connected to a discharge check valve (714).

4. A sewage detection device for environmental protection according to claim 1, characterized in that: A fine-mesh plastic filter sleeve (83) is fixedly sleeved on the outer wall of the ceramic filter cartridge (82), and a side wall of the fine-mesh plastic filter sleeve (83) is fixedly connected to the outer wall of the cylinder (10).

5. A sewage detection device for environmental protection according to claim 2, characterized in that: A first circular hole (12) is formed on the outer wall of the bottom end of the movable square tube (62), a second circular hole (13) is formed on the upper surface of the cylinder (10), a protective cover (14) is fixedly sleeved on the outer wall of the bottom end of the movable square tube (62), and the bottom end of the protective cover (14) is fixedly connected to the upper surface of the cylinder (10).

6. A sewage detection device for environmental protection according to claim 2, characterized in that: A limiting ring (15) is fixedly sleeved on the outer wall of the top end of the movable square tube (62), and the outer wall of the limiting ring (15) is movably connected to the inner wall of the outer cylinder (61).

7. A sewage detection device for environmental protection according to claim 3, characterized in that: A spacer ring (16) is fixedly connected to the inner wall of the top end of the separation cylinder (71), and two pipe penetration holes (17) are provided at the bottom end of the separation cylinder (71).

8. The sewage detection device for environmental protection according to claim 1, characterized in that: The top outer wall of the hollow pillar (3) is provided with a through hole, and a dustproof screen (18) is fixedly connected to the hole wall of the through hole; the outer wall of the hollow pillar (3) is fixedly connected to a U-shaped cover (19) for protecting the sewage detection component (1); the top of the U-shaped cover (19) is provided with a through hole that matches the emission end of the sewage detection component (1); the top outer wall of the hollow pillar (3) and the outer wall of the hollow cross bar (5) are fixedly connected to a plurality of reinforcing plates (20).

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