An on-line monitoring system for sewage outlet for water resource protection

Abstract

The application relates to the technical field of sewage outlet monitoring, in particular to an online sewage outlet monitoring system for water resource protection, which comprises a containing cylinder, rotating blades, a linear driving part and a rotating driving part. A cylindrical inner cavity is formed in the inside of the containing cylinder, the rotating blades are arranged in the inside of the inner cavity and cooperate with the inner surface of the inner cavity to form a plurality of mutually sealed detection cavities, the rotating driving part drives the rotating blades to rotate in the inner cavity to cooperate with the opening arranged on one side of the inner cavity to discharge sewage, the probe end surface of the detection sensor is flush with the inner surface of the inner cavity to detect the sewage in the detection cavities, and the linear driving part drives the containing cylinder to convert between the suspended position above the sewage surface and the water filling position below the sewage surface. The application can guarantee the cleanness of the inner surface of the inner cavity and the probe end surface, and effectively improve the accuracy of the detection result.

Description

Technical Field

[0001] This invention relates to the field of sewage outlet monitoring technology, specifically to an online sewage outlet monitoring system for water resource protection. Background Technology

[0002] A sewage outlet is an opening that discharges wastewater directly or through pipes, ditches, canals, or other sewage channels into the environment. It is an important node in the ecological protection of river basins and sea areas. Based on the industry to which the responsible party of the sewage outlet belongs and the characteristics of the discharge, sewage outlets are classified into four types: industrial sewage outlets, urban sewage treatment plant sewage outlets, agricultural sewage outlets, and other sewage outlets.

[0003] Regardless of the type of sewage outlet mentioned above, an online monitoring system is required to monitor the sewage discharged from the outlet in real time, thereby preventing damage to the ecological environment.

[0004] For example, Chinese invention patent CN110672807B discloses a method and device for tracing the source of sewage discharge outlets into rivers. The device includes a monitoring vessel with a waterproof tank mounted on it. A micro-pump is installed on the outer wall of the tank, with inlet pipes connected to both ends of the micro-pump. One end of each inlet pipe is connected to a winding mechanism, which in turn connects to a suction pipe. Multiple water storage boxes are installed at the bottom of the tank's inner cavity, with the other end of each inlet pipe connected to a storage box. Detectors are installed on the top outer wall of each storage box. A main control chip is installed on the top plate of the tank's inner cavity, and the detectors are connected to the main control chip. A wireless communication unit and a positioning unit are also installed on the top plate of the tank's inner cavity, both connected to the main control chip. The monitoring vessel can travel along the river, controlling the extension and retraction of the suction pipe via the winding mechanism to insert it into the river. The micro-pump draws water from the sewage discharge outlet, and the detectors measure the pollutant concentration. The main control chip, wireless communication unit, and positioning unit collect information on the pollutants and the location of the sewage discharge outlet, facilitating source tracing.

[0005] The technical solution provided by the aforementioned patent mainly involves transporting wastewater to multiple storage tanks for testing via pipeline suction, and then synchronizing the data through a wireless communication unit to achieve online monitoring. However, this solution suffers from poor accuracy in practical use, as detailed below: Because wastewater contains a large number of pollutants, some residues remain as it passes through pipes and storage tanks. For example, pollutants adhere to the inner surfaces of pipes and / or storage tanks, forming scale. Although wastewater is discharged after testing, it cannot completely remove the adhered scale. Moreover, with the increase in the number of tests, more and more scale adheres to the inner surfaces of pipes and storage tanks. Therefore, if some scale falls off and enters the storage tank during one or more tests, it will adversely affect the actual test results. On the other hand, pollutants may also adhere to the surface of the sensors used for testing. All of these factors will reduce the accuracy of subsequent test results.

[0006] Therefore, there is an urgent need for an online detection device for sewage outlets that can maintain detection accuracy. Summary of the Invention

[0007] The purpose of this invention is to provide an online monitoring system for sewage outlets for water resource protection, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an online monitoring system for sewage outlets for water resource protection, comprising a receiving cylinder, rotating blades, a linear drive unit, and a rotary drive unit; The interior of the receiving tube has a cylindrical inner cavity, and the rotating blade is disposed inside the inner cavity, forming multiple mutually sealed detection cavities in conjunction with the inner surface of the inner cavity; The rotary drive unit drives the rotary blades to rotate in the inner cavity to cooperate with the opening on one side of the inner cavity to discharge sewage. The probe end face of the detection sensor is flush with the inner surface of the inner cavity to detect sewage in the detection cavity; The linear drive unit drives the receiving cylinder to switch between a suspended position above the sewage surface and a water-filled position below the sewage surface.

[0009] Preferably, the rotating blade includes an intermediate shaft coaxially arranged with the inner cavity and a plurality of first scrapers fixed on the outer peripheral surface of the intermediate shaft. The upper and lower end faces of the intermediate shaft and the side edges of the first scrapers are slidably and sealingly connected to the inner surface of the inner cavity. The scraping edge of the opening is used to scrape the side of the first scraper.

[0010] Preferably, a second scraper corresponding to the opening is provided between the suspended position and the water level of the receiving cylinder, and the second scraper is fixedly connected to the linear drive unit; The two straight edges of the second scraper are used to scrape the surfaces of two adjacent first scrapers.

[0011] Preferably, an arc-shaped edge is provided between the two straight edges of the second scraper, and the arc-shaped edge is used to scrape the outer surface of the intermediate shaft.

[0012] Preferably, the rotary drive unit includes a drive motor and a telescopic rod; The drive motor is fixedly connected to the linear drive unit; The two ends of the telescopic rod are fixed to the output shaft and intermediate shaft of the drive motor, respectively.

[0013] Preferably, the telescopic rod includes a splined shaft and a bushing sleeve sleeved on the outside of the splined shaft. The bottom end of the splined shaft is coaxially fixed with the intermediate shaft, and the bushing sleeve is fixedly connected to the output shaft of the drive motor through a coupling.

[0014] Preferably, the first scraper includes a first inner plate fixedly connected to the intermediate shaft and a first rubber sleeve sleeved and fixed to the outside of the first inner plate. The first inner plate is slidably and sealed to the inner surface of the inner cavity through the first rubber sleeve.

[0015] Preferably, the second scraper includes a second inner plate and a second rubber sleeve fitted on the second inner plate; A connecting plate is fixed between the linear drive unit and the drive motor, and the second inner plate is fixedly connected to the connecting plate by a connecting bracket.

[0016] Preferably, a protective cover is provided on the outside of the detection sensor, and the protective cover is sealed and fixed to the receiving cylinder.

[0017] Preferably, the receiving cylinder includes a side cylinder and end plates integrally formed at the upper and lower ends of the side cylinder; The receiving cylinder is tilted.

[0018] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes the cooperation between a receiving cylinder and a rotating blade that can rotate within the inner cavity of the receiving cylinder, combined with a linear drive unit that can drive the receiving cylinder to switch between a suspended position and a water-filled position. On one hand, the receiving cylinder can be used to hold sewage for detection by a detection sensor. On the other hand, the rotation of the rotating blade can both hold and discharge sewage, and also scrape sewage off the inner surface of the cavity and the probe end face, preventing contaminants in the sewage from adhering to the inner surface of the cavity and the probe end face, thereby ensuring the cleanliness of the inner surface of the cavity and the probe end face, and ensuring the accuracy of each detection result. At the same time, the scraping edge can scrape and wash the side of the first scraper to remove contaminants adhering to the side of the first scraper, thereby further improving the cleanliness of the inner cavity and making the detection results more accurate. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the installation position of the protective cover of the present invention; Figure 4 This is a schematic diagram of the structure of the receiving tube of the present invention; Figure 5 This is a top view of the structure of the housing tube of the present invention; Figure 6 This is a top cross-sectional view of the housing of the present invention; Figure 7 This is a schematic diagram of the rotating blade of the present invention; Figure 8 This is a top view of the rotating blade and the second scraper of the present invention. Figure 9 This is a top view of the second scraper of the present invention; Figure 10 This is a top view cross-sectional structural diagram of the second scraper of the present invention.

[0020] In the picture: 1. Receiving cylinder; 11. Side cylinder; 12. End plate; 13. Inner cavity; 14. Opening; 141. Scraped edge; 2. Rotating blade; 21. Intermediate shaft; 22. First scraper; 221. First inner plate; 222. First rubber sleeve; 3. Detection sensor; 31. Probe; 32. Protective cover; 4. Linear drive unit; 5. Rotary drive unit; 51. Drive motor; 52. Telescopic rod; 521. Splined shaft; 522. Shaft sleeve; 6. Second scraper; 61. Second inner plate; 62. Second rubber sleeve; 63. Connecting frame; 64. Curved edge; 65. Straight edge; 7. Connecting plate. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-10 The present invention provides a technical solution: An online monitoring system for sewage outlets for water resource protection includes a receiving cylinder 1, a rotating blade 2, a linear drive unit 4, and a rotary drive unit 5.

[0023] like Figure 4 As shown, the receiving cylinder 1 includes a side cylinder 11 and end plates 12 integrally formed at the upper and lower ends of the side cylinder 11. The side cylinder 11 and the end plates 12 can be made of plastic or stainless steel.

[0024] like Figure 4 As shown, the interior of the receiving cylinder 1 has a cylindrical inner cavity 13, that is, the side cylinder 11 and the two end plates 12 together form a cylindrical inner cavity 13, as shown. Figure 6 As shown, the rotating blade 2 is disposed inside the inner cavity 13 and forms multiple mutually sealed detection chambers with the inner surface of the inner cavity 13; the detection chambers are used to hold sewage when needed for sewage detection.

[0025] The rotary drive unit 5 drives the rotating blade 2 to rotate in the inner cavity 13 to cooperate with the opening 14 on one side of the inner cavity 13 for filling and discharging sewage. For example, when the receiving cylinder 1 is inserted into the sewage, the rotary drive unit 5 is activated to drive the rotating blade 2 to rotate in the inner cavity 13, so that the sewage can be filled into the detection chamber through the opening 14. Conversely, when the receiving cylinder 1 is above the sewage level, the sewage inside the detection chamber can be discharged through the opening 14 by rotating the rotating blade 2.

[0026] like Figure 6 As shown, the end face of the probe 31 of the detection sensor 3 is flush with the inner surface of the inner cavity 13 to detect sewage in the detection cavity. In this embodiment, the number of detection sensors 3 is not limited; the specific number and type of sensors can be adjusted according to actual needs. The purpose of the end face of the probe 31 being flush with the inner surface of the inner cavity 13 is to prevent the rotating blade 2 from scratching the probe 31, and also to use the rotating blade 2 to scrape away dirt from the end face of the probe 31. It should be noted that in this embodiment, the end face of the probe 31 refers to the detection surface of the probe 31 used to detect sewage.

[0027] The linear drive unit 4 drives the receiving cylinder 1 to switch between a suspended position above the sewage surface and a water-filled position below the sewage surface.

[0028] The above-described operating procedure is as follows: Under normal conditions, the housing 1 is in a suspended position, and the position of the rotating blade 2 is as follows: Figure 6As shown, the inside of the receiving cylinder 1 is empty. When it is necessary to test the sewage, the linear drive unit 4 is first activated, causing the receiving cylinder 1 to move downwards until it is completely submerged below the surface of the sewage, i.e., the receiving cylinder 1 is at the water-filled level. Then, the rotary drive unit 5 is activated, driving the rotating blade 2 to rotate in the inner cavity 13, so that the sewage can enter the detection chamber through the opening 14. The rotary drive unit 5 drives the rotating blade 2 to rotate 360° or an integer multiple of 360° and then stops rotating, allowing the rotating blade 2 to return to its original position. Figure 6 The system is positioned as shown in the diagram. Then, the linear drive unit 4 readjusts the receiving cylinder 1 to a suspended position. Next, the probe 31 of the detection sensor 3 detects the wastewater inside the detection chamber. After detection, the rotary drive unit 5 drives the rotating blade 2 to rotate 360° or an integer multiple of 360° while the receiving cylinder 1 is in the suspended position, thus draining the wastewater from the detection chamber and restoring the receiving cylinder 1 to an empty state. When the receiving cylinder 1 is in the water-filled position, the rotation of the rotating blade 2 can both collect the wastewater into the detection chamber and scrape the inner surface of the inner cavity 13 and the end face of the probe 31, ensuring their cleanliness. When the receiving cylinder 1 is in the suspended position, the rotation of the rotating blade 2 can both discharge the wastewater through the opening 14 and scrape the inner surface of the inner cavity 13 and the end face of the probe 31 again, ensuring their cleanliness and preventing dirt accumulation from affecting the next detection.

[0029] The advantages of the above technical solution are as follows: by utilizing the cooperation between the receiving cylinder 1 and the rotating blade 2 that can rotate in the inner cavity 13 of the receiving cylinder 1, and then combining it with the linear drive unit 4 that can drive the receiving cylinder 1 to switch between the suspended position and the water-filled position, on the one hand, the receiving cylinder 1 can be used to hold sewage so that the detection sensor 3 can detect the sewage. On the other hand, the rotation of the rotating blade 2 can realize the holding and discharge of sewage, and can also be used to scrape the sewage from the inner surface of the inner cavity 13 and the end face of the probe 31, preventing pollutants in the sewage from adhering to the inner surface of the inner cavity 13 and the end face of the probe 31, thereby ensuring the cleanliness of the inner surface of the inner cavity 13 and the end face of the probe 31, and ensuring the accuracy of each detection result.

[0030] like Figure 6 As shown, the rotating blade 2 includes an intermediate shaft 21 coaxially arranged with the inner cavity 13 and a plurality of first scrapers 22 fixed on the outer circumferential surface of the intermediate shaft 21. The intermediate shaft 21 is rotatably sealed to the receiving cylinder 1 by a mechanical seal. The upper and lower end faces of the intermediate shaft 21 and the side edges of the first scrapers 22 are slidably sealed to the inner surface of the inner cavity 13. Figure 4 As shown, the scraping edge 141 of the opening 14 is used to scrape the side of the first scraper 22.

[0031] In this embodiment, four first scrapers 22 are provided and are evenly fixed on the circumferential surface of the intermediate shaft 21.

[0032] In actual use, as the intermediate shaft 21 and the first scraper 22 rotate, the scraping edge 141 can scrape and wash the side of the first scraper 22 to remove contaminants attached to the side of the first scraper 22, thereby further improving the cleanliness of the inner cavity 13. Specifically, the side of the first scraper 22 refers to the two sides of the first scraper 22 that contact the top and bottom walls of the inner cavity 13, as well as the side that contacts the inner peripheral wall of the inner cavity 13.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, a second scraper 6 corresponding to the opening 14 is provided between the suspended position and the water-filled position of the receiving cylinder 1. The second scraper 6 is fixedly connected to the linear drive unit 4. The two straight edges 65 of the second scraper 6 are used to scrape the surfaces of the two adjacent first scrapers 22. When the linear drive unit 4 drives the receiving cylinder 1 to switch between the suspended position and the water-filled position, the second scraper 6 can scrape off contaminants on the surfaces of the two adjacent first scrapers 22 that are close to the second scraper 6. Thus, the surfaces of the first scrapers 22 can be scraped and cleaned with each test, improving the cleanliness of the inner surface of the test chamber and improving the accuracy of the test results.

[0034] In this embodiment, in order to achieve scraping and cleaning of the surface of each first scraper 22, the rotating drive unit 5 can be used to drive the rotating blade 2 to rotate 90°. Specifically, since there are four first scrapers 22 in this embodiment, different first scrapers 22 can be replaced every 90° rotation of the rotating blade 2, thereby achieving scraping and cleaning of the surface of each first scraper 22.

[0035] like Figure 6 and Figure 8 As shown, an arc-shaped edge 64 is also provided between the two straight edges 65 of the second scraper 6, such as... Figure 8 As shown, the arc-shaped edge 64 is used to scrape the outer surface of the intermediate shaft 21, wherein the diameter of the intermediate shaft 21 is larger than the diameter of the mechanical seal. In this way, the inner surface of each detection chamber can be thoroughly scraped, ensuring that the wastewater from each test is directly taken from the drain outlet without any residue.

[0036] like Figures 1 to 3 As shown, the rotary drive unit 5 includes a drive motor 51 and a telescopic rod 52; in this embodiment, the drive motor 51 can be a stepper motor. The drive motor 51 is fixedly connected to the linear drive unit 4; the two ends of the telescopic rod 52 are respectively fixed to the output shaft and the intermediate shaft 21 of the drive motor 51.

[0037] Furthermore, such as Figure 5 and Figure 6 As shown, the telescopic rod 52 includes a spline shaft 521 and a bushing 522 sleeved on the outside of the spline shaft 521. The spline shaft 521 and the bushing 522 are matched and arranged. The bottom end of the spline shaft 521 is coaxially fixed with the intermediate shaft 21. The bushing 522 is fixedly connected to the output shaft of the drive motor 51 through a coupling.

[0038] By utilizing the cooperation between the splined shaft 521 and the bushing 522, the driving force on the output shaft of the drive motor 51 can be smoothly transmitted to the intermediate shaft 21.

[0039] like Figure 7 As shown, the first scraper 22 includes a first inner plate 221 fixedly connected to the intermediate shaft 21 and a first rubber sleeve 222 sleeved and fixed to the outside of the first inner plate 221. The first inner plate 221 can be made of stainless steel, and the first rubber sleeve 222 can be made of rubber. The first inner plate 221 is slidably and sealed to the inner surface of the inner cavity 13 through the first rubber sleeve 222. That is, the first inner plate 221 presses the first rubber sleeve 222 against the inner surface of the inner cavity 13, thereby realizing the slidable and sealed connection between the two.

[0040] like Figure 10 As shown, the second scraper 6 includes a second inner plate 61 and a second rubber sleeve 62 sleeved on the second inner plate 61; the second inner plate 61 may be made of stainless steel and the second rubber sleeve 62 may be made of rubber.

[0041] like Figures 1 to 3 As shown, a connecting plate 7 is fixed between the linear drive unit 4 and the drive motor 51, and the second inner plate 61 is fixedly connected to the connecting plate 7 by a connecting bracket 63.

[0042] like Figure 3 and Figure 6 As shown, a protective cover 32 is provided on the outside of the detection sensor 3, and the protective cover 32 is sealed and fixed to the receiving cylinder 1. This can effectively protect the detection sensor 3 and prevent it from being damaged by impact.

[0043] In this embodiment, the receiving cylinder 1 is inclined, such as... Figure 1 As shown, in this state, the contaminants scraped off from the side of the first scraper 22 by the scraper edge 141 can fall directly into the sewage instead of falling back into the containment cylinder 1, thereby further improving the accuracy of the detection results.

[0044] The data detected by sensor 3 is transmitted through a wireless communication unit, which is existing technology and will not be described in detail here, thereby achieving the purpose of online monitoring of sewage at the discharge outlet.

[0045] 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. An online monitoring system for sewage outlets for water resource protection, characterized in that, It includes a housing (1), a rotating blade (2), a linear drive unit (4), and a rotary drive unit (5); The interior of the receiving tube (1) has a cylindrical inner cavity (13), and the rotating blade (2) is disposed inside the inner cavity (13) and forms multiple mutually sealed detection cavities with the inner surface of the inner cavity (13); The rotary drive unit (5) drives the rotary blade (2) to rotate in the inner cavity (13) to cooperate with the opening (14) on one side of the inner cavity (13) to load and discharge sewage; The probe (31) end face of the detection sensor (3) is flush with the inner surface of the inner cavity (13) to detect sewage in the detection cavity; The linear drive unit (4) drives the receiving cylinder (1) to switch between a suspended position above the sewage surface and a water-filled position below the sewage surface; The rotating blade (2) includes an intermediate shaft (21) coaxially arranged with the inner cavity (13) and a plurality of first scrapers (22) fixed on the outer peripheral surface of the intermediate shaft (21). The upper and lower end faces of the intermediate shaft (21) and the side edges of the first scrapers (22) are slidably and sealingly connected to the inner surface of the inner cavity (13). The scraping edge (141) of the opening (14) is used to scrape the side of the first scraper (22); The first scraper (22) includes a first inner plate (221) fixed to the intermediate shaft (21) and a first rubber sleeve (222) sleeved and fixed to the outside of the first inner plate (221). The first inner plate (221) is slidably sealed to the inner surface of the inner cavity (13) through the first rubber sleeve (222).

2. The online monitoring system for sewage outlets for water resource protection according to claim 1, characterized in that: A second scraper (6) corresponding to the opening (14) is provided between the suspended position and the water level of the receiving cylinder (1), and the second scraper (6) is fixedly connected to the linear drive unit (4); The two straight edges (65) of the second scraper (6) are used to scrape the surfaces of two adjacent first scrapers (22).

3. The online monitoring system for sewage outlets for water resource protection according to claim 2, characterized in that: An arc-shaped edge (64) is also provided between the two straight edges (65) of the second scraper (6), which is used to scrape the outer surface of the intermediate shaft (21).

4. The online monitoring system for sewage outlets for water resource protection according to claim 3, characterized in that: The rotary drive unit (5) includes a drive motor (51) and a telescopic rod (52). The drive motor (51) is fixedly connected to the linear drive unit (4); The two ends of the telescopic rod (52) are respectively fixed on the output shaft and intermediate shaft (21) of the drive motor (51).

5. The online monitoring system for sewage outlets for water resource protection according to claim 4, characterized in that: The telescopic rod (52) includes a spline shaft (521) and a bushing (522) sleeved on the outside of the spline shaft (521). The bottom end of the spline shaft (521) is coaxially fixed with the intermediate shaft (21), and the bushing (522) is fixedly connected to the output shaft of the drive motor (51) through a coupling.

6. The online monitoring system for sewage outlets for water resource protection according to claim 4, characterized in that: The second scraper (6) includes a second inner plate (61) and a second rubber sleeve (62) sleeved on the second inner plate (61). A connecting plate (7) is fixed between the linear drive unit (4) and the drive motor (51), and the second inner plate (61) is fixedly connected to the connecting plate (7) by a connecting bracket (63).

7. The online monitoring system for sewage outlets for water resource protection according to claim 1, characterized in that: The detection sensor (3) is provided with a protective cover (32) on the outside, and the protective cover (32) is sealed and fixed to the housing (1).

8. The online monitoring system for sewage outlets for water resource protection according to claim 1, characterized in that: The receiving tube (1) includes a side tube (11) and end plates (12) integrally formed at the upper and lower ends of the side tube (11). The receiving tube (1) is set at an angle.

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