Water quality detection sampling device in sewage treatment pipe network

Abstract

The utility model discloses a water quality detection sampling device in a sewage treatment pipe network, and belongs to the technical field of sewage detection sampling. A water quality detection sampling device in a sewage treatment pipe network comprises a protection box body and further comprises a sampling cylinder arranged in the protection box body, and a detection sensor assembly is arranged in the sampling cylinder; the sampling pump is fixedly arranged in the protection box body; the first control valve is fixedly arranged on the outer wall of the protection box body, and the output end of the first control valve is connected with the input end of the sampling pump through a first pipeline; when the sampling device is used in a fixed-point sampling mode, sewage in a network pipe can be extracted in real time for real-time detection, so that the problems that a mixture of water and sludge is conveyed in a municipal sewage pipeline, the properties of the sewage and the sludge are different, and the real water quality of the pipeline cannot be accurately reflected by adopting online sampling and regular sampling are solved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater testing and sampling technology, and in particular to a water quality testing and sampling device for wastewater treatment pipelines. Background Technology

[0002] Wastewater treatment pipe networks refer to the pipe network system in an urban environment, consisting of wastewater pipes, wastewater treatment facilities, and wastewater reuse systems. Water quality testing and sampling devices within wastewater treatment pipe networks are key equipment for ensuring the accuracy and representativeness of water quality monitoring data. ；

[0003] Currently, wastewater pipe network sampling devices have the following defects:

[0004] 1. Municipal sewage pipelines transport a mixture of water and sludge, and the properties of sewage and sludge are different. Online sampling and periodic sampling cannot accurately reflect the true water quality in the pipeline.

[0005] 2. The water quality inside sewage pipes is complex, especially at pipe bends, diversion points, areas where sludge settles, and areas where sludge is suspended. These areas can easily cause blockage of the detection probe, affecting the detection results and the subsequent use of the detection probe.

[0006] 3. Mobile testing equipment can only perform surface testing on sludge and cannot test the water quality inside the sludge;

[0007] 4. Regular sampling of municipal sewage pipe networks requires opening sewage well covers and climbing ladders inside the pipes for sampling, which is time-consuming and labor-intensive, and the test results are inaccurate and pose certain safety hazards.

[0008] Therefore, a wastewater treatment pipeline water quality testing and sampling device is provided that can sample municipal sewage pipelines in real time without affecting the operation of the testing equipment. Utility Model Content

[0009] This invention provides a water quality testing and sampling device for sewage treatment pipe networks to solve the problems in the prior art.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A water quality testing and sampling device for a wastewater treatment pipeline network includes a protective housing and further includes: a sampling cylinder disposed within the protective housing, wherein a detection sensor assembly is disposed within the sampling cylinder; a sampling pump fixedly installed within the protective housing; a first control valve fixedly installed on the outer wall of the protective housing, wherein the output end of the first control valve is connected to the input end of the sampling pump via a first pipe, a connecting pipe is fixedly installed at the output end of the first control valve, and a connector is fixedly installed at the end of the connecting pipe; and a filter assembly disposed within the protective housing, wherein the input end of the filter assembly is connected to the output end of the sampling pump via a second pipe, and the output end of the filter assembly is connected to the top of the sampling cylinder via a third pipe.

[0012] In a preferred embodiment of the present invention, the sampling tube includes a sampling base fixedly installed inside the protective box, a tube body is inserted into the sampling base, and a sealing ring is fitted onto the tube body and the sampling base, with the sealing ring and the sampling base being interference-fitted.

[0013] In a preferred embodiment of the present invention, the filter assembly includes activated carbon particles, which are coated with multiple protective layers, the protective layers being, from the inside out, PP meltblown cloth, ceramic membrane, plastic filter layer, and metal wire mesh layer.

[0014] In a preferred embodiment of this utility model, the sensor assembly includes a pH sensor, a COD sensor, and a DO sensor that are fixedly mounted on the sampling base.

[0015] In a preferred embodiment of this utility model: a second control valve is fixedly installed on the outer wall of the protective box, and the second control valve is connected to the first pipe through a fourth pipe; a third control valve is fixedly installed on the bottom of the side of the protective box, and the third control valve is connected to the drain end of the sampling tube through a fifth pipe.

[0016] In a preferred embodiment of this utility model: a controller is fixedly installed on the top of the protective box, a protective cover is inserted into the top of the protective box, and the controller is located inside the protective cover.

[0017] As a preferred embodiment of this utility model: a telescopic steel pipe is threadedly connected to the connector head, and a placement hole is provided inside the protective box.

[0018] As a preferred embodiment of the present invention: a universal locking wheel is fixedly installed at the bottom of the protective box, and a pull rod is slidably connected to the protective box.

[0019] Compared with the prior art, this utility model provides a water quality testing and sampling device for sewage treatment pipe networks, which has the following beneficial effects:

[0020] 1. When the water quality testing and sampling device in the sewage treatment pipeline is used in the fixed-point sampling mode, it can extract sewage in the pipeline in real time for real-time monitoring. This solves the problem that the sewage and sludge transported in the municipal sewage pipeline are mixed, and the sewage and sludge have different properties. Online sampling and periodic sampling cannot accurately reflect the true water quality of the pipeline.

[0021] 2. The water quality testing and sampling device in this sewage treatment pipeline network cleans the sensor components by spraying cleaning liquid into the sampling tube and works in conjunction with the filter components, thereby solving the problem of blockage inside the detection probe and avoiding a decrease in detection accuracy;

[0022] 3. The water quality testing and sampling device in this sewage treatment pipeline network extends a telescopic steel pipe. Utilizing the rigidity and ductility of the telescopic steel pipe, it can be inserted deep into the sludge through the sewer manhole. This solves the problems of mobile testing equipment only being able to test the surface of the sludge and not being able to test the water quality inside the sludge, as well as the problems of regular sampling of municipal sewage pipelines requiring opening sewage manhole covers and climbing ladders inside the pipelines, which is time-consuming, labor-intensive, and results in inaccurate test results, and also poses certain safety hazards. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a water quality testing and sampling device in a sewage treatment pipeline network proposed in this utility model;

[0024] Figure 2 A three-dimensional cross-section of a water quality testing and sampling device for a sewage treatment pipeline network proposed in this utility model. Figure 1 ;

[0025] Figure 3 A three-dimensional cross-section of a water quality testing and sampling device for a sewage treatment pipeline network proposed in this utility model. Figure 2 ;

[0026] Figure 4 A three-dimensional cross-section of a water quality testing and sampling device for a sewage treatment pipeline network proposed in this utility model. Figure 3 ;

[0027] Figure 5 This is a cross-sectional view of the filter assembly of a water quality testing and sampling device in a sewage treatment pipeline network proposed in this utility model.

[0028] Figure 6 This is a schematic diagram of the structure of a telescopic steel pipe for a water quality testing and sampling device in a sewage treatment pipeline network, as proposed in this utility model.

[0029] In the diagram: 1. Protective housing; 2. Universal locking wheel; 3. Sampling base; 4. Cylinder; 5. Sealing ring; 6. Sampling pump; 7. Filter assembly; 71. Metal wire mesh layer; 72. Plastic filter layer; 73. Ceramic membrane; 74. PP meltblown fabric; 75. Activated carbon granules; 8. First pipe; 9. Second pipe; 10. Third pipe; 11. First control valve; 12. Connecting pipe; 13. Connector; 14. Telescopic steel pipe; 15. Fourth pipe; 16. Second control valve; 17. Controller; 18. Protective cover; 19. Fifth pipe; 20. Third control valve; 21. Pull rod; 22. Sensor assembly; 23. Placement hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Example: Refer to Figures 1-6 A water quality testing and sampling device for a sewage treatment pipeline network includes a protective housing 1, and further includes: a sampling cylinder disposed inside the protective housing 1, wherein a detection sensor assembly 22 is disposed inside the sampling cylinder; a sampling pump 6 fixedly installed inside the protective housing 1; a first control valve 11 fixedly installed on the outer wall of the protective housing 1, wherein the output end of the first control valve 11 is connected to the input end of the sampling pump 6 through a first pipe 8, and a connecting pipe 12 is fixedly installed at the output end of the first control valve 11, and a connector 13 is fixedly installed at the end of the connecting pipe 12; and a filter assembly 7 disposed inside the protective housing 1, wherein the input end of the filter assembly 7 is connected to the output end of the sampling pump 6 through a second pipe 9, and the output end of the filter assembly 7 is connected to the top of the sampling cylinder through a third pipe 10.

[0033] In this embodiment, the sampling pump 6 is started, and the sampling pump 6 draws sewage from the network pipe through the connector 13. After filtering out large particles through the filter assembly 7, the sewage is discharged into the sampling cylinder. The sensor assembly 22 inside the sampling cylinder detects the sewage. The filter assembly 7 filters out impurities in the sewage, which can prevent impurities from covering the sensor assembly 22 and affecting the detection.

[0034] Reference Figure 2The sampling tube includes a sampling base 3 fixedly installed inside the protective housing 1, a cylinder 4 inserted into the sampling base 3, and a sealing ring 5 fitted on the cylinder 4 and the sampling base 3, with the sealing ring 5 and the sampling base 3 being interference-fitted.

[0035] The cylinder 4 and the sampling base 3 can be separated, which facilitates the cleaning of the cylinder 4, the sampling base 3 and the sensor assembly 22, thereby restoring the accuracy of the sensor assembly 22 in detecting sewage. The sealing ring 5 is used to prevent sewage from overflowing from the gap between the sampling base 3 and the cylinder 4.

[0036] Reference Figure 5 The filter assembly 7 includes activated carbon particles 75, which are covered with multiple protective layers. From the inside out, the protective layers are PP meltblown cloth 74, ceramic membrane 73, plastic filter layer 72, and metal wire mesh layer 71.

[0037] Among them, activated carbon granules 75 have good adsorption performance and can remove organic matter, odors and other substances from wastewater; PP meltblown cloth 74 can initially filter larger particles and reduce the burden on subsequent filter layers; ceramic membrane 73 has excellent filtration performance and chemical stability and can further remove fine particles. As an intermediate filter layer, it provides additional filtration effect; the outermost layer provides additional strength and support while preventing large particles from entering the device.

[0038] Reference Figure 2 The sensor assembly 22 includes a pH sensor, a COD sensor, and a DO sensor that are fixedly mounted on the sampling base 3.

[0039] pH sensors are used to measure the acidity or alkalinity (pH value) of wastewater. By monitoring changes in pH value, it can be determined whether there is pollution from acidic or alkaline substances in the wastewater.

[0040] COD sensors are used to measure the chemical oxygen demand (COD) in wastewater, reflecting the degree of organic pollution in water bodies;

[0041] DO sensors are used to measure the concentration of dissolved oxygen (DO) in wastewater. The concentration of dissolved oxygen directly affects the survival and reproduction of aquatic organisms and is also an important reference for the effectiveness of wastewater treatment.

[0042] In summary, pH, COD, and DO sensors together constitute a comprehensive water quality monitoring system that can accurately reflect the acidity / alkalinity, organic pollution level, and biological activity of wastewater.

[0043] Reference Figures 1-4A second control valve 16 is fixedly installed on the outer wall of the protective box 1. The second control valve 16 is connected to the first pipe 8 through the fourth pipe 15. A third control valve 20 is fixedly installed on the bottom side of the protective box 1. The third control valve 20 is connected to the drain end of the sampling tube through the fifth pipe 19.

[0044] In this embodiment, the second control valve 16 is connected to a clean water source or a water tank containing cleaning solution. The first control valve 11 is closed, and the second control valve 16 and the third control valve 20 are opened. The sampling pump 6 is started, and the sampling pump 6 is used to draw clean water. The clean water is discharged into the sampling tube to rinse and clean the sampling tube and the sensor assembly 22 inside the sampling tube. The wastewater from the cleaning is finally discharged through the third control valve 20.

[0045] Reference Figure 1 and Figure 2 A controller 17 is fixedly installed on the top of the protective enclosure 1, and a protective cover 18 is inserted into the top of the protective enclosure 1. The controller 17 is located inside the protective cover 18.

[0046] The controller 17 includes a control module and a display module. The control module is used to control the operation of the first control valve 11, the second control valve 16, the third control valve 20, the sensor assembly 22, and the sampling pump 6. The display assembly is used to display the data detected by the sensor assembly 22.

[0047] Reference Figure 1 and Figure 6 The connector 13 is threaded with a telescopic steel pipe 14, and the protective box 1 is provided with a placement hole 23.

[0048] The telescopic steel pipe 14 is composed of multiple steel pipes, with external and internal threads at both ends. The external thread of the inner steel pipe is threaded to the internal thread of the outer steel pipe. Therefore, the steel pipe can be fixed by the threads after the telescopic steel pipe 14 is extended. The rigidity of the steel pipe makes it easy to insert the steel pipe deep into the network pipe node, so that the sampling is not affected by sludge. When not in use, the telescopic steel pipe 14 can be stored in the placement hole 23.

[0049] Reference Figure 1 The bottom of the protective housing 1 is fixedly equipped with a universal locking wheel 2, and a pull rod 21 is slidably connected to the protective housing 1. In this embodiment, the housing can be moved by the pull rod 21 in cooperation with the universal locking wheel 2.

[0050] In summary, this device has two usage modes: one is as a fixed-point device, and the other is as a mobile device.

[0051] When used as a fixed-point device, the connector 13 is connected to the sampling port on the sewage pipe network, and the second control valve 16 is connected to a clean water source or a water tank containing cleaning solution. The controller 17 controls the sampling pump 6 and the first control valve 11 to open. The sampling pump 6 draws sewage into the sampling tube for testing. The third control valve 20 can be used to discharge the sampled sewage into an external sample bottle, or the third control valve 20 can be connected to the sewage pipe network to directly discharge the tested sewage into the sewage pipe network.

[0052] When automatic timed detection is required, after the sewage is sampled and detected, the controller 17 controls the third control valve 20 to connect to the sewage pipe network, closes the first control valve 11, opens the second control valve 16 and the third control valve 20, starts the sampling pump 6 to extract cleaning liquid or clean water, and sends the cleaning liquid or clean water into the sampling tube to clean the inner wall of the sampling tube and the sensor assembly 22.

[0053] When used as a mobile device, the connector 13 is connected to the telescopic steel pipe 14, the device is moved to the designated location by the pull rod 21, the telescopic steel pipe 14 is extended, the end of the telescopic steel pipe 14 is inserted into the network pipe from the sewer manhole, and then the first control valve 11 is opened and the sampling pump 6 is started to take samples.

[0054] In summary, when used in fixed-point sampling mode, this device can extract sewage from the pipeline in real time for real-time detection, thereby solving the problem that the sewage and sludge transported in municipal sewage pipelines are a mixture, and that the sewage and sludge have different properties, making it impossible to accurately reflect the true water quality of the pipeline using online sampling or periodic sampling.

[0055] By spraying cleaning fluid into the sampling tube to clean the sensor assembly 22 and in conjunction with the filter assembly 7, the problem of blockage inside the detection probe (i.e., sensor assembly 22) is solved, and the detection accuracy is not reduced.

[0056] By extending the telescopic steel pipe 14 and utilizing its rigidity and ductility, it can be inserted deep into the sludge through the sewer manhole. This solves the problems that mobile testing equipment can only perform surface testing on the sludge and cannot test the water quality inside the sludge. It also addresses the issues of regular sampling of municipal sewage pipe networks, which requires opening sewage manhole covers and climbing ladders inside pipes for sampling, resulting in time-consuming, labor-intensive, inaccurate test results and certain safety hazards.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A water quality detection sampling device in a sewage treatment pipe network, comprising a protection box (1), characterized in that, Also include: The sampling cylinder is arranged in the protection box (1), and a detection sensor assembly (22) is arranged in the sampling cylinder; The sampling pump (6) is fixedly installed in the protection box (1); The first control valve (11) is fixedly installed on the outer wall of the protection box (1), the output end of the first control valve (11) is connected with the input end of the sampling pump (6) through the first pipeline (8), the output end of the first control valve (11) is fixedly installed with a connecting pipe (12), and the end of the connecting pipe (12) is fixedly installed with a connecting head (13); The filter assembly (7) is arranged in the protection box (1), the input end of the filter assembly (7) is connected with the output end of the sampling pump (6) through the second pipeline (9), and the output end of the filter assembly (7) is connected with the top of the sampling cylinder through the third pipeline (10).

2. The water quality detection sampling device in a sewage treatment pipe network according to claim 1, characterized in that, The sampling cylinder includes a sampling base (3) fixedly installed in the protection box (1), the sampling base (3) is inserted with a cylinder body (4), the cylinder body (4) is sleeved with a sealing ring (5) on the sampling base (3), and the sealing ring (5) is connected with the sampling base (3) in an interference fit.

3. The water quality detection sampling device in a sewage treatment pipe network according to claim 1, characterized in that, The filter assembly (7) includes activated carbon particles (75), and the activated carbon particles (75) are coated with multiple protective layers, and the protective layers are PP melt-blown cloth (74), ceramic membrane (73), plastic filter layer (72) and metal wire mesh layer (71) from inside to outside.

4. The water quality detection sampling device in a sewage treatment pipe network according to claim 2, characterized in that, The sensor assembly (22) includes a PH sensor, a COD sensor and a DO sensor fixedly installed on the sampling base (3).

5. The water quality detection sampling device in a sewage treatment pipe network according to claim 1, characterized in that, The second control valve (16) is fixedly installed on the outer wall of the protection box (1), and the second control valve (16) is connected with the first pipeline (8) through the fourth pipeline (15); The third control valve (20) is fixedly installed on the bottom of the side of the protection box (1), and the third control valve (20) is connected with the drainage end of the sampling cylinder through the fifth pipeline (19).

6. The water quality detection sampling device in a sewage treatment pipe network according to claim 1, characterized in that, The controller (17) is fixedly installed on the top of the protection box (1), the protection cover (18) is inserted into the protection box (1), and the controller (17) is arranged in the protection cover (18).

7. The water quality detection sampling device in a sewage treatment pipe network according to claim 1, characterized in that, The connecting head (13) is threadedly connected with the telescopic steel pipe (14), and the protection box (1) is provided with a placing hole (23).

8. The water quality detection sampling device in a sewage treatment pipe network according to claim 1, characterized in that, The universal locking wheel (2) is fixedly installed on the bottom of the protection box (1), and the pull rod (21) is slidably connected to the protection box (1).

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