A device for sewage detection sampling

Abstract

The utility model relates to sewage detection technical field, concretely is a kind of device for sewage detection sampling, including sedimentation cylinder, the bottom end of sedimentation cylinder is detachably connected with cylinder bottom, the top of sedimentation cylinder is detachably connected with top cover assembly, sampling tube is penetrated and set on the top cover assembly, the sampling tube is used to draw out sewage in sedimentation cylinder, the inner wall of sampling tube is rotatably connected with one-way valve, the inner wall of sampling tube is fixedly connected with upper deflector, the upper deflector is above one-way valve, the inner wall of sampling tube is fixedly connected with lower deflector, the lower deflector is below one-way valve, the upper deflector and lower deflector are all inclined to the right half portion of one-way valve, the utility model's purpose is to solve the sampling tube of existing device, due to the problem of lacking the structure design of effective blocking reverse flow.

Description

Technical Field

[0001] This utility model relates to the field of wastewater detection technology, specifically to a device for wastewater detection and sampling. Background Technology

[0002] In the field of environmental monitoring and wastewater treatment, wastewater testing is an important task. By testing wastewater, we can understand the various substances it contains and thus determine its potential impact on the environment. This provides a basis for environmental supervision and wastewater treatment process optimization. To achieve effective wastewater testing, wastewater sampling is necessary. Wastewater sampling devices are the key tools for this operation. Currently, sampling devices used for wastewater testing are usually composed of several functional components and are mostly made of corrosion-resistant materials to adapt to wastewater environments with different pH levels. They are suitable for wastewater sampling operations in various locations such as the field and wastewater treatment plants, providing the necessary samples for subsequent wastewater testing.

[0003] The sampling tube of the existing device lacks a structural design that can effectively block backflow. At the moment the sampling operation is completed, or when the pressure is unstable or fluctuates during equipment operation, external sewage or sampled water can easily flow back into the sedimentation tank. This causes the liquid level in the sedimentation tank to rise or fluctuate suddenly. Furthermore, the water flowing back into the sedimentation tank may also mix with new impurities or change the concentration and composition of the water sample in the tank, thereby interfering with subsequent detection and analysis and affecting the accuracy and reliability of the test results. Utility Model Content

[0004] The purpose of this invention is to provide a device for wastewater testing and sampling, in order to solve the problem that the sampling tube of existing devices lacks a structural design that can effectively block reverse flow.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for wastewater testing and sampling includes a sedimentation cylinder, a bottom detachably connected to the bottom of the sedimentation cylinder, and a top cover assembly detachably connected to the top of the sedimentation cylinder. A sampling tube is disposed through the top cover assembly for extracting wastewater from the sedimentation cylinder. A one-way valve is rotatably connected to the inner wall of the sampling tube. An upper guide plate is fixedly connected to the inner wall of the sampling tube, located above the one-way valve. A lower guide plate is fixedly connected to the inner wall of the sampling tube, located below the one-way valve. Both the upper and lower guide plates are inclined toward the right half of the one-way valve. A limit stop is fixedly connected to the inner wall of the sampling tube, and the limit stop contacts the bottom right side of the one-way valve.

[0007] Preferably, a waste discharge pipe is connected to the bottom end of the cylinder, a sample inlet pipe is connected to the right side of the sedimentation cylinder, and an overflow pipe is connected to the left side of the sedimentation cylinder.

[0008] Preferably, the top cover assembly includes a sealing cover and a mounting base. The mounting base is snapped onto the top of the sedimentation cylinder, and the sealing cover covers the surface of the mounting base and is threadedly connected to the surface of the sedimentation cylinder.

[0009] Preferably, the sampling tube is disposed through the mounting base, a connector is coaxially connected to the top end of the sampling tube, and a sampling pump is coaxially connected to the bottom end of the sampling tube.

[0010] Preferably, a filter frame is fitted onto the surface of the sampling pump.

[0011] Preferably, a cleaning pipe is installed through the mounting base.

[0012] Preferably, an exhaust pipe is installed through the mounting base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The one-way valve structure inside the sampling tube can effectively prevent sewage backflow, avoid liquid level fluctuations caused by backflow, and ensure that the liquid level in the sedimentation tank is always in a state that can be precisely controlled, laying the foundation for the accuracy of subsequent sampling.

[0015] 2. After sampling, the waste discharge pipe can be controlled to empty the sedimentation cylinder, and the inside can be rinsed through the cleaning pipe to reduce the interference of residual sewage on the next sampling. In addition, the sedimentation cylinder and the bottom of the cylinder can be detached, which facilitates the regular cleaning of sedimented impurities and further avoids the impact of pollutant residue on the test results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the sedimentation cylinder of this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Sedimentation cylinder; 2. Bottom of cylinder; 3. Waste discharge pipe; 4. Sample inlet pipe; 5. Overflow pipe; 6. Cleaning pipe; 7. Exhaust pipe; 8. Connector; 9. Sampling pipe; 10. Upper guide plate; 11. Check valve; 12. Limiting block; 13. Lower guide plate; 14. Sampling pump; 15. Filter frame; 16. Sealing cap; 17. Mounting base. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 2 This utility model provides a technical solution: a device for wastewater testing and sampling, including a sedimentation cylinder 1, a cylinder bottom 2 detachably connected to the bottom end of the sedimentation cylinder 1, a top cover assembly detachably connected to the top end of the sedimentation cylinder 1, a sampling tube 9 penetrating the top cover assembly, the sampling tube 9 being used to extract wastewater from the sedimentation cylinder 1, a one-way valve 11 rotatably connected to the inner wall of the sampling tube 9, an upper guide plate 10 fixedly connected to the inner wall of the sampling tube 9, the upper guide plate 10 being located above the one-way valve 11, a lower guide plate 13 fixedly connected to the inner wall of the sampling tube 9, the lower guide plate 13 being located below the one-way valve 11, both the upper guide plate 10 and the lower guide plate 13 being inclined towards the right half of the one-way valve 11, and a limit stop 12 fixedly connected to the inner wall of the sampling tube 9. 12 contacts the bottom right side of the one-way valve 11. By setting the lower guide plate 13, when the sampling tube 9 extracts sewage, the sewage moves from bottom to top and is guided by the lower guide plate 13 to flow toward the right half of the one-way valve 11, causing the one-way valve 11 to rotate counterclockwise and open, allowing sewage to be extracted normally. By setting the upper guide plate 10, when the sewage flows back, the sewage moves from top to bottom and is guided by the upper guide plate 10 to flow toward the right half of the one-way valve 11, causing the one-way valve 11 to have a tendency to rotate clockwise. However, since the limit stop 12 is located at the bottom right side of the one-way valve 11, it restricts the clockwise rotation of the one-way valve 11, thus preventing the one-way valve 11 from opening and preventing sewage from flowing back into the sedimentation tank 1, which would make it difficult to accurately control the liquid level in the sedimentation tank 1.

[0021] A waste discharge pipe 3 is connected to the bottom end of the sedimentation tank 1. A sample inlet pipe 4 is connected to the right side of the sedimentation tank 1, and an overflow pipe 5 is connected to the left side of the sedimentation tank 1. Wastewater is drawn into the sedimentation tank 1 through the sample inlet pipe 4. Conventionally, a sample pump is installed at the end of the sample inlet pipe 4. The input end of the sample pump is connected to the wastewater source through a pipeline, and the output end of the sample pump is connected to the sample inlet pipe 4. A first solenoid valve is installed inside the sample inlet pipe 4. The control module is electrically connected to the sample pump and the first solenoid valve, and can control the start and stop of the sample pump and the first solenoid valve. The sample pump and the first solenoid valve are not shown in the attached diagram. This is a standard configuration and is known to those skilled in the art. Excess wastewater overflows from the overflow pipe 5, and wastewater in the sedimentation tank 1 can be discharged from the waste discharge pipe 3. Similarly, the waste discharge pipe 3 is equipped with a waste discharge pump and a second solenoid valve. The control module is electrically connected to the waste discharge pump and the third solenoid valve and can control their operation and switching. The sample inlet pipe 4 and the overflow pipe 5 can also be equipped with a guide plate 10, a one-way valve 11, a limit block 12, and a lower guide plate 13 to prevent backflow.

[0022] The top cover assembly includes a sealing cover 16 and a mounting base 17. The mounting base 17 is snapped onto the top of the sedimentation cylinder 1. The sealing cover 16 covers the surface of the mounting base 17 and is threadedly connected to the surface of the sedimentation cylinder 1. The mounting base 17 is fixed to the top of the sedimentation cylinder 1 by snapping, which allows for quick positioning.

[0023] The sampling tube 9 is installed through the mounting base 17. The top end of the sampling tube 9 is coaxially connected to the connector 8, and the bottom end of the sampling tube 9 is coaxially connected to the sampling pump 14. The sampling pump 14 draws sewage from the sedimentation tank 1. The sewage flows out from the connector 8 through the sampling tube 9 to complete the sampling. The connector 8 adopts a standardized design to facilitate quick connection with external testing equipment.

[0024] A filter frame 15 is fitted onto the surface of the sampling pump 14. The filter frame 15 is fitted onto the surface of the sampling pump 14 and can intercept impurities, preventing the sampling pump 14 from becoming clogged, thereby ensuring the reliability of the sampling process.

[0025] A cleaning pipe 6 is installed through the mounting base 17. The cleaning pipe 6 is used to rinse the inside of the sedimentation tank 1. One end of the cleaning pipe 6 is connected to a clean water source, and the other end extends into the sedimentation tank 1. The cleaning pump and the third solenoid valve are installed on the cleaning pipe 6. The control module is electrically connected to the cleaning pump and the third solenoid valve, which can control their operation and switching. After sampling, the inside of the sedimentation tank 1 is rinsed to avoid residual sample water from interfering with the next sampling and to ensure the reliability of the sampling.

[0026] An exhaust pipe 7 is installed through the mounting base 17 to balance the air pressure inside and outside the sedimentation tank 1, remove gas interference, and ensure the safe and stable operation of the system.

[0027] A liquid level detection module is installed inside the sedimentation tank 1, which uses a liquid level sensor to monitor the liquid level information inside the sedimentation tank 1 in real time and transmit the information to the control module. The sedimentation tank 1 is also equipped with a suspended solids concentration sensor, which is electrically connected to the control module and can detect the concentration of suspended solids in the wastewater. The control module uses a microcontroller or PLC. When the liquid level detection module detects that the liquid level in the sedimentation tank 1 has reached the preset value, the control module controls the sampling tube 4 to stop the sampling. The control module adjusts the sedimentation time of the wastewater in the sedimentation tank 1 according to the concentration value detected by the suspended solids concentration sensor. After sampling is completed, the control module first controls the waste discharge tube 3 to empty the sedimentation tank 1, and then controls the cleaning tube 6 to rinse the inside of the sedimentation tank 1. By setting up the liquid level detection module and the control module, the sampling time can be automatically controlled according to the liquid level in the sedimentation module to ensure that there is an appropriate amount of wastewater in the sedimentation module for treatment. With the help of the suspended solids concentration sensor and the control module, the sedimentation time can be adjusted according to the concentration of suspended solids in the wastewater to improve the sedimentation effect and ensure the accuracy of subsequent sampling.

[0028] The specific steps of this scheme are as follows: Start the control module, open the first solenoid valve on the injection tube 4, start the injection pump, and the sewage enters the sedimentation tank 1 through the injection tube 4. The liquid level detection module monitors the liquid level in the sedimentation tank 1 in real time and transmits the data to the control module. During the injection process, when the excess sewage in the sedimentation tank 1 overflows from the overflow pipe 5, the control module controls the injection pump to stop working, closes the first solenoid valve, and stops the injection.

[0029] After the sample injection stops, the wastewater in sedimentation tank 1 begins to settle. The suspended solids concentration sensor detects the concentration of suspended solids in the wastewater in real time and transmits the data to the control module. The control module automatically adjusts the settling time according to the concentration value. During the settling process, the sedimentation tank 1 is kept stable to avoid being shaken by external forces.

[0030] After sedimentation is complete, the sampling pump 14 is started. The sewage in the sedimentation tank 1 enters from the bottom of the sampling pipe 9. The sewage moves from bottom to top and is guided by the lower guide plate 13 to flow towards the right half of the one-way valve 11, causing the one-way valve 11 to rotate counterclockwise and open. The sewage flows out from the connector 8 through the sampling pipe 9, completing the sampling. After sampling is completed, the sampling pump 14 is turned off. If sewage backflow occurs, the sewage moves from top to bottom and is guided by the upper guide plate 10 to flow towards the right half of the one-way valve 11, causing the one-way valve 11 to tend to rotate clockwise. The limit block 12 restricts the clockwise rotation of the one-way valve 11 to prevent sewage backflow.

[0031] After sampling is completed, the control module controls the opening of the second solenoid valve on the waste discharge pipe 3 and starts the waste discharge pump. The sewage in the sedimentation tank 1 is discharged through the waste discharge pipe 3. After the sedimentation tank 1 is emptied, the control module closes the waste discharge pump and the second solenoid valve. Then, the control module controls the opening of the third solenoid valve on the cleaning pipe 6 and starts the cleaning pump. Clean water enters the sedimentation tank 1 through the cleaning pipe 6 to rinse the inside of the sedimentation tank 1. After rinsing is completed, the cleaning pump and the third solenoid valve are closed, and the waste discharge pipe 3 is opened, or the bottom of the tank 2 is disassembled to discharge the rinsing wastewater.

[0032] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for wastewater testing and sampling, comprising a sedimentation tank (1), characterized in that: The bottom of the sedimentation cylinder (1) is detachably connected to a cylinder bottom (2), and the top of the sedimentation cylinder (1) is detachably connected to a top cover assembly. A sampling tube (9) is provided through the top cover assembly. The sampling tube (9) is used to extract sewage from the sedimentation cylinder (1). A one-way valve (11) is rotatably connected to the inner wall of the sampling tube (9). An upper guide plate (10) is fixedly connected to the inner wall of the sampling tube (9). The upper guide plate (10) is located above the one-way valve (11). A lower guide plate (13) is fixedly connected to the inner wall of the sampling tube (9). The lower guide plate (13) is located below the one-way valve (11). Both the upper guide plate (10) and the lower guide plate (13) are inclined toward the right half of the one-way valve (11). A limit stop (12) is fixedly connected to the inner wall of the sampling tube (9). The limit stop (12) is in contact with the bottom right side of the one-way valve (11).

2. The device for wastewater detection and sampling according to claim 1, characterized in that, Waste discharge pipe (3) is connected to the bottom end of the bottom of the cylinder (2), sample inlet pipe (4) is connected to the right side of the sedimentation cylinder (1), and overflow pipe (5) is connected to the left side of the sedimentation cylinder (1).

3. The device for wastewater detection and sampling according to claim 1, characterized in that, The top cover assembly includes a sealing cover (16) and a mounting base (17). The mounting base (17) is snapped onto the top of the sedimentation cylinder (1). The sealing cover (16) covers the surface of the mounting base (17) and is threadedly connected to the surface of the sedimentation cylinder (1).

4. The device for wastewater detection and sampling according to claim 3, characterized in that, The sampling tube (9) is installed through the mounting base (17). The top end of the sampling tube (9) is coaxially connected to the connector (8), and the bottom end of the sampling tube (9) is coaxially connected to the sampling pump (14).

5. The device for wastewater detection and sampling according to claim 4, characterized in that, A filter frame (15) is fitted onto the surface of the sampling pump (14).

6. The device for wastewater detection and sampling according to claim 3, characterized in that, A cleaning pipe (6) is installed through the mounting base (17).

7. The device for wastewater detection and sampling according to claim 3, characterized in that, An exhaust pipe (7) is installed through the mounting base (17).

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