Sludge settling ratio monitoring device
By combining photoelectric signal automatic detection with ultrasonic cleaners, the problems of low efficiency and high cost of traditional sludge settling ratio measurement devices have been solved, and automated and accurate sludge settling ratio measurement has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 武汉格林环源净化工程有限公司
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional sludge settling ratio measurement devices require manual observation and calculation, resulting in high costs and low efficiency.
The system uses a light source transmitter and receiver in conjunction with a drive mechanism and detection components to automatically detect the sludge settling ratio. It also uses an ultrasonic cleaner to automatically clean the measuring cylinder and calculates the settling ratio using photoelectric signals.
It has enabled automated measurement, reduced costs, improved measurement efficiency and accuracy, and reduced human error.
Smart Images
Figure CN224399201U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a sludge settling ratio monitoring device. Background Technology
[0002] In the field of wastewater treatment, the traditional activated sludge process is widely used. It is a biological wastewater treatment technology, primarily using activated sludge as the main biological treatment method. During the operation of the aeration tank, it is necessary to measure the sludge settling ratio (SV). The sludge settling ratio (SV) refers to the volume ratio of the settled sludge to the mixed liquor after the aeration tank's mixed liquor has been left to settle in a graduated cylinder for 30 minutes. This indicator reflects the amount of sludge during the aeration tank's operation, allowing for the control and adjustment of activated sludge discharge. It also provides a direct indication of abnormal phenomena such as sludge bulking.
[0003] For example, Chinese utility model patent CN217359502U discloses a sludge settling ratio measuring device. This device uses a flexible shading curtain, which can be raised during summer sunlight and lowered during winter low temperatures to reduce the impact of large temperature changes on the activated sludge settling ratio. This allows the measurement results to accurately reflect the actual status of the biochemical system, reducing deviations caused by process operation and improving measurement accuracy. However, this device relies on manual observation and calculation to measure the sludge settling ratio, requiring long-term monitoring and measurement, increasing operating costs, and exhibiting low measurement efficiency. Utility Model Content
[0004] In view of this, the present invention proposes a sludge settling ratio monitoring device, which can solve the problems of high cost and low efficiency caused by manually observing and calculating the sludge settling ratio.
[0005] The technical solution of this utility model is implemented as follows:
[0006] This utility model provides a sludge settling ratio monitoring device, comprising:
[0007] A frame on which a measuring cylinder is mounted;
[0008] A drive mechanism, mounted on the frame, has a movable end that reciprocates along the height direction of the measuring cylinder. A moving part is mounted on the movable end. The drive mechanism also includes a detection component for detecting the position information of the moving part.
[0009] The monitoring mechanism includes a monitoring ring fitted onto the measuring cylinder, the monitoring ring being disposed on the movable component, and a light source emitter and a light source receiver disposed on the monitoring ring, the light source receiver and the light source emitter being located on opposite radial sides of the monitoring ring.
[0010] Based on the above technical solutions, preferably, the driving mechanism includes a first rotator disposed on the frame, a rotating screw disposed on the first rotator, the axis of the rotating screw being parallel to the height direction of the measuring cylinder, the moving member being threaded through the rotating screw, and the detection component being disposed at the top end of the rotating screw.
[0011] Based on the above technical solutions, preferably, a cleaning mechanism is also included, wherein the cleaning mechanism includes:
[0012] A displacement component, mounted on the frame, has a moving end that reciprocates along the height direction of the measuring cylinder; and
[0013] An ultrasonic cleaner is disposed at the moving end of the displacement component;
[0014] The measuring cylinder has an opening at the top, which is located on the moving path of the ultrasonic cleaner.
[0015] More preferably, the displacement component includes a second rotator disposed on the frame, the rotating end of the second rotator being connected to a drum, a cable being wound on the drum, and the ultrasonic cleaner being connected to the cable.
[0016] Based on the above technical solutions, preferably, the bottom of the measuring cylinder has a first interface and the top of the measuring cylinder has a second interface.
[0017] More preferably, the frame is provided with at least two measuring cylinders, at least two sets of driving mechanisms and at least two sets of monitoring mechanisms, with each measuring cylinder spaced apart on the frame, and each driving mechanism and each monitoring mechanism corresponding to each measuring cylinder.
[0018] More preferably, it also includes a housing, the housing having a receiving cavity, the frame being disposed within the receiving cavity, and a controller being disposed on the housing, with both the drive mechanism and the monitoring mechanism being controlled and connected to the controller.
[0019] More preferably, the housing is provided with:
[0020] A drain outlet, each of the second interfaces being connected to the drain outlet via an overflow pipe, and each of the first interfaces being connected to the drain outlet via a drain pipe, the drain pipe being equipped with a drain valve connected to the controller; and
[0021] The aerobic inlet is connected to each of the first interfaces via an aerobic pipe, and the aerobic pipe is equipped with an aerobic valve that is connected to the controller.
[0022] More preferably, the housing is also provided with a water inlet, and each of the first interfaces is connected to the water inlet through a water inlet pipe, and the water inlet pipe is provided with a water inlet valve connected to the controller.
[0023] Based on the above technical solutions, preferably, the enclosure is provided with an observation window and a side door, and the side door is rotatably mounted on the enclosure.
[0024] The sludge settling ratio monitoring device of this invention has the following advantages over the prior art:
[0025] (1) By placing the light source emitter and the light source receiver opposite each other, the light can pass perpendicularly through the sample in the measuring cylinder, reducing the refraction and scattering of the light and improving the accuracy of the measurement. The position information of the moving part is detected by the detection component. By monitoring the movement of the ring, photoelectric signals at different heights can be obtained in real time, and then the sludge settling ratio can be calculated.
[0026] (2) An ultrasonic cleaner is installed inside the measuring cylinder. The ultrasonic cleaner is driven to rise and fall by the displacement component to continue to automatically clean the inside of the measuring cylinder, remove dirt and residual sludge from the inner wall, ensure the light transmittance of the measuring cylinder, and thus ensure the accuracy of subsequent measurements. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of the overall structure of the sludge settling ratio monitoring device of this utility model;
[0029] Figure 2 This is a schematic diagram illustrating the internal structure of the sludge settling ratio monitoring device of this utility model.
[0030] Figure 3 This is a schematic diagram of the internal structure of the sludge settling ratio monitoring device of this utility model from another direction.
[0031] Figure 4 for Figure 3 Enlarged view of part A in the image;
[0032] Figure 5 This is a schematic diagram illustrating the structure of the monitoring mechanism in the sludge settling ratio monitoring device of this utility model;
[0033] Figure 6This is a schematic diagram of the structure used to illustrate the first interface in the sludge settling ratio monitoring device of this utility model;
[0034] Figure label:
[0035] 1. Frame; 2. Measuring cylinder; 21. Opening; 22. First interface; 23. Second interface; 3. Drive mechanism; 31. Moving part; 32. First rotator; 33. Rotating screw; 4. Monitoring mechanism; 41. Monitoring ring; 42. Light source emitter; 43. Light source receiver; 5. Detection component; 6. Cleaning mechanism; 61. Displacement component; 611. Second rotator; 612. Drum; 613. Cable; 62. Ultrasonic cleaner; 7. Housing; 71. Receptacle; 72. Drain outlet; 73. Aerobic inlet; 74. Water inlet; 8. Controller; 9. Overflow pipe; 10. Drain pipe; 11. Drain valve; 12. Aerobic pipe; 13. Aerobic valve; 14. Water inlet pipe; 15. Water inlet valve; 16. Interface valve; 17. Observation window; 18. Side door. Detailed Implementation
[0036] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0037] like Figures 1 to 6 As shown, this utility model provides a sludge settling ratio monitoring device, which includes a frame 1, a drive mechanism 3, and a monitoring mechanism 4. A measuring cylinder 2 is mounted on the frame 1. The drive mechanism 3 is mounted on the frame 1, and its movable end reciprocates along the height direction of the measuring cylinder 2. A moving part 31 is mounted on the movable end. The drive mechanism 3 also includes a detection component 5 for detecting the position information of the moving part 31. The monitoring mechanism 4 includes a monitoring ring 41 sleeved on the measuring cylinder 2. The monitoring ring 41 is mounted on the moving part 31. A light source emitter 42 and a light source receiver 43 are mounted on the monitoring ring 41. The light source receiver 43 and the light source emitter 42 are located on opposite radial sides of the monitoring ring 41.
[0038] Sludge is placed inside the measuring cylinder 2. The light source emitter 42 and the light source receiver 43 are placed opposite each other, forming an optical path. When sludge enters this optical path, it blocks the light emitted by the light source emitter 42, reducing the amount of light received by the light source receiver 43, thus causing a change in the signal value of the light source receiver 43. The drive mechanism 3 drives the moving part 31 to move continuously. During the movement of the moving part 31, the detection component 5 detects the position information of the moving part 31. The monitoring mechanism 4 moves synchronously and reads data from multiple points through the light source receiver 43, acquiring photoelectric signals at different heights in real time, and then calculating the sludge settling ratio. This device eliminates the need for manual observation and calculation of the sludge settling ratio, resulting in low cost and high efficiency.
[0039] In some embodiments, the drive mechanism 3 includes a first rotator 32 disposed on the frame 1, a rotating screw 33 disposed on the first rotator 32, the axial direction of the rotating screw 33 being parallel to the height direction of the measuring cylinder 2, the moving member 31 being threaded through the rotating screw 33, and the detection component 5 being disposed at the top end of the rotating screw 33.
[0040] The first rotator 32 includes a rotary motor or a rotary cylinder, etc. In this embodiment, the first rotator 32 uses a first rotary motor, which is detachably fixed to the frame 1 by bolts. The output shaft of the first rotary motor is coaxially fixed with the rotating lead screw 33, and the moving part 31 is threaded through the rotating lead screw 33. Therefore, the rotation of the output shaft of the first rotary motor will drive the rotating lead screw 33 to rotate synchronously, and the rotating lead screw 33 will drive the moving part 31 to move up and down reciprocally. In addition, in order to prevent the moving part 31 from rotating during the lifting process, a guide component is also provided between the moving part 31 and the frame 1. The guide component ensures the stability of the moving part 31 during reciprocating lifting. It can be understood that the guide component can be any component that can realize the stability of the moving part 31, such as the cooperation of a slide rail and a slide groove, or the cooperation of a slide groove and a slider, etc.
[0041] The detection component 5 is used to detect the position information of the moving part 31. The detection component 5 includes a laser displacement sensor, a photoelectric encoder, or a Hall effect sensor. In this embodiment, the detection component 5 adopts a laser displacement sensor. The laser displacement sensor is set at the top of the rotating screw 33. When detecting the sludge settling ratio, the drive mechanism 3 drives the component to descend, and the laser displacement sensor is used to stably detect the position information of the moving part 31.
[0042] like Figures 1 to 6As shown, in some embodiments, a monitoring ring 41 is fitted onto the measuring cylinder 2. The monitoring ring 41 is fixed to the movable component 31 and can move up and down along the height direction of the measuring cylinder 2 with the movable component 31. A light source emitter 42 and a light source receiver 43 are respectively arranged on the radial sides of the monitoring ring 41, so that light can pass perpendicularly through the sample inside the measuring cylinder 2, minimizing the refraction and scattering of light and improving the accuracy of measurement. By moving the monitoring ring 41, photoelectric signals at different heights can be acquired in real time, and then the sludge settling ratio can be calculated. To ensure the monitoring effect of the monitoring mechanism 4, the measuring cylinder 2 is a transparent measuring cylinder 2.
[0043] The light source receiver 43 detects the intensity of light passing through the sample in the measuring cylinder 2, and then judges the sludge settling status by the change in photoelectric signal. The light source receiver 43 includes a photoresistor, a photodiode, a photosensitive integrated circuit or a fiber optic sensor, etc. In this embodiment, the light source receiver 43 uses a photoresistor, which is low in cost, highly sensitive and fast in response.
[0044] This embodiment will briefly summarize the monitoring principle of monitoring agency 4 and the calculation of sludge settling ratio. The following summary is only for the purpose of further understanding this scheme. The specific parameter details and the setting of the number of moves can be adjusted according to different needs.
[0045] As we know, a photoresistor is a special resistor made of semiconductor materials. Based on the internal photoelectric effect, the stronger the light, the lower the resistance; the weaker the light, the higher the resistance. The resistance varies with the light intensity, and its readable voltage signal range is 0-10V. The final calculated value of the photoresistor is OUT. .
[0046] Where VL is the lower limit of the photoresistor; VH is the upper limit of the photoresistor; V is the analog signal value of the photoresistor; H is the upper limit of the range; and L is the lower limit of the range.
[0047] Therefore, the voltage signal is linearly mapped to the specified range to obtain the final calculated value OUT of the photoresistor, where OUT is also denoted as Di, and i is the displacement number.
[0048] Then, the moving part 31 is set to move 100 times during the detection process, and the laser displacement sensor moves 100 times. Each movement corresponds to a photoresistor value D1, D2, ..., D100. The adjacent difference of the photoresistor value for each movement is calculated based on the multiple photoresistor values.
[0049] D1, 2=D2-D1; D2, 3=D3-D2; D3, 4=D4-D3; D4, 5=D5-D4;...D99, 100=D100-D99.
[0050] Therefore, the change in the photoresistance value after each displacement can reflect the degree of light attenuation in the sludge layer.
[0051] Then, the differences between adjacent values of the photoresistor are further differentiated to obtain attenuation values Dv1, Dv2, Dv3...Dv98.
[0052] Dv1=D1,2-D2,3; Dv2=D2,3-D3,4; Dv3=D3,4-D4,5;...Dv98=D98,99-D99,100.
[0053] Therefore, by comparing multiple attenuation values, the inflection point of the photoresistance change is obtained, corresponding to the location of the sludge interface. By comparing 98 sets of Dvx data, the maximum value of Dvx and its corresponding index x are found. For example, if Dv30 has the largest value, then X is 30.
[0054] The sludge settling ratio is then calculated using the formula: SV = (x × A) × 100%. Here, SV is the sludge settling ratio; x is the x-value corresponding to the maximum photoresistor attenuation value Dvx; and A is the conversion index between displacement distance and photoresistor strength, which is 1.02 in this embodiment. Therefore, SV = (30 × 1.02) × 100% = 30.6%.
[0055] Based on the above summary, the sludge interface can be located by using an axially moving light source and radial photosensitive detection, combined with the differential method. Finally, the settling ratio can be calculated by the number of displacements and the conversion index. By fitting the sludge height using the rate of change of the optical signal, direct measurement is avoided, and the measurement difficulty is reduced.
[0056] like Figures 1 to 6 As shown, in some embodiments, the sludge settling ratio monitoring device further includes a cleaning mechanism 6. The cleaning mechanism 6 includes a displacement component 61 and an ultrasonic cleaner 62. The displacement component 61 is mounted on the frame 1, and its moving end reciprocates along the height direction of the measuring cylinder 2. The ultrasonic cleaner 62 is mounted on the moving end of the displacement component 61. An opening 21 is provided at the top of the measuring cylinder 2, located on the moving path of the ultrasonic cleaner 62. The ultrasonic cleaner 62 can enter the interior of the measuring cylinder 2 through this opening 21. The displacement component 61 drives the ultrasonic cleaner 62 to rise and fall, thereby continuing to automatically clean the interior of the measuring cylinder 2, removing dirt and residual sludge from the inner wall, ensuring the light transmittance of the measuring cylinder 2, and thus guaranteeing the accuracy of subsequent measurements.
[0057] Furthermore, the displacement component 61 includes a second rotary device 611 disposed on the frame 1. The rotating end of the second rotary device 611 is connected to a drum 612, and a cable 613 is wound on the drum 612. The ultrasonic cleaner 62 is connected to the cable 613. The second rotary device 611 includes a rotary motor or a rotary cylinder, etc. In this embodiment, the second rotary device 611 adopts a second rotary motor. The second rotary motor is detachably fixed to the frame 1 by bolts. The output shaft of the second rotary motor is fixed to the drum 612. The rotation of the output shaft of the second rotary motor drives the rotation of the drum 612, thereby realizing the winding and unwinding of the cable 613 on the drum 612.
[0058] In some embodiments, the measuring cylinder 2 has a first interface 22 at the bottom and a second interface 23 at the top. Liquid can be delivered into the measuring cylinder 2 through the first interface 22, and excess liquid in the measuring cylinder 2 can overflow through the second interface 23 at the top of the measuring cylinder 2. In addition, the first interface 22 can also be used for liquid discharge, which facilitates operation.
[0059] In some embodiments, the frame 1 is provided with at least two graduated cylinders 2, at least two sets of drive mechanisms 3, and at least two sets of monitoring mechanisms 4. The graduated cylinders 2 are spaced apart on the frame 1, and each drive mechanism 3 and each monitoring mechanism 4 corresponds to a respective graduated cylinder 2. Each graduated cylinder 2 is provided with a set of drive mechanisms 3 and a set of monitoring mechanisms 4, thereby enabling the monitoring of the sludge settling ratio within that graduated cylinder 2. By using multiple sets of graduated cylinders 2, the device can process at least two sets of samples simultaneously, improving monitoring efficiency.
[0060] Furthermore, staggering the testing times of each graduated cylinder 2 can further shorten the testing time. For ease of description, we will use two graduated cylinders 2 as an example. One of the graduated cylinders 2 is the first graduated cylinder, and the other is the second graduated cylinder, with each graduated cylinder 2 having a testing time of 30 minutes. For example, if the first graduated cylinder starts testing 15 minutes before the second graduated cylinder starts testing, the sedimentation ratio of the first graduated cylinder can be obtained 15 minutes after the second graduated cylinder begins testing. By doing this, a sedimentation ratio can be obtained every 15 minutes, thereby shortening the testing time. Similarly, when three graduated cylinders 2 are used, a sedimentation ratio can be obtained every 10 minutes, further shortening the testing time.
[0061] like Figures 1 to 6As shown, in some embodiments, the sludge settling ratio monitoring device further includes a housing 7, within which a receiving cavity 71 is provided. The frame 1 is disposed within the receiving cavity 71, and a controller 8 is mounted on the housing 7. The drive mechanism 3 and the monitoring mechanism 4 are both connected to the controller 8. The controller 8 automates the operation of the entire device, including sample injection, measurement, and cleaning, improving operational convenience, reducing human error, and enhancing measurement repeatability and reliability. The controller 8 includes a control box or a control display screen. In this embodiment, the controller 8 uses a control display screen, which is mounted on the housing 7. The control display screen controls the start and stop of each device, controls the start and stop times, and displays the real-time operating status and settling ratio readings.
[0062] In some embodiments, the housing 7 is provided with a drain outlet 72 and an aerobic inlet 73. Each second interface 23 is connected to the drain outlet 72 through an overflow pipe 9. Each first interface 22 is connected to the drain outlet 72 through a drain pipe 10. A drain valve 11 connected to the controller 8 is provided on the drain pipe 10. Each first interface 22 is connected to the aerobic inlet 73 through an aerobic pipe 12. An aerobic valve 13 connected to the controller 8 is provided on the aerobic pipe 12.
[0063] The sample is pumped into the aerobic interface by a water pump. The aerobic valve 13 is opened, and the sample is injected into the measuring cylinder 2. Excess liquid is discharged through the second interface 23 at the top of the measuring cylinder 2 to the overflow pipe 9. After the test is completed, the drain valve 11 is opened, and the sample in the measuring cylinder 2 flows through the first interface 22 at the bottom of the measuring cylinder 2 into the drain pipe 10 and is discharged through the drain port 72.
[0064] Optionally, an interface valve 16 is also provided on the first interface 22. When liquid needs to be transported into the vector cylinder 2, the interface valve 16 needs to be opened to connect with the first interface 22 to avoid misoperation.
[0065] Optionally, the housing 7 is also provided with a water inlet 74, and each of the first interfaces 22 is connected to the water inlet 74 through a water inlet pipe 14. The water inlet pipe 14 is provided with a water inlet valve 15 connected to the controller 8. After the test is completed and the sample in the measuring cylinder 2 is discharged, the water inlet valve 15 is opened, and tap water is delivered into the measuring cylinder 2 through the water inlet 74, the water inlet pipe 14 and the first interface 22. Excess tap water is discharged through the second interface 23. After the tap water is inlet, the second rotator 611 drives the ultrasonic cleaner 62 to rise and fall, so that the ultrasonic cleaner 62 uses vibration to clean the measuring cylinder 2 from top to bottom to ensure light transmission and reading accuracy. After cleaning, the drain valve 11 is opened to drain the water.
[0066] In some embodiments, the housing 7 is provided with an observation window 17 and a side door 18. The side door 18 is rotatably mounted on the housing 7. The observation window 17 facilitates the operator to observe the operating status of the device in real time, and the side door 18 facilitates the maintenance and cleaning of the components inside the housing 7, thereby improving the operability and maintenance convenience of the device.
[0067] like Figures 1 to 6 As shown above, this application provides a sludge settling ratio monitoring device. A sample is pumped into the aerobic inlet 73 by a water pump, and the aerobic valve 13 is opened to allow the sample to enter the measuring cylinder 2. Excess liquid is discharged through the overflow pipe 9, completing the sample introduction process. A laser displacement sensor receives the distance of the moving part 31 to control the start and stop of the first rotator 32, precisely controlling the correspondence between the photoelectric signal reading and the horizontal height, making the settling ratio reading more accurate, and enabling the movement of the moving part 31 and the monitoring mechanism 4. A rotating lead screw 33 is provided on the outside of the measuring cylinder 2, and a light source emitter 42 is mounted on the rotating lead screw 33. A light source receiver 43 is located at the same horizontal position on the other side of the measuring cylinder 2 to read the light source signal, completing the detection during the movement. After the test is completed, the sample in the measuring cylinder 2 is discharged through the drain pipe 10. Tap water is delivered into the measuring cylinder 2 through the inlet 74, the inlet pipe 14 and the first interface 22. Excess tap water is discharged through the second interface 23. After the tap water is inlet, the second rotator 611 drives the ultrasonic cleaner 62 to rise and fall, so that the ultrasonic cleaner 62 uses vibration to clean the measuring cylinder 2 from top to bottom to ensure light transmission and reading accuracy. After cleaning, the drain valve 11 is opened to drain the water, completing the automatic cleaning work.
[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A sludge settling ratio monitoring device, characterized in that, include: A frame (1) on which a measuring cylinder (2) is installed; A drive mechanism (3) is mounted on the frame (1). The movable end of the drive mechanism (3) reciprocates along the height direction of the measuring cylinder (2). A moving part (31) is provided on the movable end. The drive mechanism (3) also includes a detection component (5) for detecting the position information of the moving part (31). The monitoring mechanism (4) includes a monitoring ring (41) fitted on the measuring cylinder (2), the monitoring ring (41) is disposed on the moving part (31), and a light source emitter (42) and a light source receiver (43) are disposed on the monitoring ring (41), the light source receiver (43) and the light source emitter (42) are located on the radial sides of the monitoring ring (41).
2. The sludge settling ratio monitoring device as described in claim 1, characterized in that: The driving mechanism (3) includes a first rotator (32) disposed on the frame (1), a rotating screw (33) disposed on the first rotator (32), the axis of the rotating screw (33) being parallel to the height direction of the measuring cylinder (2), the moving part (31) being threaded through the rotating screw (33), and the detection component (5) being disposed at the top of the rotating screw (33).
3. The sludge settling ratio monitoring device as described in claim 1, characterized in that: It also includes a cleaning mechanism (6), which comprises: A displacement component (61) is disposed on the frame (1), and the moving end of the displacement component (61) reciprocates along the height direction of the measuring cylinder (2); and An ultrasonic cleaner (62) is disposed at the moving end of the displacement component (61); The measuring cylinder (2) has an opening (21) at the top, and the opening (21) is located on the moving path of the ultrasonic cleaner (62).
4. The sludge settling ratio monitoring device as described in claim 3, characterized in that: The displacement component (61) includes a second rotator (611) disposed on the frame (1), the rotating end of the second rotator (611) is connected to a drum (612), a cable (613) is wound on the drum (612), and the ultrasonic cleaner (62) is connected to the cable (613).
5. The sludge settling ratio monitoring device as described in claim 1, characterized in that: The measuring cylinder (2) has a first interface (22) at the bottom and a second interface (23) at the top.
6. The sludge settling ratio monitoring device as described in claim 5, characterized in that: The frame (1) is provided with at least two measuring cylinders (2), at least two sets of driving mechanisms (3) and at least two sets of monitoring mechanisms (4). Each measuring cylinder (2) is spaced apart on the frame (1), and each driving mechanism (3) and each monitoring mechanism (4) corresponds to each measuring cylinder (2).
7. The sludge settling ratio monitoring device as described in claim 6, characterized in that: It also includes a housing (7), which has a receiving cavity (71) inside. The frame (1) is located inside the receiving cavity (71). A controller (8) is provided on the housing (7). The drive mechanism (3) and the monitoring mechanism (4) are both connected to the controller (8).
8. The sludge settling ratio monitoring device as described in claim 7, characterized in that: The box (7) is provided with: A drain outlet (72), each of the second interfaces (23) is connected to the drain outlet (72) via an overflow pipe (9), and each of the first interfaces (22) is connected to the drain outlet (72) via a drain pipe (10). A drain valve (11) connected to the controller (8) is provided on the drain pipe (10); and The aerobic inlet (73) is connected to each of the first interfaces (22) via an aerobic pipe (12). An aerobic valve (13) connected to the controller (8) is provided on the aerobic pipe (12).
9. The sludge settling ratio monitoring device as described in claim 8, characterized in that: The housing (7) is also provided with a water inlet (74), and each of the first interfaces (22) is connected to the water inlet (74) through a water inlet pipe (14). The water inlet pipe (14) is provided with a water inlet valve (15) connected to the controller (8).
10. The sludge settling ratio monitoring device as described in claim 7, characterized in that: The box (7) is provided with an observation window (17) and a side door (18), and the side door (18) is rotatably mounted on the box (7).