Sludge level detection device for sedimentation tank
By designing a sedimentation tank sludge level detection device that utilizes sludge concentration meter and automated sampling control, the problem that existing ultrasonic sludge level meter cannot accurately detect the mud-water separation interface is solved, achieving higher detection accuracy and lower operating costs.
Patent Information
- Application Number
- CN202421628312.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-10
AI Technical Summary
When detecting the mud position of the sedimentation tank, the existing ultrasonic mud level gauge cannot accurately determine the true location of the mud-water separation interface, resulting in premature discharge of mud by sewage operators and increasing operating costs. At the same time, the installation and operation conditions are harsh, and they are susceptible to the influence of algae and impurities, resulting in inaccurate monitoring data.
A sludge level detection device for sedimentation tank is designed, and the sludge concentration meter and sludge concentration detection box are used to detect the sludge concentration at different heights in the sedimentation tank. Through the automatic control of the sampling branch pipe, tap water pipe and drain pipe, automatic sampling and flushing are achieved, and the detection accuracy is improved.
The accuracy of mud level detection in the sedimentation tank is improved, multiple rows of diluted mud and water mixture are avoided, operating costs are reduced, and the accuracy of the detection data and convenient maintenance are ensured through automated control.
Smart Images
Figure CN222804755U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of sedimentation tank mud level detection, in particular to a sedimentation tank mud level detection device. Background Art
[0002] The sewage treatment process involves the use of biological sludge to treat pollutants in sewage. The subsequent process of biological sludge treatment requires the use of sedimentation tanks to separate solids and liquids. The separated supernatant is the tail water that meets the treatment standards. Sedimentation tanks generally use physical natural sedimentation. The sludge settles to the bottom of the tank within a certain period of time, forming a mud-water separation interface in the sedimentation tank. The upper layer is the sedimentation supernatant that meets the standards and enters the next stage of treatment. The lower layer is the sludge sedimentation layer, which needs to be discharged for treatment.
[0003] Therefore, the sedimentation tank needs to be equipped with equipment to monitor the condition of the settled sludge. The height of the sludge accumulation can be determined based on the position of the mud-water separation interface of the tank body from the bottom of the tank, so as to decide whether to discharge the settled sludge.
[0004] Conventional ultrasonic mud level meters have the following defects during operation: 1. Ultrasonic mud level meters are generally submerged in water and use ultrasonic rebound to detect the position of the underwater mud-water separation interface. However, the sludge concentration of the settled sludge increases from top to bottom. The sludge concentration layer is formed due to gravity compression below the mud-water separation interface. There is still a sludge transition layer of a certain height above the mud-water separation interface. Although the sludge transition layer is settled sludge, the sludge does not meet the sludge discharge requirements. Therefore, due to the influence of the sludge transition layer, the ultrasonic mud level detected by the ultrasonic mud level meter cannot correctly judge the true position of the mud-water separation interface, which causes the sewage operator to discharge the sludge prematurely and a large amount of diluted mud-water mixture is discharged, which increases the subsequent sludge dehydration work and increases the operating cost.
[0005] 2. The installation requirements of ultrasonic mud level meter are strict. The ultrasonic probe sensor must be kept perpendicular to the mud surface and the bottom of the pool. If the installation angle is offset, the monitoring data cannot truly reflect the mud level of the sedimentation tank. At the same time, there must be no obstacles in the transmitting surface directly below the probe to avoid the ultrasonic signal being blocked and reflected. The probe should also be installed away from the water inlet and outlet to reduce the impact of water flow on the measurement.
[0006] 3. The operating conditions of ultrasonic mud level meter are relatively harsh. The ultrasonic probe should be installed away from gas bubbles and active floating solids caused by sudden changes in flow rate. That is, large floating objects and bubbles should be avoided around the probe to prevent the ultrasonic wave from being blocked and affecting the detection results. However, when the sedimentation tank is actually in operation, algae and impurities brought from the previous stage of the biochemical pool will inevitably grow and mix in. These objects will always affect the monitoring of the mud level meter, resulting in inaccurate monitoring data. Utility Model Content
[0007] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a sedimentation tank mud level detection device.
[0008] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:
[0009] A sedimentation tank mud level detection device comprises a sedimentation tank, a sludge concentration meter, and a sludge concentration detection box, wherein the sludge concentration meter and the sludge concentration detection box are located on one side of the outside of the sedimentation tank, and N sampling branch pipes arranged in sequence from bottom to top are installed on the wall of the sedimentation tank, and a sampling control electric valve for controlling the on-off of the sampling branch pipe is installed on each of the sampling branch pipes, and a sampling tube is installed on the sludge concentration detection box, and the sampling tubes are respectively connected with the N sampling branch pipes; the sludge concentration detection probe of the sludge concentration meter is installed in the sludge concentration detection box, and two groups of water spray mechanisms for flushing the sludge concentration detection box are installed on the upper part of the sludge concentration detection box, and the two groups of water spray mechanisms are symmetrically arranged, and an emptying pipe is installed at the bottom of the sludge concentration detection box, and an emptying control electric valve for controlling the on-off of the emptying pipe is installed on the emptying pipe.
[0010] Among them, the N is 4, and the 4 sampling branch pipes are the first sampling branch pipe, the second sampling branch pipe, the third sampling branch pipe, and the fourth sampling branch pipe from bottom to top. The height difference between the first sampling branch pipe and the upper edge of the inner bottom of the sedimentation tank is 0m, the height difference between the second sampling branch pipe and the upper edge of the inner bottom of the sedimentation tank is 1.5m, the height difference between the third sampling branch pipe and the upper edge of the inner bottom of the sedimentation tank is 2.5m, and the height difference between the fourth sampling branch pipe and the upper edge of the inner bottom of the sedimentation tank is 3.5m.
[0011] Among them, the water spraying mechanism includes a tap water pipe and a nozzle. One end of the tap water pipe extends into the sludge concentration detection box, and the nozzle is installed at one end of the tap water pipe located in the sludge concentration detection box. After each detection, the nozzle flushes the box body and the sludge concentration meter probe. The tap water pipe is installed with a tap water control electric valve for controlling the on and off of the tap water pipe to discharge the flushing water.
[0012] The tap water pipe is provided with a tap water control electric valve for controlling the on and off of the tap water pipe.
[0013] Among them, an overflow port is arranged on one side of the upper part of the sludge concentration detection box, the overflow port is connected with the end of the emptying pipe away from the sludge concentration detection box through an overflow pipe, and the emptying control electric valve is located between the overflow pipe and the sludge concentration detection box.
[0014] The height difference between the overflow port and the bottom of the sludge concentration detection box is 0.9 m, and the height difference between the top of the sludge concentration detection probe and the bottom of the sludge concentration detection box is less than 0.9 m.
[0015] A box cover is hinged at the top of the sludge concentration detection box, a through hole is opened at the center of the box cover, and the sludge concentration detection probe is suspended downward from the through hole and installed in the sludge concentration detection box.
[0016] Wherein, the top of the sludge concentration detection box is lower than the upper edge of the inner bottom of the sedimentation tank.
[0017] The beneficial effects of the utility model are as follows: the sludge concentration meter is used to detect the sludge concentration at different heights in the sedimentation tank to determine the true position of the sludge sedimentation and concentration layer of the sedimentation tank, thereby improving the accuracy of mud level detection in the sedimentation tank and avoiding multiple rows of diluted mud-water mixture; the sampling branch pipe, the tap water pipe and the emptying pipe are all controlled by an electric valve, which can automatically sample and automatically flush the inside of the sludge box to ensure the accuracy of each detection data, and can be remotely controlled at the same time; the sludge concentration meter and the sludge concentration detection box are located on one side of the outside of the sedimentation tank, which is convenient for maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0019] Figure 1 It is a structural schematic diagram of a sedimentation tank mud level detection device in the utility model;
[0020] Figure 2 It is a schematic diagram of the structure of the sedimentation tank mud level detection device in the utility model without the sedimentation tank;
[0021] Explanation of the numbers in the figure: sedimentation tank 1, sludge concentration meter 2, sludge concentration detection box 3, box cover 31, through hole 32, sampling tube 4, first sampling branch pipe 51, second sampling branch pipe 52, third sampling branch pipe 53, fourth sampling branch pipe 54, sampling control electric valve 55, water spraying mechanism 6, tap water pipe 61, nozzle 62, tap water control electric valve 63, drain pipe 7, drain control electric valve 71, overflow pipe 8. DETAILED DESCRIPTION
[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0023] like Figure 1 and Figure 2As shown, a sedimentation tank mud level detection device includes a sedimentation tank 1, a sludge concentration meter 2, and a sludge concentration detection box 3. The sludge concentration meter 2 and the sludge concentration detection box 3 are located on one side of the outside of the sedimentation tank 1, and the top of the sludge concentration detection box 3 is lower than the upper edge of the inner bottom of the sedimentation tank 1.
[0024] Four sampling branches arranged from bottom to top are installed on the wall of the sedimentation tank 1, and a sampling control electric valve 55 for controlling the on-off of the sampling branch is installed on each sampling branch. A sampling tube 4 is installed on the sludge concentration detection box 3, and the sampling tube 7 is connected to the four sampling branches 51 respectively.
[0025] The four sampling branch pipes are, from bottom to top, the first sampling branch pipe 51, the second sampling branch pipe 52, the third sampling branch pipe 53, and the fourth sampling branch pipe 54. The height difference between the first sampling branch pipe 51 and the upper edge of the inner bottom of the sedimentation tank 1 is 0m, the height difference between the second sampling branch pipe 52 and the upper edge of the inner bottom of the sedimentation tank 1 is 1.5m, the height difference between the third sampling branch pipe 53 and the upper edge of the inner bottom of the sedimentation tank 1 is 2.5m, and the height difference between the fourth sampling branch pipe 54 and the upper edge of the inner bottom of the sedimentation tank 1 is 3.5m.
[0026] The sludge concentration detection probe 21 of the sludge concentration meter 2 is installed in the sludge concentration detection box 3, and the height difference between the top of the sludge concentration detection probe 3 and the bottom of the sludge concentration detection box 3 is less than 0.9m. Specifically, a box cover 31 is hinged at the top of the sludge concentration detection box 3, and a through hole 32 is opened in the center of the box cover 31. The sludge concentration detection probe 21 is suspended downward from the through hole 32 and installed in the sludge concentration detection box 3.
[0027] Two groups of water spray mechanisms 6 for flushing the sludge concentration detection box 3 are installed on the upper part of the sludge concentration detection box 3. The two groups of water spray mechanisms 6 are symmetrically arranged. The water spray mechanism 6 includes a tap water pipe 61 and a nozzle 62. One end of the tap water pipe 61 extends into the sludge concentration detection box 3. The nozzle 62 is installed at one end of the tap water pipe 61 located in the sludge concentration detection box 3. A tap water control electric valve 63 for controlling the on and off of the tap water pipe is installed on the tap water pipe 61.
[0028] An emptying pipe 7 is installed at the bottom of the sludge concentration detection box 3 , and an emptying control electric valve 71 for controlling the opening and closing of the emptying pipe 7 is installed on the emptying pipe 7 .
[0029] An overflow port is provided on one side of the upper part of the sludge concentration detection box 3. The height difference between the overflow port and the bottom of the sludge concentration detection box 3 is 0.9m. The overflow port is connected to the end of the emptying pipe 7 away from the sludge concentration detection box 3 through the overflow pipe 8. The emptying control electric valve 71 is located between the overflow pipe 8 and the sludge concentration detection box 3.
[0030] The sludge concentration meter is used to detect the sludge concentration at different heights in the sedimentation tank to determine the true position of the sludge sedimentation and concentration layer in the sedimentation tank, thereby improving the accuracy of mud level detection in the sedimentation tank and avoiding multiple rows of diluted mud-water mixture; the sampling branch pipe, tap water pipe and emptying pipe are all controlled by electric valves, which can automatically sample and automatically flush the inside of the sludge box to ensure the accuracy of each test data, and can also be remotely controlled; the sludge concentration meter and sludge concentration detection box are located on one side of the outside of the sedimentation tank for easy maintenance.
[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A sedimentation tank mud level detection device, characterized in that: It includes a sedimentation tank, a sludge concentration meter, and a sludge concentration detection box. The sludge concentration meter and the sludge concentration detection box are located on one side of the outside of the sedimentation tank. N sampling branch pipes arranged in sequence from bottom to top are installed on the wall of the sedimentation tank. A sampling control electric valve for controlling the on-off of the sampling branch pipe is installed on each of the sampling branch pipes. A sampling tube is installed on the sludge concentration detection box, and the sampling tubes are connected with the N sampling branch pipes respectively; the sludge concentration detection probe of the sludge concentration meter is installed in the sludge concentration detection box, and two groups of water spray mechanisms for flushing the sludge concentration detection box are installed on the upper part of the sludge concentration detection box, and the two groups of water spray mechanisms are symmetrically arranged. An emptying pipe is installed at the bottom of the sludge concentration detection box, and an emptying control electric valve for controlling the on-off of the emptying pipe is installed on the emptying pipe.
2. The sedimentation tank mud level detection device according to claim 1, characterized in that: The N is 4, and the 4 sampling branch pipes are the first sampling branch pipe, the second sampling branch pipe, the third sampling branch pipe, and the fourth sampling branch pipe from bottom to top. The height difference between the first sampling branch pipe and the upper edge of the inner bottom of the sedimentation tank is 0m, the height difference between the second sampling branch pipe and the upper edge of the inner bottom of the sedimentation tank is 1.5m, the height difference between the third sampling branch pipe and the upper edge of the inner bottom of the sedimentation tank is 2.5m, and the height difference between the fourth sampling branch pipe and the upper edge of the inner bottom of the sedimentation tank is 3.5m.
3. The sedimentation tank mud level detection device according to claim 1 is characterized in that: The water spray mechanism includes a water pipe and a nozzle. One end of the water pipe extends into the sludge concentration detection box. The nozzle is installed at one end of the water pipe located in the sludge concentration detection box. A water control electric valve for controlling the on and off of the water pipe is installed on the water pipe.
4. The sedimentation tank mud level detection device according to claim 1, characterized in that: An overflow port is arranged on one side of the upper part of the sludge concentration detection box, and the overflow port is connected with the end of the emptying pipe away from the sludge concentration detection box through the overflow pipe, and the emptying control electric valve is located between the overflow pipe and the sludge concentration detection box.
5. The sedimentation tank mud level detection device according to claim 4, characterized in that: The height difference between the overflow port and the bottom of the sludge concentration detection box is 0.9 m, and the height difference between the top of the sludge concentration detection probe and the bottom of the sludge concentration detection box is less than 0.9 m.
6. The sedimentation tank mud level detection device according to claim 1, characterized in that: A box cover is hinged at the top of the sludge concentration detection box, a through hole is opened at the center of the box cover, and the sludge concentration detection probe is suspended downward from the through hole and installed in the sludge concentration detection box.
7. The sedimentation tank mud level detection device according to claim 1, characterized in that: The top of the sludge concentration detection box is lower than the upper edge of the inner bottom of the sedimentation tank.