Larvae of the genus chironomus

Abstract

The application discloses a kind of underflow treatment devices of settling tank, relate to the technical field such as alumina production, metallurgy, chemical industry, etc., the device includes: underflow pipeline, pneumatic valve, electric valve, concentration detector;The inlet end of underflow pipeline is connected with the bottom outlet of settling tank, pneumatic valve, electric valve and concentration detector are sequentially installed on underflow pipeline.This application improves the shape, structure and combination of underflow treatment device of settling tank, reduces the complexity and maintenance difficulty of the device, also significantly improves the automation level and operating efficiency of the device.

Description

Technical Field

[0001] This application relates to the technical fields of alumina production, metallurgy, and chemical industry. More specifically, this application relates to a settling tank bottom flow treatment device. Background Technology

[0002] With the continuous improvement of the level of intelligence and automation in industrial production, settling tanks, as key equipment for liquid-solid separation, have been widely used in industries such as alumina production, metallurgy, and chemicals. The underflow treatment device of the settling tank, as a core auxiliary equipment, undertakes the important tasks of discharging high-concentration underflow slurry, ensuring solid-liquid separation efficiency, and maintaining stable system operation. However, during long-term, high-intensity operation of the settling tank, problems such as blockage in the underflow pipes, unstable flow, concentration deviation, and equipment wear are prone to occur. If these problems are not addressed in a timely manner, they will directly affect the separation effect of the settling tank, leading to the interruption of the entire production process and resulting in serious economic losses.

[0003] In existing technologies, underflow treatment devices for settling tanks mainly rely on traditional manual operation and simple mechanical adjustment methods. These methods suffer from drawbacks such as poor real-time performance, complex operation, and low control precision, making it difficult to ensure stable discharge and concentration control of the underflow slurry under complex operating conditions. Furthermore, due to the lack of online monitoring and automated adjustment mechanisms, existing devices are insufficient in their ability to respond to emergencies and cannot achieve precise monitoring and intelligent adjustment of the underflow status. In other words, existing treatment devices have not yet fully met the demands of modern industrial production for the stability and efficiency of settling tank operation in terms of automation level, real-time control capabilities, and fault response efficiency, and still suffer from technical problems such as low operating efficiency and poor separation effect. Utility Model Content

[0004] This application introduces a series of simplified concepts in its utility model description section, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] The settling tank bottom flow treatment device provided in this application can reduce the complexity and maintenance difficulty of the device by improving the shape, structure and combination of the settling tank bottom flow treatment device, and also significantly improve the automation level and operating efficiency of the device.

[0006] This application provides a settling tank underflow treatment device, which includes: an underflow pipe, a pneumatic valve, an electric valve, and a concentration detector; the inlet end of the underflow pipe is connected to the bottom outlet of the settling tank, and the pneumatic valve, the electric valve, and the concentration detector are sequentially installed on the underflow pipe.

[0007] In one feasible implementation, the settling tank bottom flow treatment device further includes a time controller; the time controller is connected to the pneumatic valve via a signal line.

[0008] In one feasible implementation, the sedimentation tank underflow treatment device further includes a signal analyzer; the concentration detector is electrically connected to the electric valve via the signal analyzer.

[0009] In one feasible implementation, the underflow treatment device of the settling tank further includes a flow meter; the flow meter is fixed to the underflow pipe by means of a flange connection and is set at the outlet end of the underflow pipe.

[0010] In one feasible implementation, the settling tank underflow treatment device further includes a buffer tank; the buffer tank is disposed at the outlet end of the underflow pipe, and the buffer tank is connected to the underflow pipe.

[0011] In one feasible implementation, the settling tank underflow treatment device further includes a bypass valve; the bypass valve is connected to the underflow pipe through a diversion port of the underflow pipe.

[0012] In one feasible implementation, the underflow treatment device of the settling tank further includes a pressure sensor; the pressure sensor is disposed on the underflow pipe, located at the front end of the pneumatic valve, and connected to the time controller via a signal line.

[0013] In one feasible implementation, the inner wall of the underflow pipe is provided with a corrosion-resistant coating.

[0014] In one feasible implementation, the underflow treatment device of the settling tank further includes a liquid level sensor; the liquid level sensor is installed inside the settling tank and connected to the time controller via a signal line.

[0015] In one feasible implementation, the underflow treatment device of the settling tank further includes a temperature sensor; the temperature sensor is installed by inserting a probe, connected to the underflow pipe, and connected to the time controller via a signal line.

[0016] In summary, the underflow pipeline of this application is directly connected to the bottom outlet of the settling tank, providing a stable transport channel for the high-solids slurry at the bottom of the settling tank; the pneumatic valve achieves periodic discharge of the underflow slurry through rapid opening and closing control, avoiding mud accumulation and unstable flow problems; the electric valve, combined with real-time monitoring data from the concentration detector, dynamically adjusts the flow rate to achieve precise fluid control; the concentration detector, as an important monitoring component of the device, can detect the slurry concentration in real time and optimize flow regulation in conjunction with the valves. In conclusion, the settling tank underflow treatment device provided in this application, through improvements to the shape, structure, and combination of the settling tank underflow treatment device, reduces the complexity and maintenance difficulty of the device, and significantly improves the automation level and operating efficiency of the device. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit this specification. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the sedimentation tank bottom flow treatment device provided in the embodiments of this application.

[0019] In the figure, 10 is the underflow treatment device for the settling tank, 101 is the underflow pipe, 102 is the pneumatic valve, 103 is the electric valve, 104 is the concentration detector, 105 is the flow meter, 106 is the time controller, 107 is the signal analyzer, and 20 is the settling tank. Detailed Implementation

[0020] The technical solutions of this application will be described in detail below with reference to the accompanying drawings of the embodiments. It should be noted that the described embodiments are only a part of this application, and not all embodiments. In the following description, the "some embodiments" mentioned are only a subset of all possible embodiments, which may be the same or different subsets, and different embodiments can be combined with each other without conflict.

[0021] See Figure 1 , Figure 1 This is a schematic diagram of the structure of a sedimentation tank underflow treatment device 10 provided in an embodiment of this application. The sedimentation tank underflow treatment device 10 includes: an underflow pipe 101, a pneumatic valve 102, an electric valve 103, and a concentration detector 104. The inlet end of the underflow pipe 101 is connected to the bottom outlet of the sedimentation tank 20, and the pneumatic valve 102, the electric valve 103, and the concentration detector 104 are sequentially installed on the underflow pipe 101.

[0022] Specifically, the underflow pipe 101 serves as the core fluid channel, with its inlet end directly connected to the bottom outlet of the settling tank 20 via a sealing connection device, ensuring smooth discharge of high-concentration slurry. The pneumatic valve 102, electric valve 103, and concentration detector 104 are installed sequentially along the underflow pipe 101, forming an integrated control link from rapid flow control to precise concentration adjustment. The pneumatic valve 102 is used to realize the periodic rapid opening and closing operation of the underflow slurry, the electric valve 103 is responsible for precise flow adjustment based on real-time concentration data, and the concentration detector 104 provides feedback signals to optimize control parameters by monitoring the slurry concentration in real time.

[0023] In summary, the underflow pipe 101 of this embodiment is directly connected to the bottom outlet of the settling tank 20, providing a stable transport channel for the high-solids slurry at the bottom of the settling tank 20; the pneumatic valve 102 achieves periodic discharge of the underflow slurry through rapid opening and closing control, avoiding mud accumulation and unstable flow problems; the electric valve 103, combined with the real-time monitoring data of the concentration detector 104, dynamically adjusts the flow rate to achieve precise fluid control; the concentration detector 104, as an important monitoring component of the device, can detect the slurry concentration in real time and optimize flow regulation in conjunction with the valve. In summary, the settling tank underflow treatment device 1010 provided in this embodiment, through improvements to the shape, structure, and combination of the settling tank underflow treatment device 10, reduces the complexity and maintenance difficulty of the device, and significantly improves the automation level and operating efficiency of the device.

[0024] In some embodiments, the sedimentation tank bottom flow treatment device 10 further includes a time controller 106; the time controller 106 is connected to the pneumatic valve 102 via a signal line.

[0025] Specifically, the time controller 106 is connected to the pneumatic valve 102 via a signal line. Its function is to control the pneumatic valve 102 according to preset time parameters to ensure that the discharge of the underflow slurry can be carried out in a periodic and stable manner. Through this design, the quantitative periodic discharge of slurry can be achieved without manual intervention, effectively avoiding the blockage or mud accumulation problems that may occur in the underflow pipe 101 due to long-term operation.

[0026] In some embodiments, the sedimentation tank underflow treatment device 10 further includes a signal analyzer 107; a concentration detector 104 is electrically connected to an electric valve 103 via the signal analyzer 107.

[0027] Specifically, the concentration detector 104 is installed on the underflow pipe 101 to detect the concentration of the slurry in real time and transmits the data to the signal analyzer 107 via electrical connection. The signal analyzer 107 analyzes and processes the detection data with its built-in digital processing module and generates corresponding control signals based on the analysis results to precisely adjust the opening of the electric valve 103.

[0028] Through the implementation of the above embodiments, the signal analyzer 107, as an intermediate processing node, not only simplifies the signal transmission logic between the concentration detector 104 and the electric valve 103, but also enhances the accuracy and real-time performance of the control signal, making the adjustment of the electric valve 103 more flexible and able to quickly respond to changes in slurry concentration, ensuring the stability of the bottom flow concentration in the settling tank; at the same time, the compact combination of the signal analyzer 107 with other components makes the overall structure of the device more reasonable, reduces the wiring complexity and space occupation of the device, and improves the integration and reliability of the equipment.

[0029] In some embodiments, the sedimentation tank underflow treatment device 10 further includes a flow meter 105; the flow meter 105 is fixed to the underflow pipe 101 by means of a flange connection and is disposed at the outlet end of the underflow pipe 101.

[0030] Specifically, the sedimentation tank underflow treatment device 10 adds a flow meter 105 to the outlet end of the underflow pipe 101 and fixes it with a flange connection. The flow meter 105 and the underflow pipe 101 form a stable and sealed connection, which ensures the stability of flow data measurement and avoids leakage or loosening problems that may be caused by traditional connection methods.

[0031] Through the implementation of the above embodiments, the flow meter 105 is installed at the outlet end of the underflow pipe 101. Its position is optimized so that the slurry flow can be accurately monitored with minimal flow interference. At the same time, the introduction of the flange connection method makes the disassembly and maintenance of the sedimentation tank underflow treatment device 10 more convenient, further improving the operability and service life of the equipment.

[0032] In some embodiments, the settling tank underflow treatment device 10 further includes a buffer tank; the buffer tank is disposed at the outlet end of the underflow pipe 101, and the buffer tank is connected to the underflow pipe 101.

[0033] Specifically, in order to further optimize the slurry conveying and processing, the underflow treatment device 10 of the settling tank is equipped with a buffer tank, which is located at the outlet end of the underflow pipe 101. The buffer tank is designed to store and regulate the underflow slurry for a short time to ensure the stability of the flow rate and pressure of the slurry when it enters the subsequent process. The buffer tank is connected to the outlet end of the underflow pipe 101 by a flange or quick clamp, and the interface is equipped with a corrosion-resistant sealing gasket to ensure the reliability and sealing of the connection.

[0034] In some embodiments, the settling tank underflow treatment device 10 further includes a bypass valve; the bypass valve is connected to the underflow pipe 101 through the diversion interface of the underflow pipe 101.

[0035] Specifically, the main function of the bypass valve is to provide a backup fluid channel when the underflow treatment device 10 of the settling tank malfunctions or requires adjustment. This allows the underflow slurry to continue to be discharged or enter other treatment stages through the bypass, preventing the settling tank underflow treatment device 10 from shutting down due to blockage or failure of the main channel. The interface between the bypass valve and the underflow pipeline 101 can be fixed with flanges or quick clamps and equipped with corrosion-resistant seals to ensure no leakage risk during the transportation of high-concentration slurry. By integrating the bypass valve into the settling tank underflow treatment device 10, the emergency response capability and system reliability of the device can be improved.

[0036] In some embodiments, the sedimentation tank underflow treatment device 10 further includes a pressure sensor; the pressure sensor is disposed on the underflow pipe, located at the front end of the pneumatic valve 102, and connected to the time controller 106 via a signal line.

[0037] Specifically, the main function of the pressure sensor is to monitor the pressure changes in the underflow pipe 101 in real time and transmit the data to the time controller 106. By monitoring the pressure data, the time controller 106 can determine the working status of the system and adjust the pneumatic valve 102 to ensure the stability of the slurry flow and the safe operation of the equipment. The pressure sensor, installed at the front end of the pneumatic valve 102, can accurately measure fluid pressure fluctuations and detect abnormal pressure changes in a timely manner, such as blockage, leakage or equipment failure.

[0038] In some embodiments, the inner wall of the underflow pipe 101 is provided with a corrosion-resistant coating.

[0039] Specifically, in order to enhance the durability and corrosion resistance of the underflow pipe 101, the inner wall of the underflow pipe 101 of the settling tank underflow treatment device 10 can be provided with a corrosion-resistant coating. The corrosion-resistant coating can be made of chemically resistant materials, such as polytetrafluoroethylene (PTFE) or fluorocarbon coating, which can effectively resist the erosion of alkaline substances and solid particles in high-concentration slurry. The coating thickness can be between 0.5-1.5 mm, which ensures corrosion resistance without affecting the fluid dynamics performance of the pipe.

[0040] By adding a corrosion-resistant coating to the inner wall of the underflow pipe 101, the service life of the underflow pipe 101 is effectively extended, and maintenance costs caused by corrosion and wear are reduced.

[0041] In some embodiments, the settling tank underflow treatment device 10 further includes a liquid level sensor; the liquid level sensor is installed inside the settling tank 20 and connected to the time controller 106 via a signal line.

[0042] Specifically, the main function of the liquid level sensor is to monitor the changes in the liquid level of the slurry in the settling tank 20 in real time and transmit the data to the time controller 106. The liquid level sensor can accurately detect the height of the liquid level, helping the time controller 106 to determine the accumulation of liquid in the settling tank 20, thereby effectively controlling the opening and closing state of the pneumatic valve 102. Based on the information fed back by the liquid level sensor, the time controller 106 can automatically adjust the flow of slurry in the underflow pipe 101 to keep the liquid level in the settling tank within a predetermined range, avoiding excessive water accumulation or excessively low liquid levels, thereby ensuring the stable operation of the settling tank underflow treatment device 10.

[0043] In some embodiments, the sedimentation tank underflow treatment device 10 further includes a temperature sensor; the temperature sensor is installed by inserting a probe, connected to the underflow pipe 101, and connected to the time controller 106 via a signal line.

[0044] Specifically, the temperature sensor measures temperature by inserting a probe into the underflow pipe 101. The connection between the probe and the underflow pipe 101 is sealed to ensure the sealing and accuracy of the measurement point. The temperature sensor's measurement range can adapt to temperature changes under various operating conditions in the settling tank underflow treatment device 10. Through connection with the time controller 106, the temperature sensor can transmit the measured temperature data in real time, allowing the time controller 106 to adjust the pneumatic valve 102 based on this data to adapt to the flow characteristics of the slurry at different temperatures. In other words, by integrating the temperature sensor, the settling tank underflow treatment device 10 can automatically adjust the equipment's operating status according to real-time temperature changes, ensuring that the flowability and concentration of the underflow slurry remain stable, and avoiding a decrease in processing efficiency or equipment damage due to temperature fluctuations.

[0045] To verify the actual effect of the embodiments of this application, the process of the settling tank bottom flow treatment device 10 of the embodiments of this application is compared with the process of not using the settling tank bottom flow treatment device 10 of the embodiments of this application. The operating indicators of the two are as follows:

[0046] Table 1 Comparison of Process Applications

[0047]

[0048]

[0049] As shown in the table above, without the use of the settling tank underflow treatment device 10, the average Na2O content in the red mud filtrate was 16.6 g / L. However, after using the settling tank underflow treatment device 10, this index decreased to 13.8 g / L. Statistical results show that the Na2O content in the red mud filtrate is significantly reduced after adopting the process of this invention, by approximately 17% compared to the traditional process. This result indicates that the settling tank underflow treatment device 10 not only effectively improves the liquid-solid separation efficiency but also reduces alkali loss, demonstrating a significant optimization effect on production economy.

[0050] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A settling tank bottom flow treatment device, characterized in that, include: Underflow pipes, pneumatic valves, electric valves, concentration detectors, time controllers, and signal analyzers; The inlet end of the underflow pipe is connected to the bottom outlet of the settling tank, and the pneumatic valve, the electric valve and the concentration detector are installed on the underflow pipe in sequence. The time controller is connected to the pneumatic valve via a signal line; The concentration detector is electrically connected to the electric valve via the signal analyzer.

2. The settling tank bottom flow treatment device according to claim 1, characterized in that, The settling tank underflow treatment device also includes a flow meter; The flow meter is fixed to the underflow pipe by means of a flange connection and is set at the outlet end of the underflow pipe.

3. The apparatus according to claim 1, characterized in that, The settling tank underflow treatment device also includes a buffer tank; The buffer tank is located at the outlet end of the underflow pipe, and the buffer tank is connected to the underflow pipe.

4. The apparatus according to claim 1, characterized in that, The settling tank underflow treatment device also includes a bypass valve; The bypass valve is connected to the underflow pipe through the diversion port of the underflow pipe.

5. The apparatus according to claim 1, characterized in that, The settling tank underflow treatment device also includes a pressure sensor; The pressure sensor is installed on the underflow pipe, located at the front end of the pneumatic valve, and is connected to the time controller via a signal line.

6. The settling tank bottom flow treatment device according to claim 1, characterized in that, The inner wall of the underflow pipe is coated with a corrosion-resistant coating.

7. The apparatus according to claim 1, characterized in that, The settling tank underflow treatment device also includes a liquid level sensor; The liquid level sensor is installed inside the settling tank and connected to the time controller via a signal line.

8. The apparatus according to claim 1, characterized in that, The settling tank underflow treatment device also includes a temperature sensor; The temperature sensor is installed by inserting a probe into the underflow pipe and is connected to the time controller via a signal line.

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