Interface detection system of settling tank and settling tank

Abstract

The invention discloses an interface detection system of a settling tank and the settling tank, and the system comprises a liquid detector arranged outside the settling tank; an inlet of the first pipeline is movably arranged in the settling liquid of the settling tank, and an outlet of the first pipeline is arranged outside the settling tank; the lifting assembly is arranged above the settling tank and used for driving an inlet of the first pipeline to move up and down, and the first pipeline is hung on the lifting assembly; one end of the siphon starting assembly is connected with the outlet of the first pipeline, and the other end of the siphon starting assembly is connected with the inlet of the liquid detector. According to the invention, the technical problem of low timeliness of tank condition adjustment of the settling tank is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of alumina production, and particularly relates to an interface detection system for a settling tank and a settling tank. Background Art

[0002] The settling tank is the main equipment in the red mud separation and washing process during alumina production. It has the advantages of simple structure, easy operation, and long operation cycle. The height of the clear liquid layer and the height of the mud layer are important indicators characterizing the operation state of the settling tank. During the production process, it is necessary to ensure that the settling tank is in a balanced state. If the clear liquid layer in the settling tank is too low or unstable, it will cause overflow and muddy water, affecting normal production.

[0003] Currently, the measurement of the interface height between the clear liquid layer and the mud layer in the settling tank usually relies on manual operation. This measurement method not only has a large labor intensity, but also the analysis results are lagging, reducing the timeliness of adjusting the condition of the settling tank, resulting in the phenomenon of unstable operation of the settling tank occurring from time to time and low product quality. Therefore, the low timeliness of adjusting the condition of the settling tank is a technical problem to be solved urgently. Summary of the Invention

[0004] The embodiments of the present invention provide an interface detection system for a settling tank and a settling tank, which solve the technical problem of low timeliness of adjusting the condition of the settling tank.

[0005] In a first aspect, the embodiments of the present invention provide an interface detection system for a settling tank, including: a liquid detector, arranged outside the settling tank; a first pipeline, the inlet of the first pipeline is movably arranged in the settling liquid of the settling tank, and the outlet of the first pipeline is arranged outside the settling tank; a lifting assembly, arranged above the settling tank, used to drive the inlet of the first pipeline to move up and down, and the first pipeline is suspended on the lifting assembly; a siphon starting assembly, one end of the siphon starting assembly is connected to the outlet of the first pipeline, and the other end of the siphon starting assembly is connected to the inlet of the liquid detector.

[0006] In combination with the first aspect of the present invention, in some embodiments, the siphon starting assembly includes: a vacuum pump; a three-way valve, the inlet of the three-way valve is connected to the outlet of the first pipeline, the first outlet of the three-way valve is connected to the inlet of the liquid detector, and the second outlet of the three-way valve is connected to the vacuum pump.

[0007] In combination with the first aspect of the present invention, in some embodiments, the lifting assembly includes: a rotating device, the rotating device includes a roller, the rotating shaft of the roller is parallel to the surface of the settling liquid, and the first pipeline is wound around the side of the roller; a support rod, the first end of the support rod is connected to the rotating device.

[0008] In connection with the first aspect of the present invention, in some embodiments, the rotating device further includes: a motor and a chain; a first gear, the central hole of the first gear is fixedly connected to the output shaft of the motor, and the first gear is meshed and connected to one end of the chain; a second gear, disposed on the end face of the roller, and the central axis of the central hole of the second gear coincides with the rotation axis of the roller, and the second gear is meshed and connected to the other end of the chain.

[0009] In connection with the first aspect of the present invention, in some embodiments, the second end of the support rod is disposed on the ground; or the second end of the support rod is disposed on the side wall or the top of the settling tank.

[0010] In connection with the first aspect of the present invention, in some embodiments, it further includes: a buffer tank; a second pipeline, the inlet of the second pipeline is connected to the outlet of the liquid detector, and the outlet of the second pipeline faces the inside of the buffer tank.

[0011] In connection with the first aspect of the present invention, in some embodiments, it further includes: a counterweight block, disposed outside the pipeline at the inlet of the first pipeline.

[0012] In connection with the first aspect of the present invention, in some embodiments, the first pipeline is a rubber pipe, the motor is a three-phase motor, and the liquid detector is an optical detector.

[0013] In connection with the first aspect of the present invention, in some embodiments, the position of the outlet of the first pipeline is fixed, and the height of the outlet of the first pipeline is 0.1 meter to 50 meters lower than the height of the surface of the settling liquid in the settling tank.

[0014] In a second aspect, an embodiment of the present invention provides a settling tank, including the interface detection system of the settling tank according to any one of the first aspect.

[0015] One or more technical solutions provided by the embodiments of the present invention at least achieve the following technical effects or advantages:

[0016] An interface detection system for a settling tank provided by an embodiment of the present invention includes: a liquid detector disposed outside the settling tank; a first pipeline, the inlet of the first pipeline is movably disposed in the settling liquid of the settling tank, and the outlet of the first pipeline is disposed outside the settling tank; a lifting assembly disposed above the settling tank for driving the inlet of the first pipeline to move up and down, and the first pipeline is suspended on the lifting assembly; a siphon starting assembly, one end of the siphon starting assembly is connected to the outlet of the first pipeline, and the other end of the siphon starting assembly is connected to the inlet of the liquid detector. Since the lifting assembly can drive the inlet of the first pipeline to move up and down, the settling liquid at different heights in the settling tank can be siphoned to the liquid detector, and then the liquid detector analyzes the settling liquid to determine whether the settling liquid belongs to the clear liquid layer or the mud layer, thereby determining whether the height where the inlet of the first pipeline is located belongs to the clear liquid layer or the mud layer, and thus the height of the clear liquid layer and the height of the mud layer in the settling tank can be determined, avoiding manual operation to measure the height of the clear liquid layer and the height of the mud layer, improving the measurement efficiency, and enabling technicians to timely adjust the condition of the settling tank according to the actual situation. Therefore, the timeliness of adjusting the condition of the settling tank is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Schematic diagram of the interface detection system for the settling tank in the embodiment of the present invention;

[0019] Figure 2 Schematic diagrams of different states of the three-way valve in the embodiment of the present invention;

[0020] Figure 3 is Figure 1 Detail schematic diagram of the interface detection system for the settling tank in

[0021] Figure 4 Connection schematic diagram of the first gear, chain and second gear in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] In the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] Figure 1 This is a schematic diagram of the interface detection system of the settling tank in the embodiment of the present invention. Refer to Figure 1 As shown, an interface detection system for a settling tank provided in an embodiment of the present invention includes: a liquid detector 10, disposed outside the settling tank; a first pipeline 20, the inlet of the first pipeline 20 is movably disposed in the settling liquid of the settling tank, and the outlet of the first pipeline 20 is disposed outside the settling tank; a lifting assembly 30, disposed above the settling tank, for driving the inlet of the first pipeline 20 to move up and down, and the first pipeline 20 is suspended on the lifting assembly 30; a siphon start assembly 40, one end of the siphon start assembly 40 is connected to the outlet of the first pipeline 20, and the other end of the siphon start assembly 40 is connected to the inlet of the liquid detector 10.

[0025] It should be noted that during the siphon process, the flow direction of the settling liquid in the settling tank is successively the settling tank, the first pipeline 20, the siphon start assembly 40, and the liquid detector 10. Additionally, if the liquid detector 10 is a closed system, then the installation order of the siphon start assembly 40 and the liquid detector 10 can be swapped. At this time, the flow direction of the settling liquid in the settling tank is successively the settling tank, the first pipeline 20, the liquid detector 10, and the siphon start assembly 40.

[0026] In some embodiments, the siphon start assembly 40 may include: a vacuum pump; a three-way valve, the inlet of the three-way valve is connected to the outlet of the first pipeline 20, the first outlet of the three-way valve is connected to the inlet of the liquid detector 10, and the second outlet of the three-way valve is connected to the vacuum pump.

[0027] Refer to Figure 2 As shown, Figure 2 This is a schematic diagram of different states of the three-way valve in the embodiment of the present invention. In the initial stage of siphon, the inlet of the three-way valve is connected to the second outlet of the three-way valve. At this time, the vacuum pump is started, and the gas inside the first pipeline 20 can be pumped out to start the siphon process. After the siphon process is started, the inlet of the three-way valve is connected to the first outlet of the three-way valve, that is, the first outlet of the three-way valve is connected to the inlet of the liquid detector 10, and the settling liquid flows into the liquid detector 10.

[0028] In some embodiments, the lifting assembly 30 may include: a rotating device including a roller 310, the rotation axis of the roller 310 being parallel to the surface of the sedimentation liquid, and the first pipe 20 being wound around the side surface of the roller 310; and a support rod 320, the first end of the support rod 320 being connected to the rotating device.

[0029] Reference Figure 3 shown in Figure 3 is Figure 1 a detailed schematic diagram of the interface detection system of the sedimentation tank in

[0030] In some embodiments, the rotating device may further include: a motor and a chain 330; a first gear 340, the central hole of the first gear 340 being fixedly connected to the output shaft of the motor, and the first gear 340 being meshed with one end of the chain 330; and a second gear 350, disposed on the end face of the roller 310, and the central axis of the central hole of the second gear 350 coinciding with the rotation axis of the roller 310, and the second gear 350 being meshed with the other end of the chain 330.

[0031] It should be noted that the rotation direction and angle of the motor can be manually controlled or can be self-controlled by data analysis software.

[0032] Reference Figure 4 shown in Figure 4 is a connection schematic diagram of the first gear 340, the chain 330 and the second gear 350 in an embodiment of the present invention. The motor can drive the first gear 340 to rotate. The first gear 340 drives the second gear 350 through the chain 330, and the second gear 350 drives the roller 310. Also, since the first pipe 20 is wound around the roller 310, the rotation of the roller 310 can drive the inlet of the first pipe 20 to move up and down. In addition, the number of rotations of the output shaft of the motor can be used to know the number of rotations of the first gear 340, the number of rotations of the first gear 340 can be used to know the number of rotations of the second gear 350, and the number of rotations of the second gear 350 can be used to know the number of rotations of the roller 310. Therefore, the inlet height of the first pipe 20 can be known.

[0033] It should also be noted that through the above, it can be known that the number of rotations of the roller 310 can be finally determined by the number of rotations of the output shaft of the motor. In addition, the roller 310 can be equipped with an electronic sensor to detect the number of rotations of the roller 310 through the electronic sensor.

[0034] In some embodiments, the second end of the support rod 320 is disposed on the ground; or the second end of the support rod 320 is disposed on the side wall or the top of the sedimentation tank.

[0035] It should be noted that the setting of the second end of the support rod 320 on the ground can be referred to Figure 3 shown in

[0036] In some embodiments, the interface detection system of the settling tank may further include: a buffer tank 50; a second pipeline 60, the inlet of the second pipeline 60 is connected to the outlet of the liquid detector 10, and the outlet of the second pipeline 60 faces the inside of the buffer tank 50.

[0037] It should be noted that in the case of setting the buffer tank 50 and the second pipeline 60, the flow direction of the settling liquid in the settling tank is successively the settling tank, the first pipeline 20, the three-way valve, the liquid detector 10, the second pipeline 60, and the buffer tank 50. In addition, the buffer tank 50 can be used to store the settling liquid, which can be used continuously later, avoiding directly discarding the settling liquid, and thus reducing the raw material consumption.

[0038] In some embodiments, the interface detection system of the settling tank may further include: a counterweight 70, which is arranged outside the pipeline at the inlet of the first pipeline 20.

[0039] Reference Figure 3 As shown, the first pipeline 20 may float due to buoyancy, thereby causing an incorrect estimation of the inlet height of the first pipeline 20. Therefore, the embodiment of the present invention defines that the counterweight 70 is arranged outside the pipeline at the inlet of the first pipeline 20, avoiding the first pipeline 20 from floating due to buoyancy, and thus improving the accuracy of the data of the inlet height of the first pipeline 20 obtained, and improving the data accuracy of the clear liquid layer height and the mud layer height in the settling tank.

[0040] In some embodiments, the first pipeline 20 may be a rubber tube, the motor may be a three-phase motor, and the liquid detector 10 may be an optical detector.

[0041] It should be noted that it is possible to directly determine whether the sucked settling liquid belongs to the clear liquid layer or the mud layer through the optical detector, or the optical detector and the data analysis software can be combined to determine whether the sucked settling liquid belongs to the clear liquid layer or the mud layer.

[0042] In some embodiments, the position of the outlet of the first pipeline 20 is fixed, and the height of the outlet of the first pipeline 20 is 0.1 m to 50 m lower than the height of the surface of the settling liquid in the settling tank.

[0043] It should be noted that in the case where the position of the outlet of the first pipeline 20 is fixed, the atmospheric pressure difference is made constant, thereby improving the stability of the liquid flow rate in the first pipeline 20.

[0044] It should be noted that the interface detection system of the settling tank may include: the settling tank, rubber hoses, counterweight 70, rollers 310 equipped with electronic sensors, three-phase motors, vacuum pumps and three-way valves, optical detectors, data analysis software and other devices. The depth data at the inlet of the rubber hose can be collected by the rollers 310 equipped with electronic sensors, the rotation direction and angle of the rollers 310 can be controlled by the three-phase motors, and the vacuum pumps and three-way valves are responsible for starting the operation. The siphon principle is used to extract the settling liquid without power to achieve on-line monitoring. The state of the settling liquid is detected by the optical detector, and the data is analyzed in real time by the data analysis software. The diameter of the rollers 310 can be 0.1 to 10 meters. The state of the extracted settling liquid can be detected by the optical detector, and the data can be recorded and analyzed in real time by the data analysis software. The inner diameter of the rubber hose can be 1 to 100 cm, the wall thickness of the hose can be 1 to 100 mm, the length of the rubber hose can be 1 to 200 meters, and the material of the first pipeline 20 is not limited to rubber.

[0045] It should be noted that the settling tank is the main equipment in the red mud separation and washing process during alumina production. It has the advantages of simple structure, easy operation, and long operation cycle. The height of the clear liquid layer and the height of the mud layer are important indicators characterizing the operation state of the settling tank. During the production process, it is necessary to ensure that the settling tank is in a balanced state. If the clear liquid layer of the settling tank is too low or unstable, it will cause overflow and muddy water, affecting normal production.

[0046] Therefore, real-time detection of the heights of the clear liquid layer and the mud layer is the key work for the stable operation of the sedimentation process. At present, the measurement of the mud interface height and solution density of the settling tank usually relies on manual operation. This measurement method not only has a large labor intensity, but also has a lag in the analysis results, affecting the timeliness of the adjustment of the settling tank conditions, resulting in the phenomenon of unstable operation of the settling tank occurring from time to time. In order to improve the accuracy and efficiency of the measurement, the embodiment of the present invention uses an automated device to measure the height of the clear liquid layer of the settling tank. The automated measurement device can reduce manual intervention, improve the effectiveness and accuracy of the measurement, thereby optimizing the operation of the settling tank and improving the efficiency and product quality of alumina production. By introducing advanced automated devices and systems, the alumina industry can significantly improve the operating efficiency of the production line, effectively reduce manual intervention, and reduce production costs.

[0047] The implementation process of the embodiments of the present invention may be as follows. First, wind the rubber tube around the roller 310 equipped with an electronic sensor. Measure the position of the rubber tube inlet by the rotation of the roller 310. Both ends of the rubber tube are placed on the inner and outer sides of the settling tank. One end is connected to the counterweight 70 and placed inside the settling tank, and the other end is fixed outside the settling tank, and the outer outlet is 0.1 m to 50 m lower than the liquid level in the tank. Then, install a vacuum pump and a three-way valve at the rubber tube outlet outside the settling tank to start the device. The settling liquid drawn out through the rubber tube first flows through the optical detector, and the liquid composition is detected by the optical detector to judge the level of the liquid composition where the rubber tube inlet in the settling tank is located. Finally, the liquid flowing out of the rubber tube enters the next process together with the clear liquid flowing out of the overflow port.

[0048] The following continues to strengthen the understanding of the embodiments of the present invention through examples. It should be noted that due to the action of gravity, the mud in the solution will automatically settle to the lower layer, which is called the mud layer, and the clear upper layer is called the clear liquid layer:

[0049] Example 1:

[0050] On the high-efficiency deep-cone settling tank in the red mud separation and washing process of alumina production enterprises, first wind the rubber tube around the roller 310 with a diameter of 1 m. The roller 310 is equipped with an electronic sensor to detect the number of turns of the roller 310, and then calculate the length of the rubber tube in the tank. Connect the inlet end of the rubber tube to the counterweight 70 and place it 10 m inside the settling tank; the other end is fixed outside the settling tank, and the height of the outer outlet is 1.5 m lower than the liquid level in the tank. Install a vacuum pump and a three-way valve at the rubber tube outlet outside the settling tank. First, connect the vacuum pump and the liquid in the tank through the three-way valve. The vacuum pump is turned on for 1 minute to suck out the liquid in the tank, and then turn the three-way valve to make the liquid flow to the optical detector. The settling liquid drawn out through the rubber tube first flows through the optical detector, and the liquid composition is detected by the optical detector. If it is judged that the liquid composition where the rubber tube inlet in the settling tank is located is the clear liquid layer, then control the three-phase motor to rotate the roller 310 counterclockwise to extend the rubber tube in the tank by 1 m. After standing for 2 minutes, it is detected that the outflow liquid is still the clear liquid, and continue to control the three-phase motor to rotate the roller 310 counterclockwise to extend the rubber tube in the tank by 1 m. At this time, it is detected that the drawn liquid is the mud layer, and the height of the clear liquid layer at this time can be calculated by the angle of rotation of the roller 310 at this time, which is 11 m.

[0051] Example 2:

[0052] In the high-efficiency deep-cone sedimentation tank of the red mud separation and washing process in alumina production enterprises, first wind the rubber tube around the roller 310 with a diameter of 1.2 meters. The roller 310 is equipped with an electronic sensor for detecting the number of turns of the roller 310, and then calculate the length of the rubber tube in the tank through calculation. Connect the inlet end of the rubber tube to the counterweight 70 and place it 15 meters inside the sedimentation tank; the other end is fixed outside the sedimentation tank, and the height of the outside outlet is 1 meter lower than the liquid level in the tank. Install a vacuum pump and a three-way valve at the outlet of the rubber tube outside the sedimentation tank. First, connect the vacuum pump and the liquid in the tank through the three-way valve. The vacuum pump is turned on for 1 minute to suck out the liquid in the tank, and then turn the three-way valve to make the liquid flow to the detector. The sedimentation liquid drawn out through the rubber tube first flows through the optical detector. The liquid composition is detected by the optical detector. If it is judged that the liquid composition at the inlet of the rubber tube in the sedimentation tank is the mud layer, then control the three-phase motor to rotate the roller 310 clockwise to make the rubber tube in the tank contract upward by 1 meter. After standing for 2 minutes, it is detected that the outflow liquid is still the mud layer, and continue to control the three-phase motor to rotate the roller 310 clockwise to make the rubber tube in the tank contract upward by 1 meter. At this time, it is detected that the drawn liquid is the clear liquid, and the height of the clear liquid layer at this time can be calculated as 13 meters through the rotation angle of the roller 310 at this time.

[0053] Example 3:

[0054] In the high-efficiency deep-cone sedimentation tank of the red mud separation and washing process in alumina production enterprises, first wind the rubber tube around the roller 310 with a diameter of 1.1 meters. The roller 310 is equipped with an electronic sensor for detecting the number of turns of the roller 310, and then calculate the length of the rubber tube in the tank through calculation. Connect the inlet end of the rubber tube to the counterweight 70 and place it 10 meters inside the sedimentation tank; the other end is fixed outside the sedimentation tank, and the height of the outside outlet is 2 meters lower than the liquid level in the tank. Install a vacuum pump and a three-way valve at the outlet of the rubber tube outside the sedimentation tank. First, connect the vacuum pump and the liquid in the tank through the three-way valve. The vacuum pump is turned on for 1 minute to suck out the liquid in the tank, and then turn the three-way valve to make the liquid flow to the detector. The sedimentation liquid drawn out through the rubber tube first flows through the optical detector. The liquid composition is detected by the optical detector. If it is judged that the liquid composition at the inlet of the rubber tube in the sedimentation tank is the mud layer, then control the three-phase motor to rotate the roller 310 clockwise to make the rubber tube in the tank contract upward by 0.5 meter. After standing for 3 minutes, it is detected that the outflow liquid is the clear liquid, and it can be known that the height of the clear liquid layer at this time is 9.5 meters.

[0055] Example 4:

[0056] In the high-efficiency deep-cone settling tank of the red mud separation and washing process in alumina production enterprises, first wind the rubber tube around the roller 310 with a diameter of 1 meter. The roller 310 is equipped with an electronic sensor for detecting the number of turns of the roller 310, and then calculate the length of the rubber tube in the tank. Connect the inlet end of the rubber tube to the counterweight 70 and place it 10 meters inside the settling tank; the other end is fixed outside the settling tank, and the height of the outside outlet is 2.5 meters lower than the liquid level in the tank. Install a vacuum pump and a three-way valve at the outlet of the rubber tube outside the settling tank. First, connect the vacuum pump and the liquid in the tank through the three-way valve. The vacuum pump is turned on for 1 minute to suck out the liquid in the tank, and then the three-way valve is rotated to make the liquid flow to the detector. The settling liquid drawn out through the rubber tube first flows through the optical detector, and the liquid composition is detected by the optical detector to judge whether the liquid composition at the inlet of the rubber tube in the settling tank is in the clear liquid layer. If so, control the three-phase motor to rotate the roller 310 counterclockwise to extend the rubber tube in the tank downward by 2 meters. After standing for 5 minutes, the outflow liquid is detected to be the mud layer. Then control the three-phase motor to rotate clockwise to contract the rubber tube in the tank upward by 1 meter. After standing for 5 minutes, the drawn-out liquid is detected to be the clear liquid, and it can be known that the height of the clear liquid layer is 11 meters at this time.

[0057] Example Five:

[0058] In the high-efficiency deep-cone settling tank of the red mud separation and washing process in alumina production enterprises, first wind the rubber tube around the roller 310 with a diameter of 2 meters. The roller 310 is equipped with an electronic sensor for detecting the number of turns of the roller 310, and then calculate the length of the rubber tube in the tank. Connect the inlet end of the rubber tube to the counterweight 70 and place it 16 meters inside the settling tank; the other end is fixed outside the settling tank, and the height of the outside outlet is 5 meters lower than the liquid level in the tank. Install a vacuum pump and a three-way valve at the outlet of the rubber tube outside the settling tank. First, connect the vacuum pump and the liquid in the tank through the three-way valve. The vacuum pump is turned on for 1 minute to suck out the liquid in the tank, and then the three-way valve is rotated to make the liquid flow to the detector. The settling liquid drawn out through the rubber tube first flows through the optical detector, and the liquid composition is detected by the optical detector to judge whether the liquid composition at the inlet of the rubber tube in the settling tank is the mud layer. If so, control the three-phase motor to rotate the roller 310 clockwise to contract the rubber tube in the tank upward by 6 meters. After standing for 5 minutes, the outflow liquid is detected to be the clear liquid, then control the three-phase motor to rotate the roller 310 counterclockwise to extend the rubber tube in the tank downward by 3 meters and stand for 5 minutes. The drawn-out liquid is detected to be the mud layer, then control the three-phase motor to rotate the roller 310 clockwise to contract the rubber tube in the tank upward by 2 meters and stand for 5 minutes. The drawn-out liquid is detected to be the mud layer, and it can be known that the height of the clear liquid layer is 10 meters at this time.

[0059] Example Six:

[0060] On the high-efficiency deep-cone settling tank in the red mud separation and washing process of alumina production enterprises, first, wind the rubber tube around the roller 310 with a diameter of 3 meters. The roller 310 is equipped with an electronic sensor for detecting the number of turns of the roller 310, and then calculate the length of the rubber tube in the tank. Connect the inlet end of the rubber tube to the counterweight 70 and place it 12 meters inside the settling tank; the other end is fixed outside the settling tank, and the height of the outside outlet is 5 meters lower than the liquid level in the tank. Install a vacuum pump and a three-way valve at the outlet of the rubber tube outside the settling tank. First, connect the vacuum pump and the liquid in the tank through the three-way valve, start the vacuum pump for 1 minute, suck out the liquid in the tank, and then rotate the three-way valve to make the liquid flow to the detector. The settling liquid drawn out through the rubber tube first flows through the optical detector, and the liquid composition is detected by the optical detector. If it is judged that the liquid composition at the inlet of the rubber tube in the settling tank is the mud layer, then control the three-phase motor to rotate the roller 310 clockwise to make the rubber tube in the tank contract upward by 1 meter. After standing for 5 minutes, if the outflow liquid is still the mud layer, continue to control the three-phase motor to rotate the roller 310 clockwise to make the rubber tube in the tank contract upward by 1 meter and stand for 5 minutes. If the outflow liquid is still the mud layer, continue to control the three-phase motor to rotate the roller 310 clockwise to make the rubber tube in the tank contract upward by 1 meter and stand for 5 minutes. If the outflow liquid is still the mud layer, continue to control the three-phase motor to rotate the roller 310 counterclockwise to make the rubber tube in the tank contract upward by 1 meter and stand for 5 minutes. If the drawn-out liquid is clear liquid, it can be known that the height of the clear liquid layer is 8 meters at this time.

[0061] An interface detection system for a settling tank provided by an embodiment of the present invention includes: a liquid detector 10, arranged outside the settling tank; a first pipeline 20, the inlet of the first pipeline 20 is movably arranged in the settling liquid of the settling tank, and the outlet of the first pipeline 20 is arranged outside the settling tank; a lifting assembly 30, arranged above the settling tank, used to drive the inlet of the first pipeline 20 to move up and down, and the first pipeline 20 is suspended on the lifting assembly 30; a siphon starting assembly 40, one end of the siphon starting assembly 40 is connected to the outlet of the first pipeline 20, and the other end of the siphon starting assembly 40 is connected to the inlet of the liquid detector 10. Since the lifting assembly 30 can drive the inlet of the first pipeline 20 to move up and down, the settling liquid at different heights in the settling tank can be siphoned to the liquid detector 10, and then the liquid detector 10 analyzes the settling liquid to judge whether the settling liquid belongs to the clear liquid layer or the mud layer, and further determines whether the height where the inlet of the first pipeline 20 is located belongs to the clear liquid layer or the mud layer, so that the height of the clear liquid layer and the height of the mud layer in the settling tank can be determined, avoiding manual operation to measure the height of the clear liquid layer and the height of the mud layer, improving the measurement efficiency, and enabling technicians to adjust the conditions of the settling tank in time according to the actual situation. Therefore, the timeliness of adjusting the conditions of the settling tank is improved.

[0062] Based on the same inventive concept, an embodiment of the present invention provides a settling tank, including the interface detection system of the settling tank in any one of the above embodiments.

[0063] It should be understood that for more implementation details of the settling tank in the embodiments of the present invention, reference may be made to the interface detection system of the foregoing settling tank. For the sake of brevity of the specification, they will not be elaborated herein.

[0064] The above are only the embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. An interface detection system for a sedimentation tank, characterized in that: include: A liquid detector is arranged outside the sedimentation tank; a first pipe, wherein an inlet of the first pipe is movably disposed in the sedimentation liquid of the sedimentation tank, and an outlet of the first pipe is disposed outside the sedimentation tank; A lifting assembly, disposed above the sedimentation tank, for driving the inlet of the first pipeline to move up and down, and the first pipeline is suspended on the lifting assembly; A siphon start component, one end of which is connected to the outlet of the first pipe, and the other end of which is connected to the inlet of the liquid detector.

2. The interface detection system of the sedimentation tank according to claim 1, characterized in that: The siphon start component comprises: Vacuum pump; A three-way valve, wherein the inlet of the three-way valve is connected to the outlet of the first pipeline, the first outlet of the three-way valve is connected to the inlet of the liquid detector, and the second outlet of the three-way valve is connected to the vacuum pump.

3. The interface detection system of the sedimentation tank according to claim 1, characterized in that: The lifting assembly comprises: A rotating device, the rotating device comprising a roller, the rotating axis of the roller is parallel to the surface of the sedimentation liquid, and the first pipe is wound around the side of the roller; A support rod, wherein the first end of the support rod is connected to the rotating device.

4. The interface detection system of the sedimentation tank according to claim 3, characterized in that: The rotating device further comprises: Motor and chain; A first gear, wherein a central hole of the first gear is fixedly connected to an output shaft of the motor, and the first gear is meshedly connected to one end of the chain; The second gear is arranged on the end surface of the roller, and the central axis where the central hole of the second gear is located coincides with the rotating axis of the roller, and the second gear is meshedly connected with the other end of the chain.

5. The interface detection system of the sedimentation tank according to claim 3, characterized in that: The second end of the support rod is disposed on the ground; or The second end of the support rod is arranged on the side wall or the top of the sedimentation tank.

6. The interface detection system of the sedimentation tank according to claim 1, characterized in that: Also includes: Buffer tank; A second pipe, wherein the inlet of the second pipe is connected to the outlet of the liquid detector, and the outlet of the second pipe faces the interior of the buffer tank.

7. The interface detection system of the sedimentation tank according to claim 1, characterized in that: Also includes: The counterweight block is arranged outside the inlet of the first pipeline.

8. The interface detection system of the sedimentation tank according to claim 4, characterized in that: The first pipeline is a rubber tube, the motor is a three-phase motor, and the liquid detector is an optical detector.

9. The interface detection system for a sedimentation tank according to any one of claims 1 to 8, characterized in that: The position of the outlet of the first pipeline is fixed, and the outlet height of the first pipeline is 0.1 meter to 50 meters lower than the surface height of the sedimentation liquid in the sedimentation tank.

10. A sedimentation tank, characterized in that: An interface detection system comprising a sedimentation tank as described in any one of claims 1-9.

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