An intelligent lifting thickener drainage system and method based on turbidity monitoring

Abstract

A smart lifting thickener drainage system and method based on turbidity monitoring, comprising: a water collection mechanism comprising a water collection cover and a rigid water collection pipe; a displacement adjustment mechanism comprising a fixed frame, a screw guide rail, and a slider; transverse connecting rods connecting the slider and the rigid water collection pipe; a monitoring assembly comprising a turbidity detection sensor, a distance sensor, and a liquid level sensor; a power mechanism comprising a water suction hose, a main drainage pipe, and a water pump; the water pump being connected to the rigid water collection pipe via the water suction hose; the inlet end of the overflow drainage pipe being connected to the outlet at one end of the overflow trough, and the outlet end being connected to the middle section of the main drainage pipe; and a method comprising: when the turbidity value is less than a set turbidity threshold and the liquid level height data is not lower than the overflow liquid level height of the overflow trough, drainage is performed using the overflow trough and the overflow drainage pipe; otherwise, drainage is performed using the water pump and the main drainage pipe. This system and method can achieve automated regulation and control of the overflow water discharge volume and speed.

Description

Technical Field

[0001] The present invention belongs to the field of intelligent control technology, and in particular relates to an intelligent lifting thickener drainage system and method based on turbidity monitoring. Background Art

[0002] A thickener is a commonly used solid-liquid separation device in mineral processing. It uses gravity to separate solid particles in a liquid, thereby separating the solids. During the settling process, heavier suspended particles gradually settle to the bottom, while lighter particles and clean water flow out of the upper layer as overflow water. The thickener is typically equipped with an overflow trough at the top. The overflow water level reaches this overflow trough and flows out of the overflow pipe into an overflow tank. It is typically returned to the thickener's water inlet or other processing units for secondary treatment or recovery.

[0003] In the process of using a thickener to treat mortar, stratification will occur after a period of flocculation and sedimentation of the mortar. Among them, from top to bottom, it is divided into an overflow area, a sedimentation area, and a compression area. In order to effectively remove the overflow water in the overflow area, a stepped overflow drain valve is often used to control the liquid level of the overflow water. Although this method can increase the bottom flow concentration and promote the circulation of overflow water to a certain extent, there are usually drainage dead corners during the drainage process, which will affect the bottom flow concentration. At the same time, the valve is easily blocked by tailings during the drainage process. In addition, the drainage speed is often uncontrolled, and the drainage flow is uneven, resulting in the less overflow water in the sand bin, the slower the drainage speed. In order to effectively solve the above problems, it is urgent to provide an intelligent lifting thickener drainage device and method based on turbidity monitoring. Summary of the Invention

[0004] In response to the problems existing in the above-mentioned prior art, the present invention provides an intelligent lifting thickener drainage system and method based on turbidity monitoring. The system has a high degree of intelligence, high control accuracy, and good environmental benefits. It can realize automatic adjustment and control of drainage volume and speed. Compared with traditional methods, it can reduce manual intervention in the entire drainage operation process and reduce labor input costs. At the same time, it can effectively reduce the waste of water resources in the drainage process and greatly improve production efficiency. The method has a high degree of intelligence, a simple implementation process, good environmental performance, and high drainage efficiency. It can realize automatic drainage of overflow water and obtain high-quality filling bodies. At the same time, it can effectively solve the problem that the step valve is easily blocked by tailings.

[0005] In order to achieve the above-mentioned object, the present invention provides an intelligent lifting thickener drainage system based on turbidity monitoring, comprising a bin body, an overflow trough and an intelligent drainage device; the overflow trough is installed at the top of the bin body;

[0006] The intelligent drainage device includes a water collection mechanism, a displacement adjustment mechanism, a monitoring component, a power mechanism and a controller;

[0007] The water collection mechanism is arranged in the inner cavity of the bin body, and includes a water collection cover and a rigid water collection pipe; the water collection cover is arranged horizontally, has a straight open end at its lower end, and has a water permeable hole at the center of its top; the rigid water collection pipe is vertically fixedly connected to the top of the water collection cover, and its lower end is connected to the water permeable hole;

[0008] The displacement adjustment mechanism includes a fixed frame, a screw guide rail, a slider, a driving mechanism and a transverse connecting rod; the fixed frame is vertically mounted on one side wall of the interior of the bin body, and its upper end extends to the top of the bin body; the screw guide rail is vertically arranged and rotatably mounted in the fixed frame; a threaded hole is provided on the interior of the slider, and is fitted onto the outside of the screw guide rail through threaded fitting, and at the same time, its side surface on the outside is in sliding contact with the fixed frame; the driving mechanism is mounted on the top of the fixed frame, and its output end is connected to the upper end of the screw guide rail for driving the rotation of the screw guide rail; the transverse connecting rod is horizontally arranged, and its outer end is vertically fixedly connected to the inner side of the slider, and its inner end is vertically fixedly connected to the lower part of the rigid water collection pipe;

[0009] The monitoring assembly includes a turbidity detection sensor, a distance sensor and a liquid level sensor. The turbidity detection sensor is installed inside the water collection cover. The distance sensor is installed on one side of the upper end of the rigid water collection pipe through a transverse bracket, with its detection surface facing downward, and is used to detect the distance signal between the transverse bracket and the liquid surface in real time; the liquid level sensor is installed on the inner side wall of the tank body and is used to detect the liquid level height signal in real time;

[0010] The power mechanism includes a water suction hose, a main drainage pipeline, a water suction pump, an overflow drainage pipeline, a main drainage regulating valve, an overflow drainage regulating valve and a total drainage regulating valve; the water suction pump is installed at the top of the warehouse body or outside the warehouse body, its inlet end is connected to the upper end of the rigid water collection pipeline through a water suction hose, and its outlet end is connected to the inlet end of the main drainage pipeline; the inlet end of the overflow drainage pipeline is connected to the water outlet at one end of the overflow trough, and its outlet end is connected to the middle section of the main drainage pipeline; the main drainage regulating valve is connected in series to the water inlet section of the main drainage pipeline; the overflow drainage regulating valve is connected in series to the middle section of the overflow drainage pipeline; and the total drainage regulating valve is connected in series to the water outlet section of the main drainage pipeline;

[0011] The input end of the controller is respectively connected to the turbidity detection sensor, the distance sensor and the liquid level sensor, and the output end is respectively connected to the driving mechanism, the water pump, the main drainage regulating valve, the overflow drainage regulating valve and the total drainage regulating valve.

[0012] Furthermore, in order to facilitate adjustment of the horizontal position of the water collecting mechanism in the bin body, the horizontal connecting rod is a linear electric telescopic rod, and the output end of the controller is also connected to the linear electric telescopic rod.

[0013] As a preference, the water collecting cover is a box-type structure with an open lower end, and the water permeable hole is provided in the central area of ​​the top plate of the water collecting cover.

[0014] Furthermore, in order to facilitate the centralized collection and storage of overflow water, an overflow water tank is also included. The overflow water tank is installed on one side of the exterior of the warehouse body, and its inlet end is connected to the outlet end of the main drainage pipeline.

[0015] Furthermore, in order to effectively ensure the stability of the rotation of the screw guide rail, the upper and lower ends of the fixed frame are relatively installed with an upper bearing seat and a lower bearing seat, and an upper bearing and a lower bearing are respectively installed in the upper bearing seat and the lower bearing seat; the upper and lower ends of the screw guide rail are rotatably connected to the upper bearing seat and the lower bearing seat through the upper bearing and the lower bearing respectively.

[0016] Furthermore, in order to facilitate the alarm action, an alarm module is also included. The alarm module is installed on the outer wall of the warehouse body and is connected to the output end of the controller for executing the alarm action according to the control of the controller.

[0017] Furthermore, in order to facilitate the detection of the positions of the highest stroke and the lowest stroke of the slider, so as to automatically control the driving mechanism to stop the action when the slider reaches the highest stroke or the lowest stroke position, it also includes an upper proximity switch and a lower proximity switch. The upper proximity switch and the lower proximity switch are relatively installed on the upper bearing seat and the lower bearing seat, and are respectively in contact with the upper end face and the lower end face of the slider. At the same time, the upper proximity switch and the lower proximity switch are both connected to the input end of the controller.

[0018] As a preference, the controller is a PLC controller.

[0019] In the present invention, by setting up a water collecting hood, it is possible to take advantage of the fact that the cross-sectional area of ​​its open end is larger than that of the water pumping line, effectively reducing the disturbance of the water pump's fluctuation on the water absorption liquid level, thereby not affecting the underflow concentration and effectively ensuring the quality of the obtained filling body. A section of rigid water collecting pipe is set at the upper end of the water collecting hood, which can be conveniently connected to a displacement adjustment mechanism via a transverse connecting rod and a distance sensor via a transverse bracket. In this way, on the one hand, the displacement adjustment mechanism can be used to change the vertical position of the rigid water collecting pipe, and on the other hand, the distance sensor can be dynamically moved with the water collecting hood in the vertical direction, thereby facilitating the real-time detection of the distance difference between the water collecting hood and the liquid level. Thus, the distance difference can be used as feedback data to automatically adjust the vertical height of the water collecting hood, ultimately achieving intelligent adjustment of the drain outlet position. The water pump is connected to the rigid water collecting pipe via a water pumping hose, which ensures that the water collecting hood always remains connected to the water pump during the vertical movement process, ensuring that the drainage operation can be carried out continuously during the vertical movement process. By using a fixed frame to support the screw guide rail vertically and rotatably on the inner side of the bin body, and then connecting one end of the horizontal connecting rod to the slider mounted on the screw guide rail, the slider and the water collecting cover can be driven to change their vertical displacement by rotating the screw guide rail. By installing a turbidity detection sensor inside the water collecting cover, the change in the concentration of suspended matter in the water can be detected synchronously and accurately in real time during the pumping process, and the change in the concentration of suspended matter in the extracted overflow water can be sensed in real time. The turbidity value of the water quality in the thickening bin can be monitored in real time, so that the height of the water collecting cover drain port can be automatically adjusted according to the change in turbidity. In this way, not only can the automatic control of drainage without dead angles be achieved, but also the drainage volume and drainage time can be conveniently controlled, ensuring the efficiency and continuity of the drainage process. At the same time, the drainage efficiency and water quality stability are ensured, and the unstable thickening effect caused by excessive or insufficient drainage is avoided, thereby ensuring the quality of the filling body and facilitating the subsequent high-quality filling operation. By setting a main drainage regulating valve on the main drainage pipeline and an overflow drainage regulating valve on the overflow drainage pipeline, the overflow speed and flow of the overflow water can be conveniently adjusted during the drainage process using the overflow trough and the drainage process using the water collecting cover, thereby further reducing the disturbance effect of the fluctuation of the drainage action on the overflow water in the overflow area, thereby ensuring the stability of the drainage process, avoiding the occurrence of unstable thickening effect due to excessive drainage or excessive disturbance, ensuring the quality of the filling body, and effectively solving the problem that the step valve is easily blocked by tailings, reducing the maintenance cost of the equipment and improving the drainage efficiency.

[0020] By incorporating an intelligent drainage device, this invention significantly improves the intelligence of the thickener, enabling automated drainage of overflow water. It also effectively addresses the issue of tailings clogging the step valve, reducing equipment maintenance costs and improving drainage efficiency. This system boasts a high level of intelligence, high control precision, and excellent environmental benefits, enabling automated regulation and control of drainage volume and speed. Compared to traditional methods, this system reduces manual intervention and labor costs throughout the drainage process, while also minimizing water waste and significantly improving production efficiency.

[0021] The present invention also provides a method for draining water from an intelligent lifting thickener based on turbidity monitoring, which uses an intelligent lifting thickener drainage system based on turbidity monitoring, comprising the following steps:

[0022] Step 1: Send the treated tailings slurry into the bin of the thickener, then add flocculant into the bin to start the flocculation and sedimentation operation. After the flocculation and sedimentation operation continues for the set time, proceed to step 2;

[0023] Step 2: In the initial stage, the drive mechanism drives the screw guide rail to rotate in the opposite direction, synchronously driving the slider and the horizontal connecting rod to move upward until the slider moves to the highest stroke. The drive mechanism is then controlled to stop. At this time, the distance sensor moves to the upper end of the bin along with the rigid water collection pipe.

[0024] Step 3: Use the liquid level sensor to collect the liquid level height signal in real time and send it to the controller. At the same time, use the turbidity detection sensor to collect the turbidity signal of the overflow water in real time and send it to the controller. The controller obtains the liquid level height data according to the liquid level signal and obtains the turbidity value of the overflow water according to the turbidity signal. When the turbidity value is less than the set turbidity threshold and the liquid level height data is not lower than the overflow liquid level height of the overflow tank, execute S31. When the turbidity value is less than the set turbidity threshold and the liquid level height data is lower than the overflow liquid level height of the overflow tank, execute S32. When the turbidity value is greater than or equal to the set turbidity threshold, directly execute step 4.

[0025] S31: The controller controls the overflow drainage regulating valve to open and the main drainage regulating valve to open, and uses the overflow trough and the overflow drainage pipeline to discharge the overflow liquid near the overflow trough into the main drainage pipeline, and then discharges it into the overflow pool through the main drainage pipeline; at the same time, the controller controls the valve opening of the overflow drainage regulating valve according to the continuous change of the turbidity value. When the continuous change of the turbidity value is gentle, the current valve opening of the main overflow drainage regulating valve is maintained unchanged. When the continuous change of the turbidity value is drastic, the valve opening of the overflow drainage regulating valve is controlled to decrease until the change of the turbidity value tends to be gentle, and then the current valve opening of the overflow drainage regulating valve is maintained unchanged;

[0026] S32: Use the distance sensor to collect the distance signal between the horizontal bracket and the liquid surface in real time, and send it to the controller. The controller obtains the distance value A between the horizontal bracket and the liquid surface according to the distance signal between the horizontal bracket and the liquid surface, and compares the distance value A between the horizontal bracket and the liquid surface with the distance value B between the horizontal bracket and the water collection cover. When the distance value A is greater than the distance value B, the control driving mechanism drives the screw guide rail to rotate in the positive direction, and simultaneously drives the slider and the horizontal connecting rod to move downward until the distance value A is less than or equal to the distance value B, and the distance value A is greater than or equal to the set distance value C, wherein the distance value C is less than the distance value B, the control driving mechanism stops the action, and at the same time, controls the overflow drainage regulating valve to close, controls the main drainage regulating valve to open, and keeps the main drainage regulating valve in the open state, controls the water pump to start and provide negative pressure, and collects overflow water in a large range through the water collection cover, and then passes through the rigid water collection pipe The water pipe, the suction hose and the main drainage pipe are discharged into the overflow pool. During the operation of the water pump, the controller compares the distance value A and the distance value B in real time. When the distance value A is greater than the distance value B, the driving mechanism is controlled to drive the screw guide rail to rotate forward, and the slider and the horizontal connecting rod are synchronously driven to move downward until the distance value A is less than or equal to the distance value B, and the distance value A is greater than or equal to the set distance value C. The driving mechanism is controlled to stop the action to realize automatic following action in the process of pumping and draining water. At the same time, the controller controls the valve opening of the main drainage regulating valve according to the continuous change of the turbidity value. When the continuous change of the turbidity value is slow, the current valve opening of the main drainage regulating valve is kept unchanged. When the continuous change of the turbidity value is drastic, the valve opening of the main drainage regulating valve is controlled to decrease until the change of the turbidity value tends to be slow, and then the current valve opening of the main drainage regulating valve is kept unchanged.

[0027] Step 4: Control the water pump to stop working. At the same time, count the duration of turbidity when the turbidity value is greater than or equal to the set turbidity threshold. When the turbidity duration is less than the set duration, re-execute step 3. When the turbidity duration is greater than or equal to the set duration, control the alarm module to perform an alarm action.

[0028] Furthermore, in order to facilitate the automatic shutdown control of the driving mechanism when the slider reaches the highest stroke and the lowest stroke position, in step one, the upper proximity switch is used to detect whether the slider has reached the highest stroke. When the slider reaches the highest stroke, the upper proximity switch is triggered and sends an upper stroke in place signal to the controller. After receiving the upper stroke in place signal, the controller controls the driving mechanism to stop moving; in step two, the lower proximity switch is used to detect whether the slider has reached the lowest stroke. When the slider reaches the lowest stroke, the lower proximity switch is triggered and sends a lower stroke in place signal to the controller. After receiving the lower stroke in place signal, the controller controls the driving mechanism to stop moving, controls the water pump to stop moving, and at the same time, controls the alarm module to perform an alarm action.

[0029] In the present invention, during the initial phase, the distance measuring sensor is moved along the rigid water collection pipe to the top of the tank body, preventing the distance measuring sensor from being submerged when the initial overflow water level is high. A turbidity sensor is first used to detect the turbidity value of the overflow water and compare it with a set turbidity threshold to effectively determine whether the overflow water drainage conditions are met. When the overflow water drainage conditions are met, the liquid level data sensed by the liquid level sensor is used as the basis for action judgment. When the liquid level data is greater than or equal to the overflow level of the overflow trough, drainage is performed directly using the overflow trough and overflow drainage pipe. When the liquid level data is less than the overflow level of the overflow trough, drainage is performed using a pump, effectively saving energy consumption. When drainage is performed using the overflow drainage pipe, the opening of the overflow drainage regulating valve is adjusted based on the continuous change in turbidity value. This effectively ensures that fluctuations in the drainage action do not disturb the overflow water in the overflow area, thereby ensuring that the concentration of the underflow is not affected. During drainage operations using a water pump, the distance value A between the horizontal support and the liquid surface is obtained through a distance sensor, and then the distance value A is compared with the distance value B between the horizontal support and the water collecting cover. According to the comparison result, the water collecting cover is controlled to perform a follow-up action during the drainage process, thereby intelligently adjusting the position of the drain outlet. In this way, automatic control of drainage without dead angles can be achieved, and the drainage volume and drainage time can be conveniently controlled, ensuring the efficiency and continuity of the drainage process. At the same time, the stability of drainage efficiency and water quality is ensured, and the instability of the thickening effect caused by excessive or insufficient drainage is avoided. During drainage operations using a water pump, the main drainage regulating valve opening is adjusted according to the continuous change of the turbidity value, which can effectively ensure that the fluctuation of the drainage action will not cause disturbances to the overflow water in the overflow area, thereby ensuring the quality of the obtained filling body and facilitating the subsequent high-quality filling operations. In addition, it also effectively solves the problem of the step valve being easily clogged by tailings, reduces the maintenance cost of the equipment, and improves drainage efficiency. When the turbidity value does not meet the drainage conditions for overflow water, the pump is promptly controlled to stop working until the turbidity value is less than the set turbidity threshold, at which point the pump is restarted to drain the water. This effectively ensures the appropriateness of drainage and prevents unstable thickening effects caused by excessive or insufficient drainage, effectively protecting the quality of the filling. If the turbidity value remains greater than or equal to the turbidity threshold within the set technical time, the alarm module is controlled to trigger an alarm, which can promptly and effectively notify relevant personnel when the production process has ended.

[0030] This method has a high degree of intelligence, a simple implementation process, good environmental performance, and high drainage efficiency. It can realize the automatic drainage operation of overflow water and obtain high-quality filling bodies. At the same time, it effectively solves the problem that the step valve is easily blocked by tailings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a principle block diagram of the circuit part of the present invention.

[0033] In the figure: 1. Water collecting cover; 2. Water suction hose; 3. Water suction pump; 4. Turbidity detection sensor; 5. Screw guide rail; 6. Horizontal connecting rod; 7. Slider; 8. Fixed bracket; 9. Overflow trough; 10. Main drain regulating valve; 11. Main drain pipeline; 12. Overflow pool; 13. Compression area; 14. Warehouse; 15. Rigid water collecting pipeline; 16. Water collecting mechanism; 17. Displacement adjustment mechanism; 18. Driving mechanism; 19. Distance measuring sensor; 20. Overflow drain pipeline; 21. Liquid level sensor; 22. Overflow drain regulating valve; 23. Main drain regulating valve; 24. Settling area; 25. Overflow area; 26. Horizontal bracket; 27. Upper bearing seat; 28. Lower bearing seat; 29. ​​Alarm module. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] like Figure 1 and Figure 2 As shown, the present invention provides an intelligent lifting thickener drainage system based on turbidity monitoring, comprising a bin body 14, an overflow trough 9 and an intelligent drainage device; the overflow trough 9 is installed at the top of the bin body 14;

[0036] The intelligent drainage device includes a water collection mechanism 16, a displacement adjustment mechanism 17, a monitoring component, a power mechanism and a controller;

[0037] The water collection mechanism 16 is disposed in the inner cavity of the bin body 14 and includes a water collection cover 1 and a rigid water collection pipe 15; the water collection cover 1 is disposed horizontally, has a straight open end at its lower end, and has a water permeable hole at the center of its top; the rigid water collection pipe 15 is vertically fixedly connected to the upper portion of the water collection cover 1, and has its lower end connected to the water permeable hole;

[0038] The displacement adjustment mechanism 17 includes a fixed frame 8, a screw guide rail 5, a slider 7, a driving mechanism 18 and a transverse connecting rod 6; the fixed frame 8 is vertically mounted on one side wall of the interior of the bin body 14, and its upper end extends to the top of the bin body 14; the screw guide rail 5 is vertically arranged and rotatably mounted in the fixed frame 8; a threaded hole is provided inside the slider 7, and is fitted on the outside of the screw guide rail 5 through threaded fitting. At the same time, its outer side is in sliding contact with the fixed frame 8; the driving mechanism 18 is mounted on the top of the fixed frame 8, and its output end is connected to the upper end of the screw guide rail 5 for driving the rotation of the screw guide rail 5. As a preferred embodiment, the driving mechanism 18 is a stepping motor; the transverse connecting rod 6 is horizontally arranged, and one end of its outer side is vertically fixedly connected to the inner side of the slider 7, and one end of its inner side is vertically fixedly connected to the lower part of the rigid water collection pipe 15;

[0039] The monitoring assembly includes a turbidity detection sensor 4, a distance sensor 19 and a liquid level sensor 21. The turbidity detection sensor 4 is installed inside the water collection cover 1. The distance sensor 19 is installed on one side of the upper end of the rigid water collection pipe 15 through a transverse bracket 26, with its detection surface facing downward, for real-time detection of the distance signal between the transverse bracket 26 and the liquid surface; the liquid level sensor 21 is installed on the inner side wall of the bin body 14 for real-time detection of the liquid level height signal;

[0040] The power mechanism includes a water suction hose 2, a main drainage pipeline 11, a water suction pump 3, an overflow drainage pipeline 20, a main drainage regulating valve 10, an overflow drainage regulating valve 22 and a total drainage regulating valve 23; the water suction pump 3 is installed at the top of the warehouse body 14 or the outside of the warehouse body 14, and its inlet end is connected to the upper end of the rigid water collection pipeline 15 through the water suction hose 2, and its outlet end is connected to the inlet end of the main drainage pipeline 11; the inlet end of the overflow drainage pipeline 20 is connected to the water outlet at one end of the overflow tank 9, and its outlet end is connected to the middle section of the main drainage pipeline 11; the main drainage regulating valve 10 is connected in series to the water inlet section of the main drainage pipeline 11; the overflow drainage regulating valve 22 is connected in series to the middle section of the overflow drainage pipeline 20; and the total drainage regulating valve 23 is connected in series to the water outlet section of the main drainage pipeline 11;

[0041] The input end of the controller is connected to the turbidity detection sensor 4, the distance sensor 19 and the liquid level sensor 21 respectively, and the output end is connected to the driving mechanism 18, the water pump 3, the main drainage regulating valve 10, the overflow drainage regulating valve 22 and the total drainage regulating valve 23 respectively.

[0042] In order to facilitate the adjustment of the horizontal position of the water collecting mechanism 16 in the bin body 14, the horizontal connecting rod 6 is a linear electric telescopic rod, and the output end of the controller is also connected to the linear electric telescopic rod.

[0043] As a preference, the water collecting cover 1 is a box-type structure with an open lower end, and the water permeable hole is provided in the central area of ​​the top plate of the water collecting cover 1 .

[0044] In order to conveniently collect and store overflow water, an overflow water tank 12 is also included. The overflow water tank 12 is installed on one side outside the warehouse body 14, and its inlet end is connected to the outlet end of the main drainage pipe 11.

[0045] In order to effectively ensure the stability of the rotation of the screw guide rail, the upper and lower ends of the fixed frame 8 are relatively installed with an upper bearing seat 27 and a lower bearing seat 28, and an upper bearing and a lower bearing are respectively installed in the upper bearing seat 27 and the lower bearing seat 28; the upper and lower ends of the screw guide rail 5 are rotatably connected to the upper bearing seat 27 and the lower bearing seat 28 through the upper bearing and the lower bearing respectively.

[0046] In order to facilitate the alarm action, an alarm module 29 is also included. The alarm module 29 is installed on the outer wall of the warehouse body 14 and is connected to the output end of the controller for performing the alarm action according to the control of the controller.

[0047] In order to facilitate the detection of the position of the highest stroke and the lowest stroke of the slider, so as to automatically control the driving mechanism to stop when the slider reaches the highest stroke or the lowest stroke position, it also includes an upper proximity switch and a lower proximity switch. The upper proximity switch and the lower proximity switch are relatively installed on the upper bearing seat and the lower bearing seat, and are in contact with the upper end face and the lower end face of the slider 7 respectively. At the same time, the upper proximity switch and the lower proximity switch are both connected to the input end of the controller.

[0048] As a preferred embodiment, the controller is a PLC controller. Further preferably, the controller is installed on the outer wall of the warehouse body 14.

[0049] In the present invention, by setting up a water collecting hood, it is possible to take advantage of the fact that the cross-sectional area of ​​its open end is larger than that of the water pumping line, effectively reducing the disturbance of the water pump's fluctuation on the water absorption liquid level, thereby not affecting the underflow concentration and effectively ensuring the quality of the obtained filling body. A section of rigid water collecting pipe is set at the upper end of the water collecting hood, which can be conveniently connected to a displacement adjustment mechanism via a transverse connecting rod and a distance sensor via a transverse bracket. In this way, on the one hand, the displacement adjustment mechanism can be used to change the vertical position of the rigid water collecting pipe, and on the other hand, the distance sensor can be dynamically moved with the water collecting hood in the vertical direction, thereby facilitating the real-time detection of the distance difference between the water collecting hood and the liquid level. Thus, the distance difference can be used as feedback data to automatically adjust the vertical height of the water collecting hood, ultimately achieving intelligent adjustment of the drain outlet position. The water pump is connected to the rigid water collecting pipe via a water pumping hose, which ensures that the water collecting hood always remains connected to the water pump during the vertical movement process, ensuring that the drainage operation can be carried out continuously during the vertical movement process. By using a fixed frame to support the screw guide rail vertically and rotatably on the inner side of the bin body, and then connecting one end of the horizontal connecting rod to the slider mounted on the screw guide rail, the slider and the water collecting cover can be driven to change their vertical displacement by rotating the screw guide rail. By installing a turbidity detection sensor inside the water collecting cover, the change in the concentration of suspended matter in the water can be detected synchronously and accurately in real time during the pumping process, and the change in the concentration of suspended matter in the extracted overflow water can be sensed in real time. The turbidity value of the water quality in the thickening bin can be monitored in real time, so that the height of the water collecting cover drain port can be automatically adjusted according to the change in turbidity. In this way, not only can the automatic control of drainage without dead angles be achieved, but also the drainage volume and drainage time can be conveniently controlled, ensuring the efficiency and continuity of the drainage process. At the same time, the drainage efficiency and water quality stability are ensured, and the unstable thickening effect caused by excessive or insufficient drainage is avoided, thereby ensuring the quality of the filling body and facilitating the subsequent high-quality filling operation. By setting a main drainage regulating valve on the main drainage pipeline and an overflow drainage regulating valve on the overflow drainage pipeline, the overflow speed and flow of the overflow water can be conveniently adjusted during the drainage process using the overflow trough and the drainage process using the water collecting cover, thereby further reducing the disturbance effect of the fluctuation of the drainage action on the overflow water in the overflow area, thereby ensuring the stability of the drainage process, avoiding the occurrence of unstable thickening effect due to excessive drainage or excessive disturbance, ensuring the quality of the filling body, and effectively solving the problem that the step valve is easily blocked by tailings, reducing the maintenance cost of the equipment and improving the drainage efficiency.

[0050] By incorporating an intelligent drainage device, this invention significantly improves the intelligence of the thickener, enabling automated drainage of overflow water. It also effectively addresses the issue of tailings clogging the step valve, reducing equipment maintenance costs and improving drainage efficiency. This system boasts a high level of intelligence, high control precision, and excellent environmental benefits, enabling automated regulation and control of drainage volume and speed. Compared to traditional methods, this system reduces manual intervention and labor costs throughout the drainage process, while also minimizing water waste and significantly improving production efficiency.

[0051] The present invention also provides a method for draining water from an intelligent lifting thickener based on turbidity monitoring, which uses an intelligent lifting thickener drainage system based on turbidity monitoring, comprising the following steps:

[0052] Step 1: The treated tailings slurry is fed into the bin 14 of the thickener, and flocculant is added to the bin 14 to start the flocculation and sedimentation operation. After the flocculation and sedimentation operation continues for a set time, step 2 is performed;

[0053] Step 2: In the initial stage, the drive mechanism 18 is used to drive the screw guide rail 5 to rotate in the opposite direction, synchronously driving the slider 7 and the transverse connecting rod 6 to move upward until the slider 7 moves to the highest stroke. The drive mechanism 18 is then controlled to stop. At this time, the distance sensor 19 moves with the rigid water collection pipe 15 to the upper end of the bin body 14;

[0054] Step 3: Use the liquid level sensor 21 to collect the liquid level height signal in real time and send it to the controller. At the same time, use the turbidity detection sensor 4 to collect the turbidity signal of the overflow water in real time and send it to the controller. The controller obtains liquid level height data according to the liquid level signal and obtains the turbidity value of the overflow water according to the turbidity signal. When the turbidity value is less than the set turbidity threshold and the liquid level height data is not lower than the overflow liquid level height of the overflow tank 9, execute S31. When the turbidity value is less than the set turbidity threshold and the liquid level height data is lower than the overflow liquid level height of the overflow tank 9, execute S32. When the turbidity value is greater than or equal to the set turbidity threshold, directly execute step 4.

[0055] S31: The controller controls the overflow drainage regulating valve 22 to open and the main drainage regulating valve 23 to open, and uses the overflow tank 9 and the overflow drainage pipe 20 to discharge the overflow liquid near the overflow tank 9 into the main drainage pipe 11, and then discharges it into the overflow pool 12 through the main drainage pipe 11; at the same time, the controller controls the valve opening of the overflow drainage regulating valve 22 according to the continuous change of the turbidity value. When the continuous change of the turbidity value is gentle, the current valve opening of the main overflow drainage regulating valve 22 is kept unchanged. When the continuous change of the turbidity value is drastic, the valve opening of the overflow drainage regulating valve 22 is controlled to decrease until the change of the turbidity value tends to be gentle, and then the current valve opening of the overflow drainage regulating valve 22 is kept unchanged;

[0056] S32: Use the distance sensor 19 to collect the distance signal between the horizontal bracket 26 and the liquid surface in real time, and send it to the controller. The controller obtains the distance value A between the horizontal bracket 26 and the liquid surface according to the distance signal between the horizontal bracket 26 and the liquid surface, and compares the distance value A between the horizontal bracket 26 and the liquid surface with the distance value B between the horizontal bracket 26 and the water collecting cover 1. When the distance value A is greater than the distance value B, the control driving mechanism 18 drives the screw guide rail 5 to rotate in the positive direction, and simultaneously drives the slider 7 and the horizontal connecting rod 6 to move downward until the distance value A is less than or equal to the distance value B, and the distance value A is greater than or equal to the set distance value C, wherein the distance value C is less than the distance value B, the control driving mechanism 18 stops the action, and at the same time, controls the overflow drainage regulating valve 22 to close, controls the main drainage regulating valve 10 to open, and keeps the total drainage regulating valve 23 open, controls the water pump 3 to start working and provide negative pressure, and collects overflow water in a large range through the water collecting cover 1, and then collects the overflow water through the rigid collection cover. The water pipe 15, the suction hose 2 and the main drainage pipe 11 are discharged into the overflow pool 12. During the operation of the water pump 3, the controller compares the distance value A and the distance value B in real time. When the distance value A is greater than the distance value B, the driving mechanism 18 is controlled to drive the screw guide rail 5 to rotate forward, and synchronously drives the slider 7 and the transverse connecting rod 6 to move downward until the distance value A is less than or equal to the distance value B, and the distance value A is greater than or equal to the set distance value C. The driving mechanism 18 is controlled to stop the action to realize automatic following action in the process of pumping and draining water. At the same time, the controller controls the valve opening of the main drainage regulating valve 10 according to the continuous change of the turbidity value. When the continuous change of the turbidity value is slow, the current valve opening of the main drainage regulating valve 10 is kept unchanged. When the continuous change of the turbidity value is drastic, the valve opening of the main drainage regulating valve 10 is controlled to decrease until the change of the turbidity value tends to be slow, and then the current valve opening of the main drainage regulating valve 10 is kept unchanged.

[0057] Step 4: Control the water pump 3 to stop working. At the same time, count the turbidity duration when the turbidity value is greater than or equal to the set turbidity threshold. When the turbidity duration is less than the set duration, re-execute step 3. When the turbidity duration is greater than or equal to the set duration, control the alarm module 29 to perform an alarm action.

[0058] In order to facilitate the automatic shutdown control of the driving mechanism when the slider reaches the highest stroke and the lowest stroke position, in step one, the upper proximity switch is used to detect whether the slider 7 has reached the highest stroke. When the slider 7 reaches the highest stroke, the upper proximity switch is triggered and sends an upper stroke in place signal to the controller. After receiving the upper stroke in place signal, the controller controls the driving mechanism 18 to stop moving; in step two, the lower proximity switch is used to detect whether the slider 7 has reached the lowest stroke. When the slider 7 reaches the lowest stroke, the lower proximity switch is triggered and sends a lower stroke in place signal to the controller. After receiving the lower stroke in place signal, the controller controls the driving mechanism 18 to stop moving, controls the water pump 3 to stop moving, and at the same time, controls the alarm module 29 to perform an alarm action.

[0059] In the present invention, during the initial phase, the distance measuring sensor is moved along the rigid water collection pipe to the top of the tank body, preventing the distance measuring sensor from being submerged when the initial overflow water level is high. A turbidity sensor is first used to detect the turbidity value of the overflow water and compare it with a set turbidity threshold to effectively determine whether the overflow water drainage conditions are met. When the overflow water drainage conditions are met, the liquid level data sensed by the liquid level sensor is used as the basis for action judgment. When the liquid level data is greater than or equal to the overflow level of the overflow trough, drainage is performed directly using the overflow trough and overflow drainage pipe. When the liquid level data is less than the overflow level of the overflow trough, drainage is performed using a pump, effectively saving energy consumption. When drainage is performed using the overflow drainage pipe, the opening of the overflow drainage regulating valve is adjusted based on the continuous change in turbidity value. This effectively ensures that fluctuations in the drainage action do not disturb the overflow water in the overflow area, thereby ensuring that the concentration of the underflow is not affected. During drainage operations using a water pump, the distance value A between the horizontal support and the liquid surface is obtained through a distance sensor, and then the distance value A is compared with the distance value B between the horizontal support and the water collecting cover. According to the comparison result, the water collecting cover is controlled to perform a follow-up action during the drainage process, thereby intelligently adjusting the position of the drain outlet. In this way, automatic control of drainage without dead angles can be achieved, and the drainage volume and drainage time can be conveniently controlled, ensuring the efficiency and continuity of the drainage process. At the same time, the stability of drainage efficiency and water quality is ensured, and the instability of the thickening effect caused by excessive or insufficient drainage is avoided. During drainage operations using a water pump, the main drainage regulating valve opening is adjusted according to the continuous change of the turbidity value, which can effectively ensure that the fluctuation of the drainage action will not cause disturbances to the overflow water in the overflow area, thereby ensuring the quality of the obtained filling body and facilitating the subsequent high-quality filling operations. In addition, it also effectively solves the problem of the step valve being easily clogged by tailings, reduces the maintenance cost of the equipment, and improves drainage efficiency. When the turbidity value does not meet the drainage conditions for overflow water, the pump is promptly controlled to stop working until the turbidity value is less than the set turbidity threshold, and then the pump is restarted to perform drainage operations. This can effectively ensure the appropriateness of drainage and prevent the occurrence of unstable thickening effects due to excessive or insufficient drainage, effectively ensuring the quality of the filling body. When the turbidity value is still greater than or equal to the turbidity threshold within the set technical time, the alarm module is controlled to perform an alarm action, which can promptly and effectively remind relevant personnel when the production process has ended. This method has a high degree of intelligence, a simple implementation process, good environmental performance, and high drainage efficiency. It can realize the automated drainage of overflow water and obtain high-quality filling bodies. At the same time, it effectively solves the problem of step valves being easily clogged by tailings.

Claims

1. An intelligent lifting thickener drainage system based on turbidity monitoring, comprising a bin body (14) and an overflow trough (9), wherein the overflow trough (9) is installed at the top of the bin body (14), and is characterized in that: It also includes smart drainage devices; The intelligent drainage device comprises a water collection mechanism (16), a displacement adjustment mechanism (17), a monitoring component, a power mechanism and a controller; The water collecting mechanism (16) is arranged in the inner cavity of the bin body (14), and comprises a water collecting cover (1) and a rigid water collecting pipe (15); the water collecting cover (1) is arranged horizontally, and has a straight open end at its lower end, and a water permeable hole is opened at the center of its top end; the rigid water collecting pipe (15) is vertically fixedly connected to the upper part of the water collecting cover (1), and its lower end is connected to the water permeable hole; The displacement adjustment mechanism (17) includes a fixed frame (8), a screw guide rail (5), a slider (7), a driving mechanism (18) and a transverse connecting rod (6); the fixed frame (8) is vertically mounted on a side wall inside the bin body (14), and its upper end extends to the top of the bin body (14); the screw guide rail (5) is vertically arranged and rotatably mounted in the fixed frame (8); a threaded hole is provided inside the slider (7) and is fitted onto the outside of the screw guide rail (5) through threaded fitting, and at the same time, its side surface close to the outside is in sliding contact with the fixed frame (8); the driving mechanism (18) is mounted on the top of the fixed frame (8), and its output end is connected to the upper end of the screw guide rail (5) for driving the rotation of the screw guide rail (5); the transverse connecting rod (6) is horizontally arranged, and its outer end is vertically fixedly connected to the inner side of the slider (7), and its inner end is vertically fixedly connected to the lower part of the rigid water collection pipe (15); The monitoring assembly comprises a turbidity detection sensor (4), a distance sensor (19) and a liquid level sensor (21), wherein the turbidity detection sensor (4) is mounted inside the water collecting cover (1), and the distance sensor (19) is mounted on one side of the upper end of the rigid water collecting pipe (15) via a transverse bracket (26), with its detection surface facing downward, for real-time detection of a distance signal between the transverse bracket (26) and the liquid surface; and the liquid level sensor (21) is mounted on the inner side wall of the bin body (14) for real-time detection of a liquid level height signal. The power mechanism comprises a water pumping hose (2), a main drainage pipeline (11), a water pump (3), an overflow drainage pipeline (20), a main drainage regulating valve (10), an overflow drainage regulating valve (22) and a total drainage regulating valve (23); the water pump (3) is installed at the top of the bin body (14) or outside the bin body (14), and its inlet end is connected to the upper end of the rigid water collecting pipeline (15) through the water pumping hose (2), and its outlet end is connected to the main drainage pipeline (1 1); the inlet end of the overflow drainage pipeline (20) is connected to the water outlet at one end of the overflow trough (9), and the outlet end thereof is connected to the middle section of the main drainage pipeline (11); the main drainage regulating valve (10) is connected in series to the water inlet section of the main drainage pipeline (11); the overflow drainage regulating valve (22) is connected in series to the middle section of the overflow drainage pipeline (20); and the main drainage regulating valve (23) is connected in series to the water outlet section of the main drainage pipeline (11); The input end of the controller is respectively connected to the turbidity detection sensor (4), the distance sensor (19) and the liquid level sensor (21), and the output end thereof is respectively connected to the driving mechanism (18), the water pump (3), the main drainage regulating valve (10), the overflow drainage regulating valve (22) and the total drainage regulating valve (23).

2. The intelligent lifting thickener drainage system based on turbidity monitoring according to claim 1 is characterized in that: The transverse connecting rod (6) is a linear electric telescopic rod, and the output end of the controller is also connected to the linear electric telescopic rod.

3. The intelligent lifting thickener drainage system based on turbidity monitoring according to claim 1 or 2, characterized in that: The water collecting cover (1) is a box-type structure with an open lower end, and the water permeable hole is provided in the central area of ​​the top plate of the water collecting cover (1).

4. The intelligent lifting thickener drainage system based on turbidity monitoring according to claim 3 is characterized in that: It also includes an overflow water tank (12), which is installed on one side outside the bin body (14), and its inlet end is connected to the outlet end of the main drainage pipe (11).

5. The intelligent lifting thickener drainage system based on turbidity monitoring according to claim 4 is characterized in that: An upper bearing seat (27) and a lower bearing seat (28) are mounted oppositely at the upper and lower ends of the fixing frame (8), and an upper bearing and a lower bearing are mounted in the upper bearing seat (27) and the lower bearing seat (28), respectively; and the upper and lower ends of the screw guide rail (5) are rotatably connected to the upper bearing seat (27) and the lower bearing seat (28) via the upper bearing and the lower bearing, respectively.

6. The intelligent lifting thickener drainage system based on turbidity monitoring according to claim 5 is characterized in that: It also includes an alarm module (29), which is installed on the outer wall of the warehouse body (14) and connected to the output end of the controller, and is used to execute an alarm action according to the control of the controller.

7. The intelligent lifting thickener drainage system based on turbidity monitoring according to claim 6 is characterized in that: It also includes an upper proximity switch and a lower proximity switch, which are relatively mounted on the upper bearing seat (27) and the lower bearing seat (28), and respectively contact and cooperate with the upper end surface and the lower end surface of the slider (7). At the same time, the upper proximity switch and the lower proximity switch are both connected to the input end of the controller.

8. The intelligent lifting thickener drainage system based on turbidity monitoring according to claim 7 is characterized in that: The controller is a PLC controller.

9. A method for draining water from an intelligent lifting thickener based on turbidity monitoring, using the intelligent lifting thickener drainage system based on turbidity monitoring according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: sending the treated tailings slurry into the bin (14) of the thickener, adding flocculant into the bin (14), starting the flocculation and sedimentation operation, and executing step 2 after the flocculation and sedimentation operation continues for a set time; Step 2: In the initial stage, the driving mechanism (18) drives the screw guide rail (5) to rotate in the opposite direction, and simultaneously drives the slider (7) and the transverse connecting rod (6) to move upward until the slider (7) moves to the highest stroke. The driving mechanism (18) is controlled to stop the action. At this time, the distance sensor (19) moves to the upper end of the bin body (14) along with the rigid water collection pipe (15); Step 3: Using the liquid level sensor (21) to collect the liquid level height signal in real time and send it to the controller. At the same time, using the turbidity detection sensor (4) to collect the turbidity signal of the overflow water in real time and send it to the controller. The controller obtains the liquid level height data according to the liquid level signal and obtains the turbidity value of the overflow water according to the turbidity signal. When the turbidity value is less than the set turbidity threshold and the liquid level height data is not less than the overflow liquid level height of the overflow tank (9), S31 is executed. When the turbidity value is less than the set turbidity threshold and the liquid level height data is less than the overflow liquid level height of the overflow tank (9), S32 is executed. When the turbidity value is greater than or equal to the set turbidity threshold, step 4 is directly executed. S31: The controller controls the overflow drainage regulating valve (22) to open and the main drainage regulating valve (23) to open, and uses the overflow trough (9) and the overflow drainage pipeline (20) to discharge the overflow liquid near the overflow trough (9) into the main drainage pipeline (11), and then discharges the overflow liquid into the overflow pool (12) through the main drainage pipeline (11); at the same time, the controller controls the valve opening of the overflow drainage regulating valve (22) according to the continuous change of the turbidity value. When the continuous change of the turbidity value is gentle, the current valve opening of the main overflow drainage regulating valve (22) is kept unchanged. When the continuous change of the turbidity value is drastic, the valve opening of the overflow drainage regulating valve (22) is controlled to decrease until the change of the turbidity value tends to be gentle, and then the current valve opening of the overflow drainage regulating valve (22) is kept unchanged; S32: The distance signal between the transverse support (26) and the liquid surface is collected in real time by using the distance sensor (19), and is sent to the controller. The controller obtains the distance value A between the transverse support (26) and the liquid surface according to the distance signal between the transverse support (26) and the liquid surface, and compares the distance value A between the transverse support (26) and the liquid surface with the distance value B between the transverse support (26) and the water collecting cover (1). When the distance value A is greater than the distance value B, the driving mechanism (18) is controlled to drive the screw guide rail (5) to rotate in the forward direction, and the synchronous belt The movable slider (7) and the transverse connecting rod (6) move downward until the distance value A is less than or equal to the distance value B, and the distance value A is greater than or equal to the set distance value C, wherein the distance value C is less than the distance value B, the control driving mechanism (18) stops the action, and at the same time, the control overflow drainage regulating valve (22) is closed, the control main drainage regulating valve (10) is opened, and the main drainage regulating valve (23) is kept open, the control pump (3) starts to work and provides negative pressure, and the overflow water is collected in a large range through the water collecting cover (1), and then the overflow water is discharged through the water collecting cover (1). The rigid water collection pipe (15), the water pump hose (2) and the main drainage pipe (11) are discharged into the overflow pool (12). During the operation of the water pump (3), the controller compares the distance value A and the distance value B in real time. When the distance value A is greater than the distance value B, the control driving mechanism (18) drives the screw guide rail (5) to rotate in the positive direction, and simultaneously drives the slider (7) and the transverse connecting rod (6) to move downward until the distance value A is less than or equal to the distance value B, and the distance value A is greater than or equal to the set distance value C. The control driving mechanism (18) ) stops the action to realize the automatic following action in the process of pumping and draining. At the same time, the controller controls the valve opening of the main drainage regulating valve (10) according to the continuous change of the turbidity value. When the continuous change of the turbidity value is gentle, the current valve opening of the main drainage regulating valve (10) is kept unchanged. When the continuous change of the turbidity value is drastic, the valve opening of the main drainage regulating valve (10) is controlled to decrease until the change of the turbidity value tends to be gentle, and then the valve opening of the main drainage regulating valve (10) is kept unchanged. Step 4: Control the water pump (3) to stop working. At the same time, count the duration of turbidity when the turbidity value is greater than or equal to the set turbidity threshold. When the turbidity duration is less than the set duration, re-execute step 3. When the turbidity duration is greater than or equal to the set duration, control the alarm module (29) to perform an alarm action.

10. The intelligent lifting thickener drainage method based on turbidity monitoring according to claim 9, characterized in that: In step one, an upper proximity switch is used to detect whether the slider (7) has reached the highest stroke position. When the slider (7) reaches the highest stroke position, the upper proximity switch is triggered and sends an upper stroke in-place signal to the controller. After receiving the upper stroke in-place signal, the controller controls the driving mechanism (18) to stop. In step two, a lower proximity switch is used to detect whether the slider (7) has reached the lowest stroke position. When the slider (7) reaches the lowest stroke position, the lower proximity switch is triggered and sends a lower stroke in-place signal to the controller. After receiving the lower stroke in-place signal, the controller controls the driving mechanism (18) to stop, controls the water pump (3) to stop, and simultaneously controls the alarm module (29) to perform an alarm action.

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