Siphon device for recovering clean water from a desliming basin

Abstract

The utility model relates to tailings filling material pulp tank technical field, concretely is a siphon device for desliming pool clean water recovery, including sealed cylinder, the top of sealed cylinder is provided with two independent branch pipes, is water pipe and water supplement pipe respectively, water supplement pipe is used to fill water in the inside before siphon device works, water pipe is connected with the clean water area in desliming pool through sealed connection water pipe, the bottom one side of sealed cylinder is connected with water pump, the lateral wall of sealed cylinder is fixed with liquid level pipe for observing the liquid level in sealed cylinder, the lateral wall of liquid level pipe is fixed with non -contact liquid level sensor, non -contact liquid level sensor and water pump's control module electricity is connected. In this siphon device for desliming pool clean water recovery, the device is matched with independent water pipe through sealed cylinder, and the water in the clean water area in desliming pool can be quickly pumped out through siphon effect combined with water pump auxiliary pumping.

Description

Technical Field

[0001] This utility model relates to the field of tailings desliming technology, specifically to a siphon device for clear water recovery in a desliming tank. Background Technology

[0002] In mining and related industrial production processes, tailings treatment and backfill slurry preparation are crucial steps. When treating tailings slurry, it is first pumped into a desliming tank for settling. The concentrated tailings slurry at the bottom is used for backfilling, while the upper clear water is generally recycled. Typically, a water pump inlet pipe is inserted into the clear water layer to pump the water out for recycling. However, directly using a water pump requires high power, and the clear water level fluctuates, requiring personnel to dynamically monitor the pumping process to prevent the pump from running dry. This method is time-consuming and labor-intensive. Therefore, there is an urgent need for a device that can assist in the recycling of clear water from the desliming tank. This would reduce the high power required for direct water pumping, the high requirements for pump selection, and the high cost, while also preventing the pump from running dry. Utility Model Content

[0003] The purpose of this utility model is to provide a siphon device for clear water recovery in sludge dewatering tanks, so as to solve the problems mentioned in the background art, such as the high requirements for water pump selection and the existence of water pump idling during clear water recovery in existing sludge dewatering tanks.

[0004] To achieve the above objectives, this utility model provides a siphon device for clear water recovery in a sludge dewatering tank, comprising a sealed cylinder. Two independent branch pipes are installed at the top of the sealed cylinder: a pumping pipe and a replenishing pipe. The replenishing pipe is used to fill the siphon device with water before operation. The pumping pipe is connected to the clear water area in the sludge dewatering tank via a sealed water pipe. A water pump is connected to one side of the bottom of the sealed cylinder. A level tube for observing the liquid level inside the sealed cylinder is fixedly installed on the side wall of the sealed cylinder. A non-contact level sensor is fixedly installed on the outer wall of the level tube, and the non-contact level sensor is electrically connected to the control module of the water pump.

[0005] This setup uses a sealed cylinder as its core: water is pumped into the sealed cylinder through a water supply pipe, and a water extraction pipe connects to the clean water area of ​​the sludge removal tank via a sealed water pipe, allowing for directional extraction of clean water. A water pump at the bottom of the sealed cylinder provides power for the pumping process, accelerating the flow of clean water from the sludge removal tank to the sealed cylinder. Compared to directly using a water pump, utilizing the siphon effect combined with water pump assistance significantly reduces the power requirement for the water pump. Simultaneously, a liquid level pipe on the side wall works in conjunction with a non-contact liquid level sensor. The sensor monitors the liquid level inside the cylinder in real time and transmits the signal to the water pump control module, forming a "liquid level monitoring - power adjustment" linkage mechanism. This mechanism monitors the liquid level during the siphon process in real time and disconnects the water pump switch when the liquid level is too low, preventing the water pump from running dry when the liquid level is too low.

[0006] Preferably, a float switch valve is installed on the upper side wall of the sealing cylinder. The float switch valve is connected to the water pump signal to control the water pump to stop. When the float on the float switch valve drops with the liquid level, the float switch valve is disconnected, thereby stopping the water pump to avoid insufficient water in the sealing cylinder and causing the water pump to run dry.

[0007] This device features a float switch valve installed on the upper side wall of the sealing cylinder. The float rises and falls synchronously with changes in the liquid level inside the cylinder, and the float switch valve is electrically connected to the water pump. When the water level in the sealing cylinder is insufficient, the float descends, triggering the internal contacts of the float switch valve to open, cutting off the power supply circuit to the water pump and causing it to stop immediately. Conversely, when the liquid level rises again, the float rises, the switch valve closes, and the water pump can be restarted.

[0008] Preferably, the non-contact liquid level sensor monitors the liquid level inside the sealed cylinder, and when the liquid level drops to a preset height, it sends a signal to the external control system to issue an alarm.

[0009] This system uses a non-contact liquid level sensor fixed to the outer wall of the liquid level tube. Utilizing ultrasonic or infrared detection technology, it can penetrate the tube and monitor the liquid level without contacting the water. The sensor is pre-set with a minimum safe liquid level threshold. When the detected liquid level drops below this threshold, the sensor's internal circuitry triggers a signal output, transmitting the abnormal liquid level information to the external control system. The control system then alerts staff via audible and visual alarms, SMS notifications, and other methods.

[0010] Preferably, a filter for filtering tailings impurities is also fixedly installed on the pumping pipe. The filter has a filtration accuracy of 50-100 mesh, and the inlet end of the filter faces the clear water area of ​​the sludge removal tank.

[0011] This feature involves installing a filter at the end of the pumping pipe closest to the sludge removal tank. The filter's filtration precision is set to 50-100 mesh, with the inlet facing the clean water area. When clean water flows from the sludge removal tank into the sealed cylinder through the pumping pipe, the water first passes through the filter. Fine particles of tailings and impurities are intercepted by the filter screen, and only clean water meeting the required precision passes through the filter into the subsequent pipeline. Simultaneously, the design of the inlet facing the clean water area reduces the probability of the water flow carrying impurities settled at the bottom of the tank.

[0012] Preferably, the liquid level tube is fixedly installed vertically on the side wall of the sealing cylinder, with the lower end of the liquid level tube 5-10cm from the bottom of the sealing cylinder and the upper end of the liquid level tube 20-30cm from the top of the sealing cylinder, so as to completely cover the effective liquid level observation range inside the sealing cylinder.

[0013] The liquid level tube is installed vertically along the side wall of the sealed cylinder, with its lower end 5-10cm from the bottom of the cylinder and its upper end 20-30cm from the top of the cylinder. This size range can completely cover the interval between the "minimum safe liquid level" and the "maximum safe liquid level" inside the sealed cylinder, allowing operators to clearly observe the liquid level changes under different operating conditions through the liquid level tube.

[0014] Preferably, the non-contact liquid level sensor is an ultrasonic liquid level sensor or an infrared liquid level sensor, and the sensor's detection end is in close contact with the outer wall of the sight glass. The detection position of the non-contact liquid level sensor corresponds to the preset minimum safe liquid level inside the cylinder.

[0015] This setup utilizes ultrasonic or infrared non-contact liquid level sensors. Both types of sensors are capable of penetrating transparent / semi-transparent liquid level tubes, and the detection end is in close contact with the outer wall of the tube to ensure a stable detection signal. Simultaneously, the sensor's detection position precisely corresponds to the lowest safe liquid level inside the tube; the detection action is only triggered when the liquid level falls below this position, avoiding false alarms caused by normal liquid level fluctuations.

[0016] Preferably, the outlet end of the water pump is connected to the outlet pipe, and a valve is installed on the outlet pipe; the top of the sealing cylinder is connected to the pumping pipe through the inlet.

[0017] This design connects the water pump's outlet end to the outlet pipe via an output pipe, allowing the water flow generated by the pump to directly flow into the outlet pipe. This provides negative pressure for the siphon and assists in the output of clean water. The top of the sealing cylinder is connected to the pumping pipe via an inlet. The inlet is located at the top to reduce the impact of the water flow, prevent the stirring of any small amount of impurities that may remain inside the cylinder, and facilitate the sealing connection between the pumping pipe and the sealing cylinder.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: In this siphon device for clear water recovery in the sludge dewatering tank, the device, through the cooperation of a sealed cylinder and independent pumping and discharging pipes, combined with the siphon power assisted by a water pump, can quickly extract water from the clear water area in the sludge dewatering tank, significantly improving the clear water recovery efficiency. At the same time, the 50-100 mesh filter on the pumping pipe can accurately intercept tailings impurities, preventing fine tailings particles from entering the recovery system with the clear water, effectively ensuring the purity of the recovered clear water, meeting the water quality requirements of tailings backing slurry preparation, mine auxiliary water use, and other scenarios, and improving the clear water recovery and utilization rate. The sealed structure of the sealing cylinder, combined with the power assistance of the water pump, avoids the siphon interruption problem caused by liquid level fluctuations in traditional siphon devices. Even if the clear water level in the sludge removal tank changes slightly, the water pump can still maintain a stable negative pressure inside the sealing cylinder, ensuring continuous operation of the siphon process. Combined with the valve on the outlet pipe, the clear water output can be flexibly controlled to adapt to water demand under different operating conditions, reducing interference with the overall tailings treatment process caused by frequent equipment start-ups and shutdowns. The device employs a dual level control scheme of "float switch valve + non-contact level sensor": when the liquid level drops to the trigger threshold, the float switch valve directly controls the water pump to stop via an electrical signal, preventing the water pump from running dry due to insufficient water in the sealed cylinder from a hardware perspective; at the same time, the non-contact level sensor is closely attached to the level tube to monitor the highest and lowest safe liquid levels in real time. If the liquid level is higher or lower than the preset value, the sensor immediately sends an alarm signal to the external control system and controls the water pump switch to disconnect, achieving dual protection of "shutdown protection + early warning prompt", significantly reducing the mechanical wear of the water pump caused by dry burning and running dry, and effectively extending the service life of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the sealing cylinder in this utility model; Figure 3 This is a schematic diagram of the float switch valve in this utility model; The meanings of the labels in the diagram are as follows: 1. Sealing cylinder; 11. Water pump; 12. Float switch valve; 13. Float; 16. Inlet; 2. Pumping pipe; 3. Sludge removal tank; 4. Outlet pipe; 41. Valve; 5. Liquid level pipe; 6. Non-contact liquid level sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a siphon device for clear water recovery in a sludge removal tank, such as... Figure 1 As shown, the system includes a sealing cylinder 1. Two independent branch pipes are installed at the top of the sealing cylinder 1: a pumping pipe 2 and a water supply pipe. A valve for controlling the flow of the water supply pipe is fixedly installed on the water supply pipe. The pumping pipe 2 is connected to the clear water area in the sludge removal tank 3 via a sealed water pipe. A water pump 11 for providing siphon power is connected to one side of the bottom of the sealing cylinder 1, and the outlet of the water pump 11 is connected to an outlet pipe 4. A level tube 5 for observing the liquid level inside the sealing cylinder 1 is fixedly installed on the side wall of the sealing cylinder 1. A non-contact level sensor 6 is fixedly installed on the outer wall of the level tube 5, and the non-contact level sensor 6 is electrically connected to the control module of the water pump 11.

[0022] Using the sealed cylinder 1 as the core carrier, water is injected into the sealed cylinder through the water supply pipe, creating a siphon effect within the sealed cylinder 1. The water extraction pipe 2 connects to the clean water area of ​​the sludge removal tank 3 via a sealed water pipe, allowing for the directional extraction of clean water. With the assistance of the water pump 11, the flow of clean water from the sludge removal tank 3 to the sealed cylinder 1 is accelerated. The clean water is then recycled and reused through the water outlet pipe 4. The valve 41 on the water outlet pipe 4 controls the on / off flow of clean water, achieving flow regulation. Simultaneously, the liquid level pipe 5 on the side wall of the sealed cylinder 1 works in conjunction with a non-contact liquid level sensor 6. The non-contact liquid level sensor 6 monitors the liquid level inside the sealed cylinder 1 in real time and transmits the signal to the control module of the water pump 11, forming a "liquid level monitoring - power regulation" linkage mechanism to ensure stable liquid level during the siphon process. When the liquid level is too low, the control module disconnects the control switch of the water pump 11, causing the water pump 11 to stop and preventing it from running dry. The liquid level tube 5 allows the non-contact liquid level sensor 6 to directly detect the liquid level inside the sealed cylinder 1. The linkage control between the non-contact liquid level sensor 6 and the water pump 11 avoids the liquid level being too high or too low, thus affecting the siphon efficiency and improving the accuracy of the device operation. Sealed structure ensures efficiency: The airtight design of the sealing cylinder 1 reduces air pressure leakage, ensures the stability of the negative pressure generated by the water pump 11, further improves the clean water recovery speed, and at the same time prevents external impurities from entering the sealing cylinder 1 and contaminating the recovered clean water.

[0023] In this embodiment, as Figure 2 , Figure 3 As shown, a float switch valve 12 is installed on the side wall of the sealing cylinder 1. The float switch valve 12 is connected to the water pump 11 through a connecting line, thereby controlling the shutdown action of the water pump 11. When the float 13 on the float switch valve 12 drops with the liquid level, the float switch valve 12 is disconnected, thereby stopping the water pump 11 to avoid insufficient water in the sealing cylinder 1 causing the water pump 11 to run dry.

[0024] A float switch valve 12 is installed on the upper side wall of the sealing cylinder 1. The float 13 on the float switch valve 12 rises and falls synchronously with the liquid level in the sealing cylinder 1, and the float switch valve 12 is electrically connected to the water pump 11. When the water level in the sealing cylinder 1 is insufficient and the liquid level drops, the float 13 drops accordingly, triggering the internal contacts of the float switch valve 12 to open, cutting off the power supply circuit of the water pump 11, causing the water pump 11 to stop immediately; conversely, when the liquid level rises, the float 13 rises, the float switch valve 12 closes, and the water pump 11 can be restarted. Hardware-level water pump protection: Through the mechanical linkage between the float ball 13 and the float ball switch valve 12, the water pump 11 can be quickly stopped when the water volume in the sealing cylinder 1 is insufficient without relying on a complex electronic control system. This prevents the water pump 11 from running dry and causing failures such as dry burning and bearing wear, thus extending the service life of the water pump 11. Reduced manual intervention costs: The device can automatically complete the "abnormal liquid level - water pump 11 shutdown protection" action without the need for staff to monitor the water volume in the sealed cylinder 1 in real time, reducing the pressure of manual inspection and reducing the risk of water pump 11 being damaged due to human negligence.

[0025] Specifically, the non-contact liquid level sensor 6 monitors the liquid level inside the sealed cylinder 1. When the liquid level is detected to drop to a preset height, it sends a signal to the external control system to trigger an alarm.

[0026] The non-contact liquid level sensor 6 is fixed to the outer wall of the liquid level tube 5. Using ultrasonic or infrared detection technology (as described in claim 6), it can penetrate the liquid level tube 5 to monitor the liquid level inside the sealed cylinder 1 without contacting the water. The non-contact liquid level sensor 6 has a preset minimum safe liquid level threshold. When the liquid level inside the sealed cylinder 1 drops below this threshold, the internal circuit of the non-contact liquid level sensor 6 triggers a signal output, transmitting the abnormal liquid level information to an external control system, such as the mine's central control room. The control system then alerts personnel through audible and visual alarms, SMS notifications, or other means. Early warning of risks: Compared with the "shutdown protection" of the water pump 11 by the float switch valve 12, the alarm function of the non-contact liquid level sensor 6 can detect abnormal liquid levels in the sealing cylinder 1 earlier, such as blockage of the water pumping pipe 2 leading to reduced water intake, or leakage of the sealing cylinder 1, etc., allowing staff time to troubleshoot and avoiding the impact of siphon interruption on the progress of clean water recycling. Enhance system safety: Through linkage with the external control system, the alarm signal of the non-contact liquid level sensor 6 can simultaneously trigger other emergency measures such as starting the backup pump and adjusting the inlet valve of the pumping pipe 2, forming a multi-level risk response mechanism to ensure the continuity of the entire tailings treatment process.

[0027] Furthermore, a filter for filtering tailings impurities is fixedly installed on the pumping pipe 2. The filter has a filtration accuracy of 50-100 mesh, and the inlet end of the filter faces the clear water area of ​​the sludge dewatering tank 3.

[0028] A filter is installed at the end of the pumping pipe 2 near the desludge tank 3, with a filtration accuracy set to 50-100 mesh. The inlet of the filter faces the clean water area of ​​the desludge tank 3. When clean water enters the sealing cylinder 1 from the desludge tank 3 through the pumping pipe 2, the water flow first passes through the filter, where fine particles of tailings and impurities are intercepted by the filter screen. Only the clean water that meets the accuracy requirements passes through the filter and enters the subsequent pipeline of the pumping pipe 2 and the sealing cylinder 1. At the same time, the design of the filter inlet facing the clean water area of ​​the desludge tank 3 can reduce the probability of the water flow carrying impurities settled at the bottom of the desludge tank 3. Ensuring the quality of recycled water: The filter effectively filters tailings impurities, preventing fine sand from entering the sealed cylinder 1 or subsequent water use processes, and preventing impurities from affecting the homogenization of the filling slurry or clogging components such as the water pump 11 and the valve 41 on the outlet pipe 4. Reduced maintenance frequency: The filter intercepts impurities in advance, reducing the deposition of impurities in the sealing cylinder 1 and the outlet pipe 4, thus reducing the frequency of cleaning the pipelines such as the pumping pipe 2, sealing cylinder 1, and outlet pipe 4, as well as disassembling and maintaining equipment such as the water pump 11 and valve 41, saving maintenance time and costs.

[0029] Furthermore, such as Figure 1 As shown, the liquid level tube 5 is fixedly installed on the side wall of the sealing cylinder 1 in a vertical direction, and the distance between the lower end of the liquid level tube 5 and the bottom of the sealing cylinder 1 is 5-10cm, and the distance between the upper end of the liquid level tube 5 and the top of the sealing cylinder 1 is 20-30cm, so as to completely cover the effective liquid level observation range inside the sealing cylinder 1.

[0030] The level tube 5 is installed vertically along the side wall of the sealing cylinder 1. The distance between the lower end of the level tube 5 and the bottom of the sealing cylinder 1 is 5-10cm, and the distance between the upper end of the level tube 5 and the top of the sealing cylinder 1 is 20-30cm. This size range can completely cover the interval between the "minimum safe level" and the "maximum safe level" inside the sealing cylinder 1, allowing the operator to clearly observe the changes in the liquid level inside the sealing cylinder 1 under different operating conditions through the level tube 5. Full coverage of observation range: Eliminates blind spots in liquid level observation inside sealing cylinder 1. Staff can accurately determine whether the water volume inside sealing cylinder 1 meets the siphon requirement through liquid level tube 5, avoiding misoperation due to incomplete observation. Auxiliary fault diagnosis: By observing the rate of change of liquid level in the sealed cylinder 1 through the liquid level tube 5, a sudden drop in liquid level may be due to leakage in the pumping pipe 2 or the outlet pipe 4, while stagnation of liquid level may be due to blockage of the filter on the pumping pipe 2. This provides a direct basis for fault diagnosis and improves maintenance efficiency.

[0031] Furthermore, the non-contact liquid level sensor 6 is an ultrasonic liquid level sensor or an infrared liquid level sensor, and the sensor's detection end is tightly fitted to the outer wall of the sight glass. The detection position of the non-contact liquid level sensor 6 corresponds to the preset minimum safe liquid level inside the cylinder.

[0032] An ultrasonic or infrared type non-contact liquid level sensor 6 is selected. Both types of sensors have the ability to detect through the transparent / semi-transparent liquid level tube 5, and the detection end of the non-contact liquid level sensor 6 is in close contact with the outer wall of the liquid level tube 5 to ensure stable detection signal. At the same time, the detection position of the non-contact liquid level sensor 6 precisely corresponds to the preset minimum safe liquid level in the sealed cylinder 1. The detection action is only triggered when the liquid level in the sealed cylinder 1 is lower than this position, avoiding false alarms caused by normal liquid level fluctuations. Accurate and stable detection: The non-contact design of the non-contact liquid level sensor 6 avoids corrosion and scaling problems caused by the sensor coming into contact with the water in the sealed cylinder 1. Compared with the contact sensor, it has higher detection accuracy of the liquid level in the sealed cylinder 1 and a longer service life. Adaptable to liquid level tube structures: The non-contact liquid level sensor 6 using ultrasonic or infrared technology can be adapted to liquid level tubes 5 made of different materials without requiring any modifications to the liquid level tube 5 and the sealing cylinder 1, ensuring the airtightness of the sealing cylinder 1 and simplifying the installation process of the non-contact liquid level sensor 6.

[0033] Furthermore, the outlet end of the water pump 11 is connected to the outlet pipe 4, and a valve 41 is installed on the outlet pipe 4. The top of the sealing cylinder 1 is connected to the pumping pipe 2 through the inlet 16.

[0034] The outlet end of the water pump 11 is connected to the outlet pipe 4, so that the water flow generated by the water pump 11 can directly flow into the outlet pipe 4. This provides negative pressure for the siphon process in the sealing cylinder 1 and also assists in the output of clean water from the outlet pipe 4. The top of the sealing cylinder 1 is connected to the pumping pipe 2 through the inlet 16. The inlet 16 is located at the top of the sealing cylinder 1, which can reduce the impact when clean water enters the sealing cylinder 1 from the pumping pipe 2, avoid stirring up any small amount of impurities that may remain in the sealing cylinder 1, and facilitate the sealing connection between the pumping pipe 2 and the sealing cylinder 1. When in use, the siphon device for clear water recovery in the sludge dewatering tank of this utility model first uses the sealed cylinder 1 as the core, and achieves efficient recovery of clear water from the sludge dewatering tank 3 through "negative pressure drive + liquid level control": Negative pressure siphon principle: The water pump 11 at the bottom of the sealed cylinder 1 reduces the air pressure inside the cylinder, forming a stable negative pressure, breaking the dependence of traditional siphon on the "liquid level difference between the sludge dewatering tank 3 and the recovery end", so that the water in the clear water area of ​​the sludge dewatering tank 3 is directionally sucked into the sealed cylinder 1 through the pumping pipe 2; Liquid level coordinated control: The liquid level can be directly observed through the liquid level tube 5. The non-contact liquid level sensor 6, ultrasonic / infrared type, monitors the minimum safe liquid level in real time and triggers an alarm. The float switch valve 12 and float 13 monitor the maximum safe liquid level and control the water pump 11 to stop, forming a "dual liquid level monitoring + active protection" mechanism. Impurity filtration guarantee: The 50-100 mesh filter on the water pumping pipe 2 intercepts tailings impurities in advance, avoiding contamination of the recycled clean water and clogging of the equipment; Water flow path optimization: The water pump 11 is connected to the outlet pipe 4 to maintain the negative pressure inside the cylinder and assist in the output of clean water; the water pumping pipe 2 is connected through the water inlet 16 at the top of the sealed cylinder 1 to reduce water flow impact and ensure stable liquid level. Detailed work process 1. Start-up Preparation Phase Check the status of the device: confirm that the sealing cylinder 1 is airtight and there is no air pressure leakage, the valve 41 on the outlet pipe 4 is closed, the filter of the pumping pipe 2 is not blocked and the inlet end is aligned with the clean water area of ​​the sludge removal tank 3; Setting parameters: Through the external control system, the minimum safe liquid level threshold of the non-contact liquid level sensor 6 corresponds to the preset detection position of the liquid level tube 5, and the maximum safe liquid level of the float ball 13 corresponds to the preset height of the upper part of the sealing cylinder 1 to adapt to the working conditions. Initial water filling option: If there is no initial water in the sealed cylinder 1, water can be injected into the cylinder through the water supply pipe to achieve the siphon requirement.

[0035] 2. Siphon Operation Phase Step 1: Start the water pump 11 to drain water through the outlet pipe 4, and at the same time reduce the air pressure inside the sealing cylinder 1 to form a negative pressure; Step 2: Under negative pressure, the water in the clear water area of ​​the sludge removal tank 3 flows into the tank through the pumping pipe 2 with the help of the siphon effect and the water pump 11. First, it passes through the filter to filter out the fine particles of tailings impurities, which are intercepted by the 50-100 mesh filter screen. Then, it enters the sealed cylinder 1 smoothly through the top water inlet 16, avoiding the water flow impacting and agitating the residual impurities inside the cylinder. Step 3: Observe the liquid level tube 5. When the liquid level in the sealed cylinder 1 rises to the normal working range between the minimum and maximum safe liquid levels, adjust the valve 41 on the water outlet pipe 4 to adjust the output flow rate. At this time, the water pump 11 continuously maintains the negative pressure inside the cylinder, and the clean water is stably output through the water outlet pipe 4 to subsequent water use processes such as filling slurry preparation. Step 4: Dynamic monitoring of liquid level: The non-contact liquid level sensor 6 is attached to the liquid level pipe 5 to monitor the liquid level in real time. If the liquid level fluctuates within the normal range, the sensor will not trigger an alarm, and the water pump 11 will continue to run. The float ball 13 rises and falls slightly with the liquid level, keeping the float ball switch valve 12 in the closed state and not interfering with the operation of the water pump. 3. Abnormal operating condition handling phase When the liquid level drops to near the minimum safe level, the non-contact liquid level sensor 6 detects the signal and immediately sends an alarm to the external control system, such as an audible and visual alert or a text message notification, to remind staff to troubleshoot the fault, such as cleaning the filter or checking the water level in the sludge removal tank. At the same time, the control pump 11 is switched off to stop it. If the liquid level drops to the threshold value that triggers the float switch valve 12, the float 13 decreases with the liquid level, triggering the internal contacts of the float switch valve 12 to open, cutting off the power supply circuit to the water pump 11 and causing the water pump 11 to stop immediately, preventing it from running dry. Both the non-contact liquid level sensor 6 and the float switch valve 12 have the function of controlling the water pump 11 to stop and prevent it from running dry. In actual operation, to avoid failure of either one, a double safety linkage of non-contact and contact valves is used.

[0036] 4. Shutdown Phase Normal shutdown: When it is necessary to stop the recycling, first close the inlet valve of the pump pipe 2 if there is one, then close the valve 41 on the outlet pipe 4, and finally stop the operation of the water pump 11; Restarting after a fault shutdown: After troubleshooting the fault, such as cleaning the filter and repairing the pipeline, first confirm that the liquid level in the sealing cylinder 1 has returned to the normal range, then close the float switch valve 12 circuit, restart the water pump 11, repeat step 3 of the "siphon operation stage", and restore clean water recovery.

[0037] Finally, it should be noted that the electronic components in the water pump 11 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order of each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A siphon device for clear water recovery in a sludge dewatering tank, comprising a sealed cylinder (1), characterized in that: The top of the sealing cylinder (1) is provided with two independent branch pipes, namely a water pumping pipe (2) and a water supply pipe. The water pumping pipe (2) is connected to the clear water area in the sludge removal tank (3) through a sealed water pipe. A water pump (11) is connected to one side of the bottom of the sealing cylinder (1). A liquid level pipe (5) for observing the liquid level in the sealing cylinder (1) is fixedly installed on the side wall of the sealing cylinder (1). A non-contact liquid level sensor (6) is fixedly installed on the outer side wall of the liquid level pipe (5). The non-contact liquid level sensor (6) is electrically connected to the control module of the water pump (11).

2. The siphon device for clear water recovery in the sludge dewatering tank according to claim 1, characterized in that: A float switch valve (12) is installed on the upper side wall of the sealing cylinder (1). The float switch valve (12) is connected to the water pump (11) and controls the water pump (11) to stop. When the float (13) on the float switch valve (12) drops with the liquid level, the float switch valve (12) is disconnected, thereby stopping the water pump (11) to avoid the water pump (11) running dry due to insufficient water in the sealing cylinder (1).

3. The siphon device for clear water recovery in the sludge dewatering tank according to claim 1, characterized in that: The non-contact liquid level sensor (6) monitors the liquid level inside the sealed cylinder (1). When the liquid level drops to a preset height, it sends a signal to the external control system to trigger an alarm.

4. The siphon device for clear water recovery in the sludge dewatering tank according to claim 1, characterized in that: A filter for filtering tailings impurities is also fixedly installed on the pumping pipe (2). The filter has a filtration accuracy of 50-100 mesh, and the inlet end of the filter faces the clear water area of ​​the sludge removal tank (3).

5. The siphon device for clear water recovery in the sludge dewatering tank according to claim 1, characterized in that: The liquid level tube (5) is fixedly installed on the side wall of the sealing cylinder (1) in a vertical direction, and the distance between the lower end of the liquid level tube (5) and the bottom of the sealing cylinder (1) is 5-10cm, and the distance between the upper end of the liquid level tube (5) and the top of the sealing cylinder (1) is 20-30cm, so as to completely cover the effective liquid level observation range inside the sealing cylinder (1).

6. The siphon device for clear water recovery in the sludge dewatering tank according to claim 1, characterized in that: The non-contact liquid level sensor (6) is an ultrasonic liquid level sensor or an infrared liquid level sensor, and the detection end of the sensor is closely attached to the outer wall of the sight glass. The detection position of the non-contact liquid level sensor (6) corresponds to the preset minimum safe liquid level in the cylinder.

7. The siphon device for clear water recovery in the sludge dewatering tank according to claim 1, characterized in that: The outlet end of the water pump (11) is connected to the outlet pipe (4), and a valve (41) is installed on the outlet pipe (4); the top of the sealing cylinder (1) is connected to the pumping pipe (2) through the inlet (16).

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