Sludge collection and transfer system for adjusting sedimentation tank

Abstract

The invention discloses a system for adjusting collection and transfer of sludge in a sedimentation tank. The system comprises a sludge homogenizing and pushing system, a sludge transfer and conveying system and an electric control system, the sludge homogenizing and pushing system is arranged on one side of the bottom of the adjusting sedimentation tank in the length direction of the adjusting sedimentation tank, the sludge transferring and conveying system is arranged along a bottom mud groove of the adjusting sedimentation tank and is in butt joint with the pushing tail end of the sludge homogenizing and pushing system, and the electric control system is installed in a control machine room beside the adjusting sedimentation tank. And the sludge conveying system is electrically connected with the sludge homogenizing and pushing system and the sludge transferring and conveying system through cables. The sludge separation and transfer efficiency is remarkably improved, the mode of'primary collection of a direct pushing machine and secondary grading collection of a bidirectional sludge collection machine 'is adopted, no sludge scraping dead angle exists, the efficiency is improved by 30-50% compared with that of traditional single-stage collection equipment, and the sludge separation rate is larger than or equal to 99%.

Description

Technical Field

[0001] This invention relates to the field of mine water treatment equipment technology, and specifically to a sludge collection and transfer system suitable for the pre-sedimentation and adjustment unit of a high suspended solids mine water treatment system. Background Technology

[0002] High-suspended-solids mine water treatment systems commonly employ processes such as coagulation sedimentation, supermagnetic separation, and high-efficiency cyclone separation. The regulating sedimentation tank, as the first unit of the system, plays a crucial role in regulating water volume, homogenizing water quality, and settling easily sedimentable inorganic particles. Currently, sludge collection and transfer in regulating sedimentation tanks mainly rely on a combination of a gantry-type scraper and a sludge pump or a scraper-suction machine. However, this system suffers from several technical defects in actual operation: 1. Poor operational efficiency: Traditional equipment operates in a single-stage sludge collection mode, using intermittent operation, which easily creates dead zones in the scraping process, resulting in incomplete sludge separation and large accumulations at the bottom of the sedimentation tank. 2. Severe equipment wear: Mine water sludge contains high-hardness inorganic particles, making the scraper blades and transmission mechanisms of traditional equipment prone to wear and jamming, leading to frequent equipment damage and a large maintenance workload. 3. Insufficient hydraulic retention time: Design specifications require a hydraulic retention time (HRT) of 4-8 hours for regulating sedimentation tanks, but traditional equipment typically operates at an HRT of less than 1 hour, failing to achieve effective sedimentation. Therefore, there is an urgent need to develop a mature and efficient sludge collection and transfer system to replace traditional equipment and meet the needs of economical and stable operation of the pre-sedimentation and adjustment unit of the mine water treatment system. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a sludge collection and transfer system for regulating sedimentation tanks, which achieves efficient collection and transfer of sludge settled in pre-sedimentation regulating tanks, with a sludge separation rate of ≥99%, restores the design function of regulating sedimentation tanks, reduces operation and maintenance costs, and meets the needs of mine safety production, energy conservation and emission reduction, and comprehensive resource utilization.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sludge collection and transfer system for a regulating sedimentation tank, comprising a sludge homogenizing and pushing system, a sludge transfer and conveying system, and an electrical control system; the sludge homogenizing and pushing system is arranged along the length of the regulating sedimentation tank on one side of the tank bottom, the sludge transfer and conveying system is arranged along the sludge trough at the bottom of the tank and is connected to the pushing end of the sludge homogenizing and pushing system, and the electrical control system is installed in a control room next to the regulating sedimentation tank and is electrically connected to the sludge homogenizing and pushing system and the sludge transfer and conveying system via cables; the sludge homogenizing and pushing system uniformly pushes the settled sludge at the bottom of the tank to the sludge transfer and conveying system in the sludge trough, and the sludge transfer and conveying system selectively conveys sludge according to the sludge particle size ratio.

[0005] Furthermore, the sludge homogenizing and feeding system includes a sludge direct pusher 10 and a power pack; The sludge direct pusher consists of a drive cylinder, a traveling rail, side baffles, side plates, a sludge bucket, a drive cylinder seat, and sealing components. The traveling rail is horizontally fixed to one side of the bottom of the sedimentation tank along its length, with both ends fixedly connected to the tank wall. The sludge bucket is U-shaped. The sludge bucket has a groove structure, with its bottom slidably engaged with the traveling rail via a slider, and a sealing element provided between the slider and the traveling rail. Two side plates are vertically fixed to the two end faces of the sludge bucket, with the height of the side plates exceeding the height of the sludge bucket's opening. Two side guards are fixed parallel to the traveling rail to the bottom of the tank, located on the outer sides of the sludge bucket, with a gap between the side guards and the side plates. The drive cylinder 1 is vertically fixed to the outer wall of the regulating sedimentation tank, with its installation height matching the horizontal height of the traveling rail. The drive cylinder 1 is a double-acting hydraulic cylinder, with its cylinder body hinged to the drive cylinder 1 seat via a pin, and the piston rod end fixedly connected to the middle of the rear end of the sludge bucket via a flange. The power unit is fixed to a base on the ground outside the regulating sedimentation tank and connected to the inlet and outlet of the drive cylinder 1 via hydraulic oil pipes. The sludge pusher reciprocates by pushing sludge, with the pushing end aligned with the sludge trough at the bottom of the tank. The power pack includes a hydraulic pump, a solenoid directional valve, a relief valve, a hydraulic lock, an oil tank, an oil filter, a pressure gauge, and a circulating oil circuit. The oil tank is a vertical, sealed structure fixed to the bottom of the power pack's equipment frame. The hydraulic pump is mounted on a mounting flange on the top of the oil tank, and its suction port extends into the tank via a suction pipe connected in series with the oil filter. The solenoid directional valve, relief valve, and hydraulic lock are integrated onto an integrated valve block, which is fixed to the equipment frame on one side of the oil tank, below the hydraulic pump. The hydraulic pump's outlet is connected to a high-pressure oil pipe... The oil inlet of the integrated valve block is connected, and the overflow valve is connected in parallel to the oil inlet branch of the integrated valve block; the two working oil ports of the electromagnetic reversing valve are connected to the rodless chamber and rod chamber inlet and outlet ports of the drive cylinder 1 respectively through high-pressure oil pipes, and the hydraulic locks are connected in series on the pipelines between the two working oil ports and the drive cylinder; the pressure gauge is installed on the pressure detection port of the integrated valve block through a pressure testing connector; the circulating oil circuit includes a return oil pipe and a cooler, the return oil port of the integrated valve block is connected to the return oil port of the oil tank through the return oil pipe, the cooler is connected in series on the return oil pipe, and the connection of each oil pipe is sealed with a sealing joint.

[0006] Furthermore, the sludge transfer and conveying system includes a bidirectional sludge collector, a sludge transfer machine, and a vortex sludge pump. The bidirectional sludge collector is arranged along the entire length of the sludge trough at the bottom of the tank, with its feed end corresponding to the sludge pushing path of the sludge direct pusher, and its discharge ends facing the sludge transfer machine and the vortex sludge pump respectively. The sludge transfer machine is a scoop structure with an aperture, installed at 90° at the end of the sludge trough at the inlet of the regulating sedimentation tank, with its feed inlet connected to the first discharge port of the bidirectional sludge collector, and its discharge port connected to the sludge thickening tank via a chute. The vortex sludge pump is installed at the bottom of the sludge trough at the outlet of the regulating sedimentation tank, with its feed inlet connected to the second discharge port of the bidirectional sludge collector, and its discharge port connected to the sludge thickening tank via a pipe.

[0007] Furthermore, the electrical control system includes two power cabinets and one PLC control cabinet, all installed in the control room next to the sedimentation tank. The power cabinets are electrically connected to the drive cylinder 1 of the sludge direct pusher 10, the hydraulic pump of the power pack, the drive mechanism of the bidirectional sludge collector, the drive mechanism of the sludge transfer machine 8, and the motor of the vortex sludge pump 9 via power cables. The PLC control cabinet is connected to the control elements of each device via control cables and interconnected with the water treatment main control DCS via Ethernet communication.

[0008] Furthermore, the system adopts a two-stage sludge collection mode. In the first stage, the sludge is pushed and collected into the sludge trough without dead angles along the length of the pool bottom by the sludge pusher 10. In the second stage, the sludge is selectively collected into the sludge trough according to the particle size by the bidirectional sludge collector and then transferred to the corresponding conveying equipment.

[0009] Furthermore, the sludge direct pusher is driven by a linear hydraulic system, and its power density is 10-15 times that of an electric motor drive.

[0010] Furthermore, after the system is put into use, the hydraulic retention time (HRT) of the sedimentation tank is adjusted back to 4-8 hours, and the concentration of suspended solids (SS) in the effluent is controlled at 90-135 mg / L.

[0011] Furthermore, the system is suitable for the pre-sedimentation adjustment unit of a high-suspended-solids mine water treatment system.

[0012] The beneficial effects of this invention are as follows: 1. Significantly improved sludge separation and transfer efficiency: Adopting a "direct-push primary collection + bidirectional sludge collection secondary stage collection" mode, there are no dead angles for sludge scraping, increasing efficiency by 30-50% compared to traditional single-stage collection equipment, with a sludge separation rate ≥99%. 2. Restoration of the design function of the regulating sedimentation tank: After system operation, the hydraulic retention time (HRT) of the regulating sedimentation tank is restored to 4-8 hours. 3. Reduced operation and maintenance costs: With no easily damaged sludge scraping parts, the equipment failure rate is low, and the regulating sedimentation tank does not require frequent cleaning due to sludge accumulation. Based on a treatment scale of 5000 m³ / d, annual savings in cleaning and equipment maintenance costs are approximately 200,000 RMB. 4. Support for automatic control and remote monitoring, seamlessly integrating with the water treatment main control DCS, reducing manual intervention and adapting to the needs of automated production in mines. Attached Figure Description

[0013] Figure 1 Yes; a schematic diagram of the structure of a sludge collection and transfer system for a sedimentation tank according to the present invention.

[0014] Figure 2 Yes; Schematic diagram of the sludge direct pusher structure of the present invention.

[0015] Figure 3 Yes; a schematic diagram of the sludge direct-drive machine of this invention.

[0016] The labels in the diagram are as follows: 1. Drive cylinder, 2. Traveling cabinet, 3. Sludge bucket, 4. Drive cylinder seat, 5. Traveling rail side guard, 6. Traveling rail side plate, 7. Two-way sludge machine, 8. Sludge transfer machine, 9. Vortex sludge pump, 10. Sludge direct pusher. Detailed Implementation

[0017] A sludge collection and transfer system for an equalization sedimentation tank includes a sludge homogenizing and pushing system, a sludge transfer and conveying system, and an electrical control system. The sludge homogenizing and pushing system is arranged along the length of the equalization sedimentation tank on one side of the tank bottom. The sludge transfer and conveying system is arranged along the sludge trough at the bottom of the tank and is connected to the pushing end of the sludge homogenizing and pushing system. The electrical control system is installed in a control room next to the equalization sedimentation tank and is electrically connected to the sludge homogenizing and pushing system and the sludge transfer and conveying system via cables. The sludge homogenizing and pushing system pushes the settled sludge at the bottom of the tank to the sludge transfer and conveying system in the sludge trough at a uniform speed. The sludge transfer and conveying system selectively conveys sludge according to the sludge particle size ratio.

[0018] Furthermore, the sludge homogenizing and feeding system includes a sludge direct pusher 10 and a power pack; The sludge direct pusher 10 consists of a drive cylinder 1, a traveling rail, side baffles, side plates, a sludge bucket 3, a drive cylinder 1 base, and sealing components. The traveling rail is horizontally fixed to one side of the bottom of the sedimentation tank along its length, and its two ends are fixedly connected to the tank wall. The sludge bucket 3 is U-shaped. The sludge bucket 3 has a groove structure, with its bottom slidingly engaged with the traveling rail via a slider, and a sealing element provided between the slider and the traveling rail. Two side plates are vertically fixed to the two end faces of the sludge bucket 3, with the height of the side plates exceeding the height of the sludge bucket 3's groove opening. Two side guards are fixed parallel to the traveling rail to the bottom of the tank, located on the outer sides of the sludge bucket 3, with a gap between the side guards and the side plates. The drive cylinder 1 is vertically fixed to the outer wall of the regulating sedimentation tank, with its installation height matching the horizontal height of the traveling rail. The drive cylinder 1 is a double-acting hydraulic cylinder, with its tail hinged to the drive cylinder 1 via a pin, and the piston rod end fixedly connected to the middle of the rear end of the sludge bucket 3 via a flange. The power unit is fixed to a base on the ground outside the regulating sedimentation tank and connected to the inlet and outlet of the drive cylinder 1 via hydraulic oil pipes. The sludge pusher 10 reciprocates by pushing sludge, with the pushing end aligned with the sludge trough at the bottom of the tank. The power pack includes a hydraulic pump, a solenoid directional valve, a relief valve, a hydraulic lock, an oil tank, an oil filter, a pressure gauge, and a circulating oil circuit. The oil tank is a vertical, sealed structure fixed to the bottom of the power pack's equipment frame. The hydraulic pump is mounted on a mounting flange on the top of the oil tank, and its suction port extends into the tank via a suction pipe connected in series with the oil filter. The solenoid directional valve, relief valve, and hydraulic lock are integrated onto an integrated valve block, which is fixed to the equipment frame on one side of the oil tank, below the hydraulic pump. The hydraulic pump's outlet is connected to the power pack via a high-pressure oil pipe. The oil inlet of the integrated valve block is connected, and the overflow valve is connected in parallel to the oil inlet branch of the integrated valve block; the two working oil ports of the electromagnetic reversing valve are connected to the rodless chamber and rod chamber inlet and outlet ports of the drive cylinder 1 respectively through high-pressure oil pipes, and the hydraulic locks are connected in series on the pipelines between the two working oil ports and the drive cylinder 1; the pressure gauge is installed on the pressure detection port of the integrated valve block through a pressure testing connector; the circulating oil circuit includes a return oil pipe and a cooler, the return oil port of the integrated valve block is connected to the return oil port of the oil tank through the return oil pipe, the cooler is connected in series on the return oil pipe, and the connection of each oil pipe is sealed with a sealing joint.

[0019] Furthermore, the sludge transfer and conveying system includes a bidirectional sludge collector, a sludge transfer machine 8, and a vortex sludge pump 9. The bidirectional sludge collector is arranged along the entire length of the sludge trough at the bottom of the tank, with its feed end corresponding to the sludge pushing path of the sludge direct pusher 10, and its discharge ends facing the sludge transfer machine 8 and the vortex sludge pump 9, respectively. The sludge transfer machine 8 is a scoop structure with an aperture, installed at 90° at the end of the sludge trough at the inlet of the regulating sedimentation tank. Its feed inlet is connected to the first discharge port of the bidirectional sludge collector, and its discharge port is connected to the sludge thickening tank through a chute. The vortex sludge pump 9 is installed at the bottom of the sludge trough at the outlet of the regulating sedimentation tank, with its feed inlet connected to the second discharge port of the bidirectional sludge collector, and its discharge port is connected to the sludge thickening tank through a pipe.

[0020] Furthermore, the electrical control system includes two power cabinets and one PLC control cabinet, all installed in the control room next to the sedimentation tank. The power cabinets are electrically connected to the drive cylinder 1 of the sludge direct pusher 10, the hydraulic pump of the power pack, the drive mechanism of the bidirectional sludge collector, the drive mechanism of the sludge transfer machine 8, and the motor of the vortex sludge pump 9 via power cables. The PLC control cabinet is connected to the control elements of each device via control cables and interconnected with the water treatment main control DCS via Ethernet communication.

[0021] Furthermore, the system adopts a two-stage sludge collection mode. In the first stage, the sludge is pushed and collected into the sludge trough without dead angles along the length of the pool bottom by the sludge pusher 10. In the second stage, the sludge is selectively collected into the sludge trough according to the particle size by the bidirectional sludge collector and then transferred to the corresponding conveying equipment.

[0022] Furthermore, the sludge direct pusher 10 is driven by a linear hydraulic system, and its power density is 10-15 times that of an electric motor drive.

[0023] Furthermore, after the system is put into use, the hydraulic retention time (HRT) of the sedimentation tank is adjusted back to 4-8 hours, and the concentration of suspended solids (SS) in the effluent is controlled at 90-135 mg / L.

[0024] Furthermore, the system is suitable for the pre-sedimentation adjustment unit of a high-suspended-solids mine water treatment system.

[0025] Specific implementation methods for sludge particle size detection: An online laser particle size analyzer (measurement range 0.1μm-10mm, measurement accuracy ±2%) is used and installed in the middle of the sludge trough of the sedimentation tank (between the pushing end of the sludge pusher 10 and the feeding end of the bidirectional sludge collector). The analyzer probe extends into the sludge tank through a pre-drilled mounting hole in the tank wall. The distance between the probe tip and the bottom of the sludge tank is 200-300mm. A protective sleeve (made of wear-resistant ceramic) is installed on the outside of the probe to prevent sludge abrasion. The analyzer main unit is installed in the control room, adjacent to the PLC control cabinet. The online particle size analyzer is connected to the PLC control cabinet via an RS485 communication line to collect sludge particle size distribution data in real time (outputting one set of test results every 5 minutes). When the proportion of particles with a diameter ≥2mm exceeds 30% or the proportion of particles with a diameter ≤2mm exceeds 30%, the PLC control cabinet automatically sends a reversing signal to the reversing mechanism of the bidirectional sludge collector to switch the sludge collection direction. At the same time, the particle size data is uploaded to the water treatment main control DCS via Ethernet for real-time monitoring.

[0026] The workflow of this invention is as follows: When mine water remains in the settling tank, easily settled inorganic particles settle to the bottom of the tank. The electrical control system starts the sludge homogenization and feeding system. The sludge pusher 10 pushes the sludge at the bottom of the pool at a speed of 0.05m / s along the walking rail. The side plates and side baffles work together to prevent sludge from leaking to the side and collect the sludge in the sludge trough at the bottom of the pool. After the sludge pusher 10 pushes the sludge into the sludge tank, it returns to the tank wall at the same speed through the hydraulic oil circuit of the power pack, completing one sludge pushing cycle. The bidirectional sludge collection machine detects the proportion of sludge particle size and guides the sludge to the corresponding conveying equipment according to the detection results: large particle sludge (≥2mm, proportion >30%) is sent to the sludge thickening tank via sludge transfer machine 8 through a chute; small particle sludge (≤2mm, proportion >30%) is pumped to the sludge thickening tank via vortex sludge pump 9. The electrical control system monitors the operating status of each device in real time and enables remote operation and parameter adjustment through DCS to ensure stable system operation. Example

[0027] A mine water treatment system has a capacity of 5000 m³ / d. The regulating sedimentation tank measures 50 m long × 10 m wide × 4 m deep. When the traditional gantry crane-type sludge scraper is in operation, sludge accumulates severely, the effluent SS concentration is 1200 mg / L, the HRT is only 0.8 h, and the annual maintenance and cleaning cost is 250,000 yuan.

[0028] After adopting the system of the present invention: sludge homogenization and feeding system: sludge direct pusher 10 is arranged along the length of the sedimentation tank, with a travel rail length of 50m, drive cylinder 1 stroke of 48m, feeding speed of 0.05m / s, power package hydraulic pump rated pressure of 16MPa, flow rate of 50L / min.

[0029] Sludge transfer and conveying system: bidirectional sludge collector with a length of 50m, 8 sludge transfer machines with a skip diameter of 2mm, 9 vortex sludge pumps with a rated flow rate of 80m³ / h and a head of 15m.

[0030] Electrical control system: The power cabinet has a rated current of 200A, and the PLC control cabinet adopts Siemens S7-300 series, which communicates with the water treatment DCS via Ethernet.

[0031] Detection and control system: The online particle size analyzer has a measurement range of 0.1μm-10mm and is installed in the middle of the mud tank; the power cabinet has a rated current of 200A, and the PLC control cabinet adopts Siemens S7-300 series, which communicates with the water treatment DCS via Ethernet; Operational results: sludge separation rate of 99.2%, HRT of sedimentation tank restored to 6h, effluent SS concentration stabilized at 100-120mg / l, annual maintenance and cleaning costs reduced to 50,000 yuan, equipment operation stable, and no downtime due to malfunctions. Example

[0032] A mine water treatment system with a capacity of 8000 m³ / d has a sedimentation tank with dimensions of 60 m long × 12 m wide × 4.5 m deep. The traditional sludge scraper frequently jams during operation, requiring maintenance twice a month on average, and the effluent SS concentration is 900-1300 mg / L.

[0033] After adopting the system of this invention: The sludge direct pusher has a 10-track walking rail with a length of 60m, a drive cylinder with a stroke of 58m, a pushing speed of 0.05m / s, and a power pack hydraulic pump with a rated pressure of 18MPa and a flow rate of 63L / min. The bidirectional sludge collector is 60m long, the sludge transfer machine has 8 skips with a 2mm orifice diameter, and the vortex sludge pump has 9 rated flow rates of 120m³ / h and a head of 18m. Detection and control system: The online particle size analyzer has a measurement range of 0.1μm-10mm and is installed in the middle of the mud tank; the power cabinet has a rated current of 250A, and the PLC control cabinet adopts Siemens S7-400 series, which communicates with the water treatment DCS via Ethernet; Operational results: sludge separation rate of 99.5%, HRT of sedimentation tank restored to 7h, effluent SS concentration of 95-130mg / l, equipment operated continuously for 6 months without failure, and monthly maintenance costs reduced by 80%.

[0034] The above embodiments demonstrate that the system of the present invention can effectively solve the technical defects of traditional sludge collection equipment, significantly improve the operating efficiency and effluent quality of the regulating sedimentation tank, reduce operating and maintenance costs, and is suitable as a pre-sedimentation regulating unit for various high suspended solids mine water treatment systems.

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A sludge collection and transfer system for a sedimentation tank, characterized in that, The system includes a sludge homogenizing and pushing system, a sludge transfer and conveying system, and an electrical control system. The sludge homogenizing and pushing system is arranged along the length of the equalization sedimentation tank on one side of the tank bottom. The sludge transfer and conveying system is arranged along the sludge trough at the bottom of the tank and is connected to the pushing end of the sludge homogenizing and pushing system. The electrical control system is installed in a control room next to the equalization sedimentation tank and is electrically connected to the sludge homogenizing and pushing system and the sludge transfer and conveying system via cables. The sludge homogenizing and pushing system pushes the settled sludge at the bottom of the tank to the sludge transfer and conveying system in the sludge trough at a uniform speed. The sludge transfer and conveying system selectively conveys sludge according to the sludge particle size ratio.

2. The sludge collection and transfer system for a regulating sedimentation tank according to claim 1, characterized in that, The sludge homogenizing and feeding system includes a sludge pusher and a power pack; The sludge direct pusher consists of a drive cylinder, a traveling rail, side baffles, side plates, a sludge bucket, a drive cylinder seat, and sealing components. The traveling rail is horizontally fixed to one side of the bottom of the sedimentation tank along its length, with both ends fixedly connected to the tank wall. The sludge bucket is U-shaped. The sludge bucket has a groove structure, with its bottom slidingly engaged with the traveling rail via a slider, and a sealing element between the slider and the traveling rail. Two side plates are vertically fixed to the two end faces of the sludge bucket 3, with the height of the side plates exceeding the height of the sludge bucket's opening. Two side guards are fixed parallel to the traveling rail to the bottom of the tank, located on the outer sides of the sludge bucket, with a gap between the side guards and the side plates. The drive cylinder seat is vertically fixed to the outer wall of the regulating sedimentation tank, with its installation height matching the horizontal height of the traveling rail. The drive cylinder is a double-acting hydraulic cylinder, with its cylinder tail hinged to the drive cylinder seat via a pin, and the piston rod end fixedly connected to the middle of the rear end of the sludge bucket via a flange. The power unit is fixed to a base on the ground outside the regulating sedimentation tank and connected to the inlet and outlet of the drive cylinder via hydraulic oil pipes. The sludge pusher reciprocates by pushing sludge, with the pushing end aligned with the sludge trough at the bottom of the tank. The power pack includes a hydraulic pump, a solenoid directional valve, a relief valve, a hydraulic lock, an oil tank, an oil filter, a pressure gauge, and a circulating oil circuit. The oil tank is a vertical, sealed structure fixed to the bottom of the power pack's equipment frame. The hydraulic pump is mounted on a mounting flange on the top of the oil tank, and its suction port extends into the tank via a suction pipe connected in series with the oil filter. The solenoid directional valve, relief valve, and hydraulic lock are integrated onto an integrated valve block, which is fixed to the equipment frame on one side of the oil tank, below the hydraulic pump. The hydraulic pump's outlet is connected to a high-pressure oil pipe... The oil inlet of the integrated valve block is connected, and the overflow valve is connected in parallel to the oil inlet branch of the integrated valve block; the two working oil ports of the electromagnetic reversing valve are connected to the rodless chamber and rod chamber inlet and outlet ports of the drive cylinder respectively through high-pressure oil pipes, and the hydraulic locks are connected in series on the pipelines between the two working oil ports and the drive cylinder; the pressure gauge is installed on the pressure detection port of the integrated valve block through a pressure testing connector; the circulating oil circuit includes a return oil pipe and a cooler, the return oil port of the integrated valve block is connected to the return oil port of the oil tank through the return oil pipe, the cooler is connected in series on the return oil pipe, and the connection of each oil pipe is sealed with a sealing joint.

3. The sludge collection and transfer system for a sedimentation tank according to claim 1, characterized in that: The sludge transfer and conveying system includes a bidirectional sludge collector, a sludge transfer machine, and a vortex sludge pump. The bidirectional sludge collector is arranged along the entire length of the sludge trough at the bottom of the tank. Its feed end corresponds to the sludge pushing path of the sludge direct pusher, and its discharge end faces the sludge transfer machine and the vortex sludge pump, respectively. The sludge transfer machine is a scoop structure with apertures, installed at 90° at the end of the sludge trough at the inlet of the regulating sedimentation tank. Its feed inlet is connected to the first discharge port of the bidirectional sludge collector, and its discharge port is connected to the sludge thickening tank through a chute. The vortex sludge pump is installed at the bottom of the sludge trough at the outlet of the regulating sedimentation tank. Its feed inlet is connected to the second discharge port of the bidirectional sludge collector, and its discharge port is connected to the sludge thickening tank through a pipe.

4. The sludge collection and transfer system for a regulating sedimentation tank according to claim 1, characterized in that: The electrical control system includes two power cabinets and one PLC control cabinet, all installed in the control room next to the equalization sedimentation tank. The power cabinets are electrically connected to the drive cylinder of the sludge direct pusher, the hydraulic pump of the power pack, the drive mechanism of the bidirectional sludge collector, the drive mechanism of the sludge transfer machine, and the motor of the vortex sludge pump via power cables. The PLC control cabinet is connected to the control elements of each device via control cables and interconnected with the water treatment main control DCS via Ethernet communication.

5. A sludge collection and transfer system for a regulating sedimentation tank according to any one of claims 1-4, characterized in that, The system adopts a two-stage sludge collection mode. The first stage uses a sludge pusher to push and collect sludge along the length of the pool bottom without dead angles to the sludge trough. The second stage uses a bidirectional sludge collector to selectively collect sludge in the trough according to particle size to the corresponding conveying equipment.

6. A sludge collection and transfer system for a regulating sedimentation tank according to any one of claims 1-4, characterized in that, The sludge direct pusher is driven by a linear hydraulic system, and its power density is 10-15 times that of an electric motor drive.

7. A sludge collection and transfer system for a regulating sedimentation tank according to any one of claims 1-4, characterized in that, After the system is put into use, the hydraulic retention time (HRT) of the sedimentation tank is adjusted back to 4-8 hours, and the concentration of suspended solids (SS) in the effluent is controlled at 90-135 mg / L.

8. A sludge collection and transfer system for a regulating sedimentation tank according to any one of claims 1-4, characterized in that, The system is suitable as a pre-sedimentation and adjustment unit for mine water treatment systems with high suspended solids.

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