Dense medium separation system, a suspension solid-liquid separation device thereof and a method of using the same

Abstract

The application discloses a kind of suspension solid-liquid separation equipment of heavy medium sorting system and its use method, belong to solid-liquid separation technical field.Suspension solid-liquid separation equipment of heavy medium sorting system, including rack, further include: material shell, material shell is fixed in rack, for doping magnetic powder slurry flow, rack is provided with magnetic powder tank at the side of material shell discharge end;Support part, support part includes two symmetrical supports being arranged in the both sides of rack, two supports are fixed with fixed shaft between, fixed shaft is connected with magnetic block by straight bar;And magnetic cylinder, both sides of magnetic cylinder are rotatably connected with same side support by sleeve, sleeve is arranged on the outside of fixed shaft;And drive part;The application improves the recovery efficiency and purity of magnetite powder by optimizing feeding state, improving sorting flow field, strengthening magnetic powder layer purification and realizing efficient energy-saving flushing, while enhancing the stability and economy of equipment operation, effectively solve many problems in traditional magnetic separation process.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid separation technology, and in particular to a suspension solid-liquid separation device and its method of use in a heavy media separation system. Background Technology

[0002] Heavy media separation technology is one of the core processes in the coal preparation industry. It utilizes a suspension of magnetite powder and water as the separation medium to achieve density-based precision separation. In this system, the separated products (clean coal, gangue, etc.) need to be screened to recover the suspension. Most of the high-concentration qualified suspension can be directly recycled, while the dilute suspension (containing cement, fine coal slime, and magnetite powder) generated by water spraying must be purified and recovered through efficient solid-liquid separation equipment to reduce media consumption, control production costs, and reduce the load on the subsequent water treatment system.

[0003] Wet magnetic separators are currently key equipment for solid-liquid separation of dilute suspensions, utilizing magnetic force to recover magnetite powder. However, in actual operation, traditional magnetic separators still face several technical bottlenecks affecting recovery efficiency and economy. First, the feed of dilute suspensions often forms "clumps" due to magnetic agglomeration or mud adhesion between magnetic powders. The magnetic powder inside these clumps cannot be effectively adsorbed by the magnetic field, or when recovered as a whole, it carries a large amount of non-magnetic impurities, resulting in a decrease in both magnetic powder recovery rate and purity. Second, the slurry is prone to laminar flow or the formation of sedimentation dead zones in the separation tank, making it impossible for some magnetic particles to effectively contact the magnetic drum adsorption surface, especially fine magnetic powder, which is easily lost with tailings. Furthermore, the magnetic powder layer already adsorbed on the surface of the magnetic drum has a dense structure, and traditional fixed flushing water pipes often require high-pressure, high-volume flushing to thoroughly clean the magnetic drum, resulting in flushing dead zones and high energy and water consumption. Summary of the Invention

[0004] This invention addresses the problems of insufficient magnetic powder adsorption due to magnetic powder agglomeration, loss of fine magnetic powder, low magnetic powder purity, and inefficient and high-consumption rinsing in existing heavy media separation systems. Based on the operating conditions of the coal preparation industry and the characteristics of magnetic separation processes, this invention proposes a new heavy media separation system for solid-liquid separation of suspensions and its application method. Through innovative design of the auxiliary powder suction mechanism, the separation flow field is optimized. A single motor drives the magnetic cylinder rotation, dispersing, vibration, and impurity removal components to achieve synchronous operation. Furthermore, a composite motion rinsing mechanism achieves thorough rinsing under moderate water pressure, significantly reducing water and energy consumption. The organic collaboration of each module constructs a highly efficient separation system encompassing optimization, adsorption, purification, and recovery, thereby improving magnetic powder recovery rate and economic efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The heavy media separation system includes a suspension solid-liquid separation device, comprising a frame, and further comprising: A material shell, which is fixed on the frame, is used for the flow of slurry mixed with magnetic powder. A magnetic powder box is provided on one side of the material shell outlet end of the frame. The support part includes two supports symmetrically arranged on both sides of the frame, and a fixed shaft is fixed between the two supports. The fixed shaft is connected to a magnetic block through a straight rod. A magnetic cylinder, wherein both sides of the magnetic cylinder are rotatably connected to the support on the same side via sleeves, and the sleeves are located on the outside of the fixed shaft; And a drive unit, which is mounted on the frame and is used to drive the magnetic cylinder to rotate; The material shell is provided with an auxiliary powder-attracting mechanism to assist the magnetic cylinder in adsorbing magnetic powder. The auxiliary powder-attracting mechanism includes a dispersing component for dispersing the slurry, a vibration component for eliminating laminar flow, and a decontamination component for removing impurities from the magnetic particle layer on the outside of the magnetic cylinder.

[0006] Preferably, the drive unit includes a gearbox fixed on the frame, a drive motor fixed on the gearbox, a first synchronous pulley disposed on the sleeve and the output shaft of the gearbox, and a first synchronous belt disposed between the two first synchronous pulleys; The output shaft of the drive motor is connected to the input shaft of the gearbox.

[0007] Preferably, a fixed partition is fixedly installed inside the material shell, and a feeding chute is formed between the fixed partition and the material shell. A counterflow trough for the slurry to move in the opposite direction to the magnetic cylinder is formed between the fixed partition and the magnetic cylinder. A high-level trough is formed between the material shell and the magnetic cylinder. The horizontal height of the high-level trough is higher than that of the counterflow trough. A discharge trough for collecting the slurry after the magnetic powder is removed is formed inside the fixed partition. A discharge channel penetrating the bottom of the material shell is provided at the bottom of the discharge trough.

[0008] Preferably, the dispersing component includes a first rotating rod rotatably disposed in the feeding chute and a crushing plate evenly disposed on the first rotating rod in a circular pattern; The crushing plate includes a main frame fixedly connected to the first rotating rod and a fixed filter screen fixedly installed in the main frame. An elastic element is fixedly installed on the main frame, and a movable filter screen is fixedly installed at the end of the elastic element away from the main frame. The end of the first rotating rod is provided with a timing pulley that is slidably connected to the first timing belt.

[0009] Preferably, the fixed partition includes a main partition and a movable partition movably disposed on the main partition. The main partition has a movable groove for the movable partition to move, and a flexible sealing membrane is disposed between the movable groove and the main partition.

[0010] Preferably, the vibration assembly includes a second rotating rod disposed within a fixed partition and rotatably connected to the material shell, an eccentric shaft disposed on the second rotating rod, a movable ring sleeved on the eccentric shaft, and a movable rod fixedly connected to the movable ring, wherein the end of the movable rod away from the movable ring is movably connected to the movable partition. The end of the second rotating rod is provided with a second synchronous pulley that is slidably connected to the first synchronous belt.

[0011] Preferably, the impurity removal component includes a third rotating rod disposed between the counterflow trough and the high-level trough and rotatably connected to the material shell, and a plurality of material feeding components evenly disposed on the third rotating rod in a circular pattern; Each set of the feeding components includes a mounting strip arranged along the axial direction of the third rotating rod and a number of feeding pins equidistantly arranged on the mounting strip. The feeding pins on adjacent sets of the feeding components are staggered along the axial direction of the third rotating rod. The end of the third rotating rod is provided with a synchronous pulley three that is slidably connected to the first synchronous belt.

[0012] Preferably, the frame has rinsing pipes installed on both sides above the magnetic powder box via support plates. Several nozzles are evenly spaced on the rinsing pipes, and the rinsing pipes are connected to a water supply device via flexible hoses.

[0013] Preferably, a reciprocating screw is rotatably mounted on one of the support plates via a bearing, a driven gear is mounted at the end of the reciprocating screw, the output shaft of the gearbox is connected to a driving gear that meshes with the driven gear, a sleeve is threaded onto the reciprocating screw, the sleeve is connected to a rotary joint via a connecting rod, and the rotary joint is connected to one end of the flushing pipe. A connecting plate is fixedly mounted on the support plate that is rotatably connected to the reciprocating lead screw, and a fixing rod is fixedly mounted on the connecting plate. A corrugated groove that cooperates with the fixing rod is opened on the outer wall of the flushing pipe.

[0014] The present invention also discloses a method of using a suspension solid-liquid separation device according to the aforementioned heavy media separation system, comprising the following steps: S1: Preparation and Startup Connect the power supply and water supply lines to ensure that the water supply equipment for the drive motor and flushing pipe can be used normally; When the drive motor is started, after the gearbox reduces speed and increases torque, it drives the magnetic cylinder to rotate at a constant speed through the first synchronous pulley and the first synchronous belt; on the other hand, the output shaft of the gearbox drives the reciprocating screw to rotate through the driving gear and the driven gear. S2: Feeding and sorting: The dilute suspension slurry containing magnetite powder to be recovered is fed into the feed chute from the feed inlet of the sludge. The slurry first passes through the dispersing component, where the rotating crushing plate breaks up any agglomerates. Then, it flows evenly into the countercurrent chute. In the countercurrent chute, the slurry surface submerges the adsorption zone at the bottom of the magnetic cylinder. Due to the magnetic field generated by the fixed magnetic blocks inside the magnetic cylinder, the magnetic magnetite powder in the slurry is adsorbed onto the surface of the rotating magnetic cylinder. The non-magnetic material, as tailings, flows against the direction of rotation of the magnetic cylinder through the channel at the bottom of the fixed baffle into the discharge chute. Finally, it is discharged through the discharge channel and enters the subsequent water treatment system. During this process, the vibration component works continuously to eliminate laminar flow at the tank wall; the de-pilling pin of the impurity removal component gently agitates the magnetic powder layer on the surface of the magnetic cylinder to help release entrained non-magnetic impurities; S3: Media Recovery and Purification As the magnetic cylinder adsorbed with magnetite powder rotates, it gradually detaches from the slurry surface and enters the high-level tank area for initial dehydration. When the magnetic cylinder rotates to the bottom of the flushing pipe, the nozzles that move axially and swing up and down spray water mist to completely wash the magnetic powder off the surface of the magnetic cylinder and drop it into the magnetic powder box below, thus completing the recycling. S4: Shutdown: Stop feeding and wait until the slurry in the hopper is basically emptied before continuing to run the equipment for a period of time, while keeping the flushing water running to clean the magnetic cylinder and the inside of the equipment. Turn off the drive motor and water supply to complete the entire operation process.

[0015] Compared with the prior art, the present invention provides a suspension solid-liquid separation device and its usage method for a heavy media separation system, which has the following beneficial effects: 1. In this invention, the clumps in the slurry are broken up by the crushing plate driven by the first rotating rod. Its flexible design (movable filter and elastic element) can self-clean and prevent clogging while breaking up the clumps, ensuring that the slurry is evenly dispersed and that the magnetic powder particles are fully exposed to the magnetic field. This creates the preconditions for efficient adsorption and solves the problem in traditional equipment where the feed agglomerates, causing the internal magnetic powder to be unable to be adsorbed or impurities to be trapped during overall recovery. This effectively improves the magnetic powder recovery rate and purity.

[0016] 2. In this invention, the moving baffle is driven by the vibration assembly (second rotating rod, eccentric shaft, moving rod) to generate low-frequency micro-vibration. This vibration gently eliminates laminar flow at the tank wall, prevents particle deposition, and keeps all particles in a suspended state, providing additional power for the magnetic particles to migrate to the magnetic cylinder. This significantly improves the recovery rate of fine magnetic powder and solves the problem that laminar flow and deposition of slurry cause fine magnetic powder to fail to effectively contact the surface of the magnetic cylinder and be lost with the tailings.

[0017] 3. In this invention, the third rotating rod of the impurity removal component drives the dial needle to gently agitate the magnetic powder layer on the surface of the magnetic cylinder. This action can break the magnetic chain structure that encapsulates impurities, release and remove non-magnetic impurities, and realize dynamic purification of the magnetic powder layer during the adsorption process. This directly improves the purity of the recovered magnetite powder and solves the problem in the prior art that the adsorbed magnetic powder layer has a dense structure, is easy to encapsulate non-magnetic mud, and reduces the quality of the recovery medium.

[0018] 4. In this invention, the flushing pipe is driven by a reciprocating screw and a corrugated groove mechanism to perform axial reciprocating movement and pitching swing. This composite motion causes the nozzle to form a spiral cleaning trajectory, achieving a thorough, all-encompassing flushing of the magnetic cylinder surface without dead angles. This allows for complete ore unloading under relatively low water pressure, significantly saving water and energy consumption. It solves the problems of dead angles in the fixed flushing pipe of the prior art, which require high-pressure and high-volume flushing, resulting in poor effect and high energy consumption.

[0019] 5. In this invention, the dispersing, vibration, impurity removal, rinsing, and magnetic drum rotation are all driven by a single motor through mechanical linkage. The highly integrated pure mechanical linkage ensures strict synchronization of actions, a compact structure, strong adaptability, significantly reduces failure points, and improves operational reliability and stability under harsh working conditions. Compared with existing technologies, it reduces external auxiliary equipment, improves system compactness and industrialization efficiency; and the pure mechanical linkage design reduces reliance on electronic components, adapting to the harsh working conditions of the coal preparation industry; the core moving parts (such as timing belts, gears, and shift needles) are all mature mass-produced parts with long service life and low maintenance costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle; Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 3 ; Figure 5 This is a schematic diagram of the frame structure of the present invention; Figure 6 This is a schematic diagram of the structure of the magnetic cylinder and the material shell of the present invention; Figure 7 This is a partial cross-sectional structural diagram of the shell of the present invention; Figure 8 This is a cross-sectional structural diagram of the magnetic cylinder of the present invention; Figure 9 This is a schematic diagram of the external structure of the first rotating rod of the present invention; Figure 10 This is a cross-sectional structural diagram of the fixed partition of the present invention; Figure 11 This is a schematic diagram of the external structure of the third rotating rod of the present invention; Figure 12 This is a schematic diagram of the drive unit of the present invention; Figure 13 This is a schematic diagram of the external structure of the reciprocating lead screw of the present invention.

[0021] In the diagram: 1. Frame; 101. Support plate; 2. Material shell; 201. Fixed partition plate; 2011. Main partition plate; 2012. Movable partition plate; 2013. Movable trough; 2014. Flexible sealing membrane; 202. Feed chute; 203. Counterflow trough; 204. High-level trough; 205. Discharge trough; 206. Discharge channel; 3. Support unit; 301. Support; 302. Fixed shaft; 303. Magnetic block; 4. Magnetic cylinder; 401. Sleeve; 5. Magnetic powder box; 6. Drive unit; 601. Gearbox; 6011. Drive gear; 602. Drive motor; 603. First synchronous pulley; 604. First synchronous belt; 7. First rotating rod; 701. Crushing plate; 7011. Main frame; 7012. Fixed filter screen; 7013. Elastic element; 7014. Movable filter screen; 702. Synchronous pulley one; 8. Second rotating rod; 801. Eccentric shaft; 802. Movable ring; 803. Movable rod; 804. Synchronous pulley two; 9. Third rotating rod; 901. Material feeding component; 9011. Mounting strip; 9012. Feeding needle; 902. Synchronous pulley three; 10. Flushing pipe; 1001. Nozzle; 1002. Corrugated groove; 11. Reciprocating screw; 111. Driven gear; 112. Sleeve; 1121. Connecting rod; 113. Rotary joint; 12. Connecting plate; 121. Fixed rod. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, this embodiment proposes a suspension solid-liquid separation device for a heavy media separation system, including a frame 1, a material shell 2, a support 3, a magnetic cylinder 4, and a drive unit 6; the material shell 2 is fixed on the frame 1 for the flow of slurry mixed with magnetic powder, and a magnetic powder box 5 is provided on one side of the material shell 2 discharge end of the frame 1 for collecting and recovering magnetic powder; the support 3 includes two supports 301 symmetrically arranged on both sides of the frame 1, and a fixed shaft 302 is fixed between the two supports 301, the fixed shaft 302 being connected by a straight rod. A magnetic block 303 is attached; both sides of the magnetic cylinder 4 are rotatably connected to the support 301 on the same side through a sleeve 401, and the sleeve 401 is set on the outside of the fixed shaft 302; the drive unit 6 is set on the frame 1 and is used to drive the magnetic cylinder 4 to rotate; wherein, the material shell 2 is provided with an auxiliary powder suction mechanism for assisting the magnetic cylinder 4 in adsorbing magnetic powder, the auxiliary powder suction mechanism includes a dispersing component for dispersing slurry, a vibration component for eliminating laminar flow, and a decontamination component for removing impurities from the magnetic particle layer on the outside of the magnetic cylinder 4; Specifically, a dilute suspension slurry containing magnetite powder is fed into the shell 2. The slurry flows along the flow channel inside the shell 2. The slurry first passes through the dispersing component, which breaks up any possible agglomerates and achieves initial homogenization. Then, the slurry flows through the working area near the magnetic cylinder 4. During this process, the vibration component works continuously to eliminate the laminar state of the slurry and promote particle suspension. At the same time, the drive unit 6 drives the magnetic cylinder 4 to rotate around the fixed magnetic block 303. The magnetic particles in the slurry are attracted to the outer surface of the rotating magnetic cylinder 4 under the action of the magnetic field. While the magnetic particles are attracted, the impurity removal component acts on the magnetic particle layer formed on the surface of the magnetic cylinder 4 to remove the non-magnetic impurities it carries. The area of ​​the magnetic cylinder 4 with magnetic powder adsorbed is removed from the slurry surface as it rotates, and the magnetic powder is recovered. The remaining slurry after the magnetic powder is removed is discharged from the outlet end of the shell 2, and the recovered magnetic powder is finally collected in the magnetic powder box 5. By pre-treating the slurry with a dispersing component, the agglomeration of the material is broken, exposing the encapsulated magnetic powder particles and increasing their adsorption opportunities. The vibration component eliminates laminar flow, preventing particle deposition and ensuring that all particles are more fully within the magnetic field's range. These two components work together to create superior conditions for efficient adsorption of magnetic particles, thus significantly improving the recovery rate of magnetic powder and reducing the loss of fine particles. The direct intervention of the impurity removal component allows purification to begin during the magnetic powder adsorption process. It acts physically on the magnetic particle layer on the surface of the magnetic cylinder 4, effectively stripping and removing non-magnetic impurities such as coal slime, thereby directly improving the purity of the magnetic powder ultimately recovered into the magnetic powder box 5 and ensuring the quality of the recovery medium. By integrating the dispersing, laminar flow elimination, and impurity removal functions inside the material shell 2 and combining them with the main magnetic separation structure, it is not simply a matter of superimposing dispersing, vibration, and rinsing functions. Instead, through the flow field optimization component and linkage design, dispersing lays the foundation for adsorption, vibration improves adsorption efficiency, impurity removal ensures adsorption purity, and rinsing achieves efficient recovery. Each function supports the others, forming an organic whole.

[0025] like Figure 1 , Figure 3 , Figure 4 and Figure 12 As shown, in a preferred embodiment, based on the above method, the drive unit 6 further includes a gearbox 601 fixed on the frame 1, a drive motor 602 fixed on the gearbox 601, a first synchronous pulley 603 disposed on the sleeve 401 and the output shaft of the gearbox 601, and a first synchronous belt 604 disposed between the two first synchronous pulleys 603. The output shaft of the drive motor 602 is connected to the input shaft of the gearbox 601; Specifically, the drive motor 602 starts and outputs high-speed rotational power. The power of the drive motor 602 is transmitted to the input shaft of the gearbox 601. The gearbox 601 decelerates and increases the output torque according to the design requirements, and then outputs it from its output shaft. The first synchronous pulley 603 on the output shaft of the gearbox 601 rotates accordingly. Through the transmission of the first synchronous belt 604, it drives another first synchronous pulley 603 installed on the sleeve 401 at the end of the magnetic cylinder 4 to rotate synchronously. Finally, the rotation of the sleeve 401 directly drives the magnetic cylinder 4 to rotate smoothly around the fixed shaft 302 and the magnetic block 303 inside it, and enter the working state. The synchronous belt pulley transmission avoids the noise and impact that may be generated by gear transmission, and also overcomes the slippage phenomenon of ordinary V-belt transmission.

[0026] like Figure 6 , Figure 7 and Figure 10As shown, in a preferred embodiment, based on the above method, a fixed partition 201 is further fixedly installed inside the material shell 2, and a feeding chute 202 is formed between the fixed partition 201 and the material shell 2. This chute is used to guide and constrain the slurry to be processed, so that it flows along a predetermined path to the sorting area. A counterflow trough 203 is formed between the fixed partition 201 and the magnetic cylinder 4 for the slurry to move in the opposite direction to the magnetic cylinder 4. A high-level trough 204 is formed between the material shell 2 and the magnetic cylinder 4. The horizontal height of the high-level trough 204 is higher than that of the counterflow trough 203, so that the slurry cannot accumulate here, providing space for the magnetic cylinder 4 to carry the adsorbed magnetic powder away from the liquid surface for preliminary dewatering, and its structure determines that the flow direction of the slurry is opposite to the rotation direction of the magnetic cylinder 4. A discharge trough 205 for collecting the slurry after the magnetic powder is removed is formed inside the fixed partition 201, and a discharge channel 206 penetrating the bottom of the material shell 2 is provided at the bottom of the discharge trough 205. Specifically, the slurry first enters the feed chute 202 formed by the fixed baffle 201 and the shell 2, and is guided to the inlet of the countercurrent chute 203. Inside the countercurrent chute 203, the slurry flows in the opposite direction to the rotation of the magnetic cylinder 4. Magnetic particles are attracted to the surface of the magnetic cylinder 4 under the influence of the magnetic field and move upwards with it. The slurry level in the countercurrent chute 203 is naturally maintained by the structure. Non-magnetic tailings, flowing in the opposite direction, enter the discharge chute 205 inside the fixed baffle 201 through a specific channel between the fixed baffle 201 and the magnetic cylinder 4. Finally, the material is discharged from the equipment through the discharge channel 206 at the bottom, ensuring that the slurry tailings after the removal of magnetic powder can quickly leave the sorting area, avoiding remixing with magnetic products, and also preventing the accumulation and blockage of tailings in the equipment, thus ensuring the continuity of the process. The magnetic cylinder 4, which adsorbs magnetic powder, enters the high-level tank 204 area as it rotates upward. Since the liquid level in the high-level tank 204 is much lower than here, the magnetic cylinder 4 can carry the magnetic powder away from the slurry surface for preliminary natural dehydration, reducing the water content of the recovered magnetic powder and creating favorable conditions for subsequent washing and unloading.

[0027] like Figure 7 , Figure 9 and Figure 12 As shown, in a preferred embodiment, based on the above method, the dispersing component further includes a first rotating rod 7 rotatably disposed in the feeding chute 202 and a crushing plate 701 uniformly disposed on the first rotating rod 7 in a circular pattern. The shredder plate 701 includes a main frame 7011 fixedly connected to the first rotating rod 7 and a fixed filter screen 7012 fixedly installed in the main frame 7011. An elastic element 7013 is fixedly installed on the main frame 7011. A movable filter screen 7014 is fixedly installed at one end of the elastic element 7013 away from the main frame 7011, so that the movable filter screen 7014 has a certain amount of room to move relative to the fixed filter screen 7012. The end of the first rotating rod 7 is provided with a synchronous pulley 702 that is slidably connected to the first synchronous belt 604. The synchronous pulley obtains power by slidingly engaging with the first synchronous belt 604 of the drive unit 6, thereby driving the first rotating rod 7 to rotate. This eliminates the need for an independent power source for the disintegration assembly, which not only simplifies the equipment structure and reduces manufacturing costs and energy consumption, but also ensures the synchronization between the disintegration action and the rotation speed of the magnetic cylinder 4, enabling the entire system to operate in a coordinated manner. Specifically, during equipment operation, the first synchronous belt 604 of the drive unit 6 drives the synchronous pulley 702 to rotate, which in turn drives the first rotating rod 7 and its crushing plate 701 to rotate at high speed in the feed chute 202. The slurry flowing from the feed chute 202 collides with the rotating crushing plate 701. The lumps in the slurry are initially broken up by the impact of the crushing plate 701. The broken slurry then needs to pass through a double-layer filter screen composed of a fixed filter screen 7012 and a movable filter screen 7014. The filter screen is made of high-strength nylon material, which combines toughness and wear resistance. Larger, insufficiently crushed particles are blocked by the filter screen and continue to be subjected to [further action]. The shearing and collision action of the rotating filter screen ensures that the agglomerates are fully dispersed. During operation, the slurry impacts the movable filter screen 7014, causing the elastic element 7013 behind it to deform. This results in the movable filter screen 7014 displacing relative to the fixed filter screen 7012 and colliding with it. When the impact force changes or the crushing plate 701 rotates to different positions, the rebound force of the elastic element 7013 drives the movable filter screen 7014 to reset and generate relative motion. This dynamic process effectively shakes off the material adhering to the filter screen, preventing screen clogging and avoiding the problems of reduced efficiency or the need for shutdown for cleaning caused by clogging.

[0028] like Figure 7 , Figure 10 and Figure 12 As shown, in a preferred embodiment, based on the above method, the fixed partition 201 further includes a main partition 2011 and a movable partition 2012 movably disposed on the main partition 2011. The main partition 2011 is provided with a movable groove 2013 for the movable partition 2012 to move. A flexible sealing membrane 2014, such as a wear-resistant rubber membrane, is provided between the movable groove 2013 and the main partition 2011 to prevent slurry leakage. Furthermore, the vibration assembly includes a second rotating rod 8 disposed within the fixed partition 201 and rotatably connected to the material shell 2, an eccentric shaft 801 disposed on the second rotating rod 8, a movable ring 802 sleeved on the eccentric shaft 801, and a movable rod 803 fixedly connected to the movable ring 802. The end of the movable rod 803 away from the movable ring 802 is movably connected to the movable partition 2012. The end of the second rotating rod 8 is provided with a second synchronous pulley 804 that is slidably connected to the first synchronous belt 604. The entire vibration assembly is linked with the main drive through the second synchronous pulley 804, without the need for an additional power source, realizing the unified distribution and synchronous control of the system power, and has high reliability. Specifically, the main drive of the equipment transmits power to the second synchronous pulley 804 via the first synchronous belt 604, causing the second rotating rod 8 to rotate at a constant speed. The rotation of the second rotating rod 8 causes the eccentric shaft 801 on it to perform circular motion. Due to the eccentric effect, the movable ring 802 sleeved on the eccentric shaft 801 will perform a circular motion with a radius equal to the eccentric distance. The circular motion of the movable ring 802 is transmitted to the movable partition 2012 via the movable rod 803. Since the movable partition 2012 is constrained by the flexible sealing membrane 2014 on the periphery of the movable groove 2013, its movement trajectory is restricted. Therefore, the pushing of the movable rod 803 will force the movable partition 2012 to vibrate at a low frequency and with a small amplitude within the main partition 2011. The vibration of the movable partition 2012 is transmitted through... The slurry in contact with it transmits vibration waves to the slurry throughout the countercurrent tank 203, which can directly act on the slurry in the sorting zone, effectively breaking the laminar flow state of the slurry and generating gentle turbulence. This forces the particles in the slurry, especially the heavy particles, into a more active suspended state, preventing them from depositing on the bottom of the tank or the surface of the baffle. This ensures that all magnetic particles have an equal opportunity to contact the surface of the magnetic cylinder 4 and be adsorbed. The pressure waves generated by the vibration propagate in the slurry, giving the particles in the slurry an additional, directional micro-force. This force helps the magnetic particles overcome the viscous resistance of the slurry and makes it easier for them to pass through the flow layer and move to the surface of the magnetic cylinder 4, thereby improving the adsorption speed and efficiency, especially for the recovery of fine magnetic powder.

[0029] like Figure 7 , Figure 11 and Figure 12 As shown, in a preferred embodiment, based on the above method, the impurity removal component further includes a third rotating rod 9 disposed between the counterflow trough 203 and the high-level trough 204 and rotatably connected to the material shell 2, and a plurality of material feeding components 901 evenly disposed on the third rotating rod 9 in a circular pattern. Each set of feeders 901 includes a mounting strip 9011 arranged along the axis of the third rotating rod 9 and a number of feeders 9012 equidistantly arranged on the mounting strip 9011. The feeders 9012 on two adjacent sets of feeders 901 are staggered along the axis of the third rotating rod 9. The feeders 9012 are made of stainless steel to improve wear resistance. The end of the third rotating rod 9 is provided with a synchronous pulley 902 that is slidably connected to the first synchronous belt 604. The synchronous pulley 902 is linked with the main drive system to ensure strict synchronization between the impurity removal action and the rotation speed of the magnetic cylinder 4, thus ensuring the stability of the purification effect. At the same time, this design does not require an independent drive device, which simplifies the structure and improves the system reliability. Specifically, during equipment operation, the first synchronous belt 604 of the drive unit 6 drives the synchronous pulley 902 to rotate, which in turn drives the third rotating rod 9 and all the feeding components 901 on it to rotate at a certain speed. When the magnetic cylinder 4, with the magnetic powder layer adsorbed on its surface, rotates to above the counterflow trough 203 and approaches the high-level trough 204 area, the feeding needles 9012 on the rotating feeding components 901 will periodically and gently cut into or sweep across the magnetic powder layer on the surface of the magnetic cylinder 4. Since the feeding needles 9012 of adjacent feeding components 901 are staggered, it avoids that the feeding needles 9012 on the same mounting strip 9011 are installed too densely, which would push the magnetic powder layer as a whole. The staggered feeding needles 9012 will act on the magnetic powder layer from different positions and at different times, so that the effect on the magnetic powder layer is continuous. Furthermore, to ensure comprehensive and non-intermittent impact coverage, a clearance should be reserved between the adjusting needle 9012 and the magnetic cylinder 4 to prevent interference from high-concentration slurry. The end of the adjusting needle 9012 should be rounded to prevent scratches. As the third rotating rod 9 continues to rotate, the adjusting needle 9012 continuously adjusts the magnetic powder layer. As the magnetic powder leaves the slurry surface with the rotation of the magnetic cylinder 4, it is continuously combed, effectively breaking the adhesive structure or encapsulation between magnetic particles and non-magnetic impurities such as coal slime. The dispersed impurities are more easily detached from the magnetic powder layer and fall back into the slurry under the action of gravity and slurry flow, and are discharged with the tailings slurry. The purification effect that occurs simultaneously during the adsorption process directly improves the purity of the magnetic powder product finally recovered to the magnetic powder box 5.

[0030] like Figure 2 , Figure 12 and Figure 13 As shown, in a preferred embodiment, based on the above method, further, a flushing pipe 10 is provided on both sides of the frame 1 above the magnetic powder box 5 via a support plate 101. A plurality of nozzles 1001 are equidistantly arranged on the flushing pipe 10. The flushing pipe 10 is connected to the water supply equipment via a hose. The hose connected to the flushing pipe 10 is a fatigue-resistant high-pressure rubber hose, which is convenient to extend the service life. Furthermore, a reciprocating screw 11 is rotatably mounted on one of the support plates 101 via a bearing. A driven gear 111 is mounted at the end of the reciprocating screw 11. The output shaft of the gearbox 601 is connected to a drive gear 6011 that meshes with the driven gear 111. A sleeve 112 is threaded onto the reciprocating screw 11. The sleeve 112 is connected to a rotary joint 113 via a connecting rod 1121. The rotary joint 113 is connected to one end of the flushing pipe 10. A connecting plate 12 is fixed on the support plate 101 that is rotatably connected to the reciprocating screw 11. A fixing rod 121 is fixed on the connecting plate 12. A corrugated groove 1002 that cooperates with the fixing rod 121 is opened on the outer wall of the flushing pipe 10. The depth of the corrugated groove 1002 is adapted to the swing amplitude to prevent overload. Specifically, during equipment operation, the output shaft of the gearbox 601 drives the drive gear 6011 to rotate, which in turn drives the driven gear 111 meshing with it to rotate, thereby driving the reciprocating screw 11 to rotate continuously. Since the sleeve 112 is threadedly connected to the reciprocating screw 11 and slidably disposed with the support plate 101, when the reciprocating screw 11 rotates, the sleeve 112 will make uniform reciprocating linear motion along the axis of the screw. The reciprocating motion of the sleeve 112 pushes and pulls one end of the flushing pipe 10 through the connecting rod 1121 and the rotating joint 113, forcing the entire flushing pipe 10 to move synchronously along its axis. While the flushing pipe 10 moves axially, the fixed part remains stationary. The end of rod 121 is always stuck in the corrugated groove 1002 on the outer wall of the flushing pipe 10. The undulating trajectory of the corrugated groove 1002 is constrained by the fixed rod 121, thereby converting the axial movement of the flushing pipe 10 into reciprocating rotation around its own axis, i.e., pitching and oscillating. Finally, the flushing pipe 10 synthesizes a composite motion combining axial reciprocating movement and pitching and oscillating. High-pressure water is sprayed out through nozzle 1001, forming a dynamic water curtain network that covers the entire working surface of the magnetic cylinder 4 and is constantly moving and oscillating. This completely eliminates the flushing dead corners and shadow areas that exist in fixed or single-movement flushing pipes 10, ensuring the complete stripping of the magnetic powder layer and a magnetic powder recovery rate of nearly 100%. Furthermore, because the rinsing coverage is uniform and without dead corners, there is no need to rely on extremely high water pressure to compensate for the lack of rinsing effect. Under medium water pressure, dynamic and continuous scanning rinsing can achieve or even surpass the effect of traditional high-pressure rinsing, significantly reducing the water consumption of the rinsing process and the energy consumption of driving the water pump, thus achieving a balance between high efficiency and energy saving.

[0031] The present invention also discloses a method of using a suspension solid-liquid separation device according to the aforementioned heavy medium separation system, comprising the following steps: S1: Preparation and Startup Connect the power supply and water supply line to ensure that the water supply equipment of the drive motor 602 and the flushing pipe 10 can be used normally; When the drive motor 602 is started, after the gearbox 601 reduces speed and increases torque, it drives the magnetic cylinder 4 to rotate at a constant speed through the first synchronous pulley 603 and the first synchronous belt 604. On the other hand, the output shaft of the gearbox 601 drives the reciprocating screw 11 to rotate through the driving gear 6011 and the driven gear 111. S2: Feeding and sorting: The dilute suspension slurry containing magnetite powder to be recovered is fed into the feed chute 202 from the feed inlet of the shell 2. The slurry first passes through the dispersing component, where the rotating crushing plate 701 breaks up the clumps. Then it flows evenly into the countercurrent chute 203. In the countercurrent chute 203, the slurry surface submerges the adsorption zone at the bottom of the magnetic cylinder 4. Due to the magnetic field generated by the fixed magnetic block 303 inside the magnetic cylinder 4, the magnetic magnetite powder in the slurry is adsorbed onto the surface of the rotating magnetic cylinder 4. The non-magnetic material, as tailings, flows against the direction of rotation of the magnetic cylinder 4 through the channel at the bottom of the fixed partition 201 into the discharge chute 205, and is finally discharged through the discharge channel 206 into the subsequent water treatment system. During this process, the vibration component continues to work to eliminate laminar flow at the tank wall; the needle 9012 of the impurity removal component gently moves the magnetic powder layer on the surface of the magnetic cylinder 4 to help release the entrained non-magnetic impurities. S3: Media Recovery and Purification As the magnetic cylinder 4, which has adsorbed magnetite powder, rotates, it gradually detaches from the slurry surface and enters the high-level tank 204 area, where it undergoes preliminary dehydration. When the magnetic cylinder 4 rotates to the bottom of the flushing pipe 10, the nozzle 1001, which moves axially and swings up and down, sprays water mist to completely wash the magnetic powder off the surface of the magnetic cylinder 4 and drop it into the magnetic powder box 5 below, thus completing the recycling. S4: Shutdown: Stop feeding and wait until the slurry in the material shell 2 is basically emptied. Then continue to run the equipment for a period of time and keep the flushing water running to clean the magnetic cylinder 4 and the inside of the equipment. Shut down drive motor 602 and water supply to complete the entire operation process.

[0032] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A suspension solid-liquid separation device for a heavy media separation system, comprising a frame (1), characterized in that, Also includes: Material shell (2), the material shell (2) is fixed on the frame (1) for the flow of slurry mixed with magnetic powder, and the frame (1) is provided with a magnetic powder box (5) on one side of the material shell (2) outlet end. The support part (3) includes two supports (301) symmetrically arranged on both sides of the frame (1), and a fixed shaft (302) is fixed between the two supports (301). The fixed shaft (302) is connected to a magnetic block (303) through a straight rod. The magnetic cylinder (4) is rotatably connected to the support (301) on the same side through sleeves (401) on both sides. The sleeves (401) are set on the outside of the fixed shaft (302). and a drive unit (6), which is mounted on the frame (1) and is used to drive the magnetic cylinder (4) to rotate; The shell (2) is provided with an auxiliary powder-attracting mechanism for assisting the magnetic cylinder (4) in adsorbing magnetic powder. The auxiliary powder-attracting mechanism includes a dispersing component for dispersing slurry, a vibration component for eliminating laminar flow, and a decontamination component for removing impurities from the magnetic particle layer on the outside of the magnetic cylinder (4).

2. The suspension solid-liquid separation device of the heavy medium separation system according to claim 1, characterized in that, The drive unit (6) includes a gearbox (601) fixed on the frame (1), a drive motor (602) fixed on the gearbox (601), a first synchronous pulley (603) disposed on the sleeve (401) and the output shaft of the gearbox (601), and a first synchronous belt (604) disposed between the two first synchronous pulleys (603). The output shaft of the drive motor (602) is connected to the input shaft of the gearbox (601).

3. The suspension solid-liquid separation device of the heavy medium separation system according to claim 2, characterized in that, A fixed partition (201) is fixedly installed inside the shell (2). A feeding chute (202) is formed between the fixed partition (201) and the shell (2). A counterflow chute (203) for the slurry to move in the opposite direction to the magnetic cylinder (4) is formed between the fixed partition (201) and the magnetic cylinder (4). A high-level chute (204) is formed between the shell (2) and the magnetic cylinder (4). The horizontal height of the high-level chute (204) is higher than that of the counterflow chute (203). A discharge chute (205) for collecting the slurry after removing the magnetic powder is formed inside the fixed partition (201). A discharge channel (206) penetrating the bottom of the shell (2) is provided at the bottom of the discharge chute (205).

4. The suspension solid-liquid separation device of the heavy medium separation system according to claim 3, characterized in that, The dispersing component includes a first rotating rod (7) rotatably disposed in the feeding chute (202) and a crushing plate (701) evenly disposed on the first rotating rod (7) in a circular pattern. The crushing plate (701) includes a main frame (7011) fixedly connected to the first rotating rod (7) and a fixed filter screen (7012) fixed inside the main frame (7011). An elastic element (7013) is fixedly provided on the main frame (7011), and a movable filter screen (7014) is fixedly provided at one end of the elastic element (7013) away from the main frame (7011). The end of the first rotating rod (7) is provided with a timing pulley (702) that is slidably connected to the first timing belt (604).

5. The suspension solid-liquid separation device of the heavy medium separation system according to claim 4, characterized in that, The fixed partition (201) includes a main partition (2011) and a movable partition (2012) movably disposed on the main partition (2011). The main partition (2011) has a movable groove (2013) for the movable partition (2012) to move. A flexible sealing membrane (2014) is disposed between the movable groove (2013) and the main partition (2011).

6. The suspension solid-liquid separation device of the heavy medium separation system according to claim 5, characterized in that, The vibration assembly includes a second rotating rod (8) disposed in the fixed partition (201) and rotatably connected to the shell (2), an eccentric shaft (801) disposed on the second rotating rod (8), a movable ring (802) sleeved on the eccentric shaft (801), and a movable rod (803) fixedly connected to the movable ring (802). The end of the movable rod (803) away from the movable ring (802) is movably connected to the movable partition (2012). The end of the second rotating rod (8) is provided with a second synchronous pulley (804) that is slidably connected to the first synchronous belt (604).

7. The suspension solid-liquid separation device of the heavy medium separation system according to claim 6, characterized in that, The impurity removal component includes a third rotating rod (9) disposed between the counterflow trough (203) and the high-level trough (204) and rotatably connected to the material shell (2), and a number of material feeding components (901) evenly arranged on the third rotating rod (9) in a circular pattern. Each of the material feeding components (901) includes a mounting strip (9011) arranged along the axial direction of the third rotating rod (9) and a plurality of feeding pins (9012) equidistantly arranged on the mounting strip (9011). The feeding pins (9012) on two adjacent sets of material feeding components (901) are staggered along the axial direction of the third rotating rod (9). The end of the third rotating rod (9) is provided with a synchronous pulley three (902) that is slidably connected to the first synchronous belt (604).

8. The suspension solid-liquid separation device of the heavy medium separation system according to claim 7, characterized in that, The frame (1) has a flushing pipe (10) on both sides above the magnetic powder box (5) via a support plate (101). Several nozzles (1001) are evenly spaced on the flushing pipe (10). The flushing pipe (10) is connected to the water supply equipment via a hose.

9. The suspension solid-liquid separation device of the heavy medium separation system according to claim 8, characterized in that, One of the support plates (101) is rotatably mounted on a reciprocating screw (11) via a bearing. The end of the reciprocating screw (11) is provided with a driven gear (111). The output shaft of the gearbox (601) is connected to a driving gear (6011) that meshes with the driven gear (111). A sleeve (112) is threaded onto the reciprocating screw (11). The sleeve (112) is connected to a rotary joint (113) via a connecting rod (1121). The rotary joint (113) is connected to one end of the flushing pipe (10). A connecting plate (12) is fixed on the support plate (101) which is rotatably connected to the reciprocating screw (11). A fixing rod (121) is fixed on the connecting plate (12). A corrugated groove (1002) that cooperates with the fixing rod (121) is opened on the outer wall of the flushing pipe (10).

10. A method of using the suspension solid-liquid separation device of the heavy medium separation system according to claim 9, characterized in that, Includes the following steps: S1: Preparation and Startup Connect the power supply and water supply line to ensure that the water supply equipment of the drive motor (602) and flushing pipe (10) can be used normally; When the drive motor (602) is started, after the gearbox (601) reduces speed and increases torque, the magnetic cylinder (4) is driven to rotate at a constant speed through the first synchronous pulley (603) and the first synchronous belt (604); on the other hand, the output shaft of the gearbox (601) drives the reciprocating screw (11) to rotate through the driving gear (6011) and the driven gear (111). S2: Feeding and sorting: The dilute suspension slurry containing magnetite powder to be recovered is fed into the feed chute (202) from the feed inlet of the shell (2). The slurry first passes through the dispersing component, where the rotating crushing plate (701) breaks up the clumps in it, and then flows evenly into the countercurrent chute (203). In the countercurrent chute (203), the slurry surface submerges the adsorption zone at the bottom of the magnetic cylinder (4). Due to the magnetic field generated by the fixed magnetic block (303) inside the magnetic cylinder (4), the magnetic magnetite powder in the slurry is adsorbed onto the surface of the rotating magnetic cylinder (4). The non-magnetic material, as tailings, enters the discharge chute (205) through the channel at the bottom of the fixed partition (201) against the rotation direction of the magnetic cylinder (4), and is finally discharged through the discharge channel (206) into the subsequent water treatment system. During this process, the vibration component continues to work to eliminate laminar flow at the tank wall; the pin (9012) of the impurity removal component gently moves the magnetic powder layer on the surface of the magnetic cylinder (4) to help release the entrained non-magnetic impurities; S3: Media Recovery and Purification As the magnetic cylinder (4) adsorbed with magnetite powder rotates, it gradually separates from the slurry surface and enters the high-level tank (204) area, where it undergoes preliminary dehydration. When the magnetic cylinder (4) rotates to the bottom of the flushing pipe (10), the nozzle (1001) that moves axially back and forth and swings up and down sprays water mist to completely wash the magnetic powder off the surface of the magnetic cylinder (4) and drop it into the magnetic powder box (5) below, thus completing the recycling. S4: Shutdown: Stop feeding, and after the slurry in the shell (2) is basically emptied, continue to run the equipment for a period of time and keep the flushing water on to clean the magnetic cylinder (4) and the inside of the equipment. Turn off the drive motor (602) and water supply to complete the entire operation process.

Images