Rare earth mining with screening and filtering equipment

Abstract

The present application relates to the technical field of screening and filtering equipment, and particularly relates to a screening and filtering equipment for rare earth mining, which comprises a mounting shell and a feeding port, two filter plates are arranged in the mounting shell and are spaced apart from each other in an up-down direction, the two filter plates are respectively provided with filtering areas and guiding areas along the extending direction, the filtering area of the upper filter plate corresponds to the guiding area of the lower filter plate, and the filter hole diameter of the upper filter plate is larger than that of the lower filter plate. A limiting assembly is arranged on the mounting shell, the limiting assembly comprises a plurality of blocking rods arranged at intervals along the extending direction of the filter plate, and driving assembly one and driving assembly two, the driving assembly one makes the plurality of blocking rods be lifted in turn, the driving assembly two makes the plurality of blocking rods reciprocate along the extending direction of the blocking rods, and the protrusions on the blocking rods push the materials. The present application blocks the materials in different areas through the blocking rods, and pushes the materials reciprocally in cooperation with the blocking rods, so that the materials are screened in different areas, and the materials are moved in different areas by lifting the blocking rods in turn.

Description

Technical Field

[0001] This invention relates to the technical field of screening and filtration equipment, and specifically to a screening and filtration equipment for rare earth mining. Background Technology

[0002] In the rare earth mining process, the mined rare earth ore usually needs to be screened to separate materials of different particle sizes, thereby facilitating subsequent transportation, processing, and utilization. Existing screening and filtration equipment typically uses inclined filter plates, allowing the material to move along the filter plate under its own gravity, and using the filter holes on the filter plate to screen the material.

[0003] In actual screening processes, rare earth minerals typically need to be continuously fed into the screening equipment. As the material continuously moves along the filter plate, the material entering the filter plate from both ends tends to accumulate on the filter plate surface, especially when the material input is large, causing a significant amount of material to concentrate in a localized area of ​​the filter plate. After the material piles up, the material on the upper layer cannot fully contact the filter pores on the filter plate, and some of the material that can pass through the pores may move downwards along with the other material, thus affecting the actual filtration efficiency of the filter plate.

[0004] In addition, existing inclined filter plates mainly rely on the material's own gravity to move, and the material's movement on the filter plate is relatively simple. When the material forms a continuous layer on the surface of the filter plate, the material inside the layer is not easy to change position, resulting in less opportunity for some material to come into contact with the filter holes.

[0005] On the other hand, for rare earth minerals that require grading according to different particle sizes, a single filtration stage cannot simultaneously meet the screening needs of both larger and smaller particle sizes. If multiple filter plates with different pore sizes are used for continuous screening, localized material concentration can still occur when the material enters the subsequent filtration area after the previous stage of filtration. This results in some areas of the subsequent filter plate bearing a large amount of material, while other areas are underutilized. Therefore, while improving material movement and filtration efficiency under continuous feeding conditions, it is also necessary to further achieve graded filtration of the material. Summary of the Invention

[0006] The main objective of this invention is to provide a rare earth screening and filtration device, which aims to solve the problems in existing rare earth screening and filtration devices in the related technology, where materials tend to accumulate on the filter plate during continuous feeding, causing materials entering at different times to mix with each other, resulting in insufficient contact between some materials and the filter holes. At the same time, the movement of materials on the filter plate is relatively simple, which affects the filtration effect.

[0007] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0008] A rare earth screening and filtration device includes a mounting housing and an inlet provided on the mounting housing. Two filter plates are inclinedly arranged inside the mounting housing and spaced vertically. The side of the two filter plates closer to the inlet of the mounting housing is higher than the side farther away from the inlet.

[0009] The filter plate is divided into a filtration area and a guide area along its extension direction. The filtration area is provided with filter holes, while the guide area is not provided with filter holes. The filtration area and guide area on the two filter plates are staggered along the extension direction of the filter plates. The filtration area of ​​the upper filter plate corresponds to the guide area of ​​the lower filter plate in the vertical direction. The filtration area of ​​the upper filter plate is located on the side closer to the feed inlet, and the filter hole diameter of the upper filter plate is larger than that of the lower filter plate.

[0010] The mounting housing is provided with a limiting component, which includes multiple stop bars and a driving component one and a driving component two for driving the stop bars to move. The multiple stop bars are spaced apart in the corresponding filtration area along the extension direction of the corresponding filter plate, and the extension direction of the stop bars is perpendicular to the extension direction of the filter plate.

[0011] The drive assembly is used to move the baffle closer to or away from the corresponding filter plate, and is configured to raise multiple baffles on the same filter plate sequentially from the side away from the feed inlet to the side of the feed inlet, and at the same time only one baffle on a filter plate is in the raised state.

[0012] Drive component two is used to drive multiple baffles on a filter plate to reciprocate along their extension direction. The baffles have protrusions on the side facing the feed inlet so that when the baffles approach the corresponding filter plate, they block the material from moving along the filter plate, and the reciprocating movement of the baffles agitates the blocked material.

[0013] Specifically, the guiding area of ​​the upper filter plate is located on the side away from the feed inlet, and the guiding area of ​​the lower filter plate is located on the side closer to the feed inlet. The guiding area of ​​the upper filter plate is used to guide the material that has not passed through the filter holes of the upper filter plate to the outside of the mounting housing, and the guiding area of ​​the lower filter plate is used to receive the material that has passed through the filter holes of the upper filter plate and guide the material to the filtration area of ​​the lower filter plate.

[0014] Specifically, the side wall of the mounting housing has a mounting groove corresponding to the stop bar, and the mounting groove is set perpendicular to the extension direction of the filter plate; the drive assembly includes a sliding sleeve sleeved on the stop bar and a limiting block set on the outside of the mounting housing. The sliding sleeve has a limiting groove adapted to the limiting block. The limiting block extends into the limiting groove so that the sliding sleeve can move synchronously with the stop bar along the extension direction of the mounting groove, and allows the stop bar to move relative to the sliding sleeve along the extension direction of the stop bar.

[0015] Specifically, a guide slope is provided on the side of the sliding sleeve away from the feed inlet. The drive assembly includes a chain conveyor belt located on the outside of the mounting housing and a protrusion on the chain conveyor belt. The conveying direction of the chain conveyor belt is configured such that the protrusion engages with multiple sliding sleeves in sequence. When the protrusion moves to abut against the guide slope, it pushes the corresponding sliding sleeve to move along the extension direction of the mounting groove, thereby driving the corresponding stop bar away from the corresponding filter plate.

[0016] Specifically, the conveying direction of the chain conveyor belt is configured such that the protrusion first engages with the sliding sleeve on the side away from the feed inlet, and then engages with the sliding sleeve arranged along the direction closer to the feed inlet in sequence, so that multiple stops move away from the corresponding filter plates in sequence from the side away from the feed inlet to the side closer to the feed inlet.

[0017] Specifically, the second drive assembly includes a support plate on the mounting housing, a drive component on the support plate, and a connector connected to the drive component. The drive component is used to drive the connector to reciprocate along the extension direction of the baffle. The connector is connected to multiple baffles on the same filter plate to drive the multiple baffles to slide back and forth along their own extension direction.

[0018] Specifically, the connector includes an extension plate that slides on the support plate and a drive plate connected to the extension plate. The extension plate is connected to the drive component. The drive plate is provided with multiple grooves corresponding to the stop bar. The end of the stop bar is slidably disposed in the corresponding groove. A limiting structure is provided between the stop bar and the drive plate. The limiting structure is used to restrict the stop bar from disengaging from the drive plate and to allow the stop bar to move relative to the drive plate along the extension direction of the mounting groove.

[0019] Specifically, an elastic element is provided between the drive plate and the baffle. The elastic element is used to drive the baffle rod to move toward the corresponding filter plate so that after the protrusion passes the corresponding sliding sleeve, the baffle rod is reset under the action of the elastic element.

[0020] Specifically, the mounting housing has an extension groove communicating with the mounting groove at the corresponding mounting groove location. The extension groove is set along the extension direction of the mounting groove, and a fitting block is slidably arranged in the extension groove. An elastic element two is provided between the fitting block and the mounting housing. The elastic element two is used to drive the fitting block to move towards the corresponding stop bar, so that the fitting block and the stop bar remain in contact and block the gap between the mounting groove and the corresponding filter plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. By using two filter plates spaced apart vertically, with the pore size of the upper filter plate being larger than that of the lower filter plate, and the filtration and guiding areas of the two filter plates being staggered, the material first undergoes preliminary screening through the upper filter plate with the larger pore size, and then undergoes further screening through the lower filter plate, thereby achieving graded filtration of rare earth materials of different particle sizes.

[0023] 2. Multiple baffles are spaced apart along the extension direction of the filter plate. When the baffles approach the filter plate, they can prevent the material from continuing to move downward along the inclined filter plate, so that the material is in the area between adjacent baffles, avoiding the material from sliding down the filter plate quickly and reducing the contact time with the filter holes.

[0024] 3. Drive component two can drive multiple baffles to reciprocate along their extension direction. The protrusions on the baffles move with the baffles and push the blocked material, causing the material to move and redistribute, so that the material can have more contact with the filter holes in the corresponding area, which is beneficial to improving the filtration effect.

[0025] 4. The drive assembly can raise multiple baffles sequentially from the side furthest from the feed inlet to the side closest to the feed inlet, and ensure that only one baffle is raised on the same filter plate at a time. This allows the material to gradually pass over the corresponding baffle and enter the next area after completing the screening of the current area, thus taking into account both material retention screening and continuous conveying. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a rare earth screening and filtration device according to the present invention.

[0027] Figure 2 This is a schematic diagram of the filter plate in the mounting housing of the present invention.

[0028] Figure 3 This is a schematic diagram of the installation structure of the stop bar and the sliding sleeve in this invention.

[0029] Figure 4 This is a schematic diagram of the stop bar in this invention.

[0030] Figure 5 This is a schematic diagram of the sliding sleeve in this invention.

[0031] Figure 6 This is a schematic diagram of the bonding component in this invention.

[0032] Figure 7 yes Figure 6 A magnified structural diagram of point A in the middle.

[0033] Figure 8 This is a partial structural diagram of the driving component two in this invention.

[0034] The names of the parts in the attached diagram are:

[0035] 1. Housing; 11. Inlet; 12. Mounting groove; 13. Extension groove; 14. Discharge port; 15. Collection box;

[0036] 2. Filter plate; 21. Filtration area; 22. Guiding area;

[0037] 3. Limiting component; 31. Stop bar; 32. Protrusion;

[0038] 4. Adhesive component; 41. Adhesive block; 42. Elastic element two;

[0039] 5. Drive assembly one; 51. Sliding sleeve; 511. Limiting groove; 512. Guide slope; 52. Limiting block; 53. Chain conveyor belt; 54. Protrusion;

[0040] 6. Drive component two; 61. Support plate; 62. Drive component; 621. Lead screw; 622. Drive source; 63. Connector; 631. Extension plate; 632. Drive plate; 633. Slide groove; 64. Elastic component one. Detailed Implementation

[0041] 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.

[0042] Reference Figures 1 to 8 A rare earth screening and filtration device includes a mounting housing 1, an inlet 11 on the mounting housing 1, two filter plates 2 inside the mounting housing 1, and a limiting component 3 on the mounting housing 1. Material enters the mounting housing 1 through the inlet 11 and passes sequentially through the two filter plates 2 for screening. The limiting component 3 is used to segmentally restrict the movement of the material on the filter plates 2 and to allow the restricted material to move, thereby increasing the contact opportunity between the material and the filter plates 2. After the material has completed screening on the corresponding filter plate 2, the limiting component 3 releases the restriction on the material, allowing the material to continue moving along the filter plate 2.

[0043] Reference Figure 1 and Figure 2 The mounting housing 1 adopts a box structure with internal accommodating space. The inlet 11 is located at the upper part of the mounting housing 1 and communicates with the interior of the mounting housing 1, so that the rare earth material to be screened can enter the interior of the mounting housing 1 through the inlet 11. The side wall of the mounting housing 1 is used to install the limiting component 3 and to provide an installation position for the movement of the limiting component 3.

[0044] Two filter plates 2 are arranged vertically and spaced apart inside the mounting housing 1. Both filter plates 2 are inclined relative to the horizontal plane, and the side of the two filter plates 2 closer to the feed inlet 11 is higher than the side farther away from the feed inlet 11, so that the material falling onto the filter plates 2 can move along the extension direction of the filter plates 2 under its own gravity. The two filter plates 2 are arranged vertically and spaced apart so that the material screened by the upper filter plate 2 can fall onto the lower filter plate 2.

[0045] The filter plate 2 is divided into a filtration zone 21 and a guiding zone 22 along its extending direction. The filtration zone 21 has multiple filter holes, while the guiding zone 22 has no filter holes. The filtration zone 21 is used to allow materials with a particle size smaller than the corresponding filter holes to pass through, while the guiding zone 22 is used to guide materials that do not pass through the filter holes or to receive materials from above. The filtration zone 21 and guiding zone 22 on the two filter plates 2 are staggered along the extending direction of the filter plate 2, so that the two filter plates 2 can sequentially screen materials.

[0046] The filtration area 21 of the upper filter plate 2 is located on the side closer to the inlet 11, and the guide area 22 of the upper filter plate 2 is located on the side farther from the inlet 11; the guide area 22 of the lower filter plate 2 is located on the side closer to the inlet 11, and the filtration area 21 of the lower filter plate 2 is located on the side farther from the inlet 11. This ensures that after the material falls from the inlet 11 onto the upper filter plate 2, it first passes through the filtration area 21 of the upper filter plate 2. Material that can pass through the filter holes of the upper filter plate 2 falls downwards to the guide area 22 of the lower filter plate 2, while material that cannot pass through the filter holes of the upper filter plate 2 continues to move along the upper filter plate 2 to the guide area 22, and then moves from the guide area 22 towards the outside of the mounting housing 1; material falling to the guide area 22 of the lower filter plate 2 continues to move along the lower filter plate 2 and enters the filtration area 21 of the lower filter plate 2 for further screening.

[0047] The filter pores on the upper filter plate 2 are larger than those on the lower filter plate 2, so that the upper filter plate 2 mainly performs preliminary screening of materials with larger particle sizes. The materials that pass through the upper filter plate 2 are further screened by the lower filter plate 2, so that materials of different particle sizes can be separated step by step on the two filter plates 2.

[0048] A discharge port 14 is provided on the side of the mounting housing 1 corresponding to the two filter plates 2 away from the feed inlet 11, for discharging materials that cannot pass through the filter holes on the filter plates 2 from the mounting housing 1. A collection box 15 is provided on the lower side of the filtration area 21 of the lower filter plate 2 for collecting the materials that have undergone two filtrations.

[0049] Reference Figures 1 to 4 The limiting component 3 is disposed at the filtration area 21 corresponding to the filter plate 2, and includes multiple baffles 31. The mounting housing 1 also includes a drive component 5 and a drive component 6. The multiple baffles 31 are spaced apart along the extension direction of the filter plate 2 and are respectively located within the filtration area 21 of the filter plate 2. The extension direction of the baffles 31 is perpendicular to the extension direction of the filter plate 2, allowing the baffles 31 to cross the material movement path of the filter plate 2. When the baffles 31 approach the filter plate 2, they can block the material moving downwards along the filter plate 2, causing the material to temporarily stop on the side of the baffle 31 near the inlet 11.

[0050] The drive assembly 5 is used to move the baffle 31 away from the corresponding filter plate 2, and to raise multiple baffles 31 on the same filter plate 2 in sequence from the side away from the feed inlet 11 to the side closer to the feed inlet 11. When the above actions are performed on the same filter plate 2, only one baffle 31 is in the raised state at any given time, so that the material can move downstream of the filter plate 2 segment by segment according to the positions of the multiple baffles 31.

[0051] Drive assembly 2 6 is used to drive multiple baffles 31 to reciprocate along the extension direction of the baffles 31. Multiple protrusions 32 are provided on the side of the baffles 31 facing the feed inlet 11. When the baffles 31 approach the filter plate 2 and block the material, drive assembly 2 6 drives the baffles 31 to reciprocate. The protrusions 32 move with the baffles 31 and push the material on the side of the baffles 31 facing the feed inlet 11, so that the material restricted by the baffles 31 moves, thus allowing the material to change its position on the surface of the filter plate 2 even when blocked by the baffles 31.

[0052] Reference Figures 1 to 7 The drive assembly 5, used to control the distance between the stop bar 31 and the corresponding filter plate 2, includes a sliding sleeve 51, a limiting block 52, a chain conveyor belt 53, and a protrusion 54. The sliding sleeve 51 is fitted onto the stop bar 31, and the sliding sleeve 51 can drive the stop bar 31 to move along the extension direction of the mounting groove 12, while allowing the stop bar 31 to move relative to the sliding sleeve along the extension direction of the stop bar 31. The mounting groove 12 is provided on the side wall of the mounting housing 1 corresponding to the stop bar 31. The mounting groove 12 is arranged perpendicular to the extension direction of the filter plate 2, and mounting grooves 12 are provided at both ends of the mounting housing 1 corresponding to the extension direction of the stop bar 31. The end of the stop bar 31 passes through the mounting groove 12 and extends out of the mounting housing 1. The sliding sleeve 51 is located outside the mounting housing 1 and is fitted onto the end of the stop bar 31 that extends out of the mounting housing 1.

[0053] A limiting block 52 is disposed on the outside of the mounting housing 1 and corresponds to the mounting groove 12. A limiting groove 511 is formed on the sliding sleeve 51, and the limiting block 52 extends into the limiting groove 511. The limiting groove 511 extends along the extending direction of the mounting groove 12, so that the limiting block 52 can restrict the movement direction of the sliding sleeve 51. When the sliding sleeve 51 moves along the extending direction of the mounting groove 12, the limiting block 52 slides relative to it in the limiting groove 511, so that the sliding sleeve 51 can move along the mounting groove 12 without deviating in other directions. Since the sliding sleeve 51 is sleeved on the stop rod 31, the movement of the sliding sleeve 51 can drive the stop rod 31 to move synchronously along the extending direction of the mounting groove 12.

[0054] Meanwhile, the stop lever 31 can move relative to the sliding sleeve 51 along its own extension direction, so that when the stop lever 31 is driven by the second drive component 6, it can reciprocate within the restricted position of the sliding sleeve 51 along its own extension direction, without affecting the reciprocating material-pulling action of the stop lever 31 due to the sliding sleeve 51 covering the stop lever 31. Through the cooperation between the sliding sleeve 51 and the limiting block 52, the lifting movement of the stop lever 31 and its reciprocating movement along its own extension direction can be independent of each other.

[0055] A guide slope 512 is provided on the side of the sliding sleeve 51 away from the feed inlet 11, and the guide slope 512 is inclined relative to the moving direction of the sliding sleeve 51. The chain conveyor belt 53 is located outside the mounting housing 1 and below the sliding sleeve 51, and a protrusion 54 is provided on the chain conveyor belt 53. The protrusion 54 can move cyclically with the chain conveyor belt 53 and engage with the guide slopes 512 of multiple sliding sleeves 51 in sequence during the movement. The conveying direction of the chain conveyor belt 53 is configured such that when the protrusion 54 engages with the sliding sleeve 51, the protrusion 54 moves from a low position to a high position along the extension direction of the filter plate 2, and pushes the sliding sleeve 51 to move along the extension direction of the mounting groove 12. In this embodiment, a set of drive assembly 5 and a set of drive assembly 6 are provided at both ends of the stop bar 31 on the same filter plate 2 to make the movement of the stop bar 31 more stable.

[0056] When the stop bar 31 is positioned close to the filter plate 2, it can block material moving along the inclined direction of the filter plate 2. When the chain conveyor belt 53 is running, the protrusion 54 first engages with the sliding sleeve 51 on the side away from the feed inlet 11. After the protrusion 54 moves along the chain conveyor belt 53 and contacts the guide slope 512 of the corresponding sliding sleeve 51, the protrusion 54 continues to move, thereby pushing the sliding sleeve 51 to move along the extension direction of the mounting groove 12, so that the stop bar 31 connected to the sliding sleeve 51 moves away from the corresponding filter plate 2.

[0057] When the baffle 31 is raised, the material that was originally located near the feed inlet 11 and blocked by the baffle 31 can pass over the baffle 31 and continue to move along the filter plate 2 away from the feed inlet 11. As the chain conveyor belt 53 continues to run, the protrusion 54 continues to move to the next sliding sleeve 51 after passing the current sliding sleeve 51, and engages with multiple sliding sleeves 51 in sequence from the side away from the feed inlet 11 to the side near the feed inlet 11, so that multiple baffles 31 are raised in sequence.

[0058] By setting the movement path of the protrusion 54 on the chain conveyor belt 53, when the protrusion 54 engages with the sliding sleeve 51, it only pushes the currently corresponding sliding sleeve 51, while the sliding sleeves 51 in other positions remain in their original positions. This prevents multiple stop bars 31 on the same filter plate 2 from lifting simultaneously. When one stop bar 31 is in the lifted state, the other stop bars 31 remain close to the corresponding filter plate 2 and block the material. After the protrusion 54 passes over the current stop bar 31, the stop bar 31 returns to its position close to the filter plate 2, and the protrusion 54 continues to engage with the next sliding sleeve 51, thereby causing the material to move segment by segment along the positions of multiple stop bars 31.

[0059] In this embodiment, the chain conveyor belt 53 adopts a closed-loop conveying structure, so that after the protrusion 54 completes its sequential engagement with multiple sliding sleeves 51, it continues to move in a cycle, and then starts engaging again from the sliding sleeve 51 on the side away from the feed inlet 11. By adjusting the running speed of the chain conveyor belt 53, the time interval between the lifting and lowering of each stop bar 31 can be changed, thereby changing the residence time of the material between adjacent stop bars 31.

[0060] Reference Figures 6 to 8 The second drive assembly 6 is used to reciprocate the baffle 31 along its extension direction when the baffle 31 approaches the filter plate 2 and restricts material movement. The second drive assembly 6 includes a support plate 61, a drive member 62, and a connector 63. The support plate 61 is fixedly disposed on the outside of the mounting housing 1 and is used to provide mounting and support positions for the drive member 62 and the connector 63. The drive member 62 is disposed on the support plate 61 and connected to the connector 63. The drive member 62 is used to drive the connector 63 to reciprocate along the extension direction of the baffle 31.

[0061] The connecting member 63 is connected to multiple stop rods 31 on the same filter plate 2, so that when the connecting member 63 moves along the extension direction of the stop rods 31, it can simultaneously drive multiple stop rods 31 to move along their respective extension directions. The connecting member 63 includes an extension plate 631 and a drive plate 632. The drive member 62 includes a lead screw 621 and a drive source 622. The lead screw 621 is rotatably mounted on the support plate 61, and the axial direction of the lead screw 621 is the same as the extension direction of the stop rods 31. The drive source 622 is mounted on the support plate 61 and connected to the lead screw 621, and is used to drive the lead screw 621 to rotate. The extension plate 631 is slidably mounted on the support plate 61 along the axial direction of the lead screw 621. The extension plate 631 has a through hole adapted to the lead screw 621, and the extension plate 631 and the lead screw 621 are screwed together. In this embodiment, the lead screw 621 is configured as a reciprocating lead screw so that when the lead screw 621 rotates, it drives the extension plate 631 to reciprocate along the axis of the lead screw 621.

[0062] The drive plate 632 is fixedly mounted on the extension plate 631, enabling the extension plate 631 to drive the drive plate 632 to move synchronously. The drive plate 632 is arranged along the extension direction of the filter plate 2 and has multiple sliding grooves 633 corresponding to multiple stop bars 31. The multiple sliding grooves 633 correspond to multiple stop bars 31 respectively, and the ends of the stop bars 31 are slidably disposed in the corresponding sliding grooves 633.

[0063] The extension direction of the slide groove 633 is the same as the extension direction of the mounting groove 12, allowing the stop rod 31 to move relative to the drive plate 632 within the slide groove 633 along the extension direction of the mounting groove 12. When the drive assembly 5 moves the stop rod 31 away from the filter plate 2, the stop rod 31 can move relative to the drive plate 632 along the slide groove 633, while the drive plate 632 does not need to follow the stop rod 31 in raising and lowering, thus enabling the drive assembly 5 and the drive assembly 6 to control the two directions of movement of the stop rod 31 respectively.

[0064] A limiting structure is provided between the stop rod 31 and the drive plate 632. The limiting structure is used to prevent the end of the stop rod 31 from disengaging from the corresponding slide groove 633, while allowing the stop rod 31 to move relative to the drive plate 632 along the extension direction of the slide groove 633. This ensures that when the drive plate 632 moves along the extension direction of the stop rod 31, the limiting structure can drive the stop rod 31 to move synchronously; and when the drive assembly 5 drives the stop rod 31 to rise and fall along the extension direction of the mounting groove 12, the stop rod 31 can move relative to the drive plate 632 within the slide groove 633. In this embodiment, the limiting structure consists of a locking block located at the end of the stop rod 31 and a locking groove in the slide groove 633 that matches the locking block. The locking groove is provided along the extension direction of the slide groove 633.

[0065] An elastic element 64 is provided between the drive plate 632 and the stop rod 31. The elastic element 64 is used to apply a force to the stop rod 31 toward the corresponding filter plate 2. When the stop rod 31 is not pushed by the protrusion 54, it remains close to the filter plate 2 under the action of the elastic element 64. When the protrusion 54 on the chain conveyor belt 53 moves along the guide slope 512 of the sliding sleeve 51 and pushes the sliding sleeve 51, the sliding sleeve 51 drives the stop rod 31 to overcome the force of the elastic element 64 and move away from the filter plate 2. When the protrusion 54 passes the corresponding sliding sleeve 51, the sliding sleeve 51 loses the support of the protrusion 54, and the stop rod 31 moves toward the filter plate 2 under the action of the elastic element 64 and returns to its original position.

[0066] When the baffle 31 is close to the filter plate 2, the drive unit 62 drives the extension plate 631 to reciprocate along the extension direction of the baffle 31. The extension plate 631 drives the drive plate 632 to reciprocate synchronously. The drive plate 632 then drives multiple baffles 31 to reciprocate along their own extension direction through the limiting structure. Multiple protrusions 32 provided on the side of the baffle 31 facing the feed inlet 11 move synchronously with the baffle 31 and agitate the material located on the side of the baffle 31 close to the feed inlet 11, causing the material to move under the obstruction of the baffle 31.

[0067] With the above configuration, the baffle 31 simultaneously serves to block the material along the inclined direction of the filter plate 2 and to move the material along its own extending direction. When the baffle 31 approaches the filter plate 2, the material temporarily stops under the blocking effect of the baffle 31, and the reciprocating movement of the baffle 31 causes the protrusion 32 to repeatedly contact the material, causing the material to change position on the surface of the filter plate 2, which is beneficial for the material at different positions to contact the filter holes; when the corresponding baffle 31 is lifted by the drive component 5, the material is released from the obstruction and continues to move along the filter plate 2, thereby realizing the segmented screening of the material.

[0068] Reference Figure 6 and Figure 7 An extension groove 13 is provided on the mounting housing 1 at the corresponding mounting groove 12. The extension groove 13 communicates with the mounting groove 12 and their extension directions are the same. A bonding component 4 is provided in the extension groove 13. The bonding component 4 includes a bonding block 41 and an elastic element 42. The bonding block 41 is slidably disposed in the extension groove 13 along its extension direction. The elastic element 42 is disposed in the extension groove 13 and its two ends are respectively connected to the bonding block 41 and the mounting housing 1. The elastic element 42 is configured to drive the bonding block 41 to move toward the stop bar 31 until it is in a bonding state with the stop bar 31.

[0069] When the drive assembly 5 moves the baffle 31 away from the filter plate 2, the elastic element 42 drives the mating block 41 to keep in contact with the baffle 31, thereby blocking the mounting groove 12 on the lower side of the baffle 31 and preventing material from entering the mounting groove 12 through the gap in the mounting groove 12 on the lower side of the baffle 31.

[0070] In this embodiment, each of the two filter plates 2 is provided with a limiting component 3, and four stop bars 31 are provided on each filter plate 2. In addition, two sets of driving components 5 and driving components 6 are provided on both sides of each filter plate 2.

[0071] The specific working method is as follows:

[0072] In use, the rare earth material to be screened is fed into the housing 1 through the inlet 11. The material falls into the filtration area 21 of the upper filter plate 2 and moves away from the inlet 11 under its own gravity. At this time, multiple baffles 31 approach the upper filter plate 2 to block the material in segments. The drive assembly 6 drives the multiple baffles 31 to move back and forth along their extension direction. The protrusions 32 on the baffles 31 push the blocked material, causing the material to move within the filtration area 21 and be screened through the filter holes.

[0073] During the operation of the chain conveyor belt 53, the protrusion 54 contacts the guide slope 512 on multiple sliding sleeves 51 in sequence, pushing the corresponding sliding sleeve 51 to move along the mounting groove 12, causing the corresponding stop bar 31 to move away from the upper filter plate 2. The multiple stop bars 31 are raised in sequence from the side away from the feed inlet 11 to the side closer to the feed inlet 11, allowing the blocked material to pass through the positions of each stop bar 31 in sequence. After the protrusion 54 passes the sliding sleeve 51, the stop bar 31 moves back towards the filter plate 2 under the action of the elastic element 64, and the area between the stop bar 31 and the mounting housing 1 is blocked by the bonding block 41.

[0074] Material that cannot pass through the filter holes of the upper filter plate 2 moves along the upper filter plate 2 to the guide area 22 and is discharged from the mounting housing 1; material that passes through the filter holes of the upper filter plate 2 falls down to the guide area 22 of the lower filter plate 2 and moves along the lower filter plate 2 to the filtration area 21.

[0075] Material entering the filtration area 21 of the lower filter plate 2 is blocked in segments by multiple baffles 31 in the same manner as the upper filter plate 2. Drive assembly 2 6 moves the baffles 31 back and forth, causing the protrusions 32 to move the material and allow it to pass through the filter holes of the lower filter plate 2 for further screening. Drive assembly 1 5 then sequentially raises the baffles 31 from the side furthest from the inlet 11 to the side closest to the inlet 11, causing the material to move downstream segment by segment. Finally, material that passes through the filter holes of the lower filter plate 2 is discharged downwards, while material that cannot pass through the filter holes continues to move along the lower filter plate 2 and is discharged from the mounting housing 1, thus completing the grading and screening of rare earth materials.

[0076] In the above process, the movement of the baffle 31 toward or away from the filter plate 2 is controlled by the drive assembly 5, and the reciprocating movement of the baffle 31 along its own extension direction is controlled by the drive assembly 6. The two movements cooperate with each other, so that the baffle 31 can block and deflect the material when it is close to the filter plate 2, and release the blockage when the material needs to continue to move away from the filter plate 2.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rare earth screening and filtration device, comprising a mounting housing and an inlet disposed on the mounting housing, characterized in that, Two filter plates are inclinedly arranged inside the mounting housing, with the side of the two filter plates closer to the feed inlet of the mounting housing being higher than the side farther from the feed inlet. The filter plate is divided into a filtration area and a guide area along its extension direction. The filtration area is provided with filter holes, while the guide area is not provided with filter holes. The filtration area and guide area on the two filter plates are staggered along the extension direction of the filter plates. The filtration area of ​​the upper filter plate corresponds to the guide area of ​​the lower filter plate in the vertical direction. The filtration area of ​​the upper filter plate is located on the side closer to the feed inlet, and the filter hole diameter of the upper filter plate is larger than that of the lower filter plate. The mounting housing is provided with a limiting component, which includes multiple stop bars and a driving component one and a driving component two for driving the stop bars to move. The multiple stop bars are spaced apart in the corresponding filtration area along the extension direction of the corresponding filter plate, and the extension direction of the stop bars is perpendicular to the extension direction of the filter plate. The drive assembly is used to move the baffle closer to or away from the corresponding filter plate, and is configured to raise multiple baffles on the same filter plate sequentially from the side away from the feed inlet to the side of the feed inlet, and at the same time only one baffle on a filter plate is in the raised state. Drive component two is used to drive multiple baffles on a filter plate to reciprocate along their extension direction. The baffles have protrusions on the side facing the feed inlet so that when the baffles approach the corresponding filter plate, they block the material from moving along the filter plate, and the reciprocating movement of the baffles agitates the blocked material.

2. The rare earth mining screening and filtration equipment according to claim 1, characterized in that, The guiding area of ​​the upper filter plate is located on the side away from the feed inlet, and the guiding area of ​​the lower filter plate is located on the side closer to the feed inlet. The guiding area of ​​the upper filter plate is used to guide the material that has not passed through the filter holes of the upper filter plate to the outside of the mounting housing, and the guiding area of ​​the lower filter plate is used to receive the material that has passed through the filter holes of the upper filter plate and guide the material to the filtration area of ​​the lower filter plate.

3. The rare earth mining screening and filtration equipment according to claim 1, characterized in that, The side wall of the mounting housing has a mounting groove corresponding to the stop bar, and the mounting groove is set along the direction perpendicular to the extension of the filter plate; the drive assembly includes a sliding sleeve sleeved on the stop bar and a limiting block set on the outside of the mounting housing. The sliding sleeve has a limiting groove adapted to the limiting block. The limiting block extends into the limiting groove so that the sliding sleeve can move synchronously with the stop bar along the extension direction of the mounting groove, and allows the stop bar to move relative to the sliding sleeve along the extension direction of the stop bar.

4. A rare earth mining screening and filtration device according to claim 3, characterized in that, The sliding sleeve has a guide slope on the side away from the feed inlet. The drive assembly includes a chain conveyor belt on the outside of the mounting housing and a protrusion on the chain conveyor belt. The conveying direction of the chain conveyor belt is configured so that the protrusion engages with multiple sliding sleeves in sequence. When the protrusion moves to abut against the guide slope, it pushes the corresponding sliding sleeve to move along the extension direction of the mounting groove, thereby driving the corresponding stop bar away from the corresponding filter plate.

5. A rare earth mining screening and filtration device according to claim 4, characterized in that, The conveying direction of the chain conveyor belt is configured such that the protrusion first engages with the sliding sleeve on the side away from the feed inlet, and then engages with the sliding sleeve arranged along the direction closer to the feed inlet in sequence, so that multiple stops move away from the corresponding filter plates in sequence from the side away from the feed inlet to the side closer to the feed inlet.

6. A rare earth mining screening and filtration device according to claim 1, characterized in that, The second drive assembly includes a support plate on the mounting housing, a drive member on the support plate, and a connector connected to the drive member. The drive member is used to drive the connector to reciprocate along the extension direction of the baffle. The connector is connected to multiple baffles on the same filter plate to drive the multiple baffles to slide back and forth along their own extension direction.

7. A rare earth mining screening and filtration device according to claim 6, characterized in that, The connector includes an extension plate that slides on a support plate and a drive plate connected to the extension plate. The extension plate is connected to the drive plate. The drive plate is provided with multiple grooves corresponding to the stop bar. The end of the stop bar is slidably disposed in the corresponding groove. A limiting structure is provided between the stop bar and the drive plate. The limiting structure is used to restrict the stop bar from disengaging from the drive plate and to allow the stop bar to move relative to the drive plate along the extension direction of the mounting groove.

8. A rare earth extraction screening and filtration device according to claim 7, characterized in that, An elastic element is provided between the drive plate and the baffle. The elastic element is used to drive the baffle rod to move toward the corresponding filter plate so that after the protrusion passes the corresponding sliding sleeve, the baffle rod is reset under the action of the elastic element.

9. A rare earth mining screening and filtration device according to claim 3, characterized in that, An extension groove communicating with the mounting groove is provided on the mounting housing at the corresponding mounting groove. The extension groove is set along the extension direction of the mounting groove. A fitting block is slidably provided in the extension groove. An elastic element two is provided between the fitting block and the mounting housing. The elastic element two is used to drive the fitting block to move toward the corresponding stop bar so that the fitting block and the stop bar keep in contact and block the gap between the mounting groove and the corresponding filter plate.

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