A rare earth impurity removal device and method for rare earth processing

Abstract

The present invention discloses a rare earth impurity removal treatment device for rare earth processing and a method thereof, belonging to the technical field of mineral filtering equipment. A rotating drum is rotatably mounted on a main shaft, and a plurality of treatment boxes are evenly arranged in a circular array on the edge of the rotating drum at equal intervals. An automatic vacuum control mechanism, an automatically adjustable magnetic mechanism, and an auxiliary cleaning and unloading mechanism are arranged in the treatment box; the automatic vacuum control mechanism comprises an outer partition, an inner partition, and a control component, and the intersection of the through holes on the outer partition and the inner partition constitutes an air flow channel; the treatment box of the device has a simple structure, and the control structures are all arranged on the outside of the treatment box, which is easy to inspect and maintain the device, and the adsorption force, magnetic force, and vibration effect on the filter cloth generated by the treatment box can be controlled only by the rotation of the rotating drum. The mechanical control logic is clear, not easy to damage, and easy to debug.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral filtering equipment, and in particular to a rare earth impurity removal treatment device for rare earth processing and a method thereof. Background Art

[0002] Chinese patent CN118122020A discloses a rare earth magnetic filtering and processing device for rare earth processing, which includes a frame, a material storage box, a power unit, a distribution head, a mounting frame, a filter plate, and a de-dusting magnet; the material storage box, the power unit, the distribution head, and the mounting frame are all arranged on the frame, and the mounting frame is rotatably connected to the frame, the power unit is used to drive the mounting frame to rotate, the filter plate is arranged on the mounting frame, the filter plate is provided with a filter screen, and the filter plate is connected to the distribution head through a pipe, the distribution head is connected to a negative pressure device and an air blowing device, and a slide is slidably installed inside the filter plate. The present invention relies on the interaction between the negative pressure generated by the magnetic filtering and processing device and the air blowing flow to achieve a change in the attraction of the de-dusting magnet and perform automatic unloading. However, the device still has the following problems:

[0003] 1. Rotating drum external filter magnetic filters usually run for a long time to achieve continuous filtration and separation of slurry. However, the filter plate structure of this device is relatively complex, and each filter plate is equipped with a large number of parts. It is not only easy to be damaged, but also difficult to repair, which increases production costs.

[0004] 2. The higher the vacuum degree, the thicker the mud cake will be. However, the increase in the thickness of the filter cake will increase the filtration resistance, which is not conducive to dehydration and will also increase power consumption and operating costs. The low vacuum degree will affect the dehydration efficiency of the filter cake and reduce the quality of the finished product.

[0005] Based on this, the present invention designs a rare earth impurity removal treatment device and method for rare earth processing to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a rare earth impurity removal device and method for rare earth processing.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A rare earth impurity removal device for rare earth processing, comprising a frame, a bracket, a main shaft, a distribution head, a material guide plate, a rotating drum and a filter cloth;

[0009] Two brackets are symmetrically fixedly mounted on the upper end of the frame, the main shaft is fixedly mounted between the brackets, and the drum is rotatably mounted on the main shaft. Multiple processing boxes are evenly arranged at equal intervals in a circular array on the edge of the drum. A filter cloth is fixedly mounted on the outer ring surface of the drum. A distribution head is provided on the side of the drum, and the processing boxes are connected to the distribution head through a pipe. A material guide plate is also fixedly mounted on the side of the frame. Fixed ring plates are also symmetrically fixedly mounted on both ends of the frame.

[0010] The processing box is provided with a vacuum degree automatic control mechanism for making the suction force of the processing box small when the processing box is located in the filtration area and large when the processing box is located in the dehydration area. The vacuum degree automatic control mechanism includes an outer partition, an inner partition and a control component. The processing box is provided with an outer partition on the side close to the filter cloth. The processing box is provided with an inner partition that is in contact with the outer partition and can slide along the length direction of the outer partition. Through holes are evenly opened on the outer partition and the inner partition, and the through holes on the outer partition and the inner partition correspond to each other one by one. The intersection of the through holes on the outer partition and the inner partition constitutes an air flow channel; control components for driving the inner partition to slide relative to each other along the length direction of the outer partition to control the cross-sectional size of the air flow channel are symmetrically provided on both sides of the rotating drum;

[0011] The processing box is equipped with an automatically adjustable magnetic mechanism for making the magnetic force stronger when the processing box is in the filtration area and dehydration area, and weaker when it is in the unloading area, as well as an auxiliary cleaning and unloading mechanism for vibrating the filter cloth when the processing box is in the unloading area to facilitate the falling off of the filter cake.

[0012] Furthermore, the control component includes a connecting plate, a ball bearing and a control track. The connecting plate is connected to the side of the processing box in a limited sliding manner. The end of the connecting plate located on the inner side of the processing box is fixedly connected to the inner partition. The end of the connecting plate located on the outer side of the processing box is provided with a ball bearing, and the control track connected to the ball bearing is fixedly installed on the fixed ring plate.

[0013] Furthermore, the control track is arranged in a ring shape and is concentric with the main shaft. The control track is composed of section A located in the filtration area and section B in the dehydration area. The thickness of section A and section B of the control track on the same fixed ring plate are different. The thickness of section A and section B of the control track on the two fixed ring plates is opposite, and the thickness difference of section A and section B of the control track is the same.

[0014] Furthermore, the automatically adjustable magnetic mechanism includes a sliding magnetic component and an adjustment component. A sliding magnetic component that can move radially along the rotating drum is provided in the processing box, and adjustment components are symmetrically provided at both ends of the main shaft for driving the sliding magnetic component to perform telecentric movement when the processing box is located in the filtration area and the dehydration area, and to perform pericentric movement when the processing box is located in the unloading area.

[0015] Furthermore, the adjustment component includes an adjustment roller, a fixed plate and an adjustment track. The end of the sliding magnetic component is rotatably mounted with an adjustment roller, the fixed plate is fixedly connected to the main shaft, and the fixed plate is provided with an adjustment track that is rollingly connected to the adjustment roller.

[0016] Furthermore, the adjustment track is composed of a distal section located in the filtration area and the dehydration area and a proximal section located in the unloading area. The adjustment tracks of the distal section and the proximal section are both arc-shaped and concentric with the main axis. At the same time, the diameter of the adjustment track of the distal section is larger than the diameter of the adjustment track of the proximal section.

[0017] Furthermore, the auxiliary cleaning and unloading mechanism includes a rotating shaft, a cam knocking block, a driving assembly and a locking assembly. The rotating shaft is rotatably connected to the side wall of the processing box. A plurality of cam knocking blocks for knocking the inner partition to vibrate the filter cloth are fixedly installed on the rotating shaft. The two ends of the rotating shaft pass through the side walls of the processing box and are respectively connected to the driving assembly. A locking assembly is provided on the driving assembly. The driving assembly is used to control the rotation of the rotating shaft when the processing box is located in the unloading area, and the locking assembly is used to control the locking of the rotating shaft after the processing box leaves the unloading area.

[0018] Furthermore, the driving assembly includes a ring gear and a gear, the gear is fixedly connected to the end of the rotating shaft, the ring gear is fixedly mounted on the fixed ring plate, the ring gear is located in the unloading area and is meshed with the gear.

[0019] Furthermore, the locking assembly includes a locking plate, a connecting rod and a locking roller. The connecting rod is fixedly installed at the eccentric part of the gear. The locking roller is rotatably installed on the end of the connecting rod. The locking plate is fixedly installed on the fixed ring plate. The locking plate is arranged in an arc shape and is concentric with the main shaft. The locking plate is arranged in the filtration area and the dehydration area. The locking plate is located on the side of the gear away from the ring gear and is rollingly connected to the locking roller.

[0020] In order to better achieve the purpose of the present invention, the present invention also provides a treatment method of a rare earth impurity removal treatment device for rare earth processing, comprising the following steps:

[0021] Step 1: When the treatment box is immersed in the rare earth solution, the cross-section of the air flow channel on the treatment box is small, which makes the adsorption area and adsorption force of the treatment box on the filter cake smaller. The distance between the sliding magnetic component and the filter cloth is close, which generates a strong magnetic force. The two cooperate to form a filter cake on the filter cloth;

[0022] Step 2: After the rare earth solution is transferred out of the treatment box, the cross-section of the air flow channel on the treatment box is increased, so that the adsorption area and adsorption force of the treatment box on the filter cake are increased, so as to perform an efficient dehydration operation on the filter cake;

[0023] Step 3: When the processing box moves to the unloading area, the airflow passes through the filter cloth from the inside to the outside to loosen the filter cake, and at the same time increases the distance between the sliding magnetic component and the filter cloth, reducing the magnetic force generated by the sliding magnetic component, and the driving component drives the rotating shaft to rotate, so that the cam knocking block continuously knocks the outer partition and the inner partition to vibrate the filter cloth. The combination of the two makes it easier for the filter cake to separate from the filter cloth and into the guide plate.

[0024] Compared with the prior art, the present invention has the following beneficial effects: when the processing box is located in the filtration area, the adsorption area and adsorption force of the processing box on the filter cake become smaller, and the sliding magnetic component generates a larger magnetic force. The two cooperate to form a filter cake of suitable thickness on the filter cloth; when the processing box is located in the dehydration area, the adsorption area and adsorption force of the processing box on the filter cake increase, so as to effectively increase the dehydration effect and dehydration speed of the filter cake and reduce the moisture content of the filter cake; when the processing box is located in the unloading area, the air flow passes through the filter cloth from the inside to the outside to loosen the filter cake, and the adsorption area and adsorption force of the processing box on the filter cake increase. As the force becomes smaller, the sliding magnetic component automatically moves away from the filter cloth to generate a smaller magnetic force, and the driving component drives the rotating shaft to rotate, so that the cam knocking block continuously knocks the outer partition and the inner partition to vibrate the filter cloth. The combination of the two makes it easier for the filter cake to separate from the filter cloth and into the guide plate; the processing box of this device has a simple structure, and the control structure is set to the outside of the processing box, which is easy to inspect and maintain the device, and the adsorption force, magnetic force and vibration effect on the filter cloth generated by the processing box can be controlled only by the rotation of the rotating drum. The mechanical control logic is clear, not easy to damage, and easy to debug. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0026] Figure 1 A perspective view of a rare earth impurity removal device for rare earth processing according to the present invention;

[0027] Figure 2 A three-dimensional diagram of the present invention hiding the filter cloth;

[0028] Figure 3 This is a right side view of the present invention with the filter cloth hidden;

[0029] Figure 4 It is a front cross-sectional view of a rare earth impurity removal treatment device for rare earth processing according to the present invention;

[0030] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0031] Figure 6 This is a schematic diagram of the forward cross-sectional structure of a rare earth impurity removal device for rare earth processing according to the present invention;

[0032] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0033] Figure 8 This is a partial structural diagram of a rare earth impurity removal device for rare earth processing according to the present invention. Figure 1 ;

[0034] Figure 9 This is a partial structural diagram of a rare earth impurity removal device for rare earth processing according to the present invention. Figure 2 ;

[0035] Figure 10 for Figure 9 Enlarged view of point C in the middle;

[0036] Figure 11 for Figure 9 Schematic diagram with some of the structure removed;

[0037] Figure 12 It is a structural schematic diagram of the processing box of the present invention;

[0038] Figure 13 It is a structural schematic diagram of the control track of the vacuum degree automatic control mechanism of the present invention.

[0039] The numbers in the figure represent:

[0040] 10. Frame; 11. Bracket; 12. Spindle; 13. Distribution head; 14. Guide plate; 15. Rotating drum; 16. Filter cloth; 17. Pipeline; 18. Fixed ring plate; 2. Processing box; 3. Automatic vacuum control mechanism; 31. Outer partition; 32. Inner partition; 33. Connecting plate; 34. Ball; 35. Control track; 4. Automatic adjustment magnetic mechanism; 41. Magnetic block; 42. Sliding seat; 43. Sliding rod; 44. Adjusting roller; 45. Fixed plate; 46. Adjusting track; 5. Auxiliary cleaning and unloading mechanism; 51. Rotating shaft; 52. Cam knocking block; 53. Ring gear; 54. Gear; 55. Locking plate; 56. Connecting rod; 57. Locking roller. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] Example 1: In some embodiments, please refer to the accompanying drawings of the specification. Figure 1-Figure 5 A rare earth impurity removal device for rare earth processing includes a frame 10, a bracket 11, a main shaft 12, a distribution head 13, a material guide plate 14, a rotating drum 15 and a filter cloth 16;

[0043] Two brackets 11 are symmetrically fixedly mounted on the upper end of the frame 10, a main shaft 12 is fixedly mounted between the brackets 11, and a rotating drum 15 is rotatably mounted on the main shaft 12. A plurality of processing boxes 2 are evenly spaced and arranged in a circular array along the edge of the rotating drum 15. A filter cloth 16 is fixedly mounted on the outer ring surface of the rotating drum 15. A distribution head 13 is provided on the side of the rotating drum 15, and the processing boxes 2 are connected to the distribution head 13 via a pipe 17. A guide plate 14 is also fixedly mounted on the side of the frame 10 for receiving the filter cake unloaded from the filter cloth 16. Fixed ring plates 18 are also symmetrically fixedly mounted at both ends of the frame 10.

[0044] The distribution head 13 is connected to the negative pressure device and the blowing device respectively. The negative pressure device can adopt a vacuum tank. The vacuum pump is used to draw vacuum from the vacuum tank to provide vacuum for the inside of the processing box 2. The blowing device can adopt a compressed gas tank. The air compressor is used to inject compressed air into the compressed gas tank to blow air into the inside of the processing box 2. The distribution head 13 adopts mature technology in this field and is mainly composed of a fixed plate and a movable plate. The fixed plate of the distribution head 13 is installed on the main shaft 12, and the movable plate of the distribution head 13 is installed on the rotating drum 15. During the rotation of the rotating drum 15, the relative positions of the fixed plate and the movable plate are controlled to automatically switch the processing box 2 to the negative pressure device and the blowing device, so that the processing box 2 is located in the filtration area (the processing box 2 is immersed in the filter slurry to form a filter cake on the filter cloth 16), the dehydration area (the processing box 2 is rotated out of the filter slurry tank to dehydrate the filter cake on the filter cloth 16) and the unloading area (compressed air passes through the filter cloth 16 from the inside to the outside to loosen the filter cake).

[0045] The processing box 2 is provided with a vacuum automatic control mechanism 3 for making the suction force of the processing box 2 small when it is in the filtration area and large when it is in the dehydration area. The vacuum automatic control mechanism 3 includes an outer partition 31, an inner partition 32 and a control component. The outer partition 31 is provided on the side of the processing box 2 close to the filter cloth 16. The processing box 2 is provided with an inner partition 32 that is in contact with the outer partition 31 and can slide along the length direction of the outer partition 31. Through holes are evenly opened on the outer partition 31 and the inner partition 32, and the through holes on the outer partition 31 and the inner partition 32 correspond to each other one by one. The intersection of the through holes on the outer partition 31 and the inner partition 32 constitutes an air flow channel; control components for driving the inner partition 32 to slide relative to each other along the length direction of the outer partition 31 to control the cross-sectional size of the air flow channel are symmetrically provided on both sides of the rotating drum 15;

[0046] The processing box 2 is provided with an automatically adjustable magnetic mechanism 4 for making the magnetic force larger when the processing box 2 is in the filtration area and dehydration area and smaller when it is in the unloading area, as well as an auxiliary cleaning and unloading mechanism 5 for vibrating the filter cloth 16 when the processing box 2 is in the unloading area to facilitate the falling off of the filter cake.

[0047] In the present invention, the drum 15 rotates continuously. When the treatment box 2 is immersed in the rare earth solution, the outer partition 31 and the inner partition 32 are partially dislocated, the cross-section of the airflow channel is small, the resistance of the airflow generated by the negative pressure device increases, and the adsorption area of ​​the filter cake by the treatment box 2 also becomes smaller. At the same time, the automatically adjustable magnetic mechanism 4 generates a large magnetic force. The two cooperate to form a filter cake of appropriate thickness on the filter cloth 16. After the treatment box 2 rotates out of the rare earth solution, the control component drives the inner partition 32 to slide relatively along the length direction of the outer partition 31, so that the through holes on the outer partition 31 and the inner partition 32 are concentrically arranged and completely aligned. The cross section of the air flow channel is the largest, thereby effectively increasing the adsorption force on the filter cake on the filter cloth 16, increasing the dehydration effect and dehydration speed of the filter cake, and reducing the moisture content of the filter cake; when the processing box 2 moves to the unloading area, the air flow generated by the blowing device passes through the filter cloth 16 from the inside to the outside to loosen the filter cake, the automatically adjusting magnetic mechanism 4 generates a smaller magnetic force, and the auxiliary cleaning and unloading mechanism 5 causes the filter cloth 16 to vibrate. The combination of the two makes it easier for the filter cake to fall off from the filter cloth 16 and be discharged onto the guide plate 14, effectively improving the unloading efficiency of the filter cake and preventing the filter cake from adhering to the filter cloth 16.

[0048] See also Figure 5 、 Figure 10 、 Figure 12 and Figure 13 The control assembly includes a connecting plate 33, a ball bearing 34 and a control track 35. The connecting plate 33 is connected to the side of the processing box 2 in a limited sliding manner. The end of the connecting plate 33 located on the inner side of the processing box 2 is fixedly connected to the inner partition 32. The end of the connecting plate 33 located on the outer side of the processing box 2 is provided with a ball bearing 34. The control track 35 rollingly connected to the ball bearing 34 is fixedly installed on the fixed ring plate 18.

[0049] The control track 35 is arranged in a ring shape and is concentric with the main shaft 12. The control track 35 is composed of a section A located in the filtration area and a section B located in the dehydration area. The thickness of the sections A and B of the control track 35 on the same fixed ring plate 18 is different. The thickness of the sections A and B of the control track 35 on the two fixed ring plates 18 is opposite, and the thickness difference between the sections A and B of the control track 35 is the same. For example, the thickness of the sections A and B of the control track 35 on the front fixed ring plate 18 are 10 mm and 12 mm respectively, and the thickness of the sections A and B of the control track 35 on the rear fixed ring plate 18 can be 12 mm and 10 mm respectively. When the ball 34 is on the control track 35, the thickness of the sections A and B of the control track 35 on the rear fixed ring plate 18 can be 12 mm and 10 mm respectively. When rolling on section B, the through holes on the outer partition 31 and the inner partition 32 are concentrically arranged and completely aligned, the cross-section of the airflow channel is maximized, the adsorption force of the processing box 2 on the filter cake is greater, and the dehydration efficiency of the filter cake is higher; when the ball 34 rolls on section A of the control track 35, the control tracks 35 on the two fixed ring plates 18 cooperate to push the connecting plate 33 to move, thereby causing the inner partition 32 to slide relative to each other along the length direction of the outer partition 31, causing the through holes on the outer partition 31 and the inner partition 32 to be partially misaligned, the cross-section of the airflow channel becomes smaller, the resistance when the airflow passes through increases, and the adsorption area of ​​the filter cake by the processing box 2 also becomes smaller, so that the filter cake formed when the processing box 2 is located in the filtration area has an appropriate thickness;

[0050] See also Figure 4 、 Figure 6 、 Figure 7 and Figure 11 The automatically adjustable magnetic mechanism 4 includes a sliding magnetic component and an adjusting component. A sliding magnetic component that can move radially along the drum 15 is provided in the processing box 2. Adjusting components for driving the sliding magnetic component to perform telecentric motion when the processing box 2 is located in the filtration area and the dehydration area and to perform proximal motion when the processing box 2 is located in the unloading area are symmetrically provided at both ends of the main shaft 12.

[0051] The sliding magnetic assembly includes a magnetic block 41, a sliding seat 42, and a sliding rod 43. The magnetic block 41 is disposed inside the processing box 2. Two sliding seats 42 are symmetrically fixedly mounted at both ends of the inner annular surface of the processing box 2. The sliding rod 43 is connected to the sliding seat 42 in a limited sliding manner. The sliding rod 43 is also fixedly connected to the magnetic block 41, so that the magnetic block 41 can slide radially along the rotating drum 15.

[0052] The adjustment assembly includes an adjustment roller 44, a fixed plate 45 and an adjustment track 46. The adjustment roller 44 is rotatably mounted on the end of the sliding rod 43 away from the magnetic block 41. The fixed plate 45 is fixedly connected to the main shaft 12. The fixed plate 45 is provided with an adjustment track 46 that is rollingly connected to the adjustment roller 44.

[0053] The adjustment track 46 is composed of a distal section located in the filtration area and the dehydration area and a proximal section located in the discharge area. The adjustment tracks 46 of the distal section and the proximal section are both arc-shaped and concentric with the main shaft 12. At the same time, the diameter of the adjustment track 46 of the distal section is larger than the diameter of the adjustment track 46 of the proximal section.

[0054] In the present invention, when the adjusting roller 44 rolls on the distal section of the adjusting track 46, the magnetic block 41 is close to the outer partition 31 of the processing box 2, and the distance between the magnetic block 41 and the filter cloth 16 is close, the magnetic force generated is large, and the adsorption capacity of the filter cake is strong; when the adjusting roller 44 moves on the proximal section of the adjusting track 46, the magnetic block 41 is away from the outer partition 31 of the processing box 2, and the distance between the magnetic block 41 and the filter cloth 16 is far, the magnetic force generated is small, and the adsorption capacity of the filter cake is weak, so that the adjusting roller 44 and the adjusting track 46 cooperate to automatically control the distance between the magnetic block 41 and the filter cloth 16 when the drum 15 rotates, thereby realizing the control of the adsorption capacity of the filter cake, which is conducive to forming a filter cake of suitable thickness and performing efficient dehydration operations on the filter cake.

[0055] See also Figure 5 、 Figure 10-12 The auxiliary cleaning and unloading mechanism 5 includes a rotating shaft 51, a cam knocking block 52, a driving assembly and a locking assembly. The rotating shaft 51 is rotatably connected to the side wall of the processing box 2. A plurality of cam knocking blocks 52 for knocking the inner partition 32 to vibrate the filter cloth 16 are fixedly mounted on the rotating shaft 51. Both ends of the rotating shaft 51 pass through the side walls of the processing box 2 and are respectively connected to the driving assembly. A locking assembly is provided on the driving assembly. The driving assembly is used to control the rotation of the rotating shaft 51 when the processing box 2 is located in the unloading area. The locking assembly is used to control the rotating shaft 51 to be locked and fixed after the processing box 2 leaves the unloading area;

[0056] The driving assembly includes a ring gear 53 and a gear 54. The gear 54 is fixedly connected to the end of the rotating shaft 51. The ring gear 53 is fixedly mounted on the fixed ring plate 18. The ring gear 53 is located in the unloading area and is meshed with the gear 54.

[0057] The locking assembly includes a locking plate 55, a connecting rod 56 and a locking roller 57. The connecting rod 56 is fixedly mounted at the eccentric position of the gear 54. The end of the connecting rod 56 is rotatably mounted with the locking roller 57. The locking plate 55 is fixedly mounted on the fixed ring plate 18. The locking plate 55 is configured as an arc and is concentric with the main shaft 12. The locking plate 55 is arranged in the filtering area and the dehydration area. The locking plate 55 is located on the side of the gear 54 away from the ring gear 53 and is in rolling connection with the locking roller 57.

[0058] In the present invention, when the processing box 2 is transferred from the dehydration area to the unloading area, the locking roller 57 is disengaged from the locking plate 55 without being blocked, and the ring gear 53 and the gear 54 cooperate to drive the rotating shaft 51 to rotate, so that the cam knocking block 52 continuously knocks the cam knocking block 52, causing the rotating shaft 51 and the cam knocking block 52 to vibrate, thereby making it easier for the filter cake on the corresponding part of the filter cloth 16 to detach. When the processing box 2 is transferred from the unloading area to the filtration area, the gear 54 is separated from the ring gear 53, and the locking roller 57 rolls on the outside of the locking plate 55, so that the ring gear 53 maintains the current state, thereby avoiding the tooth-hitting phenomenon when the ring gear 53 and the gear 54 contact again, and ensuring the stability of the rotating shaft 51 and the cam knocking block 52.

[0059] Embodiment 2: In some embodiments, as Figures 1-13 As shown, as a preferred embodiment of the present invention, a method for treating a rare earth impurity removal device for rare earth processing comprises the following steps:

[0060] Step 1: When the treatment box 2 is immersed in the rare earth solution, the cross-section of the air flow channel on the treatment box 2 is small, so that the adsorption area and adsorption force of the treatment box 2 on the filter cake are also reduced. The distance between the sliding magnetic component and the filter cloth 16 is close, which generates a large magnetic force. The two cooperate to form a filter cake on the filter cloth 16;

[0061] Step 2: After the rare earth solution is transferred out of the treatment box 2, the cross-section of the air flow channel on the treatment box 2 is increased, so that the adsorption area and adsorption force of the treatment box 2 on the filter cake are increased, so as to perform an efficient dehydration operation on the filter cake;

[0062] Step 3: When the processing box 2 moves to the unloading area, the air flow passes through the filter cloth 16 from the inside to the outside to loosen the filter cake, while increasing the distance between the sliding magnetic component and the filter cloth 16, reducing the magnetic force generated by the sliding magnetic component, and the driving component drives the rotating shaft 51 to rotate, so that the cam knocking block 52 continuously knocks the outer partition 31 and the inner partition 32 to vibrate the filter cloth 16. The cooperation between the two makes it easier for the filter cake to separate from the filter cloth 16 into the guide plate 14.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A rare earth impurity removal device for rare earth processing, comprising a frame (10) and a bracket (11) fixedly mounted on the frame (10), a spindle (12), a guide plate (14) and a fixed ring plate (18), characterized in that: The main shaft (12) is fixedly mounted between the brackets (11), the rotating drum (15) is rotatably mounted on the main shaft (12), the outer ring surface of the rotating drum (15) is fixedly mounted with a filter cloth (16), the edge of the rotating drum (15) is evenly arranged with a plurality of processing boxes (2) in a circular array at equal intervals, the side of the rotating drum (15) is provided with a distribution head (13), and the processing box (2) is connected to the distribution head (13) through a pipe (17); A vacuum degree automatic control mechanism (3) for adjusting the suction force on the filter cake is provided in the processing box (2), and the vacuum degree automatic control mechanism (3) includes an outer partition (31), an inner partition (32) and a control component. The outer partition (31) is provided on a side of the processing box (2) close to the filter cloth (16), and the inner partition (32) is located inside the processing box (2) and slides in contact with the outer partition (31). A plurality of through holes corresponding to each other are evenly opened on the outer partition (31) and the inner partition (32); and control components for driving the inner partition (32) and the outer partition (31) to slide relative to each other are symmetrically provided on both sides of the rotating drum (15); An automatically adjustable magnetic mechanism (4) for adjusting the magnitude of the magnetic force on the filter cake and an auxiliary cleaning and unloading mechanism (5) for making it easier for the filter cake to be separated from the processing box (2) are provided in the processing box (2); The control assembly includes a connecting plate (33), a ball bearing (34) and a control track (35), wherein the connecting plate (33) is limitedly slidably connected to the side of the processing box (2), one end of the connecting plate (33) located inside the processing box (2) is fixedly connected to the inner partition (32), and one end of the connecting plate (33) located outside the processing box (2) is provided with a ball bearing (34), and a control track (35) in rolling connection with the ball bearing (34) is fixedly mounted on the fixed ring plate (18); The control track (35) is arranged in an annular shape and is arranged concentrically with the main shaft (12). The control track (35) is composed of a section A located in the filtration area and a section B located in the dehydration area. The thickness of the section A and the section B of the control track (35) on the same fixed ring plate (18) are different. The thickness of the section A and the section B of the control track (35) on the two fixed ring plates (18) are opposite, and the difference in thickness between the section A and the section B of the control track (35) is the same. The automatic adjustment type magnetic mechanism (4) comprises a sliding magnetic component and an adjustment component. A sliding magnetic component that can move radially along the rotating drum (15) is provided in the processing box (2). Adjustment components for driving the sliding magnetic component to perform telecentric movement when the processing box (2) is located in the filtering area and the dehydration area, and to perform proximal movement when the processing box (2) is located in the unloading area, are symmetrically provided at both ends of the main shaft (12). The adjustment assembly includes an adjustment roller (44), a fixed plate (45) and an adjustment track (46); the adjustment roller (44) is rotatably mounted on the end of the sliding magnetic assembly; the fixed plate (45) is fixedly connected to the main shaft (12); and the fixed plate (45) is provided with an adjustment track (46) that is rollingly connected to the adjustment roller (44); The regulating track (46) is composed of a distal section located in the filtration area and the dehydration area and a proximal section located in the unloading area. The regulating tracks (46) of the distal section and the proximal section are both arranged in an arc shape and are arranged concentrically with the main shaft (12). At the same time, the diameter of the regulating track (46) of the distal section is larger than the diameter of the regulating track (46) of the proximal section.

2. The rare earth impurity removal device for rare earth processing according to claim 1, characterized in that: The auxiliary cleaning and unloading mechanism (5) comprises a rotating shaft (51), a cam knocking block (52), a driving assembly and a locking assembly. The rotating shaft (51) is rotatably connected to the side wall of the processing box (2). A plurality of cam knocking blocks (52) for knocking the inner partition (32) to vibrate the filter cloth (16) are fixedly mounted on the rotating shaft (51). Both ends of the rotating shaft (51) pass through the side wall of the processing box (2) and are respectively connected to the driving assembly. The driving assembly is provided with a locking assembly. The driving assembly is used to control the rotation of the rotating shaft (51) when the processing box (2) is located in the unloading area. The locking assembly is used to control the rotation of the rotating shaft (51) after the processing box (2) leaves the unloading area.

3. The rare earth impurity removal device for rare earth processing according to claim 2, characterized in that: The driving assembly comprises a ring gear (53) and a gear (54), wherein the gear (54) is fixedly connected to the end of the rotating shaft (51), and the ring gear (53) is fixedly mounted on the fixed ring plate (18). The ring gear (53) is located in the unloading area and is meshed with the gear (54).

4. The rare earth impurity removal device for rare earth processing according to claim 3, characterized in that: The locking assembly comprises a locking plate (55), a connecting rod (56) and a locking roller (57), wherein the connecting rod (56) is fixedly mounted at an eccentric position of the gear (54), and the locking roller (57) is rotatably mounted on the end of the connecting rod (56). The locking plate (55) is fixedly mounted on the fixed ring plate (18), and the locking plate (55) is arranged in an arc shape and is arranged concentrically with the main shaft (12). The locking plate (55) is arranged in the filtering area and the dehydration area, and the locking plate (55) is located on a side of the gear (54) away from the ring gear (53) and is rollingly connected to the locking roller (57).

5. A treatment method, using the rare earth impurity removal treatment device for rare earth processing according to claim 4, characterized in that: The following steps are involved: Step 1: When the treatment box (2) is immersed in the rare earth solution, the cross-section of the air flow channel on the treatment box (2) is small, so that the adsorption area and adsorption force of the treatment box (2) on the filter cake also become smaller, while the distance between the sliding magnetic component and the filter cloth (16) is close, generating a larger magnetic force, and the two cooperate to form a filter cake on the filter cloth (16); Step 2: After the rare earth solution is transferred out of the treatment box (2), the cross section of the air flow channel on the treatment box (2) is increased, so that the adsorption area and adsorption force of the treatment box (2) on the filter cake are increased, so as to perform an efficient dehydration operation on the filter cake; Step 3: When the processing box (2) moves to the unloading area, the air flow passes through the filter cloth (16) from the inside to the outside to loosen the filter cake, while increasing the distance between the sliding magnetic component and the filter cloth (16), reducing the magnetic force generated by the sliding magnetic component, and the driving component drives the rotating shaft (51) to rotate, so that the cam knocking block (52) continuously knocks the outer partition (31) and the inner partition (32) to vibrate the filter cloth (16). The cooperation of the two makes it easier for the filter cake to detach from the filter cloth (16) and enter the guide plate (14).

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