Neodymium iron boron extraction liquid filtering device

Abstract

The present application relates to a kind of neodymium iron boron extraction liquid filtering device, including barrel, the barrel top is provided with the flow guide hopper extending to its opening, wherein the flow guide hopper below the barrel is provided with filter cartridge, and filter cartridge is suspended at high place by motor at the bottom of barrel through drive shaft, the filter cartridge is provided with filter-pressing mechanism extending into the flow guide hopper, wherein the outer side of filter cartridge is provided with cleaning mechanism connected with filter-pressing mechanism.The present application is convenient to filter operation to waste extraction liquid, wherein filter efficiency is improved by filter-pressing mechanism, and filtered neodymium iron boron waste extraction liquid does not appear in discharge outlet accumulation and is not easy to discharge The phenomenon of jam, and filter cartridge outer wall during filtering process can also play the role of cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of neodymium iron boron production, and particularly to a filtration device for neodymium iron boron extract. Background Technology

[0002] Neodymium iron boron (NdFeB) is a type of magnet that differs from the magnets we usually see. It is known as the "King of Magnets" because of its excellent magnetic properties. NdFeB contains a large amount of the rare earth element neodymium, as well as iron and boron. It is hard and brittle.

[0003] Currently, in the NdFeB production process, it is necessary to filter the waste extract. For example, a NdFeB waste extract filtration device with patent number CN112892056B has the following defects in the filtration process: impurities adhering to the outer wall of the filter cylinder are difficult to clean with just a brush, which can easily clog the side wall pores of the filter cylinder and affect the filtration efficiency. Furthermore, relying solely on the centrifugal force generated by rotating the filter cylinder to filter the liquid and impurities inside the filter cylinder is not conducive to improving its filtration efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a filtration device for neodymium iron boron extract.

[0005] The technical problem of this invention is mainly solved by the following technical solution:

[0006] A filtration device for NdFeB extract includes a barrel: a guide bucket extending into its opening is provided at the top of the barrel, and a filter cylinder is provided in the barrel below the guide bucket, and the filter cylinder is suspended at a high position by a motor at the bottom of the barrel through a drive shaft. A filter pressing mechanism extending into the guide bucket is provided in the filter cylinder, and a cleaning mechanism connected to the filter pressing mechanism is provided on the outside of the filter cylinder.

[0007] The filter press mechanism includes a ring located at the bottom of the filter cylinder, wherein a groove is arranged around the outer wall of the ring, and a slider is arranged in the groove on the inner wall of the filter cylinder. Multiple sets of mounting rods I are radially arranged on the inner wall of the ring, wherein a lead screw I extending into the guide hopper is provided on the mounting rod I, and a mounting rod II fixing the top of the lead screw I is provided in the guide hopper. Both the mounting rod I and the mounting rod II are provided with rolling bearings for fixing the lead screw I. A conical filter press plate is provided at the top of the filter cylinder, and arc-shaped notches are evenly provided on the edge of the filter press plate. The filter press plate is also provided with a screw hole I for the lead screw I to pass through, and a gear I is provided on the lead screw I above the filter press plate. An internal gear ring that meshes with the gear I is provided at the open end of the top of the filter cylinder.

[0008] The cleaning mechanism includes a crossbar located on the inner wall of the barrel below the filter cylinder. A lead screw II is provided on the crossbar and connected to a corresponding mounting rod II. Both the crossbar and the mounting rod II are provided with rolling bearings sleeved on the lead screw II. A gear II is provided on the lead screw II. An external gear ring that meshes with the gear II is sleeved at the top of the outer wall of the filter cylinder. An annular seat is sleeved on the filter cylinder. A corresponding protrusion for the lead screw II is provided on the back of the annular seat. A screw hole II for the lead screw II to pass through is provided on the protrusion. A liquid collection groove is arranged around the inner arc wall of the annular seat. A spray pipe is provided on the upper and lower end faces of the annular seat. The spray pipe is provided with a nozzle. The spray pipe is connected to the bottom of the barrel through a circulation pipe. A water pump is provided on the circulation pipe.

[0009] Preferably, the water pump is located on the outside of the tank, and the circulation pipe is a corrugated flexible hose.

[0010] Preferably, the cross-section of the annular seat is an isosceles trapezoidal structure, wherein the bottom edge of the annular seat is tightly attached to the outer wall of the filter cylinder.

[0011] Preferably, the bottom end of the filter cylinder is provided with a constricted section, wherein the outlet end of the guide bucket is located directly above the opening of the filter cylinder, and the guide bucket is fixedly connected to the top of the side wall of the cylinder.

[0012] Preferably, a mounting base is provided at the bottom of the barrel body, wherein the mounting base is provided with a mounting cavity for fixing the motor, and a liquid outlet and a manhole are also provided at the bottom of the side wall of the barrel body.

[0013] Preferably, the side wall of the flow guide bucket is provided with a circular hole for the lead screw II to pass through, and the bottom end of the flow guide bucket is also provided with a flexible skirt extending into the top opening of the filter cylinder.

[0014] Preferably, a scraper is radially arranged at the bottom of the filter cylinder, wherein the top end of the scraper is connected to the corresponding mounting rod I via a vertical rod, and a slag discharge pipe is also provided on the bottom wall of the filter cylinder.

[0015] The beneficial effects of this invention are as follows: In this invention, the filter plate in the filter press mechanism moves downwards, allowing the liquid inside the filter cylinder to drain quickly during rotation, thereby improving filtration efficiency. Simultaneously, the annular seat in the cleaning mechanism moves up and down on the outer wall of the filter cylinder. During this movement, the annular seat can scrape off impurities from the outer wall of the filter cylinder, or draw liquid into a spray pipe that moves with the annular seat, which is then sprayed out by the nozzle, thus cleaning the outer wall of the filter cylinder. At the same time, the liquid in the collection tank of the annular seat can soak different areas of the outer wall of the filter cylinder, facilitating the cleaning of the outer wall by the liquid sprayed from the annular seat and nozzle, preventing blockage of the filter cylinder sidewalls, and thus improving filtration efficiency. Furthermore, while the motor drives the filter cylinder to rotate, it can also indirectly drive the filter press mechanism and the cleaning mechanism to rotate together, achieving a multi-purpose design. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the filter plate structure in this invention;

[0018] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Barrel body, 2. Guide bucket, 3. Filter cylinder, 4. Motor, 5. Filter press mechanism, 51. Ring, 52. Slider, 53. Mounting rod I, 54. Lead screw I, 55. Mounting rod II, 56. Filter press plate, 57. Arc-shaped notch, 58. Gear I, 59. Internal gear ring, 6. Cleaning mechanism, 61. Crossbar, 62. Lead screw II, 63. Gear II, 64. External gear ring, 65. Annular seat, 66. Boss, 67. Liquid collection tank, 68. Spray pipe, 69. Spray head, 610. Circulation pipe, 611. Water pump, 7. Narrowing part, 8. Mounting seat, 9. Scraper, 10. Vertical rod, 11. Slag discharge pipe. Detailed Implementation

[0020] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0021] A filtration device for NdFeB extract includes a barrel 1: a guide bucket 2 extending into its opening is provided at the top of the barrel 1, and a filter cylinder 3 is provided inside the barrel 1 below the guide bucket 2. The filter cylinder 3 is suspended at a high position by a motor 4 at the bottom of the barrel 1 via a drive shaft. A pressure filter mechanism 5 extending into the guide bucket 2 is provided inside the filter cylinder 3, and a cleaning mechanism 6 connected to the pressure filter mechanism 5 is provided on the outside of the filter cylinder 3.

[0022] The filter press mechanism 5 includes a ring 51 located at the bottom of the filter cylinder 3. A groove is arranged around the outer wall of the ring 51, and a slider 52 located in the groove is arranged on the inner wall of the filter cylinder 3. Multiple sets of mounting rods I53 are radially arranged on the inner wall of the ring 51. A lead screw I54 is provided on the mounting rod I53 and extends into the guide bucket 2. A mounting rod II55 is provided in the guide bucket 2 to fix the top of the lead screw I54. Rolling bearings for fixing the lead screw I54 are provided on both the mounting rod I53 and the mounting rod II55. A conical filter press plate 56 is provided at the top of the filter cylinder 3. Arc-shaped notches 57 are evenly arranged on the edge of the filter press plate 56. A screw hole I for the lead screw I54 to pass through is also provided on the filter press plate 56. A gear I58 is provided on the lead screw I54 above the filter press plate 56. An internal gear ring 59 that meshes with the gear I58 is provided on the open end of the top of the filter cylinder 3.

[0023] The cleaning mechanism 6 includes a crossbar 61 located on the inner wall of the barrel 1 below the filter cylinder 3. A lead screw II 62 connected to a corresponding mounting rod II 55 is mounted on the crossbar 61. Both the crossbar 61 and the mounting rod II 55 are fitted with rolling bearings sleeved on the lead screw II 62. A gear II 63 is mounted on the lead screw II 62. An external gear ring 64 meshing with the gear II 63 is sleeved at the top of the outer wall of the filter cylinder 3. An annular seat 65 is sleeved on the filter cylinder 3. The annular seat 65 has a corresponding protrusion 66 on its back, and the protrusion 66 has a screw hole II for the screw II 62 to pass through. A liquid collection groove 67 is arranged around the inner arc wall of the annular seat 61. A spray pipe 68 is arranged on the upper and lower end faces of the annular seat 61, and a nozzle 69 is provided on the spray pipe 68. The spray pipe 68 is connected to the bottom of the tank 1 through a circulation pipe 610, and a water pump 611 is provided on the circulation pipe 610.

[0024] like Figure 1 As shown, the water pump 611 is located on the outside of the tank body 1, and the circulation pipe 610 is a corrugated hose.

[0025] like Figure 3 As shown, the cross-section of the annular seat 61 is an isosceles trapezoidal structure, wherein the bottom edge of the annular seat 61 is tightly attached to the outer wall of the filter cylinder 3.

[0026] like Figure 3 As shown, the bottom end of the filter cylinder 3 is provided with a constricted portion 7, wherein the outlet end of the guide bucket 2 is located directly above the opening of the filter cylinder 3, and the guide bucket 2 is fixedly connected to the top of the side wall of the barrel body 1. When the annular seat 61 is moved to the bottom end of the filter cylinder 3, its lower half opening is engaged with the constricted portion 7. At this time, the lower half opening of the liquid collection groove 67 on the inner arc wall of the annular seat 61 is in an open state, so that the liquid or impurities accumulated inside can be discharged through its open opening end.

[0027] In this embodiment, a mounting base 8 is provided at the bottom of the inner wall of the barrel 1, wherein the mounting base 8 is provided with a mounting cavity for fixing the motor 4. A liquid outlet and a manhole are also provided at the bottom of the side wall of the barrel 1. The filtered liquid at the bottom of the barrel 1 is discharged through the liquid outlet, and the manhole facilitates people to enter the bottom of the barrel 1 for operation.

[0028] like Figure 1 As shown, the guide bucket 2 has a circular hole on its side wall for the lead screw II62 to pass through, and the bottom end of the guide bucket 2 is also provided with a flexible skirt that extends into the top opening of the filter cylinder 3. The skirt guides the liquid flowing out of the guide bucket 2 into the filter cylinder 3, preventing the liquid flowing down from the guide bucket 2 from flowing out through the gap between its bottom end and the top end of the filter cylinder 3.

[0029] like Figure 1 , 3 As shown, a scraper 9 is radially arranged at the bottom of the filter cylinder 3. The top of the scraper 9 is connected to the corresponding mounting rod I53 via a vertical rod 10. A slag discharge pipe 11 is also provided on the bottom wall of the filter cylinder 3. When the filter cylinder 3 is driven to rotate by the motor 4, the impurities that have been filtered at the bottom of the filter cylinder 3 will rotate with the rotation of the filter cylinder 3 and come into contact with the scraper 9. At this time, the scraper 9 can agitate the impurities that may be clump together at the bottom of the filter cylinder 3, making them loose so that they can be discharged through the open slag discharge pipe 11.

[0030] The method of using this invention is as follows: The extract is injected through the guide bucket 2. At this time, the extract flows into the filter cylinder 3 through the skirt, and then flows along the top inclined surface of the filter press plate 56 to the arc-shaped notch 57 on its edge, and finally flows into the filter cylinder 3 below the filter press plate 56. The motor 4 drives the filter cylinder 3 to rotate to generate centrifugal force, so that the liquid in the extract inside it is drained out from the holes in its side wall or bottom wall. During the rotation of the filter cylinder 3, the internal gear ring 59 drives the gear I58 and the lead screw I54 to rotate together. At this time, when the upper and lower ends of the lead screw I54 rotate in the rolling bearings in the mounting rod I53 and mounting rod II55, it will also rotate in the screw hole I on the filter press plate 56, thereby driving the filter press plate 56 to move downward. During the downward movement, the filter press plate 56 can squeeze the extract in the filter cylinder 3, so that the liquid flows out quickly from the side wall holes of the filter cylinder 3, while the impurities are compressed at the bottom of the filter cylinder 3, thus achieving the purpose of solid-liquid separation.

[0031] Meanwhile, when the filter cylinder 3 rotates, it drives the lead screw II 62 to rotate on the rolling bearings on the mounting rod II 55 and the crossbar 61 via the external gear ring 64 and gear II 63. At this time, the lead screw II 62 also rotates in the screw hole II in the boss 66, driving the boss 66 to move the annular seat 65 upward on the filter cylinder 3. As the annular seat 65 moves up and down on the side wall of the filter cylinder 3, it scrapes off the impurities on its outer wall. At the same time, the water pump 611 draws the liquid from the bottom of the tank 1 into the spray pipe 68 through the circulation pipe 610. As the annular seat 65 moves up and down on the spray pipe 68, the liquid on the spray pipe 68 is removed. The liquid sprayed from the nozzle 69 can spray and clean the outer wall of the filter cylinder 3. At the same time, when the annular seat 65 moves upward on the filter cylinder 3, the liquid dripping from the holes on the side wall of the filter cylinder 3 will flow into the collection tank 67. The liquid in the collection tank 67 will soak the cleaned outer wall of the filter cylinder 3. When the annular seat 65 moves on the filter cylinder 3, it will cause the liquid in the collection tank 67 to cover the entire outer wall of the filter cylinder 3, thereby soaking the outer wall and separating the impurities from the outer wall of the filter cylinder 3. Alternatively, after the impurities on the outer wall are soaked, the liquid sprayed from the nozzle 69 or the annular seat 65 can more easily wash away the impurities after soaking the outer wall of the filter cylinder 3.

[0032] After filtration, the liquid at the bottom of the barrel 1 can be discharged through the outlet, while the impurities at the bottom of the filter cylinder 3 can be discharged through the manhole and slag discharge pipe 11 after being stirred by the scraper 9. Finally, the motor 4 reverses, indirectly causing the filter press plate 56 to move upward and the annular seat 65 to move downward. The above steps can then be repeated, or the filter can be used for the next processing.

[0033] During the above process, the filter cylinder 3 rotates and drives the slider 52 to slide in the groove on the ring 51, preventing the ring 51 from hindering the rotation of the filter cylinder 3. The filter cylinder 3, in turn, uses the slider 52 to press against the ring 51, thereby indirectly fixing and limiting the bottom end of the lead screw I54 and reducing its swing amplitude. At the same time, the guide bucket 2, through the mounting rod II55, lead screw I54, mounting rod I53, ring 51 and slider 52, can support and fix the suspended end of the filter cylinder 3 at the edge, preventing it from being suspended over a large area and causing insufficient stability.

[0034] In this invention, the filter plate 56 in the filter press mechanism 5 moves downward, allowing the liquid in the filter cylinder 3 to drain out quickly during rotation, thereby improving filtration efficiency. Simultaneously, the annular seat 65 in the cleaning mechanism 6 moves up and down on the outer wall of the filter cylinder 3. During this movement, the annular seat 65 can scrape off impurities from the outer wall of the filter cylinder 3. Alternatively, liquid can be drawn into the spray pipe 68, which moves along with the annular seat 65, and then sprayed out by the nozzle 69, thus cleaning the outer wall of the filter cylinder 3. At the same time, the liquid in the collection tank 67 of the annular seat 65 can soak different areas of the outer wall of the filter cylinder 3, facilitating the cleaning of the outer wall by the liquid sprayed from the annular seat 65 and the nozzle 69, preventing blockage of the filter cylinder 3's sidewalls, and thus improving its filtration efficiency. In this invention, while the motor 4 drives the filter cylinder 3 to rotate, it can also indirectly drive the filter press mechanism 5 and the cleaning mechanism 6 to rotate together, achieving a multi-purpose design.

[0035] The present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A filtration device for NdFeB extract, comprising a barrel, characterized in that: The top of the barrel is provided with a guide bucket extending into its opening, and a filter cylinder is provided in the barrel below the guide bucket. The filter cylinder is suspended at a high position by a motor at the bottom of the barrel through a drive shaft. A filter pressing mechanism is provided in the filter cylinder extending into the guide bucket, and a cleaning mechanism connected to the filter pressing mechanism is provided on the outside of the filter cylinder. The filter press mechanism includes a ring located at the bottom of the filter cylinder, wherein a groove is arranged around the outer wall of the ring, and a slider is arranged in the groove on the inner wall of the filter cylinder. Multiple sets of mounting rods I are radially arranged on the inner wall of the ring, wherein a lead screw I extending into the guide hopper is provided on the mounting rod I, and a mounting rod II fixing the top of the lead screw I is provided in the guide hopper. Both the mounting rod I and the mounting rod II are provided with rolling bearings for fixing the lead screw I. A conical filter press plate is provided at the top of the filter cylinder, and arc-shaped notches are evenly provided on the edge of the filter press plate. The filter press plate is also provided with a screw hole I for the lead screw I to pass through, and a gear I is provided on the lead screw I above the filter press plate. An internal gear ring that meshes with the gear I is provided at the open end of the top of the filter cylinder. The cleaning mechanism includes a crossbar located on the inner wall of the barrel below the filter cylinder. A lead screw II connected to a corresponding mounting rod II is mounted on the crossbar. Both the crossbar and the mounting rod II are fitted with rolling bearings sleeved on the lead screw II. A gear II is mounted on the lead screw II. An external gear ring meshing with the gear II is sleeved at the top of the outer wall of the filter cylinder. An annular seat with an isosceles trapezoidal cross-section is sleeved on the filter cylinder. The bottom edge of the annular seat is tightly attached to the outer wall of the filter cylinder. A corresponding boss to the lead screw II is located on the back of the annular seat, and a screw hole II for the lead screw II to pass through is provided on the boss. A liquid collection groove is arranged around the inner arc wall of the annular seat. A ring of spray pipes with nozzles is arranged on the upper and lower end faces of the annular seat. The spray pipes are connected to the bottom of the barrel through a circulation pipe, which is equipped with a water pump.

2. The NdFeB extract filtration device according to claim 1, characterized in that: The water pump is located on the outside of the tank, and the circulation pipe is a corrugated flexible hose.

3. The NdFeB extract filtration device according to claim 1, characterized in that: The bottom of the filter cylinder is provided with a constricted section, wherein the outlet end of the guide bucket is located directly above the opening of the filter cylinder, and the guide bucket is fixedly connected to the top of the side wall of the cylinder.

4. The NdFeB extract filtration device according to claim 1, characterized in that: The bottom of the barrel is provided with a mounting base, which contains a mounting cavity for fixing the motor. The bottom of the side wall of the barrel is also provided with a liquid outlet and a manhole.

5. The NdFeB extract filtration device according to claim 1, characterized in that: The guide bucket has a circular hole on its side wall for the lead screw II to pass through, and the bottom of the guide bucket is also provided with a flexible skirt that extends into the top opening of the filter cylinder.

6. The NdFeB extract filtration device according to claim 1, characterized in that: A scraper is radially arranged at the bottom of the filter cylinder, and the top of the scraper is connected to the corresponding mounting rod I via a vertical rod. A slag discharge pipe is also provided on the bottom wall of the filter cylinder.

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