High-fineness pulverizer for producing lithium manganese iron phosphate

Abstract

The invention discloses a high-fineness pulverizer for lithium manganese iron phosphate production, and belongs to the field of pulverizers, the high-fineness pulverizer comprises a machine body, a first pulverizing assembly is arranged at the top end of the machine body, and a pulverizing cavity is formed in one side of the interior of the machine body; a second crushing assembly is arranged on the upper portion of the interior of the crushing cavity, a recycling cavity is formed in one side of the crushing cavity, a coarse material recycling assembly is arranged between the lower portion of the interior of the crushing cavity and the recycling cavity, and the second crushing assembly specifically comprises a crushing roller rotationally connected to the interior of the crushing cavity, and a plurality of evenly-distributed annular grooves are formed in the outer side face of the crushing roller; and notches are formed in the positions, corresponding to the annular grooves, of the inner walls of the two sides of the crushing cavity, crushing wheels matched with the annular grooves are rotationally connected into the notches, the crushing wheels extend into the annular grooves, and a rotating motor is fixedly connected to the position, corresponding to the crushing rollers, of one side face of the machine body. According to the crushing device, coarse materials can be effectively recycled for re-crushing, so that the crushing effect is improved.

Description

Technical Field

[0001] The invention relates to the field of pulverizers, in particular to a high-fineness pulverizer for producing lithium manganese iron phosphate. Background Art

[0002] Lithium manganese (II) phosphate, chemical formula: LiMnPO4, is a natural mineral or synthetic ternary lithium battery electrode material. The substance has an olivine-like crystal structure, which results in stable physical and chemical properties when used as an electrode material. And lithium manganese phosphate has a specific capacity of 171mAh / g and a discharge platform of about 4.1V (vsLi / Li+), which also makes lithium manganese phosphate an ideal material for the new generation of lithium-ion power batteries. A crusher is often required in the production process of lithium iron manganese phosphate.

[0003] In order to improve the crushing fineness, the existing crushers usually perform two crushing operations. However, there will still be coarse materials after the second crushing. These coarse materials will not only increase the burden on the filter and damage it, but also affect the filtering effect of the filter. However, if these coarse materials are taken out directly, the workload will increase. Therefore, how to effectively recover the coarse materials for re-crushing has become a difficult problem that needs to be solved urgently.

[0004] Therefore, those skilled in the art provide a high-fineness grinder for producing lithium manganese iron phosphate to solve the problems raised in the above background technology. Summary of the invention

[0005] The object of the present invention is to provide a high-fineness crusher for the production of lithium manganese iron phosphate, which can effectively recover the coarse material for re-crushing, thereby improving the crushing effect, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A high-fineness pulverizer for lithium manganese iron phosphate production comprises a machine body, a first pulverizing assembly is arranged at the top of the machine body, and a pulverizing chamber is opened at one side of the inner part of the machine body; A second crushing assembly is arranged above the interior of the crushing chamber, a recovery chamber is arranged on one side of the crushing chamber, and a coarse material recovery assembly is arranged between the interior of the crushing chamber and the recovery chamber at the lower part.

[0007] As a further solution of the present invention: the second crushing assembly specifically includes: a crushing roller rotatably connected to the inside of the crushing chamber, the outer side surface of the crushing roller is provided with a plurality of evenly distributed annular grooves, and the cross-section of the annular groove is trapezoidal, notches are provided on the inner walls on both sides of the crushing chamber corresponding to the positions of the annular grooves, and a crushing wheel matching the annular groove is rotatably connected inside the notch, the crushing wheel extends into the annular groove, a rotating motor is fixedly connected to the position of the crushing roller on one side of the body, and the output shaft of the rotating motor is fixedly connected to the crushing roller.

[0008] As a further solution of the present invention: the coarse material recovery component specifically includes: a rotating plate located at the lower part of the crushing chamber, one end of the rotating plate is rotatably connected to the inner wall of the crushing chamber, and a filter screen is embedded in the top surface of the rotating plate, a lower material guide trough is provided between the crushing chamber and the recovery chamber, and a strong magnet is embedded in the top of the inner wall of the lower material guide trough, the other end of the rotating plate extends into the lower material guide trough and is magnetically connected to the strong magnet, and a switch material blocking mechanism is provided under the lower material guide trough, a material receiving box matching the recovery chamber is movably connected to the inside of the recovery chamber, and a rectangular groove is provided on the top surface of the material receiving box, a material guiding mechanism is provided inside the rectangular groove, a lifting drive mechanism is provided between the material receiving box and the inner wall of the recovery chamber, and an upper material guide trough connected to the crushing chamber is provided above one side of the recovery chamber.

[0009] As a further solution of the present invention: the switch material blocking mechanism specifically includes: a strip groove opened on the bottom end surface of the lower material guide groove, a strip plate is movably connected to the top end of the strip groove, and a baffle matching the strip groove is fixedly connected to the top end surface of the strip plate, the top end of the baffle passes through the strip groove and contacts with the rotating plate, a plurality of evenly distributed spring columns are fixedly connected to the bottom end surface of the strip plate, and the bottom end of the spring column is fixedly connected to the bottom end surface of the strip groove.

[0010] As a further solution of the present invention: the material guiding mechanism specifically includes: a rectangular plate movably connected to the upper part of the rectangular groove, one end of the rectangular plate is rotatably connected to the inner wall of the rectangular groove, and a dual-axis motor is fixedly connected to the bottom end surface of the rectangular groove below the rectangular plate, the two output shafts of the dual-axis motor are fixedly connected to rotating arms, and a guide rod is fixedly connected between the two rotating arms.

[0011] As a further solution of the present invention: the lifting drive mechanism specifically includes: vertical grooves symmetrically opened on the inner walls on both sides of the recovery chamber, the vertical grooves are fixedly connected with vertical linear guide rails, and the vertical linear guide rails are movably connected with vertical linear motors outside, and the vertical linear motor is fixedly connected to the material receiving box.

[0012] As a further solution of the present invention: the first crushing assembly specifically includes: a support frame fixed on the top of the machine body, a crushing box fixedly connected to one side of the top surface of the support frame, and two parallel crushing rollers rotatably connected inside the crushing box, and two symmetrical driving motors fixedly connected to the other side of the top surface of the support frame, and the output shaft of the driving motor is transmission-connected to the corresponding crushing roller.

[0013] As a further solution of the present invention: a discharge port connected to the pulverizing chamber is provided at the bottom end of the other side of the machine body, and the height of the bottom end surface of the pulverizing chamber gradually decreases from the side far from the discharge port to the side close to the discharge port.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The coarse material recovery component provided in the present application can effectively recover the coarse material for re-crushing, thereby improving the crushing effect. In addition, the coarse material recovery component can effectively reduce the burden on the filter screen to prevent it from being damaged, thereby ensuring the filtering effect of the filter screen.

[0015] 2. The second crushing assembly provided in the present application can not only evenly distribute the material that has completed the first crushing, but also improve the crushing fineness of the material in the second crushing.

[0016] 3. The material guide mechanism of the present application has two working modes. In the first working mode, the material can be prevented from flowing back to the lower material guide chute. In the second working mode, the material can be smoothly introduced from the upper material guide chute into the crushing chamber, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a high-fineness pulverizer for the production of lithium manganese iron phosphate; Figure 2 This is a schematic diagram of the structure of the first pulverizing component in a high-fineness pulverizer for producing lithium manganese iron phosphate; Figure 3 This is an internal view of a grinding chamber and a recovery chamber in a high-fineness grinder for producing lithium manganese iron phosphate; Figure 4 This is a schematic diagram of the structure of a high-fineness pulverizer for lithium manganese iron phosphate production after the rotating plate is tilted; Figure 5 A combined view of a pulverizing roller and a pulverizing wheel in a high-fineness pulverizer for producing lithium manganese iron phosphate; Figure 6 This is an internal view of a receiving box in a high-fineness pulverizer for producing lithium manganese iron phosphate; Figure 7 This is a combined view of a double-shaft motor, a rotating arm and a guide rod in a high-fineness pulverizer for producing lithium manganese iron phosphate; Figure 8This is a combined view of a spring column, a strip plate and a baffle in a high-fineness crusher for producing lithium manganese iron phosphate.

[0018] In the figure: 1. body; 2. support frame; 3. crushing box; 4. crushing roller; 5. driving motor; 6. crushing chamber; 7. recovery chamber; 8. discharge port; 9. crushing roller; 10. rotating motor; 11. annular groove; 12. notch; 13. crushing wheel; 14. rotating plate; 15. filter screen; 16. lower guide chute; 17. strong magnet; 18. strip groove; 19. spring column; 20. strip plate; 21. baffle; 22. upper guide chute; 23. receiving box; 24. vertical groove; 25. vertical linear guide rail; 26. vertical linear motor; 27. rectangular groove; 28. dual-axis motor; 29. ​​rotating arm; 30. guide rod; 31. rectangular plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0020] As mentioned in the background technology of this application, it has been found through research that in order to increase the grinding fineness, existing grinders usually perform two grinding operations, but there will still be coarse materials after the second grinding. These coarse materials will not only increase the burden on the filter screen 15 and damage it, but also affect the filtering effect of the filter screen 15. However, if these coarse materials are taken out directly, the workload will increase, which has certain defects.

[0021] In order to solve the above-mentioned defects, the present application discloses a high-fineness crusher for lithium manganese iron phosphate production, which can effectively recycle coarse materials for re-crushing, thereby improving the crushing effect.

[0022] The following will describe in detail how the solution of the present application solves the above technical problems in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 8 In the embodiment of the present invention, a high-fineness pulverizer for lithium manganese iron phosphate production includes a body 1, a first pulverizing assembly is provided at the top of the body 1, and a pulverizing chamber 6 is provided on one side of the body 1; a second pulverizing assembly is provided above the pulverizing chamber 6, and a recovery chamber 7 is provided on one side of the pulverizing chamber 6, and a coarse material recovery assembly is provided between the lower part of the pulverizing chamber 6 and the recovery chamber 7. By providing the coarse material recovery assembly, the coarse material can be effectively recovered for re-pulverization, thereby improving the pulverization effect.

[0024] In this embodiment, the second crushing assembly specifically includes: a crushing roller 9 rotatably connected to the inside of the crushing chamber 6, a plurality of evenly distributed annular grooves 11 are provided on the outer side of the crushing roller 9, and the cross section of the annular groove 11 is trapezoidal, notches 12 are provided on the inner walls of both sides of the crushing chamber 6 at positions corresponding to the annular grooves 11, and a crushing wheel 13 matching the annular groove 11 is rotatably connected inside the notch 12, and the crushing wheel 13 extends into the annular groove 11, and a rotating motor 10 is fixedly connected to the position of the crushing roller 9 on one side of the body 1, and the output shaft of the rotating motor 10 is fixedly connected to the crushing roller 9. The second crushing assembly can not only evenly divert the material that has completed the first crushing, but also improve the crushing fineness of the material for the second crushing.

[0025] In this embodiment, the coarse material recovery assembly specifically includes: a rotating plate 14 located at the lower part of the crushing chamber 6, one end of the rotating plate 14 is rotatably connected to the inner wall of the crushing chamber 6, and a filter screen 15 is embedded on the top surface of the rotating plate 14, a lower material guide trough 16 is provided between the crushing chamber 6 and the recovery chamber 7, and a strong magnet 17 is embedded on the top of the inner wall of the lower material guide trough 16, the other end of the rotating plate 14 extends into the lower material guide trough 16 and is magnetically connected to the strong magnet 17, and a switch material blocking mechanism is provided below the lower material guide trough 16, a material receiving box 23 matching with the recovery chamber 7 is movably connected inside the recovery chamber 7, and a rectangular groove 27 is provided on the top surface of the material receiving box 23, a material guiding mechanism is provided inside the rectangular groove 27, a lifting drive mechanism is provided between the material receiving box 23 and the inner wall of the recovery chamber 7, and an upper material guide trough 22 connected with the crushing chamber 6 is provided above one side of the recovery chamber 7. The coarse material recovery assembly can effectively reduce the burden of the filter screen 15 to avoid damage to it, thereby ensuring the filtering effect of the filter screen 15.

[0026] In this embodiment, the switch material blocking mechanism specifically includes: a strip groove 18 opened on the bottom end surface of the lower material guide groove 16, a strip plate 20 is movably connected to the top of the strip groove 18, and a baffle 21 matching the strip groove 18 is fixedly connected to the top surface of the strip plate 20, the top of the baffle 21 passes through the strip groove 18 and contacts the rotating plate 14, a plurality of evenly distributed spring columns 19 are fixedly connected to the bottom end surface of the strip plate 20, and the bottom end of the spring column 19 is fixedly connected to the bottom end surface of the strip groove 18. The switch material blocking mechanism can smoothly guide the coarse material that has not flowed off the filter screen 15 to the recovery chamber 7.

[0027] In this embodiment, the material guide mechanism specifically includes: a rectangular plate 31 movably connected to the upper part of the rectangular groove 27, one end of the rectangular plate 31 is rotatably connected to the inner wall of the rectangular groove 27, and a double-axis motor 28 is fixedly connected to the bottom end surface of the rectangular groove 27 below the rectangular plate 31, and the two output shafts of the double-axis motor 28 are fixedly connected to the rotating arm 29, and a guide rod 30 is fixedly connected between the two rotating arms 29. The material guide mechanism of the present application has two working modes. In the first working mode, the material can be prevented from flowing back to the lower material guide groove 16, and in the second working mode, the material can be smoothly introduced from the upper material guide groove 22 into the crushing chamber 6, which is convenient for use.

[0028] In this embodiment, the lifting drive mechanism specifically includes: vertical slots 24 symmetrically arranged on the inner walls of both sides of the recovery chamber 7, the vertical slots 24 are fixedly connected with vertical linear guide rails 25 inside, and the vertical linear guide rails 25 are movably connected with vertical linear motors 26 outside, and the vertical linear motors 26 are fixedly connected to the receiving box 23. The lifting drive mechanism can effectively drive the receiving box 23 to lift.

[0029] In this embodiment, the first crushing assembly specifically includes: a support frame 2 fixed to the top of the machine body 1, a crushing box 3 is fixedly connected to one side of the top surface of the support frame 2, and two parallel crushing rollers 4 are rotatably connected inside the crushing box 3, and two symmetrical driving motors 5 are fixedly connected to the other side of the top surface of the support frame 2, and the output shafts of the driving motors 5 are drivingly connected to the corresponding crushing rollers 4. The first crushing assembly can perform rough processing on the material and complete the first crushing.

[0030] In this embodiment, a discharge port 8 connected to the crushing chamber 6 is provided at the bottom of the other side of the machine body 1, and the height of the bottom end surface of the crushing chamber 6 gradually decreases from the side away from the discharge port 8 to the side close to the discharge port 8. This arrangement can smoothly discharge the crushed material from the discharge port 8.

[0031] The working principle of the present invention is: when in use, first, pour the lithium manganese iron phosphate material to be crushed into the crushing box 3 of the first crushing component. During the process, the driving motor 5 runs to drive the crushing roller 4 to rotate, and the two crushing rollers 4 rotate synchronously to crush the material entering the crushing box 3 for the first time. The material that has completed the first crushing enters the crushing chamber 6 of the machine body 1 from the crushing box 3. Then, the second crushing component crushes the material entering the crushing chamber 6 for the second time. Specifically, the rotating motor 10 runs to drive the crushing roller 9 to rotate, and the material passes through the gap between the crushing roller 9 and the crushing wheel 13 and enters the bottom of the crushing chamber 6. During the process, the crushing roller 9 and the crushing wheel 13 rotate relative to each other to crush the passing material for the second time. Then, the material that has completed the second crushing falls on the filter screen 15 of the rotating plate 14. The filter screen 15 leaves the coarse material that does not meet the fineness standard, and the fine material that meets the fineness standard passes through the filter screen 15 into the bottom of the crushing chamber 6 and flows out from the discharge port 8. As time goes by, more and more coarse materials remain on the filter screen 15, making the burden on the filter screen 15 heavier and heavier. When the weight of the coarse materials on the filter screen 15 reaches the preset value, the rotating plate 14 separates from the strong magnet 17, and the rotating plate 14 tilts downward. During this process, the baffle 21 is pressed down into the strip groove 18 by the rotating plate 14, and the strip plate 20 follows the decline along the strip groove 18, so that the spring column 19 is compressed and accumulates elastic potential energy. Then, the coarse materials on the filter screen 15 enter the recovery chamber 7 along the lower material guide groove 16 from the inclined rotating plate 14, and the coarse materials entering the recovery chamber 7 fall into the rectangular groove 27 of the material receiving box 23. At this time, the material guide mechanism is in the first working mode, such as Figure 3 and Figure 4 As shown, the material entering the rectangular groove 27 moves along the rectangular plate 31 in the direction away from the lower material guide groove 16, thereby preventing the material from flowing back to the lower material guide groove 16. After the coarse material on the filter screen 15 flows into the recovery chamber 7, the spring column 19 releases elastic potential energy to lift the end of the rotating plate 14, so that the rotating plate 14 is magnetically connected to the strong magnet 17 again. The above operation is repeated after the weight of the coarse material on the filter screen 15 reaches the preset value again. Through this intermittent automatic recovery of coarse material, not only can the burden of the filter screen 15 be effectively reduced to avoid damage to it, and the filtering effect of the filter screen 15 be ensured, but also the fine material can be easily passed through the filter screen 15 when the filter screen 15 switches its shape.

[0032] The material guiding mechanism and the lifting drive mechanism in the recovery chamber 7 intermittently send the coarse material back to the upper part of the crushing chamber 6 according to the preset program. Specifically, the vertical linear motor 26 moves upward along the vertical linear guide rail 25. During the process, the material receiving box 23 rises synchronously with the coarse material. After the material receiving box 23 rises to a preset height, the material guiding mechanism switches to the second working mode, that is, the dual-axis motor 28 drives the rotating arm 29 to rotate, and the guide rod 30 rotates to lift one end of the rectangular plate 31, as shown in FIG. Figure 6As shown, at this time, the material in the receiving box 23 re-enters the upper part of the crushing chamber 6 along the rectangular plate 31 and the upper guide groove 22, and is crushed again by the second crushing component. This method can effectively recycle the coarse material for re-crushing, thereby improving the crushing effect.

[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0034] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-fineness pulverizer for the production of lithium manganese iron phosphate, characterized in that: It comprises a machine body (1), a first crushing assembly being provided at the top of the machine body (1), and a crushing chamber (6) being provided at one side of the interior of the machine body (1); A second pulverizing assembly is provided above the interior of the pulverizing chamber (6), a recovery chamber (7) is provided on one side of the pulverizing chamber (6), and a coarse material recovery assembly is provided between the interior of the pulverizing chamber (6) and the recovery chamber (7) at the bottom.

2. A high-fineness pulverizer for lithium manganese iron phosphate production according to claim 1, characterized in that: The second pulverizing assembly specifically comprises: a pulverizing roller (9) rotatably connected to the inside of a pulverizing chamber (6); a plurality of evenly distributed annular grooves (11) are provided on the outer side surface of the pulverizing roller (9); and the cross-section of the annular groove (11) is trapezoidal; notches (12) are provided on the inner walls of both sides of the pulverizing chamber (6) at positions corresponding to the annular grooves (11); and a pulverizing wheel (13) matching the annular groove (11) is rotatably connected inside the notch (12); the pulverizing wheel (13) extends into the annular groove (11); and a rotating motor (10) is fixedly connected to a side surface of the machine body (1) at a position corresponding to the pulverizing roller (9); and the output shaft of the rotating motor (10) is fixedly connected to the pulverizing roller (9).

3. A high-fineness pulverizer for lithium manganese iron phosphate production according to claim 1 or 2, characterized in that: The coarse material recovery component specifically comprises: a rotating plate (14) located at the lower part of the crushing chamber (6), one end of the rotating plate (14) being rotatably connected to the inner wall of the crushing chamber (6), and a filter screen (15) being embedded on the top surface of the rotating plate (14), a lower material guide trough (16) being provided between the crushing chamber (6) and the recovery chamber (7), and a strong magnet (17) being embedded on the top of the inner wall of the lower material guide trough (16), and the other end of the rotating plate (14) extending into the lower material guide trough (16) and being in contact with the strong magnet (17). The magnets (17) are magnetically connected together, and a switch material blocking mechanism is provided below the lower material guide groove (16); a material receiving box (23) matching with the recovery chamber (7) is movably connected inside the recovery chamber (7), and a rectangular groove (27) is provided on the top surface of the material receiving box (23); a material guiding mechanism is provided inside the rectangular groove (27); a lifting drive mechanism is provided between the material receiving box (23) and the inner wall of the recovery chamber (7); and an upper material guide groove (22) communicating with the pulverizing chamber (6) is provided above one side surface of the recovery chamber (7).

4. A high-fineness pulverizer for lithium manganese iron phosphate production according to claim 3, characterized in that: The switch material blocking mechanism specifically comprises: a strip groove (18) provided on the bottom end surface of the lower material guide groove (16); a strip plate (20) is movably connected to the top end of the strip groove (18); a baffle (21) matching the strip groove (18) is fixedly connected to the top end surface of the strip plate (20); the top end of the baffle (21) passes through the strip groove (18) and contacts the rotating plate (14); a plurality of evenly distributed spring columns (19) are fixedly connected to the bottom end surface of the strip plate (20); and the bottom ends of the spring columns (19) are fixedly connected to the bottom end surface of the strip groove (18).

5. A high-fineness pulverizer for lithium manganese iron phosphate production according to claim 4, characterized in that: The material guiding mechanism specifically comprises: a rectangular plate (31) movably connected to the upper part of the rectangular groove (27), one end of the rectangular plate (31) being rotatably connected to the inner wall of the rectangular groove (27), and a double-axis motor (28) being fixedly connected to the bottom end surface of the rectangular groove (27) below the rectangular plate (31), two output shafts of the double-axis motor (28) being fixedly connected to rotating arms (29), and a guide rod (30) being fixedly connected between the two rotating arms (29).

6. A high-fineness pulverizer for lithium manganese iron phosphate production according to claim 5, characterized in that: The lifting drive mechanism specifically comprises: vertical grooves (24) symmetrically arranged on the inner walls of both sides of the recovery chamber (7); a vertical linear guide rail (25) is fixedly connected inside the vertical groove (24); and a vertical linear motor (26) is movably connected outside the vertical linear guide rail (25); and the vertical linear motor (26) is fixedly connected to the receiving box (23).

7. A high-fineness pulverizer for lithium manganese iron phosphate production according to claim 1, characterized in that: The first crushing assembly specifically comprises: a support frame (2) fixed to the top of the machine body (1); a crushing box (3) is fixedly connected to one side of the top surface of the support frame (2); two parallel crushing rollers (4) are rotatably connected inside the crushing box (3); two symmetrical drive motors (5) are fixedly connected to the other side of the top surface of the support frame (2); and the output shafts of the drive motors (5) are transmission-connected to the corresponding crushing rollers (4).

8. A high-fineness pulverizer for lithium manganese iron phosphate production according to claim 1, characterized in that: A discharge port (8) communicating with the pulverizing chamber (6) is provided at the bottom end of the other side of the machine body (1), and the height of the bottom end surface of the pulverizing chamber (6) gradually decreases from the side away from the discharge port (8) to the side close to the discharge port (8).

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