A cerium oxide airflow pulverization device and production process

Abstract

The present invention relates to the field of crushing technology, and discloses a cerium oxide airflow crushing device and a production process, comprising a base, wherein the base is provided with four equiangularly arranged support legs, the support legs are connected to a first tank body, the first tank body is provided with a jet mechanism for ejecting high-pressure airflow and driving materials to collide and crush with each other, and the first tank body is provided with a feed pipe located above the jet mechanism; the inner wall of the first tank body is provided with four equiangularly arranged cooling components, the upper port of the first tank body is connected to the second tank body through a flange, the second tank body is provided with a grading mechanism and a discharge pipe corresponding to the grading mechanism, and the upper port of the second tank body is provided with a top cover; the device achieves efficient production through multi-dimensional innovation, the double-layer serpentine cooling channel quickly dissipates heat, avoids high-temperature agglomeration of materials to ensure stable physical and chemical properties; four groups of counter-jet nozzles form a vortex field, so that the material particle size refinement rate exceeds 90% and energy consumption is reduced by 35%.

Description

Technical Field

[0001] The present invention relates to the field of pulverization technology, in particular to a cerium oxide airflow pulverization device and a production process. Background Art

[0002] As an important rare earth functional material, cerium oxide's crystal structure and chemical purity directly determine its performance in high-end applications. For example, cubic cerium oxide, due to its excellent oxygen storage and release capacity, is a core component of fuel cell catalysts and automotive exhaust purifiers. Electronic-grade cerium oxide (purity >99.99%) is a key raw material for the preparation of high-precision optical coatings and semiconductor polishing fluids. Airflow milling technology has become the mainstream method for cerium oxide fine processing because it can achieve nanoscale particle size control and avoid mechanical contamination. However, significant technical bottlenecks still exist in maintaining crystal form and controlling purity.

[0003] Conventional airflow milling devices primarily control the temperature of the milling chamber through a water-cooled interlayer. This structure typically includes an external circulating water pipe in contact with the chamber wall, using the principle of heat conduction to reduce local temperature rise. However, this method only controls the surface temperature of the chamber and cannot solve the problem of heat accumulation in the center of the milling chamber. The transient heat generated by high-speed airflow friction and particle collisions can cause local temperatures to exceed 300°C, causing cerium oxide to undergo a crystal transformation (for example, from cubic to orthorhombic phase), and the crystal transformation rate increases with processing time.

[0004] Therefore, how to achieve precise control of the temperature field during the pulverization process has become a technical problem that needs to be urgently solved in the cerium oxide airflow pulverization device. Summary of the Invention

[0005] The purpose of the present invention is to provide a cerium oxide airflow pulverization device and a production process to solve the problems raised in the above background technology.

[0006] The technical solution adopted by the present invention is as follows: A cerium oxide airflow pulverizing device comprises a base, the base is provided with four equiangularly arranged support legs, the support legs are provided with a first tank body, the first tank body is provided with a jet mechanism for ejecting high-pressure airflow and driving materials to collide and crush with each other, the first tank body is provided with a feed pipe located above the jet mechanism; the inner wall of the first tank body is provided with cooling components arranged at equal angles, and there is an installation gap between adjacent cooling components, the cooling component includes an arc-shaped cooling plate, the top surface of the cooling plate is provided with two layers of refrigerant flow channels arranged at equal angles, the two layers of refrigerant flow channel ports are connected by a U-shaped tube, and the U-shaped tube located at the edge is connected with a liquid inlet pipe and a liquid outlet pipe extending to the outside of the first tank body; the upper port of the first tank body is provided with a second tank body, the second tank body is provided with a grading mechanism and a discharge pipe corresponding to the grading mechanism, and the upper port of the second tank body is provided with a top cover.

[0007] The first tank body is a barrel-shaped structure, and the second tank body is a tubular structure.

[0008] The base is a rectangular frame, the top surface of the base has a vertical through-hole, and the side surface has a lateral through-hole.

[0009] The cooling plate is connected to three equiangularly arranged feet, and a third nozzle for blowing off the wall materials in the first tank and the second tank is installed on the feet; the third nozzle comprises a T-shaped tubular outer tube body arranged on the feet, an air nozzle with a funnel-shaped air guide port in the center is fixed by screws to the upper end of the outer tube body, and two symmetrically arranged support blocks are fixed by screws to the outer tube body. The gap between the support blocks is fixedly connected to an inner tube body, and a conical cap-shaped sliding core adapted to the air guide port is slidably connected to the sliding groove on the upper end surface of the inner tube body; a guide sleeve is fixed in the middle of the inner tube body, and a guide column connected to the sliding core at the upper end is slidably connected on the guide sleeve; a first air inlet hole and a second air inlet hole are opened in the air injection cavity at the lower end of the inner tube body, an air push pipe is installed on the first air inlet hole, and a pressure air pipe is installed on the second air inlet hole; the side wall of the guide column is connected to an air sealing hood slidably adapted to the air injection cavity, and the air injection cavity has a step groove for limiting the upward movement of the air sealing hood, and the lower port of the inner tube body is fixed with a guide seat slidably connected to the guide column by screws, and a tail cap is connected to the guide seat.

[0010] The inner bottom surface of the first tank body is connected to a support rod arranged at an equal angle, and the support rod is connected to a sleeve located in the center of the first tank body, and the sleeve is equipped with a third nozzle; the side wall of the sleeve is equipped with a ball bearing, and the outer ring of the ball bearing is connected to two symmetrically arranged bases, and two groups of first connecting rods and second connecting rods are rotatably connected to the base, and the free section of each group of the first connecting rod and the second connecting rod is rotatably connected to an arc-shaped air guide cover, and the two air guide covers form an inverted V-shaped air flow channel when buckled; the side wall of the second connecting rod is connected to a convex rod, and a guide rail is installed in the middle of the base, and a slider is slidably connected to the guide rail, and a driving rod with two symmetrically arranged notched grooves is connected to the slider, and the notched groove is slidably adapted to the convex rod, and the driving rod is connected to a telescopic rod connected to the base.

[0011] The beneficial effects of this invention include: This device achieves efficient production through multi-dimensional innovation. A double-layer serpentine cooling channel rapidly dissipates heat, preventing high-temperature material agglomeration and ensuring stable physical and chemical properties. Four sets of counter-flow nozzles create a vortex field, resulting in a particle size refinement rate exceeding 90% and a 35% reduction in energy consumption. Double-layer baffles, combined with a precise docking structure, achieve a D50 particle size fluctuation of ≤±2μm, improving classification efficiency by 40%. The combination of a shaking mechanism and nozzle purge reduces agglomeration by 95% and achieves seamless cleaning. The spiral air curtain and sealing structure reduce wear by 60%, extending component life by two times, and controlling air pressure fluctuation to ≤5%. The device combines efficient pulverization, precise classification, stable temperature control, and self-cleaning to prevent agglomeration, achieving finished product particle size uniformity that meets ISO Class 1 standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of this application.

[0013] Figure 2 This is a schematic diagram of the main cross-sectional structure of this application.

[0014] Figure 3 A schematic diagram of the three-dimensional structure of the cooling component.

[0015] Figure 4 This is a schematic diagram of the main cross-sectional structure of the cooling component.

[0016] Figure 5 A schematic diagram of the cross-sectional structure of the cooling component from above.

[0017] Figure 6 Schematic diagram of the three-dimensional structure of the jet mechanism.

[0018] Figure 7 It is a schematic diagram of the side cross-sectional structure of the first baffle.

[0019] Figure 8 Schematic diagram of the three-dimensional structure of the end cover.

[0020] Figure 9 Schematic diagram of the three-dimensional structure of the pressure ring.

[0021] Figure 10 This is a schematic diagram of the top-view cross-sectional structure of the seventh gas pipeline.

[0022] Figure 11 It is a schematic diagram of the main cross-sectional structure of the valve body.

[0023] Figure 12 It is a schematic diagram of the side cross-sectional structure of the valve body.

[0024] Figure 13 It is a schematic diagram of the three-dimensional structure of the valve body.

[0025] Figure 14 It is a schematic diagram of the main cross-sectional structure of the shell.

[0026] Figure 15 It is a schematic diagram of the main cross-sectional structure of the shaking mechanism.

[0027] Figure 16 Schematic diagram of the three-dimensional structure of the carrier board.

[0028] Figure 17 It is a schematic diagram of the main cross-sectional structure of the ball head seat.

[0029] Figure 18 This is a schematic diagram of the main structure of the first compression spring.

[0030] Figure 19 This is a schematic diagram of the main cross-sectional structure of the bellows.

[0031] Figure 20 It is a schematic diagram of the main cross-sectional structure of the rubber tube.

[0032] Figure 21 It is a schematic diagram of the main structure of the cooling plate.

[0033] Figure 22 It is a schematic diagram of the cross-sectional structure of the cooling plate from top view.

[0034] Figure 23 Schematic diagram of the three-dimensional structure of the third nozzle.

[0035] Figure 24 This is a schematic diagram of the main cross-sectional structure of the third nozzle.

[0036] Figure 25 It is a schematic diagram of the side cross-sectional structure of the third nozzle.

[0037] Figure 26 It is a schematic diagram of the main cross-sectional structure of the trachea.

[0038] Figure 27 It is a schematic diagram of the main cross-sectional structure of the support rod.

[0039] Figure 28 It is a schematic diagram of the main cross-sectional structure of the air deflector.

[0040] Figure 29 A schematic diagram of the three-dimensional structure of the air deflector.

[0041] Figure 30 Flow chart of the production process.

[0042] In the figure: 1. base; 2. support leg; 3. first tank body; 4. jet mechanism; 5. feed pipe; 6. cooling assembly; 7. cooling plate; 8. refrigerant flow channel; 9. U-shaped pipe; 10. arc flow channel; 11. liquid inlet pipe; 12. liquid outlet pipe; 13. second tank body; 14. grading mechanism; 15. discharge pipe; 16. top cover; 17. first air pipe; 18. first nozzle; 19. second air pipe; 20. third air pipe; 21. fourth air pipe; 22. fifth air pipe; 23. sixth air pipe; 24. pressure gauge; 25. flow meter; 26. control valve; 27. first branch pipe; 28. second branch pipe; 29. ​​drive motor; 30. sealed bearing; 31. bushing; 3 2. Rotating plate; 33. First stop bar; 34. Circular ring; 35. Flange; 36. Second stop bar; 37. Manhole; 38. End cover; 39. Inspection port; 40. Pressing ring; 41. Pressing rod; 42. Screw; 43. Rocker; 44. Pressing cover; 45. Buckle; 46. Seventh air pipe; 47. Second nozzle; 48. Pulse mechanism; 49. Valve body; 50. Valve cavity; 51. Piston cavity; 52. Piston cylinder; 53. Pressing block; 54. Return spring; 55. First bearing seat; 56. First rotating shaft; 57. First motor; 58. Cam; 59. Shaft; 60. Lever; 61. Contact; 62. Housing; 63. Main air cavity; 64. Sliding cavity; 65. Air sealing cap; 66. Compression spring; 67. Bypass air chamber; 68. Third branch pipe; 69. Cover plate; 70. Shaking mechanism; 71. Second rotating shaft; 72. Second motor; 73. Eccentric seat; 74. Eccentric shaft; 75. Spherical head; 76. Spherical head seat; 77. Spherical groove; 78. Conical groove; 79. Carrier plate; 80. First compression spring; 81. Spring seat; 82. Bellows; 83. First flange ring; 84. Second flange ring; 85. First retaining ring; 86. First fixing ring; 87. Rubber tube; 88. Second retaining ring; 89. Second fixing ring; 90. Cooling plate; 91. Cooling channel; 92. Hose; 93. Liquid inlet; 94. Liquid outlet; 95. Foot seat; 96. Third nozzle; 97. Outer tube; 98. Air nozzle ;99. Air guide port;100. Support block;101. Inner tube body;102. Slide groove;103. Slide core;104. Guide sleeve;105. Guide column;106. Air injection cavity;107. First air inlet;108. Second air inlet;109. Air push pipe;110. Air pressure pipe;111. Air sealing cover;112. Step groove;113. Guide seat;114. Tail cap;115. Support rod;116. Sleeve;117. Ball bearing;118. Base;119. First connecting rod;120. Second connecting rod;121. Oblique rod;122. Air guide cover;123. Protruding rod;124. Guide rail;125. Slider;126. Drive rod;127. Notch groove;128. Telescopic rod. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth" and "tenth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] like Figures 1 to 5As shown in Example 1, a cerium oxide airflow pulverizing device and production process include a base 1, on which are fixed legs 2 by bolts, the number of the legs 2 is 4, and the 4 legs 2 are arranged at equal angles, the legs 2 are connected to a first tank body 3, and a jet mechanism 4 is installed in the first tank body 3, and the jet mechanism 4 is used to eject a high-pressure airflow to drive the materials to collide with each other, so that large-particle-size materials are crushed into small-particle-size materials, and a feed pipe 5 is installed on the first tank body 3, and the feed pipe 5 is located above the jet mechanism 4; a cooling assembly 6 is installed on the inner wall of the first tank body 3, the number of the cooling assemblies 6 is 4, and the 4 cooling assemblies 6 are arranged at equal angles, and there is an installation gap between adjacent cooling assemblies 6, and the cooling assembly 6 includes a cooling plate 7, The cooling plate 7 is in the shape of an arc, and the top surface of the cooling plate 7 is provided with refrigerant flow channels 8 arranged at equal angles. The refrigerant flow channels 8 are arranged in two layers, and the ports of the two layers of refrigerant flow channels 8 are connected by a U-shaped tube 9, and the two layers of refrigerant flow channels 8 are connected by an arc flow channel 10; so that the cooling plate 7 forms an inner and outer double-layer serpentine cooling mode, and the U-shaped tube 9 located at the edge is connected with a liquid inlet pipe 11 and a liquid outlet pipe 12, and the liquid inlet pipe 11 and the liquid outlet pipe 12 extend to the outside of the first tank body 3; the upper port of the first tank body 3 is connected to the second tank body 13 through a flange, and a grading mechanism 14 is installed on the second tank body 13, and a discharge pipe 15 is installed on the second tank body 13, and the discharge pipe 15 corresponds to the grading mechanism 14; the upper port of the second tank body 13 is installed with a top cover 16. Motion process: Base 1 supports first tank 3 via four equiangularly arranged legs 2. Material enters first tank 3 through feed pipe 5. Jet mechanism 4 sprays high-pressure air, driving the material into collision and crushing. Cooling assembly 6 circulates refrigerant through refrigerant channel 8 to cool the inner wall of first tank 3. The crushed material enters second tank 13. Classifying mechanism 14 classifies the material, and qualified material is discharged from discharge pipe 15. Top cover 16 seals the upper end of second tank 13. Beneficial effects: The structure is stable, material crushing is achieved through high-pressure airflow, cooling assembly 6 effectively controls the temperature inside the tank, preventing material property changes caused by high temperature, and classifying mechanism 14 ensures that the discharge particle size meets the requirements.

[0048] like Figure 2 As shown, as an optimization of the first embodiment, the first tank body 3 is a barrel-shaped structure, and the second tank body 13 is a tubular structure.

[0049] like Figure 2 As shown, as an optimization of the first embodiment, the base 1 is in the shape of a rectangular frame, the top surface of the base 1 has a vertical through-hole, and the side surface of the base 1 has a lateral through-hole.

[0050] like Figure 6As shown, as an optimization of the first embodiment, the jet mechanism 4 includes a first air pipe 17, the number of the first air pipe 17 is 4, the 4 first air pipes 17 are arranged horizontally, and the first air pipe 17 is located at the installation gap of the adjacent cooling assembly 6; the first air pipe 17 port located in the first tank body 3 is installed with a first nozzle 18, the 4 first nozzles 18 are opposite to each other, and the high-speed airflow of the first nozzle 18 carries the material to collide; the first air pipe 17 port located outside the first tank body 3 is installed with a second air pipe 19, and the second air pipe 1 9 is shaped like a curved pipe; the lower end of the second air supply pipe 19 is connected to the third air supply pipe 20, and the lower end of the third air supply pipe 20 is connected to the fourth air supply pipe 21. The fourth air supply pipe 21 is shaped like a semicircular pipe. The two fourth air supply pipes 21 are connected by flanges to form a circular pipeline. A fifth air supply pipe 22 is connected to one of the fourth air supply pipes 21. Preferably, the fifth air supply pipe 22 is connected to a sixth air supply pipe 23 via a flange. The side walls of the sixth air supply pipe 23 are mounted with a pressure gauge 24 and a flow meter 25, and the free end of the sixth air supply pipe 23 is mounted with a control valve 26. The airflow process: High-pressure gas enters the fourth air supply pipe 21 of the circular pipeline through the sixth air supply pipe 23 and the fifth air supply pipe 22, passes through the third air supply pipe 20 and the curved second air supply pipe 19, reaches the first air supply pipe 17, and is ejected from the first nozzle 18. The four first nozzles 18 are positioned opposite each other, and the high-speed airflow carries the material, causing it to collide and pulverize. Beneficial effects: Reasonable gas pipeline layout enables high-pressure airflow to be ejected evenly, improves material collision efficiency, and achieves efficient crushing; the pressure gauge 24 and flow meter 25 facilitate real-time monitoring and control of airflow parameters, and the control valve 26 can flexibly adjust the airflow to meet different crushing requirements.

[0051] like Figure 2 and Figure 7As shown, as an optimization of Example 1, the side wall of the second tank body 13 is connected to the first branch pipe 27; the side wall of the second tank body 13 is connected to the second branch pipe 28 by bolts, the inner wall of the second branch pipe 28 is used to install the discharge pipe 15, and the port of the discharge pipe 15 located in the second tank body 13 has a concave groove; the grading mechanism 14 includes a drive motor 29, the drive motor 29 is connected to the first branch pipe 27 through a flange, the shaft side of the drive motor 29 is connected to a sealed bearing 30, and the sealed bearing 30 is rotatably connected to the first branch pipe 27; the shaft end of the drive motor 29 is connected to a shaft sleeve 31, the shaft sleeve 31 is located in the second tank body 13, the free end of the shaft sleeve 31 is connected to a rotating plate 32, and the end face of the rotating plate 32 is connected to an equiangular The first baffle 33 is arranged at an angle, and the shape of the first baffle 33 is arc-shaped. The gap between adjacent first baffles 33 allows small-sized materials to enter; the free end of the first baffle 33 is connected to a circular ring 34, and the inner hole of the circular ring 34 allows the classified materials to pass through. One side of the circular ring 34 has a flange 35, and the flange 35 is adapted to the concave groove; preferably, the end face of the rotating plate 32 is connected to the second baffle 36 arranged at an equal angle, and the shape of the second baffle 36 is arc-shaped. The gap between adjacent second baffles 36 is smaller than the gap between adjacent first baffles 33. The second baffle 36 can further optimize the separation of a small amount of large-sized materials mixed in the small-sized materials, so that these large-sized materials are broken between the first baffle 33 and the second baffle 36. Motion process: The drive motor 29 is connected through the first branch pipe 27, driving the shaft sleeve 31 and the rotating plate 32 to rotate. The first and second baffles 33 and 36 on the rotating plate 32 rotate with the rotating plate 32. Small-sized particles enter through the gaps between adjacent baffles, and large-sized particles are broken up between the baffles. The classified materials pass through the inner hole of the ring 34, and the flange 35 is adapted to the concave groove of the discharge pipe 15 to achieve docking discharge. Beneficial effect: The double-layer baffle design can more accurately separate materials of different particle sizes. Large particles are further broken up between the baffles, improving classification efficiency and discharge particle size uniformity. The flange 35 is adapted to the concave groove to ensure smooth discharge.

[0052] like Figure 8 and Figure 9As shown, as an optimization of the first embodiment, the side wall of the first tank body 3 is connected to a manhole 37, which is located at the installation gap of the adjacent cooling assembly 6. An end cover 38 is connected to the manhole 37 by bolts. Preferably, an inspection port 39 is opened in the center of the end cover 38, a pressure ring 40 is connected to the end cover 38, and a pressure rod 41 is hinged on the end cover 38. The shape of the pressure rod 41 is V-shaped, and a screw 42 is threadedly connected to the middle section of the pressure rod 41. One end of the screw 42 is connected to a rocker 43, and the other end of the screw 42 is connected to a pressure cover 44. The pressure cover 44 is used to press the pressure ring 40; a buckle 45 is hingedly installed on the end cover 38, and the buckle 45 is used to press the free end of the pressure rod 41. Movement process: when maintenance is required, the rocker 43 is rotated to drive the pressure cover 44 through the screw 42 to loosen the pressure ring 40, open the pressure rod 41 and the buckle 45, and remove the end cover 38 to perform maintenance on the manhole 37. Beneficial effect: The manhole 37 can be opened quickly and conveniently for internal inspection and maintenance of the equipment. The pressure rod 41, screw rod 42 and other structures ensure that the end cover 38 is sealed and fastened to prevent material leakage.

[0053] like Figures 10 to 13As shown, as an optimization of the first embodiment, considering that the high-speed airflow of the first nozzle 18 will impact the inner wall of the first tank body 3, the side wall of the first tank body 3 is connected with a seventh air pipe 46, and the seventh air pipe 46 is arranged tangentially to the first tank body 3. The number of the seventh air pipes 46 is 2, and the positions of the two seventh air pipes 46 are staggered. The port of the seventh air pipe 46 located in the first tank body 3 is connected with a second nozzle 47, and the two second nozzles 47 form a spiral air curtain flowing along the inner wall of the first tank body 3, reducing the impact airflow of the first nozzle 18; preferably, the seventh air pipe 46 located outside the first tank body 3 is connected to a pulse mechanism 48, and the pulse mechanism 48 includes a valve body 49, the valve body 49 has a valve cavity 50 connected to the seventh air pipe 46, and the valve body 49 has a piston cavity 51 connected to the valve cavity 50, and the number of the piston cavity 51 is 2, and the piston cavity 51 is slidingly connected There is a piston cylinder 52, the tail of the piston cylinder 52 is located outside the valve body 49, the tail of the piston cylinder 52 is connected to a pressure block 53, the piston cylinder 52 is sleeved with a return spring 54, and the return spring 54 is located between the pressure block 53 and the valve body 49 in an elastic connection manner; a first bearing seat 55 is installed on the valve body 49, and a first rotating shaft 56 is rotatably connected to the first bearing seat 55, and the first rotating shaft 56 is driven by a first motor 57; a cam 58 is connected to the first rotating shaft 56, and there are two cams 58, and the protruding directions of the two cams 58 are opposite; a shaft rod 59 is rotatably connected to the first bearing seat 55, and there are two shaft rods 59, which are symmetrically arranged, and a lever 60 is installed on the shaft rod 59. The shape of the lever 60 is arc-shaped, and contacts 61 are connected to both ends of the lever 60, one contact 61 is slidably adapted to the cam 58, and the other contact 61 is slidably adapted to the pressure block 53. Movement process: First motor 57 drives first rotating shaft 56 to rotate, which in turn rotates cam 58. Cam 58 projects in opposite directions, pushing contacts 61 at both ends of lever 60 to alternate motion, causing piston cylinder 52 to slide within piston chamber 51. This compresses and resets return spring 54, causing pulse mechanism 48 to intermittently supply air to seventh air pipe 46. Second nozzle 47 sprays a spiral air curtain, reducing the impact of the first nozzle 18's impulsive airflow on the inner wall of the tank. Beneficial Effect: The pulsed air curtain effectively reduces the direct impact of high-speed airflow on the inner wall of the tank, reducing wear and extending the service life of the equipment. The spiral air curtain ensures more uniform airflow distribution and better protection.

[0054] like Figure 14As shown, as an optimization of Example 1, the seventh gas supply pipe 46 is mounted with a housing 62. The housing 62 has a main gas cavity 63 connected to the seventh gas supply pipe 46. A sliding cavity 64 is located in the middle of the main gas cavity 63. A sealing cap 65 is slidably connected to the sliding cavity 64. The sealing cap 65 is used to seal the main gas cavity 63. A compression spring 66 is connected to the sealing cap 65 and elastically located within the sliding cavity 64. The housing 62 has two bypass gas cavities 67 connected to the main gas cavity 63. The two ports of the two bypass gas cavities 67 are located on either side of the sliding cavity 64. The sealing cap 65 can adaptively adjust the air pressure within the seventh gas supply pipe 46. Movement process: When the air pressure within the seventh gas supply pipe 46 changes, the sealing cap 65 slides within the sliding cavity 64. Under the elastic action of the compression spring 66, the sealing cap 65 adaptively adjusts to control the ventilation of the main gas cavity 63 and the bypass gas cavity 67, thereby achieving air pressure stability. Beneficial effects: It can automatically adjust according to the changes in air pressure in the pipe, maintain stable air pressure, ensure the stable formation of air curtain, improve the protection effect of the tank body, and reduce the adverse effects caused by air pressure fluctuations.

[0055] like Figures 15 to 17As shown, as an optimization of Example 1, considering that large-particle materials fall to the bottom of the first tank body 3 and will agglomerate if they remain in a static state for a long time, a third branch pipe 68 is provided at the bottom of the first tank body 3. Preferably, the third branch pipe 68 is located at the center of the first tank body 3. A cover plate 69 is connected to the third branch pipe 68 through a flange, and a shaking mechanism 70 is installed on the cover plate 69. The shaking mechanism 70 is used to shake the material in the first tank body 3 to prevent the material from agglomerating. The rocking mechanism 70 includes a second rotating shaft 71 rotatably connected to the cover plate 69, and the second rotating shaft 71 is driven by the second motor 72; an eccentric seat 73 is hinged on the second rotating shaft 71 above the cover plate 69 by a pin shaft, and an eccentric shaft 74 is fixed on the eccentric seat 73, and the upper end of the eccentric shaft 74 is connected to a spherical head 75; the spherical head 75 is connected to a ball head seat 76, and the cross-section of the ball head seat 76 is T-shaped. The top surface of the ball head seat 76 has a spherical groove 77, and the spherical groove 77 is used to place the spherical head 75. The bottom surface of the ball head seat 76 has a conical groove 78, and the conical groove 78 ensures that the eccentric shaft 74 can deflect at an angle; the top surface of the ball head seat 76 is connected to a carrier plate 79 by bolts, and the carrier plate 79 is used to carry materials; the projected area of ​​the carrier plate 79 is larger than the projected area of ​​the third branch pipe 68; the bottom surface of the carrier plate 79 is connected to a first compression spring 80, and the number of the first compression springs 80 is at least 4, 4 The first compression springs 80 are arranged at equal angles; the lower end of the first compression spring 80 is connected to a spring seat 81, which is fixed to the side wall of the third branch pipe 68; the second motor 72 drives the second rotating shaft 71 to rotate, and the eccentric shaft 74 then drives the carrier plate 79 to shake. The elasticity of the first compression spring 80 allows the carrier plate 79 to reset and vibrate, preventing the material from becoming static and agglomerated. Movement process: The second motor 72 drives the second rotating shaft 71 to rotate, and the eccentric seat 73 and the eccentric shaft 74 rotate accordingly, driving the spherical head 75 to move within the spherical groove 77 of the ball head seat 76, causing the carrier plate 79 to shake. The elastic action of the first compression spring 80 allows the carrier plate 79 to reset and vibrate, preventing the material from clumping at the bottom of the first tank body 3. Beneficial effect: Effectively shaking and vibrating the carrier plate 79 keeps the bottom material in motion, avoiding long-term static agglomeration, and ensuring the material crushing effect and normal operation of the equipment.

[0056] like Figure 18 and Figure 19As shown, as an optimization of Example 1, considering the gap between the third branch pipe 68 and the carrier plate 79, which easily allows material to enter and affect the shaking of the material, the side wall of the third branch pipe 68 has a first flange ring 83, and the bottom surface of the carrier plate 79 has a second flange ring 84. A bellows 82 is connected between the first flange ring 83 and the second flange ring 84. The bellows 82 is made of rubber and can cover the eccentric shaft 74 and the second rotating shaft 71. Movement process: When the carrier plate 79 shakes, the bellows 82 expands and contracts with the relative movement of the first flange ring 83 and the second flange ring 84, covering the eccentric shaft 74 and the second rotating shaft 71, and preventing material from entering the gap between the third branch pipe 68 and the carrier plate 79. Beneficial effect: The bellows 82 seals the gap, preventing material from entering and affecting the movement of the shaking mechanism 70, protecting the internal structure, and ensuring a stable and reliable shaking function.

[0057] like Figure 20 As shown, as an optimization of Example 1, considering that the above-mentioned bellows 82 can prevent the material from entering the third branch pipe 68, but the first compression spring 80 is still in the material and the shaking performance is limited, the side wall of the carrier plate 79 has a first retaining ring 85, and the first retaining ring 85 is connected to a rubber tube 87 through a first fixing ring 86, and the shape of the rubber tube 87 is conical; the bottom of the first tank body 3 has a second retaining ring 88, and the second retaining ring 88 is located inside the first tank body 3, and the diameter of the second retaining ring 88 is larger than the diameter of the first retaining ring 85; the second retaining ring 88 is fixed to the rubber tube 87 through the second fixing ring 89, and the rubber tube 87 and the carrier plate 79 form a closed air chamber, and the rubber tube 87 can cover the first compression spring 80, the eccentric shaft 74 and the second rotating shaft 71, and the protection performance is better. Movement: When carrier plate 79 oscillates, rubber tube 87 expands and contracts with the relative positions of first retaining ring 85 and second retaining ring 88, forming a closed air chamber with carrier plate 79 that encloses first compression spring 80, eccentric shaft 74, and second rotating shaft 71. Beneficial Effect: Rubber tube 87 provides a more effective seal, fully protecting internal components, preventing material contact that could affect oscillation performance and extending the mechanism's service life.

[0058] like Figure 21 and Figure 22 As shown, as an optimization of Example 1, a cooling plate 90 is connected to the top surface of the carrier plate 79. The interior of the cooling plate 90 has a flat spiral cooling channel 91. Both ends of the cooling channel 91 are connected to hoses 92. One hose 92 is connected to a liquid inlet 93, and the other hose 92 is connected to a liquid outlet 94. Both liquid inlet 93 and liquid outlet 94 are located on the first tank body 3. Operation: The cooling channel 91 in the cooling plate 90 circulates refrigerant through the hose 92, cooling the carrier plate 79 and surrounding materials, further cooling the center of material impact. Beneficial Effect: The cooling plate 90 further controls the temperature within the tank, preventing overheating of the materials.

[0059] like Figure 23As shown, as an optimization of Example 1, the cooling plate 90 is connected to three feet 95 arranged at equal angles. A third nozzle 96 is mounted on the feet 95 for clearing material adhering to the walls of the first and second tank bodies 3, 13. The third nozzle 96 on the feet 95 ejects air to clear material adhering to the walls of the first and second tank bodies 3, 13. This third nozzle 96 clears material adhering to the walls, preventing it from adhering and affecting the crushing and classification effects, thereby improving equipment operating efficiency.

[0060] like Figures 24 to 26As shown, as an optimization of the first embodiment, the first nozzle 18 can be replaced with a third nozzle 96; the third nozzle 96 includes an outer tube body 97 provided on the foot 95, the outer tube body 97 is in the shape of a T-tube, an air nozzle 98 is fixed to the upper end of the outer tube body 97 by screws, and the center of the air nozzle 98 has a funnel-shaped air guide 99; a support block 100 is fixed to the outer tube body 97 by screws; the number of the support blocks 100 is 2, and the 2 support blocks 100 are symmetrically arranged. The gap between the support blocks 100 is fixedly connected with the inner tube body 101, and the upper end surface of the inner tube body 101 is provided with a slide groove 102, and the slide groove 102 is slidably connected with a slide core 103 adapted to the air guide port 99, and the shape of the slide core 103 is a cone cap; a guide sleeve 104 is fixed in the middle of the inner tube body 101, and a guide column 105 is slidably connected to the guide sleeve 104, and the upper end of the guide column 105 is connected to the slide core 103; the lower end of the inner tube body 101 has an air injection cavity 106, and the air injection cavity 106 is located at the lower side of the guide sleeve 104, and the air injection cavity 106 is provided with a first air inlet hole 107 and a second air inlet hole 108, and the first air inlet hole 107 is installed with an air push pipe 109, and the second air inlet hole 108 is installed with a compressed air pipe 110; the side wall of the guide column 105 is connected with an air sealing cover 111, and the air sealing cover 111 is connected to the injection The air cavity 106 is slidably adapted, and the air injection cavity 106 has a step groove 112 for limiting the upward movement of the air sealing cover 111, and the step groove 112 is located above the first air inlet 107; the lower end of the inner tube body 101 is fixed with a guide seat 113 by screws, and the guide seat 113 is slidably connected to the guide column 105, and the guide seat 113 is connected to the tail cap 114; adjustment process: by injecting air into the second air inlet 108, the air sealing cover 111 moves upward, and the guide column 105 makes the sliding core 103 face the air nozzle 98, and then the gap between the sliding core 103 and the air guide port 99 becomes smaller, which changes the air flow rate; by injecting air into the first air inlet 107, the air sealing cover 111 moves downward, and the guide column 105 makes the sliding core 103 move away from the air nozzle 98, and then the gap between the sliding core 103 and the air guide port 99 becomes larger, which changes the air flow rate. Movement process: When air is injected into the first air inlet 107, the air sealing cover 111 moves downward, and the guide column 105 drives the sliding core 103 away from the air nozzle 98, increasing the gap between the sliding core 103 and the air guide port 99 and increasing the air flow rate. When air is injected into the second air inlet 108, the air sealing cover 111 moves upward, and the sliding core 103 approaches the air nozzle 98, decreasing the gap and reducing the air flow rate, thus achieving air flow regulation. Beneficial effect: The air flow rate can be flexibly adjusted according to the pulverization requirements, adapting to different materials and pulverization particle size requirements, improving the controllability of the pulverization effect and the applicability of the equipment.

[0061] like Figures 27 to 29As shown, as an optimization of Example 1, the inner bottom surface of the first tank body 3 is connected with support rods 115 arranged at equal angles, and the support rods 115 are connected with sleeves 116, which are located at the center of the first tank body 3, and the sleeves 116 are installed with a third nozzle 96, and the third nozzle 96 located in the center can make the falling large-particle materials form a fluidized bed; the third nozzle 96 can be replaced by the first nozzle 18, and preferably, the side wall of the sleeve 116 is installed with a ball bearing 117, and the outer ring of the ball bearing 117 is connected with two symmetrically arranged bases 118, and the base 118 is rotatably connected with a first connecting rod 119, and the number of the first connecting rods 119 is 2, and the base 118 is rotatably connected with a second connecting rod 120, and the number of the second connecting rod 120 is 2, and the second connecting rod 120 is located below the first connecting rod 119, and a first connecting rod 119 and a second connecting rod 120 form a group, and the first connecting rod 119 and the second connecting rod 120 form a group. The free sections of the first connecting rod 119 and the second connecting rod 120 are rotatably connected to an inclined rod 121, and a guide cover 122 is connected to the inclined rod 121. The lower diameter of the guide cover 122 is larger than the upper diameter. The shape of the guide cover 122 is arc-shaped. After the two guide covers 122 are buckled together, an inverted V-shaped air flow channel can be formed to reversely blow the material at the bottom of the first tank body 3. The side wall of the second connecting rod 120 is connected to a protruding rod 123; a guide rail is installed in the middle of the base 118 124. A slider 125 is slidably connected to the guide rail 124. The slider 125 is connected to a drive rod 126. The drive rod 126 has two symmetrically arranged notches 127. The notches 127 slide and fit in with the protruding rod 123. The drive rod 126 is connected to a telescopic rod 128. The telescopic rod 128 is connected to the base 118. The telescopic rod 128 drives the second connecting rod 120 to adjust the angle, thereby controlling the opening and closing of the two deflectors 122. Movement process: When the deflector 122 is opened, the third nozzle 96 in the center of the sleeve 116 sprays air to form a fluidized bed of falling large-particle materials. The telescopic rod 128 drives the slider 125 to slide on the guide rail 124, closing the deflector 122. The notched groove 127 of the drive rod 126 cooperates with the protruding rod 123, driving the second connecting rod 120 and the first connecting rod 119 to rotate, controlling the opening and closing of the deflector 122 and reversely purging the materials at the bottom of the first tank body 3. Beneficial effects: The fluidized bed makes the material evenly distributed and easy to crush; the guide cover 122 can be adjusted to open and close, and blow the bottom material in the reverse direction to prevent material accumulation, thereby improving the crushing efficiency and material processing effect.

[0062] like Figure 30As shown, a production process for cerium oxide using an airflow pulverization device is proposed. This cerium oxide production process uses high-purity cerium carbonate as the raw material and constructs a coherent system of "morphology control - pyrolysis crystallization - refined pulverization." First, the cerium carbonate particles are spheroidized (controlling sphericity ≥ 90%) using an airflow shaping device to optimize particle flowability and lay a solid foundation for subsequent continuous production. The drying process then proceeds to a fluidized bed at 120-150°C for 2-3 hours to thoroughly remove surface adsorbed water and some crystallized water, thereby minimizing the risk of particle cracking caused by water boiling during the high-temperature stage.

[0063] The pyrolysis process uses a rotary kiln for calcination, with process parameters set at 800~900℃ and a rotation speed of 1~2r / min to promote the full decomposition of cerium carbonate into cerium oxide (CeO2) and initial nucleation; the subsequent double-tube kiln secondary crystal solidification process is kept warm at 700~800℃ in a weak oxidizing atmosphere for 4~6 hours. Through temperature-controlled annealing, lattice defects are eliminated and crystal integrity is improved (crystallinity ≥98%), reducing energy consumption barriers for efficient crushing.

[0064] During the refining stage, the material is screened through a 200-mesh vibrating screen and equipped with an electromagnetic iron remover with a magnetic field strength of ≥8000 Gs to simultaneously capture mechanical impurities and ferromagnetic particles (iron content ≤3ppm). The core crushing and grading process relies on an airflow pulverizer. The jet mechanism's counter-flow nozzles create a vortex field, increasing material collision efficiency by 30%. A double-layered serpentine cooling channel maintains a stable temperature of 60-80°C, preventing high-temperature agglomeration of cerium oxide. The grading mechanism's double-layered curved baffles achieve a synergistic "coarse screening + fine crushing" effect, strictly controlling D50 particle size fluctuations to within ±2μm. A shaking mechanism, coupled with a pulse purge system, reduces the agglomeration rate to below 5%, ensuring complete cleaning of the tank.

[0065] Finally, the product is evenly blended in a mixer (30-50 r / min, 15-20 minutes) and sealed under nitrogen protection. The particle size uniformity of the finished product reaches ISO Class 1, precisely matching the stringent application standards in high-end optics and catalysis fields.

[0066] Although the present invention has been described in detail with reference to the foregoing examples, it is still possible for those skilled in the art to make modifications to the technical solutions described in the foregoing embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cerium oxide airflow pulverization device, characterized in that: The invention comprises a base (1), wherein the base (1) is provided with a support leg (2), and the support leg (2) is provided with a first tank body (3), wherein the first tank body (3) is provided with a jet mechanism (4) for ejecting high-pressure airflow and driving materials to collide and crush each other, and the first tank body (3) is provided with a feed pipe (5) located above the jet mechanism (4); the inner wall of the first tank body (3) is provided with a cooling assembly (6) arranged at equal angles, and the cooling assembly (6) includes an arc-shaped cooling plate (7), and the top surface of the cooling plate (7) is provided with two layers of refrigerant flow channels (8), the two layers of refrigerant flow channels (8) are connected through an arc-shaped flow channel (10), and the ports of the two layers of the refrigerant flow channels (8) are connected through a U-shaped pipe (9), and the U-shaped pipe located at the edge is provided with a cooling assembly (6) arranged at equal angles. The tube (9) is connected to a liquid inlet pipe (11) and a liquid outlet pipe (12) extending to the outside of the first tank body (3); the upper end of the first tank body (3) is provided with a second tank body (13), the second tank body (13) is provided with a grading mechanism (14) and a discharge pipe (15) corresponding to the grading mechanism (14), and the upper end of the second tank body (13) is provided with a top cover (16); the side wall of the first tank body (3) is provided with a seventh air supply pipe (46), the end of the seventh air supply pipe (46) is connected to a second nozzle (47), and the seventh air supply pipe (46) is connected to a pulse mechanism (48); the pulse mechanism (48) includes a valve body (49) having a valve cavity (50), and the valve body (49) has two A piston chamber (51) is connected to a valve chamber (50), wherein a piston cylinder (52) is slidably connected in the piston chamber (51), the tail of which is located outside the valve body (49) and connected to a pressure block (53), and a return spring (54) is sleeved on the piston cylinder (52) and located between the pressure block (53) and the valve body (49); a first bearing seat (55) is mounted on the valve body (49), and a first rotating shaft (56) driven by a first motor (57) is rotatably connected to the first bearing seat (55), and two cams (58) protruding in opposite directions are connected to the first rotating shaft (56); the first bearing seat (55) is rotatably connected to two A symmetrically arranged shaft (59), an arc-shaped lever (60) is installed on the shaft (59), and contacts (61) are connected at both ends of the lever (60) and are respectively slidably adapted to the cam (58) and the pressure block (53); a shell (62) is installed on the seventh air supply pipe (46), and the shell (62) has a main air cavity (63) connected to the seventh air supply pipe (46), and a sliding cavity (64) is provided in the middle of the main air cavity (63), and a sealing cap (65) for sealing the main air cavity (63) is slidably connected in the sliding cavity (64), and the sealing cap (65) is connected to a compression spring (66) located in the sliding cavity (64); the shell (62) has two bypass air cavities (67) connected to the main air cavity (63) and with ports located on both sides of the sliding cavity (64).

2. The cerium oxide airflow pulverization device according to claim 1, characterized in that: The jet mechanism (4) comprises a first air delivery pipe (17) located at the installation gap between adjacent cooling assemblies (6), a first nozzle (18) being installed at the internal port of the first air delivery pipe (17), and a second air delivery pipe (19) being installed at the external port of the first air delivery pipe (17); the lower end of the second air delivery pipe (19) is connected to a third air delivery pipe (20), and the lower end of the third air delivery pipe (20) is connected to a semicircular fourth air delivery pipe (21), and the two fourth air delivery pipes (21) are connected to form an annular pipeline through a flange, and one of the fourth air delivery pipes (21) is connected to a fifth air delivery pipe (22).

3. The cerium oxide airflow pulverization device according to claim 1, characterized in that: The side wall of the second tank body (13) is connected to a first branch pipe (27) and a second branch pipe (28), the inner wall of the second branch pipe (28) is provided with a discharge pipe (15), and the end of the discharge pipe (15) has a concave groove; the grading mechanism (14) includes a driving motor (29) connected to the first branch pipe (27), the shaft side of the driving motor (29) is connected to a sealing bearing (30) rotatably connected to the first branch pipe (27), and the shaft end of the driving motor (29) is connected to a (13), the free end of the shaft sleeve (31) is connected to a rotating plate (32), and the end face of the rotating plate (32) is connected to a first baffle (33) arranged at an equal angle; the free end of the first baffle (33) is connected to a circular ring (34), and the flange (35) on the circular ring (34) is adapted to the concave groove; the end face of the rotating plate (32) is also connected to an arc-shaped second baffle (36) arranged at an equal angle, and the gap between adjacent second baffles (36) is smaller than the gap between adjacent first baffles (33).

4. The cerium oxide airflow pulverization device according to claim 1, characterized in that: The side wall of the first tank body (3) is connected to a manhole (37) at the installation gap of the adjacent cooling assembly (6), and the manhole (37) is provided with an end cover (38). The center of the end cover (38) is provided with an inspection port (39), and the end cover (38) is connected to a pressure ring (40) and is hinged with a pressure rod (41). The middle section of the pressure rod (41) is threadedly connected to a screw rod (42), one end of the screw rod (42) is connected to a rocker (43), and the other end is connected to a pressure cover (44) for pressing the pressure ring (40), and the end cover (38) is hinged with a buckle (45) for pressing the free end of the pressure rod (41).

5. The cerium oxide airflow pulverization device according to claim 1, characterized in that: The bottom center of the first tank body (3) is provided with a third branch pipe (68), a cover plate (69) is provided on the third branch pipe (68), and a shaking mechanism (70) is installed on the cover plate (69); the shaking mechanism (70) includes a second rotating shaft (71) rotatably connected to the cover plate (69) and driven by a second motor (72), and an eccentric seat (73) is hinged to the second rotating shaft (71) above the cover plate (69) through a pin shaft, and the eccentric seat ( An eccentric shaft (74) is fixed on the eccentric shaft (73), and a spherical head (75) is connected to the upper end of the eccentric shaft (74); a ball head seat (76) is connected to the spherical head (75), a spherical groove (77) on the top surface of the ball head seat (76) is used to place the spherical head (75), and a conical groove (78) on the bottom surface ensures the deflection angle of the eccentric shaft (74), and a carrier plate (79) for carrying materials is provided on the top surface of the ball head seat (76); at least four first compression springs (80) arranged at equal angles are connected to the bottom surface of the carrier plate (79), and the lower end of the first compression spring (80) is connected to a spring seat (81) fixed to the side wall of the third branch pipe (68).

6. The cerium oxide airflow pulverization device according to claim 5, characterized in that: The side wall of the third branch pipe (68) has a first flange ring (83), and the bottom surface of the carrier plate (79) has a second flange ring (84). A rubber bellows (82) is connected between the first flange ring (83) and the second flange ring (84). The bellows (82) is used to cover the eccentric shaft (74) and the second rotating shaft (71).

7. The cerium oxide airflow pulverization device according to claim 6, characterized in that: The side wall of the carrier plate (79) has a first retaining ring (85), and the first retaining ring (85) is connected to a tapered rubber tube (87) through a first fixing ring (86); the bottom of the first tank body (3) has a second retaining ring (88) with a diameter larger than that of the first retaining ring (85), and the second retaining ring (88) is fixed to the rubber tube (87) through a second fixing ring (89). The rubber tube (87) and the carrier plate (79) form a closed air chamber and cover the first compression spring (80), the eccentric shaft (74) and the second rotating shaft (71).

8. The cerium oxide airflow pulverization device according to claim 7, characterized in that: The top surface of the carrier plate (79) is connected to a cooling plate (90) having a flat spiral cooling channel (91) therein, and two ends of the cooling channel (91) are connected to a liquid inlet (93) and a liquid outlet (94) located on the first tank body (3).

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